Carrier Freezer 50KQL 1PD User Manual
AQUAZONE™  
50KQL07-19  
Water Source Heat Pumps  
Console Unit  
Product  
Data  
1/2 to 11/2 Nominal Tons  
TM  
Single-Package Console Water  
Source Heat Pump with self-  
contained line voltage thermostats.  
• Suitable for either geothermal or  
boiler/tower applications with  
operating temperature range from  
20 F to 110 F.  
• Thermostatic expansion valve  
(TXV) provides efficient and reliable  
refrigerant flow  
• Rubber grommet mounted  
compressors for quiet operation  
• Sloped top cabinet with powder  
paint finish  
• Right or left hand piping connection  
• Multiple unit-mounted and remote  
thermostat options  
• Adaptable cabinet and subbase  
configurations  
• Factory-mounted flow regulators and  
control valves for easy installation  
• Flexible and reliable controls  
accommodate all systems  
Features/Benefits  
Carrier’s Aquazone console  
water source heat pumps are  
a flexible, attractive  
alternative for all finished  
interior space, under-window  
style installations.  
Operating efficiency  
Carrier Aquazone water source heat  
pump (WSHP) units are designed for  
quality and performance excellence  
over their lifetime. Units offer standard  
cooling EERs (Energy Efficiency  
Ratios) up to 12.1 for boiler/tower  
systems and as high as 19.5 for geo-  
thermal applications. Heating COPs  
(Coefficient of Performance) are as  
high as 4.9, among the highest in the  
industry.  
Copyright 2004 Carrier Corporation  
Form 50KQL-1PD  
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Features/Benefits (cont)  
Anti-short cycle timer — Provides a  
Water coil freeze protection  
(selectable for water or anti-  
exclusively by Carrier, the controller  
can be used to actively monitor and  
control all modes of operation as well  
as monitor the following diagnostics  
and features: unit number, zone tem-  
perature, zone set point, zone humidity  
set point, discharge air temperatures,  
fan status, stages of heating, cooling  
stages, outdoor-air temperature,  
leaving-air temperature, leaving water  
temperature, alarm status, and alarm  
lockout condition.  
This controller has 38.4K baud  
communications capability and is com-  
patible with ComfortLink™ Controls,  
CCN and ComfortVIEW™ Software.  
The Scrolling Marquee and Navigator  
are optional tools used for program-  
ming and monitoring the unit for opti-  
mal performance. Adding the Carrier  
CO2 sensor in the conditioned space  
provides ASHRAE 62-99 compliance  
and Demand Control Ventilation  
(DCV). A DCV control strategy is espe-  
cially beneficial for a water source heat  
pump system to minimize the energy  
used to condition ventilation air. In  
combination with energy efficient  
Aquazone units, DCV may be the most  
energy efficient approach ever devel-  
oped for a water source heat pump  
system.  
minimum off time to prevent the unit  
from short cycling. The 5-minute timer freeze) — Field selectable switch for  
energizes when the compressor is  
deenergized, resulting in a 5-minute  
delay before the unit can be restarted.  
water and water/glycol solution sys-  
tems initiates a fault when tempera-  
tures exceed the selected limit for  
30 continuous seconds.  
Random start relay — Ensures a  
random delay in energizing each differ- Air coil freeze protection (check  
ent WSHP unit. This option minimizes  
peak electrical demand during start-up  
filter operation) — Field selectable  
switch for assessing excessive filter  
from different operating modes or after pressure drop initiates a fault when  
building power outages.  
temperatures exceed the selected limit  
for 30 continuous seconds.  
Alarm relay setting — Selectable  
24-v or pilot duty dry contact provides  
remote alarm activation.  
Electric heat option — Output pro-  
vided on the controller for operating  
two stages of emergency electric heat.  
Service test mode with diagnostic  
LED (light-emitting diode) — Test  
mode allows service personnel to  
High and low pressure refrigerant  
protection — Safeguards against  
unreliable unit operation and prevents  
refrigerant from leaking.  
Condensate overflow sensor —  
Electronic sensor mounted to the drain  
pan. When condensate pan liquid  
reaches an unacceptable level, the unit  
is automatically deactivated and placed  
in a lockout condition. The sensor  
recognizes thirty continuous seconds  
of overflow as a fault condition.  
check the operation of the WSHP and  
control system efficiently. Upon enter-  
High and low voltage protection — ing Test mode, time delays speed up,  
Safety protection for excessive or low  
voltage conditions.  
and the Status LED flashes a code  
indicating the last fault. This mode  
provides easy fault diagnosis; based on  
the fault code the status LED flashes,  
Carrier provided troubleshooting tables  
provide easy reference to typical  
problems.  
LED visual output — An LED panel  
indicates high pressure, low pressure,  
low voltage, high voltage, air/water  
freeze protection, condensate over-  
flow, and control status.  
Automatic intelligent reset — Unit  
shall automatically restart 5 minutes  
after shutdown if the fault has cleared.  
Should a fault occur 3 times sequen-  
tially, lockout will occur.  
Accessory output — In applications  
such as variable speed pumping, a  
24-v output cycles a motorized water  
valve or damper actuator with  
compressor.  
Performance Monitor (PM) —  
Unique feature monitors water temper-  
atures to warn when the heat pump  
is operating inefficiently or beyond  
typical operating range. A field select-  
able switch initiates a warning code on  
the unit display.  
The PremierLink peer-to-peer,  
Internet ready communicating control  
is designed specifically for Constant  
Volume and Variable Volume Tempera-  
ture applications. This comprehensive  
controls system allows water source  
heat pumps to be linked together, cre-  
ating a fully functional HVAC (heating,  
ventilation, and air conditioning) auto-  
mation system.  
Carrier PremierLink™ control-  
ler adds reliability, efficiency,  
and simplification  
The PremierLink direct digital control-  
ler can be ordered as a factory-installed  
option. Designed and manufactured  
3
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Model number nomenclature  
5
0
K
Q
L
0
7
S
A
E
C
1
0
1
A
A
Aquazone™ High-Efficiency R-22  
Water Source Heat Pump  
50KQL – Console Unit  
Power Termination  
A – Field-Connected Hard Wired  
B – 20A Plug and Cord**  
D – Disconnect switch, 15A fuse  
F – Disconnect switch, non-fused  
H – 20A Plug, Cord, Receptacle,  
Disconnect Switch, 15A Fuse  
K – 20A Plug, Cord, Disconnect  
Switch, No Fuse  
Size – Nominal Capacity (Tons)  
07 – 1/2  
09 – 3/4  
12 –  
1
15 – 1 1/4  
19 – 1 1/2  
Packaging  
1 – Domestic  
Water Circuit Options  
Valve Option  
2-Way Water Control Valve  
Revision Code  
0 – Current revision  
Connection Type  
A
B
C
D
–
–
–
–
Sweat  
Sweat  
Sweat  
Sweat  
Autoflow Regulator, 2.25 gpm/ton  
Autoflow Regulator, 3.0 gpm/ton  
2-Way Water Control Valve with  
Autoflow Regulator, 2.25 gpm/ton  
2-WayWater Control Valve with  
Autoflow Regulator, 3.0 gpm/ton  
None  
2-Way Water Control Valve  
Autoflow Regulator, 2.25 gpm/ton  
Autoflow Regulator, 3.0 gpm/ton  
2-Way Water Control Valve with  
Autoflow Regulator, 2.25 gpm/ton  
2-Way Water Control Valve with  
Autoflow Regulator, 3.0 gpm/ton  
None  
2-Way Water Control Valve  
Autoflow Regulator, 2.25 gpm/ton  
Autoflow Regulator, 3.0 gpm/ton  
2-WayWater Control Valve with  
Autoflow Regulator, 2.25 gpm/ton  
None  
Power Supply  
1 – 115V-1 Ph-60 Hz††  
3 – 208/230V-1 Ph-60 Hz  
4 – 265V-1 Ph-60 Hz**  
E
–
Sweat  
F
G
H
J
–
–
–
–
–
FPT  
FPT  
FPT  
FPT  
FPT  
Heat Exchanger and Operating Range  
C – Copper heat exchanger, standard range  
(60 to 95 F)  
E – Copper heat exchanger, extended range (20 to 110 F)  
F – Cupronickel heat exchanger, extended range  
(20 to 110 F)  
K
L
–
FPT  
N – Cupronickel heat exchanger, standard range  
(60 to 95 F)  
M
N
P
Q
R
–
–
–
–
–
MPT  
MPT  
MPT  
MPT  
MPT  
Cabinet, Subbase and Mute Package Options  
Std Mute  
Cabinet  
Subbase  
S
T
–
–
Sweat  
MPT  
A
B
T
Bottom return  
Bottom return  
3 in. Subbase  
2-Way Water Control Valve with  
Autoflow Regulator, 3.0 gpm/ton  
U
3 in. Subbase with  
Motorized Damper  
C
V
5 in. Subbase with  
Motorized Damper  
Bottom return  
Bottom return  
Water Supply Orientation  
R – Right Hand  
D
E
W
Y
NO BASE  
*
Bottom return  
3 in. Subbase  
L – Left Hand  
Locking control door  
F
G
H
Z
1
2
Bottom return  
Locking control door  
3 in. Subbase with  
Motorized Damper  
Bottom return  
Locking control door  
5 in. Subbase with  
Motorized Damper  
Control Options  
A – Manual Changeover with Complete C  
B – Manual Changeover with Deluxe D  
C – Auto Changeover with Complete C  
D – Auto Changeover with Deluxe D  
P – PremierLink™ DDC Control†  
Bottom return  
Locking control door  
NO BASE  
J
3
4
Front return  
NO BASE  
NO BASE  
K
Front return  
Locking control door  
R – Remote Thermostat with Complete C  
S – Remote Thermostat with Deluxe D  
L
5
6
NO CABINET  
NO CABINET  
3 in. Subbase  
M
3 in. Subbase with  
Motorized Damper  
*Right and left hand orientation is determined by looking at front of unit.  
N
7
NO CABINET  
5 in. Subbase with  
Motorized Damper  
†Available with Complete C only.  
**20A plug and cord not available for 265V units.  
††Sizes 07,09,12 only.  
P
Q
R
S
8
9
NO CABINET  
NO CABINET  
Bottom return  
NO BASE  
5 in. Subbase  
5 in. Subbase  
5 in. Subbase  
0
O
Bottom return  
Locking control door  
4
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ARI/ISO 13256-1 capacity ratings  
COOLING  
HEATING  
Input Power  
(kW)  
WATER  
FLOW  
(gpm)  
PRESSURE  
DROP  
AIRFLOW  
(cfm)  
UNIT 50KQL  
Input Power  
TC  
SC  
THR  
EER  
TC  
COP  
(ft wg)  
(kW)  
0.645  
0.775  
1.060  
1.169  
1.333  
07  
09  
12  
15  
19  
7.8  
9.3  
12.3  
13.8 11.2  
16.0 11.9  
6.6  
7.2  
9.5  
10.0  
11.9  
15.9  
17.8  
20.6  
12.1  
12.0  
11.6  
11.8  
12.0  
10.4  
12.0  
15.0  
17.3  
19.3  
0.622  
0.799  
0.999  
1.152  
1.346  
4.9  
4.4  
4.4  
4.4  
4.2  
240  
300  
350  
400  
460  
1.9  
2.5  
3.1  
3.6  
4.8  
1.5  
3.1  
3.8  
3.0  
5.0  
LEGEND  
NOTES:  
1. Ratings are in accordance with and certified to ARI/ISO Standard  
13256-1.  
ARI  
COP  
db  
—
—
—
—
—
—
—
—
—
Air Conditioning and Refrigeration Institute  
Coefficient of Performance  
Dry Bulb Temperature  
Energy Efficiency Ratio  
International Organization for Standardization  
Total Capacity (MBtuh)  
2. Cooling Standard: 80.6 F db, 66 F wb indoor entering air tempera-  
ture, 86 F entering water temperature.  
3. Heating Standard: 68 F db indoor entering air temperature, and  
68 F entering water temperature.  
EER  
ISO  
TC  
THR  
SC  
wb  
Total Heat of Rejection (MBtuh)  
Sensible Capacity (MBtuh)  
Wet Bulb Temperature  
Physical data  
BASE UNIT 50KQL  
NOMINAL COOLING CAPACITY (Btuh)  
COMPRESSOR  
07  
7,800  
09  
9,300  
12  
12,300  
Rotary  
15  
13,800  
19  
16,000  
BLOWER  
1
1
1
1
1
/
/
15  
/
15  
/
/
Motor Horsepower  
Wheel Size D x W (in.) 2 each  
20  
51/4 x 61/4  
8 x 291/2 x 3/8  
7 x 291/2 x 1/8  
51/4 x 61/4  
8 x 291/2 x 3/8  
7 x 291/2 x 1/8  
51/4 x 61/4  
8 x 291/2 x 3/8  
7 x 291/2 x 1/8  
51/4 x661/4  
51/4 x661/4  
8 x 291/2 x 3/8  
7 x 291/2 x 1/8  
8 x 291/2 x 3/8  
7 x 291/2 x 1/8  
FILTER SIZE (in.) Bottom Return  
FILTER SIZE (in.) Front Return  
UNIT WEIGHT (lb)  
Shipping  
Operating  
181  
173  
185  
177  
195  
187  
201  
193  
206  
198  
REF. TO AIR HEAT EXCHANGER  
Face Area (sq ft)  
1.4  
1.4  
1.4  
1.8  
1.8  
No. of Rows Deep  
2
2
3
3
3
3
3
3
3
3
Copper Tube Size OD (in.)  
Fin Spacing (FPI)  
/
/
/
8
/
8
/
8
8
8
13  
13  
13  
13  
12  
REFRIG. CHARGE (R-22)/CKT (oz)  
No. of Circuits  
16  
1
16  
1
21  
1
27  
1
24  
1
UNIT CABINET WITH STANDARD SUBBASE  
W x H x D (in.)  
48 x 24 x 12  
48 x 24 x 12  
48 x 24 x 12  
48 x 24 x 12  
48 x 24 x 12  
5
5
5
5
5
/
/
/
8
/
8
/
WATER IN/OUT SIZE OD SWEAT (in.)  
CONDENSATE SIZE ID VINYL (in.)  
8
8
8
5
5
5
5
5
/
/
/
8
/
8
/
8
8
8
5
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Options and accessories  
with 2-hour override is initiated by a momentary signal  
from the thermostat.  
Compressor relay staging — Used with dual stage units  
(units with 2 compressors and 2 Deluxe D controls) or in  
master/slave applications.  
Factory-installed options  
Cupronickel heat exchangers are available for higher  
corrosion protection for applications such as open tower,  
geothermal, etc. Consult the water quality guidelines for  
proper application and selection of this option.  
Boilerless electric heat control system — Allows automatic  
changeover to electric heat at low loop water temperature.  
Intelligent reversing valve operation — Minimizes reversing  
valve operation for extended life and quiet operation.  
Thermostat type select (Y, O or Y, W) — Provides ability to  
work and select heat pump or heat/cool thermostats (Y, W).  
Reversing valve signal select (O or B) — Provides selection  
for heat pump O/B thermostats.  
Dehumidistat input — Provides operation of fan control for  
dehumidification operation.  
Multiple units on one thermostat/wall sensor — Provides  
for communication for up to three heat pumps on one  
thermostat.  
Boilerless changeover temperature — Provides selection of  
boilerless changeover temperature set point.  
Accessory relays — Allow configuration for multiple appli-  
cations including fan and compressor cycling, digital night  
setback (NSB), mechanical night setback, water valve oper-  
ation, and outside air damper operation.  
Night low limit — If the unit operation is turned OFF from  
either the push button switches, remote thermostat or the  
energy management system, it is possible that the space  
temperature could drop uncontrollably. The Night Low  
Limit feature, with Deluxe D controller, helps maintain the  
space temperature at a level that is the best compromise  
between energy consumption and a safe space tempera-  
ture. A thermostat located near the return air filter  
activates the blower and compressor operation when the  
space temperature falls below 50 F. When return air tem-  
perature is raised above 55 F the compressor and blower  
stop.  
Override function — An Override function is available for  
units operating in occupied/unoccupied mode under the  
control of an external timeclock or an energy management  
system. A contact closure from the timeclock or energy  
management system shorts the NSB and C terminal on the  
Deluxe D controller signaling an unoccupied mode.  
For units with the unit-mounted thermostat, pressing  
override switch (located under control access door) will  
override the unoccupied mode and allow the occupied  
mode of operation to continue for a period of two hours.  
The units with the remote wall-mounted thermostat  
require a digital thermostat with the override function. In  
unoccupied mode an accessory relay is energized on the  
Deluxe D controller. The NO/NC contacts of the relay can  
be used as appropriate input to the digital thermostat to  
signal occupied/unoccupied mode. The thermostat selects  
cooling/heating set points based on occupied/unoccupied  
mode.  
Thermostat options include a unit mounted Manual  
Changeover (MCO) or Auto Changeover (ACO) thermo-  
stat. The temperature set point knob and push button  
switches for fan speed and cool/heat mode (MCO) selec-  
tion are conveniently located on the top. The thermostat  
senses the return-air temperature. The thermostat sends  
the appropriate signal to the controller for cooling or heat-  
ing mode of operation.  
Options R and S allow connection to a remote wall-  
mounted thermostat. The Complete C controller requires a  
heat pump thermostat. The Deluxe D controller can be  
configured for heat pump or heat/cool thermostat.  
Extended range is provided to insulate the coaxial coil to  
prevent condensation, and therefore potential dripping  
problems, in applications where the entering water  
temperature is below the normal operating range (less than  
60 F).  
Cabinet options include a locking control panel for  
added security. Bottom or front return with left or right  
hand configurations are available for ease of installation.  
Available with 3 or 5 in. subbase, with or without motor-  
ized damper.  
Motorized fresh air damper with the unit-mounted  
thermostat. Opens when LOW or HIGH fan speed selec-  
tions are made from the push button switches. When  
STOP or FAN ONLY selections are made the spring return  
on the damper motor closes the damper. With remote  
thermostat the motorized fresh air damper opens when the  
fan is running.  
Piping connections can be provided on either the right  
or left hand side of the unit, for easy installation. Orienta-  
tion is determined by facing the unit from the front side.  
Automatic flow regulators include internally mounted  
2.25 or 3.0 gpm/ton automatic flow regulating valves for  
easier installation.  
Two-way motorized control valve can be provided with  
a copper or cupronickel heat exchanger for applications  
involving open type systems or variable speed pumping.  
This valve will slowly open and close in conjunction with the  
compressor operation to shut off or turn on water to the  
unit. Standard two-way valve performance includes Cv of  
2.9 and maximum operating pressure differential (MOPD)  
of 125 psi.  
Mute package includes high density noise suppression  
material on front, right, and left sides of compressor  
compartment and 1/2-in. fiberglass insulation on all  
insulated surfaces, for extra-quiet operation in the most  
critical applications.  
Deluxe D control system provides the same functions  
as the Complete C while incorporating additional flexibility  
and functions to include:  
Thermostat input capabilities — Accommodate emergency  
shutdown mode and night setback with override (NSB)  
potential. Night setback from low temperature thermostat  
PremierLink™ controller is compatible with the Carrier  
Comfort Network (CCN) and other building automation  
systems (BAS). This control is designed to allow users the  
access and ability to change factory-defined settings thus  
expanding the function of the standard unit.  
6
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50KQL CONTROL OPTIONS TABLE  
OPTION  
CONTROLLER  
Complete C  
THERMOSTAT  
MCO  
FUNCTIONS  
TRANSFORMER  
50 VA  
A
B
C
D
P
R
—
Deluxe D  
MCO  
NIGHT LOW LIMIT 2-HR OVERRIDE  
75 VA  
Complete C  
ACO  
—
50 VA  
Deluxe D  
ACO  
NIGHT LOW LIMIT 2-HR OVERRIDE  
75 VA  
Complete C with PremierLink™  
Complete C  
LINKAGE  
REMOTE  
DDC SYSTEM  
—
50 VA  
50 VA  
NIGHT LOW LIMIT2-HR  
OVERRIDE  
S
Deluxe D  
REMOTE  
75 VA  
LEGEND  
ACO  
DDC  
MCO  
—
—
—
Auto Changeover  
Direct Digital Controls  
Manual Changeover  
• Panel can be ordered with unique WSHP zone operation  
capabilities for stand alone systems (i.e., non-communicating)  
to control 10 or 18 zones of WSHP units.  
• Panel can be ordered to control variable frequency cool-  
ing tower fan operation.  
• System pumping operation can be configured for start/  
stop, lead/lag, or variable frequency pump operation.  
• Direct Digital Control compatible using the Carrier  
Comfort Network (CCN) and WSHP units utilizing  
PremierLink CCN controllers.  
Fire-rated hoses are 2 ft long and have a fixed MPT on  
one end and a swivel with an adapter on the other end.  
Hose kits are provided with both a supply and return hose  
and can be either stainless steel or galvanized. Five sizes  
are available (1/2, 3/4, 1, 11/4, 11/2 in.).  
Ball valves (brass body) used for shutoff and balancing  
water flow. Available with memory, memory stop, and  
pressure temperature ports. UL-listed brass body, ball and  
stem type with Teflon seats and seals. Five sizes are avail-  
able (1/2, 3/4, 1, 11/4, 11/2 in.).  
Y strainers (bronze body) are “Y” type strainers with a  
brass cap. Maximum operating pressure rating of  
450 psi. Strainer screen made of stainless steel. Available  
with blow down valves. Five sizes are available (1/2, 3/4, 1,  
11/4, 11/2 in.).  
Solenoid valves (brass body) offer 3.5 watt coil,  
24 volt, 50/60 Hz, 740 amps inrush, .312 amps holding.  
Slow operation for quiet system application. Five sizes are  
available (1/2, 3/4, 1, 11/4, 11/2 in.).  
Hose kit assemblies provide all the necessary compo-  
nents to hook up a water-side system. Supply hose  
includes a ported ball valve with pressure temperature  
(P/T) plug ports, flexible stainless steel hose with swivel  
and nipple. Return hose includes a ball valve, preset auto-  
matic balancing valve (gpm) with two P/T ports, flexible  
stainless steel hose with a swivel and nipple, balancing  
valve, and low-pressure drop water control valve.  
Field-installed accessories  
Carrier’s line of Aquazone™ thermostats (used with  
remote thermostat units) are both attractive and multi-  
functional, accommodating stand-alone water source heat  
pump installations.  
Programmable 7-day thermostat — Offers 2-stage heat,  
2-stage cool, auto changeover, 7-day programmable with  
copy command, 4 settings per day, fully electronic, 24 vac,  
backlit LCD, keypad lockout, no batteries required,  
5-minute compressor protection, NEVERLOST™ memory,  
3 security levels, temperature display in degrees F or C.  
Programmable 7-day light-activated thermostat — Offers  
same features as the 7-day programmable thermostat and  
includes occupied comfort settings with lights on, unoccu-  
pied energy savings with lights off.  
Programmable 7-day flush-mount thermostat — Offers  
same features as the 7-day programmable thermostat and  
includes locking coverplate with tamper proof screws, flush  
to wall mount, holiday/vacation programming, set point  
limiting, dual point with adjustable deadband, O or B termi-  
nal, and optional wall or duct-mounted remote sensor.  
Programmable 5-day thermostat — Offers 2-stage heat,  
2-stage cool, auto changeover, 5-minute built-in compres-  
sor protection, locking cover included, temperature display  
in degrees F or C, keypad lockout, backlit display, 5-1-1  
programming, O or B terminal, dual set point with adjust-  
able deadband, configurable display, self-prompting pro-  
gram, 4 settings per day.  
Non-programmable thermostat — Offers 2 heat stages,  
2 cool stages, auto changeover, 5-minute built in compressor  
protection, locking cover included, temperature display in  
degrees F or C, keypad lockout, large display, back-lit dis-  
play, O or B terminal, dual set point with adjustable dead-  
band, backplate with terminals.  
Aquazone system control panel includes a pre-  
programmed, easy to use, Carrier Comfort Controller set  
up for a WSHP system.  
• Coordinates, monitors, and controls all WSHP units  
and ancillary equipment including cooling towers, boil-  
ers, and system pumps.  
Remote sensors are available for Aquazone flush mount  
thermostats. Sensors are available for wall (wired and wire-  
less) or duct mounted applications.  
PremierLink™ accessories are available to provide a  
fully integrated WSHP DDC system. Accessories include  
supply air temperature sensors (with override and/or set-  
point adjustment), communicating room sensors, CO2 sen-  
sors (for use in demand control ventilation), and linkage  
thermostats (to control multiple units from one thermostat).  
• 50RLP model nomenclature is used to customize the  
panel to control all WSHP system requirements.  
• Panel can be ordered to include 2, 4, 6, or 8 stages of  
system heat rejection.  
• Panel can be ordered to include 2, 4, 6, or 8 stages of  
system heat addition.  
7
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Options and accessories (cont)  
CARRIER AQUAZONE™ THERMOSTATS  
(FOR USE WITH REMOTE THERMOSTAT UNITS)  
Carrier  
®
Pm  
COOL  
HEAT  
AUTO  
7-DAY PROGRAMMABLE/LIGHT-ACTIVATED  
PROGRAMMABLE  
7-DAY PROGRAMMABLE FLUSH MOUNT  
R
COOL  
AUTO  
HEAT  
5-DAY PROGRAMMABLE/NON-PROGRAMMABLE  
PREMIERLINK™ COMMUNICATING CONTROL  
8
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Dimensions  
50KQL BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING  
3.5  
(88.9)  
Discharge  
Air  
16  
(406)  
5
(127)  
30°  
Control Access Door  
FRONT VIEW  
Filter located inside and at  
top of air inlet area. Push  
tabs back and down to release  
filter for replacement.  
SIDE  
VIEW  
*23.9  
(607)  
1.9  
(48)  
Air  
Inlet  
AIR INLET AREA  
11.5  
1.75  
(44.5)  
33.5  
(292)  
(851)  
*2.9  
(74)  
48.0  
(1219)  
12.0  
(305)  
48.0  
(1219)  
R.H. Pipe &  
Electric Area  
10.0  
(254)  
BOTTOM VIEW  
0.75  
(19)  
1.56  
(40)  
3.5  
(89)  
1 (25)  
4.5  
(114)  
1 (25)  
REAR VIEW  
REAR  
ACCESS  
21  
(533)  
20  
(508)  
1.63  
(41)  
*2.9  
(74)  
0.59  
(15)  
DAMPER OPENING*  
11.75  
(298)  
9.81  
(249)  
48  
(1219)  
*Dimension shown is with 3 in. subbase. Add 2 in. to dimension shown for 5 in. subbase.  
NOTES:  
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
9
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Dimensions (cont)  
50KQL BOTTOM RETURN CABINET DIMENSIONS — LEFT HAND PIPING  
3.5  
(88.9)  
12.6  
(320)  
Discharge  
Air  
1.5  
(38)  
30°  
Control Access Door  
Filter located inside and at top of air  
inlet area. Push tabs back and down  
to release filter for replacement.  
SIDE  
VIEW  
FRONT VIEW  
*23.9  
(607)  
1.9  
(48)  
Air  
Inlet  
AIR INLET AREA  
33.5  
11.5  
1.75  
(44.5)  
(851)  
(292)  
*2.9  
(74)  
48.0  
(1219)  
12.0  
(305)  
48.0  
(1219)  
L.H. Pipe &  
Electric Area  
10.0  
(254)  
BOTTOM VIEW  
0.75  
(19)  
1.56  
(40)  
1 (25)  
1 (25)  
3.5  
(89)  
4.5  
(114)  
REAR  
ACCESS  
21.0  
(533)  
REAR VIEW  
20.0  
(508)  
1.63  
(41)  
0.59  
(15)  
*2.9  
(74)  
DAMPER OPENING*  
11.75  
(298)  
9.9  
(251)  
48.0  
(1219)  
*Dimension shown is with 3 in. subbase. Add 2 in. to dimension shown for 5 in. subbase.  
NOTES:  
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
10  
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50KQL FRONT RETURN CABINET DIMENSIONS — RIGHT HAND PIPING  
3.5  
(88.9)  
Discharge  
Air  
16  
(406)  
5
(127)  
30°  
Control Access Door  
FRONT VIEW  
SIDE  
VIEW  
21.0  
(533)  
21.0  
(533)  
Air  
Inlet  
7.9  
(201)  
43.7  
(1110)  
12.0  
(305)  
48.0  
(1219)  
Filter located behind return  
air grille and requires removal of  
cabinet front for access.  
48.0  
(1219)  
R.H. Pipe &  
Electric Area  
12.0  
(305)  
BOTTOM VIEW  
4.5  
(114)  
1 (25)  
1 (25)  
REAR VIEW  
21.0  
(533)  
20.0  
(508)  
REAR  
ACCESS  
48.0  
(1219)  
NOTES:  
1. All dimensions are shown in inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
11  
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Dimensions (cont)  
50KQL FRONT RETURN CABINET DIMENSIONS — LEFT HAND PIPING  
3.5  
(88.9)  
Discharge  
Air  
12.6  
(320)  
1.5  
(38.1)  
30°  
Control Access Door  
FRONT VIEW  
SIDE  
VIEW  
21.0  
(533)  
21.0  
(533)  
Air  
Inlet  
7.9  
(201)  
43.7  
(1110)  
12.0  
(305)  
48.0  
(1219)  
Filter located behind return  
air grille and requires removal of  
cabinet front for access.  
48.0  
(1219)  
L.H. Pipe &  
Electric Area  
BOTTOM VIEW  
12.0  
(305)  
1 (25)  
4.5  
(114)  
1 ( 25)  
REAR  
ACCESS  
21.0  
(533)  
REAR VIEW  
20.0  
(508)  
48.0  
(1219)  
NOTES:  
1. All dimensions are shown in inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
12  
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50KQL CHASSIS DIMENSIONS — SIZE 07, 09, 12, 15, 19  
5.36  
3.28  
(83)  
40.98  
(1040)  
(136)  
Power Supply  
3.01  
(76)  
1.84  
(47)  
30°  
Water Out  
Water In  
0.87  
(22)  
Control Box  
Blower Deck  
*16.66  
(423)  
20.50  
(521)  
Compressor  
Access  
Panel  
7.5  
(191)  
*1.94  
(49)  
Blower Access Panel  
*7.06  
3.56  
(90)  
(179)  
4.46  
(113)  
0.75  
(19)  
0.75  
(19)  
3.88  
(99)  
3.43 0.99  
(87) (25)  
Condensate  
5/8” (15.9 mm)  
ID Vinyl Hose  
11.5  
4
(293)  
Optional  
Autoflow  
Valve  
Optional  
Motorized  
Water Valve  
Water Connections  
5/8” (15.9 mm)  
OD Copper,  
1/2” FPT or  
1/2” MPT  
Optional Disconnect Box  
(mounted to cabinet not chassis)  
RIGHT HAND CONFIGURATION  
5.36  
40.98  
(1041)  
3.50  
(89)  
(136)  
Power Supply  
3.01  
(76)  
1.93  
(49)  
Water Out  
Water In  
30°  
0.87  
(22)  
Control Box  
3.42  
(87)  
Blower Deck  
*16.66  
(423)  
20.44  
(52)  
Compressor  
Access  
7.5  
(191)  
Panel  
*1.94  
(49)  
Blower Access Panel  
3.56  
(90)  
*7.06  
(179)  
4.49  
(114)  
0.75  
(19)  
3.22  
(82)  
0.75  
(19)  
Condensate  
5/8” (15.9 mm)  
ID Vinyl Hose  
3.88  
(99)  
11.5  
4
Optional  
Autoflow  
Valve  
Optional  
Motorized  
Water Valve  
*For installed dimension, add to dimension shown 2.9 in. with 3 in. subbase and 4.9 in. for 5 in.  
subbase.  
Water Connections  
5/8” (15.9 mm)  
OD Copper,  
1/2” FPT or  
1/2” MPT  
NOTES:  
1. Dime
n
s
io  
n
s
s
h
o
w
n
a
r
e
i
n
inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
3. Water connection in same location regardless of connection type.  
Optional Disconnect Box  
(mounted to cabinet not chassis)  
LEFT HAND CONFIGURATION  
13  
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Selection procedure (with 50KQL12 example)  
I Determine the actual cooling and heating  
loads at the desired dry bulb and wet bulb  
conditions.  
IV Determine the correction factors associated  
with the variable factors of dry bulb and wet  
bulb using the Corrections Factor tables  
found in this book.  
Assume cooling load at desired dry bulb 80 F and  
wet bulb 66 F conditions are as follows:  
Given:  
Using the following formulas to determine the cor-  
rection factors of dry bulb and wet bulb:  
a) Corrected Total Cooling = tabulated total cooling  
x wet bulb correction x airflow correction.  
b) Corrected Sensible Cooling = tabulated sensible  
cooling x wet/dry bulb correction x airflow  
correction  
Total Cooling (TC). . . . . . . . . . . . . . .11,750 Btuh  
Sensible Cooling (SC) . . . . . . . . . . . . .8,650 Btuh  
Entering-Air Temperature db . . . . . . . . . . . . 80 F  
Entering-Air Temperature wb . . . . . . . . . . . . .66 F  
II Determine the following design parameters.  
V Determine entering air and airflow correction  
using the Corrections Factor tables found in  
this book.  
Determine entering water temperature, water flow  
rate (gpm), airflow (cfm), water flow pressure drop  
and design wet and dry bulb temperatures. Airflow  
cfm should be between 300 and 450 cfm per ton.  
For applications using multiple units, the water pres-  
sure drop should be kept as close as possible across  
units to make water balancing easier. Enter the  
50KQL12 Performance Data tables and find the  
proper indicated water flow and water temperature.  
The nominal airflow for 50KQL12 is 350 cfm. The  
design parameter is 325 cfm.  
308/350 = 88% of nominal airflow  
Use the 88% row in the Nominal Cfm Correction  
table.  
The Entering Air Temperature wb is 66 F. Use the  
66.2 F row in the Entering Air Correction table.  
For example:  
Using the following formulas to determine the cor-  
rection factors of entering air and airflow correction:  
Entering Water Temp . . . . . . . . . . . . . . . . . 90 F  
Water Flow (Based upon  
10 F rise in temp) . . . . . . . . . . . . . . . . . . 3.1 gpm  
Table  
Ent Air Airflow Corrected  
Airflow Cfm . . . . . . . . . . . . . . . . . . . . . . 308 cfm  
Corrected  
Total Cooling  
= 12,200 x 0.983 x 0.979 = 11,741  
III Select a unit based on total cooling and total  
sensible cooling conditions. Unit selected  
should be closest to but not larger than the  
actual cooling load.  
Corrected  
Sensible Cooling = 89,900 x 1.036 x 0.936 = 8,630  
Corrected  
Heat of Rejection = 15,900 x 0.985 x 0.979 = 15,333  
Enter tables at the design water flow and water  
temperature. Read the total and sensible cooling  
capacities.  
NOTE: Interpolation is permissible, extrapolation is  
not.  
Compare the corrected capacities to the load  
requirements established in Step I. If the capacities  
are within 10% of the load requirements, the equip-  
ment is acceptable. It is better to undersize than  
oversize as undersizing improves humidity control,  
reduces sound levels and extends the life of the  
equipment.  
For example:  
Enter the 50KQL12 Performance Table at design  
water flow and water temperature. Read Total  
Cooling, Sensible Cooling and Heat of Rejection  
capacities:  
Total Cooling . . . . . . . . . . . . . . . . . .12,200 Btuh  
Sensible Cooling . . . . . . . . . . . . . . . . 8,900 Btuh  
Heat of Rejection . . . . . . . . . . . . . . .15,900 Btuh  
VI Water temperature rise calculation and  
assessment.  
Calculate the water temperature rise and assess the  
selection using the following calculation:  
Correction of Heat Rejection  
gpm x 500  
Actual Temperature  
Rise  
=
NOTE: It is quite normal for water source heat  
pumps to be selected on cooling capacity only since  
the heating output is usually greater than the cooling  
capacity. Heating capacity is selected based on  
different entering water conditions than cooling  
capacity.  
For example, using the Corrected Heat of Rejection  
from the last step:  
15,333  
3.1 x 500  
Actual Temperature  
Rise  
=
=
9.9 F  
If the units selected are not within 10% of the load  
calculations, review what effect changing the gpm,  
water temperature and/or airflow will have on the  
corrected capacities. If the desired capacity cannot  
be achieved, select the next larger or smaller unit  
and repeat Steps I through VI.  
14  
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VII ARI/ISO 13256-1 Conversion  
c) Perform Fan Power Correction Adjustment  
Performance standard ARI/ISO 13256-1 became  
effective on January 1, 2000 and replaced the exist-  
ing ARI Standards 320 Water-Loop Heat Pumps  
(WLHP), 325 Ground-Water Heat Pumps (GWHP),  
and 330 Ground-Loop Heat Pumps (GLHP).  
Use the following formula to calculate Fan Power  
Correction:  
Fan Power  
Correction = (Cfm x 0.472) x (External Static  
Pressure x 249)/300 = Watts  
The ARI/ISO Standard incorporates a consistent  
rating methodology for including fan and pump  
energy for calculating cooling capacity, heating  
capacity, and energy efficiency ratios (EER). This  
simplifies the use of rating data for heat pump per-  
formance modeling in seasonal energy analysis cal-  
culations, and allows for direct rating comparisons  
across applications.  
= (308 x 0.472) x (0 x 249)/300  
= 0 Watts  
d) Perform Pump Power Correction Adjustment  
Use the following formula to calculate Pump  
Power Correction:  
Pump Power  
Correction = (GPM x 0.0631) x (Pressure Drop  
x 2,990)/300  
= Watts  
a) ISO Capacity and Efficiency Equations  
The following equations are used to calculate and  
correct cooling capacity, heating capacity, and  
respective EER:  
ISO Cooling Capacity = (Cooling Capacity in  
Btuh) + (Fan Power Correction in Watts x 3.412)  
= (3.1 x 0.0631) x  
(3.7 x 2,990)/300  
= 7.2 Watts  
e) Perform capacity and EER calculations  
ISO Cooling EER = (ISO Cooling Capacity in  
Btuh/3.412)/(Power Input in watts – fan power  
correction in watts + pump power correction in  
watts) = Watts/Watts  
NOTE: Do not divide ISO Cooling Capacity by  
3.412 to obtain Btuh/Watts.  
Use the following formula to calculate capacity  
and EER:  
ISO Cooling  
Capacity  
= (Cooling Capacity) + (Fan Power  
Correction x 3.412)  
= 11,741 + (0 x 3.412)  
= 11,741 Btuh  
f) Perform Corrections by using the ISO Equations  
ISO Heating Capacity = (Heating Capacity in  
Btuh) – (Fan Power Correction in Watts x 3.412)  
ISO Heating EER = (ISO Heating Capacity in  
Btuh/3.412)/(Power Input in watts – fan power  
correction in watts + pump power correction in  
watts) = Watts/Watts  
ISO EER = (ISO Cooling Capacity/3.412)/  
(Power Input – Fan Power Correc-  
tion + Pump Power Correction)  
= Watts/Watts  
NOTE: Do not divide ISO Heating Capacity by  
3.412 to obtain Btuh/Watts.  
NOTE: Do not divide ISO Cooling Capacity by  
3.412 to obtain Btuh/Watts.  
b) Identify the design conditions corrected for air and  
water conditions.  
= (11,741/3.412)/(1,067 – 0 + 7.2)  
= 3.20 Watts/Watt  
= 10.93 Btuh/Watt  
Airflow Cfm = 308 Cfm  
Water Flow  
(Based upon 10 F rise in temp) = 3.1 GPM  
External Static Pressure = 0.0 in. wg (non-ducted  
application)  
Water Pressure Drop = 3.7 ft of head  
Power input = 1,067 watts  
Cooling Capacity = 11,741 Btuh  
15  
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Performance data  
50KQL07 — NOMINAL AIRFLOW 240 CFM  
WATER PRESSURE DROP (ft wg)  
COOLING — EAT 80 F DB/67 F WB  
HEATING — EAT 70 F  
EWT  
(F)  
GPM  
Without Motorized  
Valve  
With Cv = 2.9  
MOPD = 125 psi  
Input  
Input  
Power  
TC  
SC  
SHR  
THR  
TC  
THA  
Power  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.0  
1.4  
1.9  
1.6  
2.5  
3.7  
1.4  
2.2  
3.3  
0.9  
1.4  
2.1  
0.9  
1.4  
2.0  
0.8  
1.3  
1.9  
0.7  
1.2  
1.8  
0.7  
1.1  
1.6  
0.6  
1.0  
1.5  
0.6  
1.0  
1.4  
0.6  
0.9  
1.3  
0.5  
0.9  
1.3  
1.8  
2.7  
4.2  
1.6  
2.4  
3.7  
1.0  
1.7  
2.5  
1.0  
1.6  
2.5  
0.9  
1.5  
2.4  
0.9  
1.4  
2.2  
0.8  
1.3  
2.0  
0.7  
1.3  
1.9  
0.7  
1.2  
1.9  
0.7  
1.1  
1.7  
0.7  
1.1  
1.7  
Operation not recommended  
20  
Operation not recommended  
5.5  
6.0  
6.3  
6.4  
6.9  
7.2  
7.4  
7.8  
8.2  
8.4  
8.7  
9.2  
9.4  
0.50  
0.51  
0.52  
0.52  
0.53  
0.54  
0.55  
0.56  
0.57  
0.57  
0.58  
0.59  
0.60  
0.61  
0.62  
0.63  
0.63  
0.64  
0.65  
0.64  
0.65  
0.66  
0.65  
0.66  
0.67  
3.8  
4.3  
4.5  
4.7  
5.1  
5.4  
5.6  
5.9  
6.3  
6.5  
6.7  
7.2  
7.4  
7.6  
8.1  
8.3  
8.4  
9.0  
9.3  
8.9  
9.4  
9.7  
9.3  
9.9  
10.2  
9.7  
9.8  
9.9  
9.4  
9.6  
9.7  
9.0  
9.3  
9.5  
8.6  
8.9  
9.1  
8.1  
8.5  
8.6  
7.6  
8.0  
8.1  
7.4  
7.7  
7.9  
7.2  
7.5  
7.6  
6.7  
7.0  
7.2  
6.4  
6.6  
6.7  
6.9  
6.9  
6.9  
6.8  
6.9  
6.9  
6.7  
6.8  
6.8  
6.5  
6.6  
6.7  
6.3  
6.5  
6.5  
6.1  
6.2  
6.3  
5.9  
6.1  
6.2  
5.8  
6.0  
6.1  
5.5  
5.7  
5.8  
5.2  
5.4  
5.5  
0.71  
0.70  
0.70  
0.72  
0.71  
0.71  
0.74  
0.73  
0.72  
0.76  
0.74  
0.74  
0.78  
0.76  
0.76  
0.79  
0.78  
0.78  
0.80  
0.79  
0.78  
0.81  
0.80  
0.79  
0.81  
0.81  
0.81  
0.81  
0.81  
0.81  
0.36  
0.33  
0.31  
0.41  
0.37  
0.36  
0.46  
0.42  
0.40  
0.52  
0.48  
0.46  
0.58  
0.53  
0.51  
0.65  
0.60  
0.57  
0.68  
0.63  
0.61  
0.72  
0.67  
0.64  
0.81  
0.75  
0.72  
0.91  
0.84  
0.81  
10.9  
10.9  
10.9  
10.8  
10.9  
10.9  
10.6  
10.8  
10.8  
10.4  
10.5  
10.6  
10.1  
10.3  
10.4  
9.8  
10.0  
10.1  
9.7  
9.9  
10.0  
9.6  
9.8  
9.8  
9.5  
9.6  
30  
40  
50  
60  
9.6  
70*  
80  
10.2  
10.5  
10.6  
11.1  
11.5  
11.0  
11.6  
12.0  
11.5  
12.1  
12.5  
85*  
90  
100  
110  
9.6  
9.5  
9.5  
9.5  
Operation Not Recommended  
LEGEND  
— Dry Bulb  
NOTES:  
1. MOPD = Maximum Operating Pressure Differential (water pres-  
sure differential at unit cannot exceed MOPD or water valve can-  
not close)  
DB  
EAT  
— Entering Air Temperature (F)  
EWT — Entering Water Temperature (F)  
GPM — Gallons per Minute  
2. Interpolation is permissible, extrapolation is not.  
3. All entering air conditions are 80 F db and 67 F wb in cooling and  
70 F db in heating.  
4. All performance data is based upon the lower voltage of dual volt-  
age rated units. See Performance Correction Tables on page 21  
for operating conditions other than those listed above.  
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F  
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and  
59 F wb in heating.  
MBtuh — Btuh in Thousands  
SC  
— Sensible Capacity (MBtuh)  
SHR — Sensible Heat Ratio  
TC  
— Total Capacity  
THA — Total Heat of Absorption (MBtuh)  
THR — Total Heat of Rejection (MBtuh)  
WB  
— Wet Bulb  
WLHP — Water Loop Heat Pump  
*ARI 320 points (bold printing) are shown for comparison purposes  
only. These are not certified data points.  
16  
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50KQL09 — NOMINAL AIRFLOW 300 CFM  
WATER PRESSURE DROP (ft wg)  
COOLING — EAT 80 F DB/67 F WB  
HEATING — EAT 70 F  
EWT  
(F)  
GPM  
Without Motorized  
Valve  
With Cv = 2.9  
MOPD = 125 psi  
Input  
Input  
Power  
TC  
SC  
SHR  
THR  
TC  
THA  
Power  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
1.3  
1.9  
2.5  
2.2  
3.9  
6.2  
1.8  
3.2  
5.0  
1.3  
2.6  
4.0  
1.3  
2.5  
3.9  
1.2  
2.4  
3.7  
1.2  
2.2  
3.5  
1.1  
2.1  
3.2  
1.1  
2.0  
3.1  
1.0  
2.0  
3.0  
1.0  
1.9  
3.0  
1.0  
2.0  
3.1  
2.4  
4.4  
7.0  
2.0  
3.6  
5.8  
1.5  
3.0  
4.7  
1.5  
2.9  
4.6  
1.4  
2.8  
4.4  
1.3  
2.7  
4.2  
1.3  
2.5  
4.0  
1.2  
2.4  
3.9  
1.2  
2.4  
3.8  
1.2  
2.3  
3.7  
1.2  
2.4  
3.8  
Operation not recommended  
20  
30  
Operation not recommended  
7.2  
7.5  
7.6  
7.7  
8.1  
8.4  
8.6  
9.1  
9.4  
0.63  
0.66  
0.67  
0.67  
0.69  
0.70  
0.71  
0.72  
0.73  
0.74  
0.75  
0.77  
0.77  
0.79  
0.80  
0.81  
0.82  
0.83  
0.84  
0.83  
0.85  
0.86  
0.85  
0.87  
0.88  
5.1  
5.2  
5.4  
5.4  
5.8  
6.0  
6.2  
6.6  
6.9  
7.1  
7.6  
8.0  
8.2  
8.6  
9.1  
9.4  
9.7  
10.3  
10.6  
10.2  
10.8  
11.2  
10.8  
11.4  
11.7  
11.3  
11.7  
11.9  
10.9  
11.2  
11.3  
10.6  
10.8  
10.9  
10.2  
10.4  
10.6  
9.8  
10.1  
10.2  
9.3  
9.6  
9.8  
9.0  
9.4  
9.6  
8.7  
7.6  
7.7  
7.8  
7.4  
7.5  
7.6  
7.2  
7.3  
7.4  
7.1  
7.2  
7.2  
6.9  
7.0  
7.1  
6.8  
6.9  
6.9  
6.7  
6.8  
6.9  
6.5  
6.7  
6.8  
6.2  
6.4  
6.5  
5.7  
6.0  
6.2  
0.67  
0.66  
0.66  
0.68  
0.67  
0.67  
0.68  
0.68  
0.67  
0.69  
0.69  
0.68  
0.71  
0.70  
0.69  
0.73  
0.71  
0.71  
0.74  
0.72  
0.72  
0.75  
0.74  
0.73  
0.79  
0.77  
0.76  
0.83  
0.80  
0.79  
0.48  
0.44  
0.42  
0.54  
0.49  
0.47  
0.60  
0.56  
0.53  
0.67  
0.62  
0.60  
0.75  
0.70  
0.67  
0.83  
0.78  
0.75  
0.87  
0.82  
0.79  
0.92  
0.86  
0.83  
1.01  
0.95  
0.92  
1.10  
1.04  
1.02  
13.0  
13.2  
13.3  
12.8  
12.9  
13.0  
12.6  
12.7  
12.8  
12.5  
12.6  
12.6  
12.4  
12.5  
12.5  
12.1  
12.3  
12.4  
12.0  
12.2  
12.3  
11.8  
12.0  
12.1  
11.3  
11.6  
11.8  
10.7  
11.1  
11.3  
40  
50  
9.7  
10.1  
10.6  
10.9  
11.3  
11.9  
12.2  
12.5  
13.1  
13.5  
13.1  
13.7  
14.1  
13.7  
14.3  
14.7  
60  
70  
80  
85  
90  
9.1  
9.3  
7.9  
8.4  
8.6  
6.9  
7.5  
7.8  
100  
110  
Operation Not Recommended  
LEGEND  
— Dry Bulb  
NOTES:  
1. MOPD = Maximum Operating Pressure Differential (water pres-  
sure differential at unit cannot exceed MOPD or water valve can-  
not close)  
DB  
EAT  
— Entering Air Temperature (F)  
EWT — Entering Water Temperature (F)  
GPM — Gallons per Minute  
2. Interpolation is permissible, extrapolation is not.  
3. All entering air conditions are 80 F db and 67 F wb in cooling and  
70 F db in heating.  
4. All performance data is based upon the lower voltage of dual volt-  
age rated units. See Performance Correction Tables on page 21  
for operating conditions other than those listed above.  
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F  
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and  
59 F wb in heating.  
MBtuh — Btuh in Thousands  
SC  
— Sensible Capacity (MBtuh)  
SHR — Sensible Heat Ratio  
TC  
— Total Capacity  
THA — Total Heat of Absorption (MBtuh)  
THR — Total Heat of Rejection (MBtuh)  
WB  
— Wet Bulb  
WLHP — Water Loop Heat Pump  
*ARI 320 points (bold printing) are shown for comparison purposes  
only. These are not certified data points.  
17  
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Performance data (cont)  
50KQL12 — NOMINAL AIRFLOW 350 CFM  
WATER PRESSURE DROP (ft wg)  
Without Motorized  
COOLING — EAT 80 F DB/67 F WB  
HEATING — EAT 70 F  
EWT  
(F)  
GPM  
With Cv = 2.9  
MOPD = 125 psi  
6.5  
Input  
Power  
Input  
Power  
TC  
SC  
SHR  
THR  
TC  
THA  
Valve  
2.1  
3.8  
6.1  
1.8  
3.3  
5.3  
1.6  
3.1  
4.8  
1.6  
2.9  
4.5  
1.5  
2.7  
4.3  
1.4  
2.6  
4.1  
1.3  
2.5  
3.9  
1.3  
2.4  
3.8  
1.3  
2.3  
3.7  
1.2  
2.2  
3.4  
1.1  
2.0  
3.2  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
1.6  
2.3  
3.1  
Operation not recommended  
20  
30  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
Operation not recommended  
8.7  
9.4  
9.7  
0.78  
0.81  
0.83  
0.83  
0.86  
0.87  
0.88  
0.89  
0.91  
0.92  
0.93  
0.94  
0.95  
0.96  
0.97  
0.98  
0.98  
0.99  
1.00  
0.99  
1.00  
1.01  
1.00  
1.01  
1.01  
6.0  
6.6  
6.9  
7.1  
7.7  
8.0  
8.3  
8.8  
9.2  
14.8  
14.9  
15.0  
14.4  
14.7  
14.8  
14.0  
14.3  
14.5  
13.5  
13.8  
14.0  
12.9  
13.3  
13.5  
12.2  
12.7  
12.9  
11.8  
12.3  
12.6  
11.5  
12.0  
12.2  
10.7  
11.2  
11.5  
9.9  
9.8  
9.9  
9.9  
9.6  
9.7  
9.8  
9.5  
9.6  
9.6  
9.3  
9.4  
9.5  
9.1  
9.2  
9.3  
8.9  
9.0  
9.1  
8.8  
8.9  
9.0  
8.6  
8.8  
8.9  
8.4  
8.6  
8.6  
8.1  
8.3  
8.4  
0.66  
0.66  
0.66  
0.67  
0.66  
0.66  
0.68  
0.67  
0.67  
0.69  
0.68  
0.68  
0.71  
0.69  
0.69  
0.73  
0.71  
0.71  
0.74  
0.72  
0.72  
0.75  
0.73  
0.73  
0.78  
0.76  
0.75  
0.82  
0.79  
0.78  
0.60  
0.55  
0.53  
0.68  
0.62  
0.59  
0.76  
0.70  
0.67  
0.86  
0.79  
0.76  
0.97  
0.90  
0.86  
1.10  
1.01  
0.97  
1.16  
1.07  
1.03  
1.23  
1.14  
1.09  
1.37  
1.27  
1.23  
1.52  
1.42  
1.37  
16.8  
16.8  
16.8  
16.7  
16.8  
16.8  
16.6  
16.7  
16.7  
16.4  
16.5  
16.6  
16.2  
16.3  
16.4  
15.9  
16.1  
16.2  
15.8  
16.0  
16.1  
15.7  
15.8  
15.9  
15.4  
15.6  
15.7  
15.1  
15.3  
15.4  
9.9  
10.6  
11.0  
11.2  
11.8  
12.3  
12.6  
13.1  
13.6  
13.9  
14.3  
14.9  
15.2  
15.5  
16.0  
16.3  
16.0  
16.6  
16.9  
16.5  
17.1  
17.3  
40  
50  
9.5  
9.9  
60  
10.4  
10.7  
11.0  
11.6  
11.9  
12.1  
12.7  
12.9  
12.6  
13.2  
13.4  
13.1  
13.6  
13.9  
70  
80  
85  
90  
11.4  
19.6  
6.5  
11.4  
19.6  
6.5  
100  
110  
Operation Not Recommended  
11.4  
19.6  
10.4  
10.7  
LEGEND  
— Dry Bulb  
NOTES:  
1. MOPD = Maximum Operating Pressure Differential (water pres-  
sure differential at unit cannot exceed MOPD or water valve can-  
not close)  
DB  
EAT  
— Entering Air Temperature (F)  
EWT — Entering Water Temperature (F)  
GPM — Gallons per Minute  
2. Interpolation is permissible, extrapolation is not.  
3. All entering air conditions are 80 F db and 67 F wb in cooling and  
70 F db in heating.  
4. All performance data is based upon the lower voltage of dual volt-  
age rated units. See Performance Correction Tables on page 21  
for operating conditions other than those listed above.  
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F  
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and  
59 F wb in heating.  
MBtuh — Btuh in Thousands  
SC  
— Sensible Capacity (MBtuh)  
SHR — Sensible Heat Ratio  
TC  
— Total Capacity  
THA — Total Heat of Absorption (MBtuh)  
THR — Total Heat of Rejection (MBtuh)  
WB  
— Wet Bulb  
WLHP — Water Loop Heat Pump  
*ARI 320 points (bold printing) are shown for comparison purposes  
only. These are not certified data points.  
18  
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50KQL15 — NOMINAL AIRFLOW 400 CFM  
WATER PRESSURE DROP (ft wg)  
COOLING — EAT 80 F DB/67 F WB  
HEATING — EAT 70 F  
EWT  
(F)  
GPM  
Without Motorized  
Valve  
With Cv = 2.9  
MOPD = 125 psi  
Input  
Input  
Power  
TC  
SC  
SHR  
THR  
TC  
THA  
Power  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.8  
2.7  
3.6  
1.4  
3.0  
4.9  
1.2  
2.6  
4.2  
1.3  
2.3  
3.6  
1.2  
2.2  
3.5  
1.2  
2.1  
3.4  
1.1  
2.0  
3.2  
1.1  
2.0  
3.1  
1.1  
1.9  
3.0  
1.0  
1.9  
3.0  
1.0  
1.8  
2.9  
1.0  
1.8  
2.9  
1.8  
3.9  
6.5  
1.6  
3.4  
5.7  
1.6  
3.1  
5.1  
1.6  
3.1  
5.0  
1.6  
3.0  
4.9  
1.5  
2.9  
4.8  
1.5  
2.8  
4.6  
1.5  
2.8  
4.6  
1.4  
2.7  
4.5  
1.4  
2.7  
4.4  
1.4  
2.7  
4.4  
Operation not recommended  
20  
30  
Operation not recommended  
9.9  
10.4  
10.7  
10.9  
11.6  
12.1  
12.3  
13.1  
13.7  
14.0  
14.7  
15.4  
15.8  
16.4  
17.2  
17.6  
18.0  
18.8  
19.3  
18.8  
19.6  
20.0  
19.5  
20.2  
20.6  
0.93  
0.95  
0.96  
0.97  
0.99  
1.00  
1.01  
1.03  
1.05  
1.05  
1.07  
1.09  
1.09  
1.10  
1.12  
1.13  
1.13  
1.15  
1.15  
1.14  
1.15  
1.16  
1.15  
1.16  
1.16  
6.7  
7.2  
7.4  
7.6  
8.2  
8.7  
8.9  
9.6  
10.1  
10.4  
11.1  
11.7  
12.1  
12.6  
13.4  
13.8  
14.1  
14.9  
15.3  
14.8  
15.6  
16.0  
15.5  
16.3  
16.6  
16.5 11.2  
16.6 11.1  
16.6 11.0  
16.3 11.1  
16.5 11.2  
16.5 11.2  
15.8 11.0  
16.2 11.1  
16.3 11.1  
15.2 10.8  
15.6 10.9  
15.8 11.0  
14.3 10.5  
14.9 10.7  
15.2 10.8  
13.4 10.2  
14.0 10.4  
14.3 10.5  
12.9 10.0  
13.5 10.3  
13.9 10.4  
0.67  
0.67  
0.67  
0.68  
0.68  
0.67  
0.70  
0.69  
0.68  
0.71  
0.70  
0.69  
0.73  
0.72  
0.71  
0.76  
0.74  
0.73  
0.78  
0.76  
0.75  
0.80  
0.78  
0.76  
0.85  
0.82  
0.80  
0.91  
0.87  
0.85  
0.68  
0.62  
0.60  
0.76  
0.70  
0.67  
0.85  
0.78  
0.75  
0.94  
0.87  
0.84  
1.04  
0.97  
0.94  
1.16  
1.08  
1.05  
1.21  
1.14  
1.10  
1.27  
1.20  
1.16  
1.40  
1.32  
1.28  
1.53  
1.45  
1.41  
18.8  
18.7  
18.6  
18.9  
18.9  
18.8  
18.7  
18.8  
18.9  
18.4  
18.6  
18.7  
17.9  
18.2  
18.4  
17.3  
17.7  
17.9  
17.0  
17.4  
17.6  
16.7  
17.1  
17.3  
15.9  
16.4  
16.6  
15.0  
15.5  
15.8  
40  
50  
60  
70  
80  
85  
12.3  
9.9  
13.0 10.1  
13.4 10.2  
90  
11.1  
11.9  
12.2  
9.8  
10.6  
11.0  
9.4  
9.7  
9.8  
8.9  
9.2  
9.4  
100  
110  
Operation Not Recommended  
LEGEND  
— Dry Bulb  
NOTES:  
1. MOPD = Maximum Operating Pressure Differential (water pres-  
sure differential at unit cannot exceed MOPD or water valve can-  
not close)  
DB  
EAT  
— Entering Air Temperature (F)  
EWT — Entering Water Temperature (F)  
GPM — Gallons per Minute  
2. Interpolation is permissible, extrapolation is not.  
3. All entering air conditions are 80 F db and 67 F wb in cooling and  
70 F db in heating.  
4. All performance data is based upon the lower voltage of dual volt-  
age rated units. See Performance Correction Tables on page 21  
for operating conditions other than those listed above.  
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F  
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and  
59 F wb in heating.  
MBtuh — Btuh in Thousands  
SC  
— Sensible Capacity (MBtuh)  
SHR — Sensible Heat Ratio  
TC  
— Total Capacity  
THA — Total Heat of Absorption (MBtuh)  
THR — Total Heat of Rejection (MBtuh)  
WB  
— Wet Bulb  
WLHP — Water Loop Heat Pump  
*ARI 320 points (bold printing) are shown for comparison purposes  
only. These are not certified data points.  
19  
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Performance data (cont)  
50KQL19 — NOMINAL AIRFLOW 460 CFM  
WATER PRESSURE DROP (ft wg)  
COOLING — EAT 80 F DB/67 F WB  
HEATING — EAT 70 F  
EWT  
(F)  
GPM  
Without Motorized  
With Cv = 2.9  
MOPD = 125 psi  
Input  
Input  
Power  
TC  
SC  
SHR  
THR  
TC  
THA  
Power  
Valve  
3.0  
6.0  
9.7  
2.1  
4.2  
6.8  
2.0  
3.8  
6.2  
2.0  
3.7  
6.0  
1.9  
3.5  
5.8  
1.8  
3.3  
5.5  
1.7  
3.2  
5.2  
1.6  
3.1  
5.0  
1.6  
3.0  
4.9  
1.6  
2.9  
4.8  
1.6  
3.0  
4.9  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
2.4  
3.6  
4.8  
3.7  
7.5  
12.5  
2.8  
5.8  
9.6  
2.7  
5.4  
9.0  
2.6  
5.2  
8.8  
2.5  
5.1  
8.5  
2.4  
4.9  
8.2  
2.4  
4.7  
7.9  
2.3  
4.6  
7.8  
2.3  
4.6  
7.7  
2.2  
4.5  
7.5  
2.3  
4.5  
7.6  
Operation not recommended  
11.2 7.6  
20  
30  
Operation not recommended  
1.05  
1.09  
1.10  
1.11  
1.14  
1.16  
1.17  
1.21  
1.23  
1.24  
1.27  
1.30  
1.31  
1.34  
1.36  
1.37  
1.40  
1.42  
1.43  
1.42  
1.44  
1.46  
1.45  
1.47  
1.48  
20.1 13.2  
20.5 13.4  
20.7 13.5  
19.4 12.9  
19.8 13.1  
20.0 13.2  
18.7 12.5  
19.2 12.7  
19.4 12.8  
18.0 12.1  
18.5 12.4  
18.7 12.5  
17.2 11.8  
17.7 12.0  
17.9 12.1  
16.3 11.4  
16.8 11.6  
17.1 11.7  
15.8 11.2  
16.4 11.4  
16.7 11.5  
15.3 11.0  
15.9 11.2  
16.2 11.3  
14.1 10.5  
14.8 10.8  
15.1 10.9  
12.8 10.0  
13.6 10.3  
13.9 10.5  
0.66  
0.66  
0.65  
0.66  
0.66  
0.66  
0.67  
0.66  
0.66  
0.67  
0.67  
0.67  
0.68  
0.68  
0.67  
0.70  
0.69  
0.69  
0.71  
0.70  
0.69  
0.72  
0.71  
0.70  
0.75  
0.73  
0.72  
0.78  
0.76  
0.75  
0.81  
0.76  
0.74  
0.90  
0.84  
0.82  
1.00  
0.94  
0.91  
1.11  
1.04  
1.01  
1.23  
1.16  
1.12  
1.36  
1.28  
1.24  
1.43  
1.35  
1.31  
1.50  
1.42  
1.38  
1.65  
1.56  
1.52  
1.81  
1.72  
1.68  
22.8  
23.1  
23.2  
22.5  
22.7  
22.8  
22.1  
22.4  
22.5  
21.8  
22.0  
22.1  
21.4  
21.6  
21.8  
20.9  
21.2  
21.3  
20.7  
21.0  
21.1  
20.4  
20.7  
20.9  
19.8  
20.1  
20.3  
19.0  
19.4  
19.6  
12.2  
12.6  
12.8  
13.8  
14.3  
14.5  
15.5  
16.0  
16.3  
17.2  
17.8  
18.1  
18.8  
19.4  
19.8  
20.3  
20.9  
21.3  
21.0  
21.6  
21.9  
21.7  
22.2  
22.5  
8.5  
8.9  
9.0  
9.9  
40  
10.3  
10.6  
11.4  
11.9  
12.1  
12.8  
13.4  
13.6  
14.2  
14.8  
15.1  
15.6  
16.1  
16.4  
16.2  
16.7  
16.9  
16.7  
17.2  
17.4  
50  
60  
70  
80  
85  
90  
100  
110  
Operation Not Recommended  
LEGEND  
— Dry Bulb  
NOTES:  
1. MOPD = Maximum Operating Pressure Differential (water pres-  
sure differential at unit cannot exceed MOPD or water valve can-  
not close)  
DB  
EAT  
— Entering Air Temperature (F)  
EWT — Entering Water Temperature (F)  
GPM — Gallons per Minute  
2. Interpolation is permissible, extrapolation is not.  
3. All entering air conditions are 80 F db and 67 F wb in cooling and  
70 F db in heating.  
4. All performance data is based upon the lower voltage of dual volt-  
age rated units. See Performance Correction Tables on page 21  
for operating conditions other than those listed above.  
5. ARI//ISO 13256-1 (WLHP application) certified conditions are 86 F  
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and  
59 F wb in heating.  
MBtuh — Btuh in Thousands  
SC  
— Sensible Capacity (MBtuh)  
SHR — Sensible Heat Ratio  
TC  
— Total Capacity  
THA — Total Heat of Absorption (MBtuh)  
THR — Total Heat of Rejection (MBtuh)  
WB  
— Wet Bulb  
WLHP — Water Loop Heat Pump  
*ARI 320 points (bold printing) are shown for comparison purposes  
only. These are not certified data points.  
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CORRECTION FACTORS — ENTERING AIR  
HEATING  
COOLING  
EAT  
DB  
(F)  
EAT  
WB  
(F)  
Sensible Capacity Entering Dry Bulb (F)  
Input  
Power  
Power  
Input  
TC  
THA  
TC  
THR  
70  
75  
80  
80.6  
85  
90  
95  
60  
65  
68  
70  
75  
80  
1.011  
1.004  
1.002  
1.000  
0.996  
0.991  
0.989  
0.994  
0.997  
1.000  
1.007  
1.018  
1.007  
1.004  
1.002  
1.000  
0.995  
0.990  
60  
65  
66.2  
67  
70  
75  
0.893  
0.964  
0.983  
1.000  
1.049  
1.118  
0.889  
0.692  
0.645  
0.613  
—
1.087  
0.884  
0.838  
0.806  
0.683  
—
*
*
*
*
*
*
*
*
*
*
*
*
0.964  
0.988  
0.995  
1.000  
1.016  
1.037  
0.902  
0.967  
0.985  
1.000  
1.046  
1.106  
1.085  
1.036  
1.000  
0.879  
0.676  
1.108  
1.059  
1.027  
0.902  
0.698  
1.231  
1.199  
1.077  
0.866  
1.274  
1.068  
1.415  
1.266  
—
*Sensible Capacity equals total capacity.  
CORRECTION FACTORS — AIRFLOW  
COOLING CORRECTIONS  
HEATING CORRECTIONS  
Input  
% OF  
NOMINAL  
AIRFLOW  
Input  
TC  
SC  
THR  
TC  
THA  
Power  
Power  
75%  
81%  
0.951  
0.964  
0.979  
0.990  
1.000  
1.010  
1.019  
0.860  
0.894  
0.936  
0.969  
1.000  
1.033  
1.069  
0.963  
0.973  
0.984  
0.992  
1.000  
1.008  
1.016  
0.952  
0.965  
0.979  
0.990  
1.000  
1.010  
1.019  
0.990  
0.993  
0.996  
0.998  
1.000  
1.002  
1.003  
1.054  
1.035  
1.019  
1.008  
1.000  
0.994  
0.988  
0.966  
0.977  
0.987  
0.994  
1.000  
1.005  
1.011  
88%  
94%  
100%  
106%  
113%  
LEGEND  
DB — Dry Bulb  
EAT — Entering Air Temperature (F)  
SC — Sensible Capacity  
TC — Total Capacity  
THA — Total Heat of Absorption  
THR — Total Heat of Rejection  
50KQL CONSOLE BLOWER PERFORMANCE 60 Hz  
RATED  
AIRFLOW  
(cfm)  
AIRFLOW (cfm)  
50KQL  
Low Speed  
High Speed  
07  
09  
12  
15  
19  
240  
300  
350  
400  
460  
190  
240  
300  
340  
400  
240  
300  
350  
400  
460  
NOTES:  
1. Fan speed is field adjustable.  
2. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 208 v for 208-230 v  
units.  
3. All units are ARI/ISO 13256-1 rated on high fan speed.  
4. All units are designed and rated for zero external static pressure (non-ducted) application.  
21  
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Application data  
Aquazone™ water source heat pump products are available  
in a flexible, efficient array of models, which can be used in  
all types of water loop, ground water, and ground loop  
type systems. Use Aquazone products to provide optimal  
energy efficient solutions and adapt to the most challeng-  
ing design requirements.  
• Control configurations such as stand alone, DDC, DCV,  
and VVT®.  
• WSHP efficiency/operational cost comparison chart.  
• System variations such as a system without a boiler,  
variable pumping, and VAV for interior use.  
Ground water systems  
AQUAZONE PRODUCT GUIDE  
To use Aquazone units in ground water applications, you  
should specify extended range. This will provide factory-  
installed coaxial coil insulation to prevent condensate from  
dripping when entering water temperatures are below  
60 F. In addition, the copper coaxial coil installed on the  
Aquazone units may not be suitable for all water condi-  
tions. Refer to the Water Conditioning section for proper  
coaxial coil material selection.  
TYPE  
SIZE (tons)  
50 SERIES  
APPLICATION  
Standard  
Efficiency  
1/2-5  
Efficient, compact, low cost  
alternative for retrofit or new  
boiler/tower systems.  
50RHC,RVC  
Horizontal/Vertical  
High  
Efficiency  
1/2-5  
Efficient, adaptable unit for  
new boiler/tower, ground  
water, or ground loop systems.  
50RHR,RVR  
Horizontal/Vertical  
Premium  
Efficiency  
11/4-6  
Premium, ultra efficient unit for  
new boiler/tower, ground  
Surface water system — This system is typically located  
near a lake or pond. In this application, the loop can be  
submerged in a series of coils beneath the water surface.  
The number of coils required depends on system load and  
design. This application requires minimum piping and  
excavation.  
Open loop system — Use this system where ground  
water is plentiful. In this application, ground water is  
pumped through supply piping from the well to the build-  
ing. The water is then pumped back into the ground  
through a discharge well as it leaves the building. An addi-  
tional heat exchanger is usually installed between the build-  
ing water piping system and the ground water piping sys-  
tem. This design limits piping and excavation.  
50RHS,RVS  
Horizontal/Vertical  
water, or ground loop systems  
Designed to handle large  
zoned areas for all  
applications.  
Attractive design for finished  
interior, under-window  
installations.  
Economical solution for IAQ  
problems and tempering  
ventilation air.  
Used to pre-heat or cool  
air and can be used as a  
stand-alone or supplemental  
boiler/chiller in most hydronic  
heating applications. Also  
conditions process fluids,  
lubricants and refrigerants.  
50HQ,VQ  
Horizontal/Vertical  
Large Capacity  
61/2-25  
Console  
1/2-11/2  
50KQ  
Rooftop  
3-20  
50RTG  
Water-to-  
Water  
3-30  
50RWS  
Aquazone units include a standard TXV and are rated to  
extremely low temperatures to self-adjust the refrigeration  
circuit. Therefore, open loop systems do not require water  
regulating valves. Use a slow opening/closing solenoid  
valve to conserve water.  
Water loop system  
Water loop (or boiler/tower) system applications typically  
include a number of units plumbed to a common piping  
system. For optimal performance, design this system be-  
tween 2.25 and 3 gpm per ton of cooling capacity. The  
system is comprised of highly efficient packaged reverse  
cycle heat pump units interconnected by a water loop. The  
water circuit serves as both a sink and source for heat ab-  
sorption and rejection and is designed for entering water  
temperatures between 60 F and 90 F. Within this temper-  
ature range, units can heat or cool from the same water  
source. Transferring heat from warm to cold spaces in the  
building, whenever they coexist, conserves energy rather  
than creating new heat.  
Ground loop systems  
There are many commonly specified designs for ground  
loop applications. Typical designs include vertical loops  
and horizontal loops. In some applications, water is piped  
from the ground or lake directly to the water source heat  
pump. This system only requires piping to get the water  
from the source to the unit.  
NOTE: When utilizing Aquazone water source heat pumps  
in ground loop systems, refer to the design considerations  
in the ground water system section.  
Refer to the Carrier Water Source Heat Pump Sys-  
tem Design Guide for assistance designing water loop  
systems. The guide includes a practical approach for the  
latest and most current design recommendations including:  
• Horizontal, vertical, console, rooftop and water-to-  
water product applications.  
• Ventilation methods and system design including energy  
recovery.  
• Acoustical considerations for different product types.  
• Addressing IAQ issues such as condensate removal,  
humidity control.  
Horizontal ground loop — Use this system when ade-  
quate space is available and trenching can be easily accom-  
plished. A series of parallel pipes are laid out in trenches 3  
to 6 feet below the ground surface, and then back-filled.  
Often, multiple pipes are used to maximize each trench’s  
heat transfer capability. Ground conditions, heating and  
cooling requirements, and system design determine piping  
requirements and ground loop field size.  
Vertical ground loop — Use this system in vertical bore-  
hole applications. This design is well suited for retrofit  
applications when space is limited or where landscaping is  
already complete and minimum site disruption is desired.  
The vertical ground loop system contains a single loop of  
pipe inserted into a hole. The hole is back-filled and  
grouted after the pipe is inserted. The completed loop is  
• Air distribution design including diffuser selection/  
layout and ductwork design.  
• Hydronic system design including pipe sizing/layout  
and boiler/tower sizing.  
22  
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WATER QUALITY GUIDELINES  
concealed below ground. The number of loops required de-  
pends on ground conditions, heating and cooling require-  
ments, and the depth of each hole.  
Hybrid systems — In some applications, it may be bene-  
ficial to incorporate a cooling tower into the ground loop  
system to reduce the overall cost. A Hybrid System dis-  
cards excess heat into the air and increases the cooling  
performance of the ground loop.  
CONDITION  
ACCEPTABLE LEVEL  
7 to 9 range for copper. Cupronickel may be  
used in the 5 to 9 range.  
pH  
Calcium and magnesium carbonate should not  
exceed 20 grains per gallon (350 ppm).  
Total Hardness  
Iron Oxides  
Iron Bacteria  
Less than 1 ppm.  
No level allowable.  
Max Allowable  
Level  
Coaxial  
Metal  
Ammonia,  
Condensate drainage  
0.5 ppm  
Cu  
Ammonium Hydroxide  
Corrosion*  
Ammonium Chloride,  
Ammonium Nitrate  
Ammonium Sulfate  
Chlorine/Chlorides  
Hydrogen Sulfide†  
Connect the console unit condensate drain to the building  
condensate drain with a flexible, non-pressure rate plastic  
hose. Be sure to avoid kinks in this hose to ensure an un-  
obstructed flow of condensate from the unit to the drain.  
The condensate hose’s horizontal run is usually too short  
to pose any drainage problems, however, make sure this  
line is pitched at least 1 inch for every 10 feet of run (in the  
direction of the flow.) Avoid low points and unpitched  
piping since dirt collects in these areas and may cause stop-  
page and overflow.  
Installing a trap or drain in the field is not required unless  
specified by local codes. The 50KQL units are designated  
in a blow-thru configuration. The condensate drain pan is  
located on the outlet side of the blower so that the pressure  
in the drain pan is higher than the atmospheric pressure.  
0.5 ppm  
Cu  
0.5 ppm  
0.5 ppm  
None Allowable  
Cu  
CuNi  
—
Use Cupronickel heat exchanger when  
concentrations of calcium or sodium chloride  
are greater than 125 ppm are present.  
(Seawater is approximately 25,000 ppm.)  
Brackish  
*If the concentration of these corrosives exceeds the maximum allowable level,  
then the potential for serious corrosion problems exists.  
†Sulfides in the water quickly oxidize when exposed to air, requiring that no agita-  
tion occur as the sample is taken. Unless tested immediately at the site, the  
sample will require stabilization with a few drops of one Molar zinc acetate solu-  
tion, allowing accurate sulfide determination up to 24 hours after sampling. A low  
pH and high alkalinity cause system problems, even when both values are within  
ranges shown. The term pH refers to the acidity, basicity, or neutrality of the  
water supply. Below 7.0, the water is considered to be acidic. Above 7.0, water is  
considered to be basic. Neutral water contains a pH of 7.0.  
NOTE: To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is  
equivalent to ppm.  
Acoustical design  
Water conditioning  
Sound power levels represent the sound that the source, the  
WSHP unit, produces with no regard to attenuation be-  
tween the source and the space. Acoustical design goals are  
necessary to provide criteria for occupied spaces. These  
goals help ensure that people can be comfortable and com-  
municate effectively over the background noise of the air-  
conditioning system and other background noise sources.  
Acoustical design goals are desirable sound pressure levels  
within a given conditioned space and are represented by Noise  
Criteria (NC) curves. Noise Criteria (NC) curve levels represent  
a peak over a full frequency spectrum. A high value in a low  
frequency band has the same effect on NC level as a lower val-  
ue in a high frequency band. It is important that sound levels  
be balanced over the entire spectrum relative to the NC curve.  
The lower the NC criteria curve, the more stringent the room  
acoustical design must be to meet the design goals.  
In some applications, maintaining proper water quality  
may require higher corrosion protection for the water-to-  
refrigerant heat exchanger. Water quality varies from loca-  
tion to location and is unique for each job. Water charac-  
teristics such as pH value, alkalinity, hardness, and specific  
conductance are important when considering any WSHP  
application. Water typically includes impurities and hard-  
ness that must be removed. The required treatment de-  
pends on the water quality as well as system type. Water  
problems fall into three main categories:  
1. Scale formation caused by hard water reduces the  
heat transfer rate and increases the water pressure  
drop through the heat exchanger. As water is heated,  
minerals and salts are precipitated from a solution  
and deposited on the inside surface of the pipe or  
tube.  
2. Corrosion is caused by absorption of gases from the  
air coupled with water on exposed metal. Corrosion  
is also common in salt-water areas.  
3. Organic growths, such as algae, can reduce the heat  
transfer rate by forming an insulating coating on the  
inside tube surface. Algae can also promote corrosion  
by pitting.  
It is important to know how to convert the unit ratings  
from sound power (Lw) to sound pressure (Lp). This con-  
version depends on the specifics of the installation’s acous-  
tical environment. Assessing an area’s acoustical design re-  
quires that you compare the sound pressure (Lp) with the  
NC curve for the selected area.  
The resulting calculations are compared to the NC curve  
selected for the area to assess the acoustical design.  
NOTE: In most commercial water loop applications, Aqua-  
zone™ WSHP units use copper water-to-refrigerant heat  
exchanger. Units can also be equipped with a Cupronickel  
heat exchanger for applications where water is outside the  
copper heat exchanger’s standard contaminant limits.  
Some of the factors that affect conversion of sound  
power to sound pressure and consequent NC level include:  
• Type of acoustical ceiling  
• Use of metal or flex duct  
• Absorption in the occupied space  
• Location in the occupied space  
• Open or closed layout plan  
• Use of open or ducted returns  
• Orientation of unit to occupant  
• Use of lined or unlined duct  
23  
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Application data (cont)  
OCTAVE BAND SOUND PRESSURE LEVEL (Lp)  
AIR LIMITS  
ASSOCIATED WITH NC CURVES  
50KQL  
OCTAVE BAND SOUND PRESSURE LEVEL (Lp)  
NOISE  
Cooling  
50 F  
80 F  
100 F  
50 F  
Heating  
50 F  
66 F  
86 F  
50 F  
CRITERIA  
CURVES  
Frequency (Hz)  
Min. Ambient Air  
Rated Ambient Air  
Max. Ambient Air  
Min. Entering Air  
Rated Entering Air, db/wb  
Max. Entering Air, db/wb  
63  
49  
52  
54  
58  
61  
64  
67  
71  
74  
77  
80  
125  
36  
41  
45  
49  
53  
57  
61  
64  
68  
71  
75  
250  
26  
33  
38  
41  
45  
50  
54  
58  
63  
67  
71  
500  
1000  
17  
22  
27  
31  
36  
41  
46  
51  
56  
61  
66  
2000  
14  
19  
24  
29  
34  
39  
44  
49  
54  
59  
64  
4000  
12  
17  
22  
28  
33  
38  
43  
48  
53  
58  
63  
8000  
11  
16  
21  
27  
32  
37  
42  
47  
52  
57  
62  
NC-15  
NC-20  
NC-25  
NC-30  
NC-35  
NC-40  
NC-45  
NC-50  
NC-55  
NC-60  
NC-65  
17  
27  
31  
36  
40  
45  
49  
54  
58  
63  
68  
80/66 F  
100/82 F  
68 F  
80 F  
WATER LIMITS  
50KQL  
Cooling  
30 F*  
86 F  
Heating  
21 F*  
70 F  
Min. Entering Water  
Normal Entering Water  
Max. Entering Water  
110 F  
90 F  
WSHP sound control  
LEGEND  
db  
wb  
—
—
Dry Bulb  
Wet Bulb  
Analyzing the projected sound level in the conditioned  
space caused by a WSHP unit is quite involved. The key is  
to have good sound power ratings (Lw) in dB on the equip-  
ment to determine the ductwork, ceiling and room sound  
attenuation effect.  
*Requires optional extended range insulation package when operating below the dew point.  
NOTES:  
1. Minimum Air and Water conditions can only be used at ARI/ISO 13256-1 flow rates.  
2. The 50KQL units may have up two values at maximum or minimum with all other param-  
eters at normal conditions.  
Solenoid valves  
In applications using variable flow pumping, solenoid  
valves can be factory installed and operated from the con-  
trol board in the Aquazone™ WSHP unit.  
Console units  
With console units, the fan and compressor are located  
within the space, and only the casing design attenuates the  
transmission of sound sources into the space. The designer  
should carefully review the manufacturer’s acoustical data  
when selecting console units and use lower fan speeds to  
minimize space noise.  
Freeze protection  
Applications where systems are exposed to outdoor  
temperatures below freezing (32 F) must be protected from  
freezing. The most common method of protecting water  
systems from freezing is adding glycol concentrations into  
the water. Use design care when selecting both the type  
and concentrations of glycol due to the following:  
Operating limits  
Environment  
This equipment is designed for indoor installation ONLY.  
Power supply  
A voltage variation of 10% of nameplate utilization volt-  
age is acceptable.  
• Equipment and performance may suffer with high con-  
centrations of glycol and other antifreeze solutions  
• Loss of piping pressure may increase greatly, resulting  
in higher pumping costs  
• Higher mixture viscosity may cause excess corrosion  
and wear on the entire system  
• The water’s acidity may be greatly increased, promoting  
corrosion  
Starting conditions  
The 50KQL unit will start and operate in an ambient tem-  
perature of 50 F, with entering air temperature at 50 F,  
with entering water temperature at 60 F, with both air and  
water at the flow rates used in the ARI/ISO Standard  
13256-1 rating test, for initial start-up in winter.  
NOTE: These are not normal or continuous operating  
conditions. Such a start-up should be used to bring the  
building space up to occupancy temperature.  
Glycol promotes galvanic corrosion in systems of dissimilar  
metals. The result is corrosion of one metal by the other,  
causing leaks.  
Electrical data  
VOLTAGE  
Min  
COMPRESSOR  
RLA LRA  
VOLTS-PHASE  
(60 Hz)  
FAN MOTOR  
FLA  
TOTAL UNIT  
FLA  
MIN CIRCUIT  
AMP  
MAX FUSE/  
HACR  
50KQL  
Max  
127  
253  
291  
127  
253  
291  
127  
253  
291  
253  
291  
253  
291  
115-1  
208/230-1  
265-1  
104  
187  
239  
104  
187  
239  
104  
187  
239  
187  
239  
187  
239  
7.1  
3.7  
2.8  
9.0  
4.7  
3.8  
10.6  
6.1  
4.8  
7.0  
5.4  
7.7  
5.8  
46.5  
19.0  
16.0  
46.5  
23.0  
16.0  
63.0  
29.0  
21.6  
33.2  
29.0  
38.0  
29.0  
0.50  
0.33  
0.35  
1.30  
0.50  
0.50  
1.30  
0.50  
0.50  
1.10  
1.00  
1.10  
1.00  
7.6  
4.0  
3.1  
10.3  
5.2  
4.3  
11.9  
6.6  
5.3  
8.1  
6.4  
8.8  
6.8  
9.3  
5.0  
3.8  
12.5  
6.3  
5.3  
14.6  
8.1  
6.5  
9.8  
7.8  
15  
15  
15  
20  
15  
15  
25  
15  
15  
15  
15  
15  
15  
07  
115-1  
09  
12  
208/230-1  
265-1  
115-1  
208/230-1  
265-1  
208/230-1  
265-1  
208/230-1  
265-1  
15  
19  
10.7  
8.2  
LEGEND  
Full Load Amps  
FLA  
—
HACR — Heating, Air Conditioning and Refrigeration  
LRA  
RLA  
—
—
Locked Rotor Amps  
Rated Load Amps  
24  
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Typical wiring schematics  
MANUAL CHANGEOVER WITH COMPLETE C CONTROLLER  
GROUND  
COMPRESSOR  
BLU  
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER  
H
S
CAP  
RED  
R
CONDUCTORS ONLY.  
SEE NOTE 2  
8
4
6
2
C
RED  
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
POWER SUPPLY CONNECTION  
CR  
F
BLK  
BLK  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
PUSH BUTTON SWITCH ATTRIBUTES  
X = CLOSED O = OPEN  
A (LOW)  
RED  
5A  
SEE  
NOTE 3  
TRANS  
BLK  
BLK  
TERMINALS  
1
2
3
4
5
6
7
8
CB*  
24V  
BLK  
5
1A 1B 2A 3A 4A 5A 6A 7A 8A  
RED  
6A  
6
BLK  
ORG  
230V  
STOP  
X
X
X
X
O
O
O
O
O
O
X
X
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
BLK  
7A  
PBS  
7
FAN ONLY  
LOW FAN  
HIGH FAN  
O
TRANSFORMER PRIMARY  
LEAD COLORS  
SEE  
NOTE 7  
SEE  
NOTE 7  
1
0
CR  
VOLTAGE  
LEAD COLOR  
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
BLU  
BRN  
YEL  
BR BRG CCG  
CC  
BRN  
BRN  
BRN  
YEL  
C
TEST PINS  
SEE  
BR2  
COMPR.  
RELAY  
RED  
1
HP  
2
3
LOC  
4
5
FP1  
6
R
Y
HP  
RED  
BLU  
BR1  
BLOWER MOTOR WIRING  
UNIT SIZE POLE A POLE B  
NOTE 4  
JW3  
FP1  
JW2  
FP2  
LOC  
BRN  
GRY  
GRY  
VIO  
YEL  
2
2A  
3A  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
YEL  
Y
1
FP1  
SEE  
NOTE 4  
FP2  
RED  
PBS  
W
DIP SWITCH  
UMT  
3
ORG  
RED  
2
1
PM: DISABLED/  
ENABLED  
STAGE 2: 2/1  
NOT USED  
NOT USED  
3
O
G
YEL  
7
FP2  
2
3
4
VIO  
8
RED  
GRY  
RED  
BRN  
ORG  
NOT USED  
YEL  
R
9
10  
5
5A  
RV  
RVS  
CO  
RED RED  
C
BRN  
5
FP1/FP2  
FAULTS: 3/1  
JW1  
AL1  
AL2  
OFF ON  
6
7
6A  
RED  
CO12  
P2  
STATUS  
LED  
G
YEL  
SEE  
NOTE 6  
RED  
1
ALARM  
RELAY  
A
P1  
24V  
DC  
COMPLETE C  
MICRO-  
PROCESSOR  
CONTROL  
LOGIC  
7A  
BRN  
GROUND  
PB  
1A  
EH1  
EH2  
CAP  
RED  
YEL  
DM  
1B  
CO P3  
YEL YEL  
ORG  
BRN  
WV  
TRANSFORMER  
CR  
BR1  
BR2  
PBS  
COMPLETE  
C
CONTROL  
UMT  
LEGEND  
*Optional wiring.  
NOTES:  
AL  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts  
Blower Motor  
Blower Relay  
Relay/Contactor Coil  
Solenoid Coil  
BM  
1. Compressor and blower motor thermally pro-  
tected internally.  
BR  
CAP  
CB  
Capacitor  
2. All wiring to the unit must comply with local  
codes.  
3. Transformer is wired to 115-V (WHT) lead for  
115/1/60 units, 265-V (BRN) lead for 265/1/60  
units or 208-V (RED) lead for 208/1/60 units.  
Circuit Breaker  
CO  
Sensor, Condensate Overflow  
Compressor Relay  
Thermistor  
CR  
DM  
Damper Motor  
Circuit Breaker  
FP1  
FP2  
HP  
Sensor, Water Coil Freeze Protection  
Sensor, Air Coil Freeze Protection  
High-Pressure Switch  
Jumper Wire for Alarm  
Loss of Charge Pressure Switch  
Power Terminal Block  
Push Button Switch  
Relay Contacts-N.O.  
Switch-Temperature  
For 203/1/60 switch RED and ORG leads at L1  
and insulate RED lead.  
Transformer is energy limiting or may have circuit  
breaker.  
JW1  
LOC  
PB  
Switch-High Pressure  
Switch-Low Pressure  
Ground  
4. FP1 thermistor provides freeze protection for  
WATER. When using ANTI-FREEZE solutions,  
cut JW3 jumper.  
5. Typical unit-mounted thermostat wiring shown.  
6. 24-V alarm signal shown. For dry alarm contact,  
cut JW1 jumper and dry contact will be available  
between AL1 and AL2.  
7. Transformer secondary ground via Complete C  
board standoffs and screws to control box.  
(Ground available from top two standoffs as  
shown.)  
PBS  
PM  
Performance Monitor  
RVS  
TRANS  
UMT  
WV  
Reversing Valve Solenoid  
Transformer  
Unit Mounted Thermostat  
Water Valve  
Wire Nut  
Mate-N-Lock  
----------  
Field Line Voltage Wiring  
Field Low-Voltage Wiring  
Printed Circuit Trace  
25  
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Typical wiring schematics (cont)  
MANUAL CHANGEOVER WITH DELUXE D CONTROLLER  
GROUND  
COMPRESSOR  
BLU  
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER CONDUCTORS ONLY.  
SEE NOTE 2  
H
S
CAP  
RED  
R
8
4
6
2
C
RED  
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
CR  
F
BLK  
BLK  
POWER SUPPLY CONNECTION  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
A (LOW)  
SEE  
NOTE 3  
TRANS  
CB*  
24V  
BLK  
ORG  
230V  
RED  
GRY  
BLK  
YEL  
BLU  
SEE  
NOTE 7  
TRANSFORMER PRIMARY  
LEAD COLORS  
C
R
FAN ENABLE  
VOLTAGE  
LEAD COLOR  
R C S  
S
C
RELAY  
COM2 COM1  
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
COM  
P1  
Y1  
NO  
YEL  
RED  
2
BLK  
YEL  
1
2
2A  
ORG  
UMT  
GRY  
Y2  
FAN  
ORG  
SPEED  
RELAY  
W1  
O/W2  
G
3
4
5
COM  
RED  
2
3A  
3
3
NC  
DELUXE D  
MICROPROCESSOR  
CONTROL LOGIC  
NO  
GRY  
RED  
R
C
6
7
8
BRN  
1
RED  
RED  
BLU  
BRN  
GRY  
GRY  
HP  
HP  
1A  
BRN  
2
3
4
AL1  
SEE  
NOTE 6  
1
ALARM  
RELAY  
LOC  
LOC  
FP1  
P2  
AL2  
R
PBS  
1B  
DM  
YEL YEL YEL  
JW4  
ORG  
RED  
STATUS  
TEST  
FAULT  
G
5
6
AL2  
DRY  
FP1  
SEE  
Y
TIME CLOCK  
RED  
5
GRY  
NOTE 4  
7
8
9
VIO  
VIO  
BRN  
ORG  
NSB  
C
R
FP2  
RV  
CLOSED-UNOCCUPIED  
FP2  
BRN  
OS  
RV RELAY  
ESD  
OVR  
H
RVS  
CO  
10  
5A  
WHT  
RED PBS GRY  
NOT USED  
YEL  
TEST  
PINS  
GRY  
YEL  
6
6A  
RED WHT  
NLL  
CO 12  
P7  
A
WV  
JW3  
RED  
7
SEE  
P3  
24V  
DC  
FP1 LOW  
7A  
GRY  
NOTE 4  
R
JW2  
FP2 LOW  
JW1  
LP N.O.  
EH1  
EH2  
P6  
NO1  
NC1  
COM  
NO2  
NC2  
COM  
R
ACC1  
BLOWER MOTOR WIRING  
RELAY  
OFFON  
OFFON  
CCG  
UNIT SIZE POLE A  
POLE B  
BRN  
1
PM: DISABLE/ENABLE  
UNIT STAGE: 2/1  
T’STAT: HEAT COOL/HEAT PUMP  
RV ON B/RV ON O  
DEHUMID/NORMAL  
NOT USED  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ACC1  
FUNCTIONS  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
ACC2  
COMPR  
RELAY  
CR  
YEL  
RELAY  
GROUND  
LOG  
ACC2  
FUNCTIONS  
0
PB  
CC  
CAP  
BOILERLESS: ENABLE/DISABLE  
BOILERLESS: 40°F/50°F  
H: HI FAN/DEHUMID  
NOT USED  
S2  
DIP SWITCH PACKAGE  
S1  
DIP SWITCH PACKAGE  
TRANSFORMER  
CR  
PUSH BUTTON SWITCH ATTRIBUTES  
X = CLOSED  
TERMINALS  
O = OPEN  
BR 1  
(LO)  
1
2
3
4
5
6
7
8
DELUXE D  
CONTROL  
1A 1B 2A 3A 4A 5A 6A 7A 8A  
OS  
STOP  
FAN ONLY  
LOW COOL  
HIGH COOL O  
LOW HEAT  
HIGH HEAT  
X
X
O
O
O
X
X
O
O
O
O
X
X
O
O
O
O
O
O
X
O
O
O
O
X
O
X
O
O
O
O
O
O
X
O
X
O
O
O
X
O
X
O
O
O
O
O
X
BR 2  
(HI)  
UMT  
X
X
PBS  
X
X
O
LEGEND  
AL  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts  
Blower Motor  
Blower Relay  
*Optional wiring.  
NOTES:  
Printed Circuit Trace  
BM  
BR  
Relay/Contactor Coil  
Solenoid Coil  
1. Compressor and blower motor thermally protected  
internally.  
CAP  
CB  
Capacitor  
Circuit Breaker  
2. All wiring to the unit must comply with local codes.  
3. Transformer is wired to 115-V (WHT) lead for 115/1/60  
units, 265-V (BRN) lead for 265/1/60 units or 208-V  
(RED) lead for 208/1/60 units.  
CO  
Sensor, Condensate Overflow  
Compressor Relay  
CR  
Thermistor  
DM  
Damper Motor  
FP1  
FP2  
HP  
Sensor, Water Coil Freeze Protection  
Sensor, Air Coil Freeze Protection  
High-Pressure Switch  
Jumper Wire for Alarm  
Loss of Charge Pressure Switch  
Night Low Limit Switch  
Override Switch  
Circuit Breaker  
For 203/1/60 switch RED and ORG leads at L1 and insu-  
late RED lead.  
Transformer is energy limiting or may have circuit  
breaker.  
Relay Contacts-N.O.  
Switch-Temperature  
JW1  
LOC  
NLL  
OS  
4. FP1 thermistor provides freeze protection for WATER.  
When using ANTI-FREEZE solutions, cut JW3 jumper.  
5. Typical unit-mounted thermostat wiring shown.  
6. 24-V alarm signal shown. For dry alarm contact, cut AL2  
DRY (JW4) jumper and dry contact will be available  
between AL1 and AL2.  
Switch-High Pressure  
Switch-Low Pressure  
PB  
PBS  
PM  
RVS  
TRANS  
UMT  
WV  
Power Terminal Block  
Push Button Switch  
Performance Monitor  
Reversing Valve Solenoid  
Transformer  
Ground  
7. Transformer secondary ground via Deluxe  
D
board  
Unit Mounted Thermostat  
Water Valve  
standoffs and screws to control box. (Ground available  
from top two standoffs as shown.)  
Wire Nut  
Mate-N-Lock  
----------  
Field Line Voltage Wiring  
Field Low-Voltage Wiring  
26  
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AUTOMATIC CHANGEOVER WITH COMPLETE C CONTROLLER  
GROUND  
COMPRESSOR  
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER CONDUCTORS ONLY.  
SEE NOTE 2  
H
BLU  
S
CAP  
RED  
R
8
4
6
2
C
RED  
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
CR  
POWER SUPPLY CONNECTION  
F
BLK  
BLK  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
A (LOW)  
RED  
5A  
SEE  
NOTE 3  
TRANS  
BLK  
BLK  
CB*  
24V  
BLK  
5
RED  
PUSH BUTTON SWITCH ATTRIBUTES  
X = CLOSED O = OPEN  
TERMINALS  
6A  
6
BLK  
ORG  
230V  
BLK  
7A  
PBS  
7
1
2
3
4
5
6
7
8
1A 1B 2A 3A 4A 5A 6A 7A 8A  
STOP  
X
X
X
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
TRANSFORMER PRIMARY  
LEAD COLORS  
FAN ONLY  
LOW FAN  
HIGH FAN  
VOLTAGE  
LEAD COLOR  
SEE  
NOTE 7  
SEE  
NOTE 7  
1
0
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
O
BRN  
YEL  
BR BRG CCG  
CC  
BLU  
BRN  
BRN  
BRN  
YEL  
C
TEST PINS  
SEE  
BR2  
BR1  
COMPR.  
RELAY  
RED  
RED  
BLU  
BRN  
GRY  
GRY  
VIO  
R
Y
1
2
HP  
HP  
NOTE 4  
3
LOC  
4
5
FP1  
6
JW3  
LOC  
UMT  
ORG  
FP1  
YEL  
4
1
JW2  
Y
W
FP2  
5
FP1  
DIP SWITCH  
YEL  
SEE  
ORG  
2
1
PM: DISABLED/  
ENABLED  
STAGE 2: 2/1  
NOT USED  
NOT USED  
NOTE 4  
O
RED  
3A  
6
3
7
RED  
RED  
FP2  
FP2  
2
3
4
G
8
VIO  
3
PBS  
RED  
R
BRN  
ORG  
9
10  
RV  
RVS  
5
5A  
C
RED RED  
BRN  
YEL  
5
FP1/FP2  
JW1  
NOT USED  
YEL  
FAULTS: 3/1  
AL1  
AL2  
OFF ON  
6
7
6A  
RED  
CO12  
P2  
24V  
DC  
CO  
STATUS  
G
LED  
RED  
YEL  
SEE  
ALARM  
RELAY  
A
P1  
NOTE 6  
7A  
COMPLETE C  
MICRO-  
PROCESSOR  
CONTROL  
LOGIC  
EH1  
EH2  
P3  
GROUND  
PB  
CAP  
DM  
YEL YEL  
BRN  
ORG BRN  
CO  
WV  
BLOWER MOTOR WIRING  
TRANSFORMER  
UNIT SIZE POLE A POLE B  
CR  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
BR1  
PBS  
COMPLETE  
C
CONTROL  
BR2  
UMT  
*Optional wiring.  
NOTES:  
LEGEND  
AL  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts  
Blower Motor  
Printed Circuit Trace  
Relay/Contactor Coil  
1. Compressor and blower motor thermally pro-  
tected internally.  
BM  
BR  
Blower Relay  
2. All wiring to the unit must comply with local  
codes.  
3. Transformer is wired to 115-V (WHT) lead for  
115/1/60 units, 265-V (BRN) lead for 265/1/60  
units or 208-V (RED) lead for 208/1/60 units.  
For 203/1/60 switch RED and ORG leads at L1  
and insulate RED lead.  
CAP  
CB  
Capacitor  
Circuit Breaker  
Solenoid Coil  
Thermistor  
CO  
Sensor, Condensate Overflow  
Compressor Relay  
CR  
DM  
Damper Motor  
Circuit Breaker  
FP1  
FP2  
HP  
Sensor, Water Coil Freeze Protection  
Sensor, Air Coil Freeze Protection  
High-Pressure Switch  
Jumper Wire for Alarm  
Loss of Charge Pressure Switch  
Power Terminal Block  
Relay Contacts-N.O.  
Switch-Temperature  
Transformer is energy limiting or may have cir-  
cuit breaker.  
JW1  
LOC  
PB  
4. FP1 thermistor provides freeze protection for  
WATER. When using ANTI-FREEZE solutions,  
cut JW3 jumper.  
5. Typical unit-mounted thermostat wiring shown.  
6. 24-V alarm signal shown. For dry alarm con-  
tact, cut JW1 jumper and dry contact will be  
available between AL1 and AL2.  
7. Transformer secondary ground via Complete  
C board standoffs and screws to control box.  
(Ground available from top two standoffs as  
shown.)  
Switch-High Pressure  
Switch-Low Pressure  
Ground  
PBS  
PM  
Push Button Switch  
Performance Monitor  
RVS  
TRANS  
UMT  
WV  
Reversing Valve Solenoid  
Transformer  
Unit Mounted Thermostat  
Water Valve  
Wire Nut  
----------  
Field Line Voltage Wiring  
Field Low-Voltage Wiring  
Mate-N-Lock  
27  
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Typical wiring schematics (cont)  
AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER  
GROUND  
COMPRESSOR  
BLU  
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER CONDUCTORS ONLY.  
SEE NOTE 2  
H
S
CAP  
RED  
R
8
4
6
2
C
RED  
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
CR  
POWER SUPPLY CONNECTION  
F
BLK  
BLK  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
A (LOW)  
RED  
GRY  
CB*  
BLK  
TRANS  
ORG  
230V  
BLK  
24V  
BLU  
SEE  
NOTE 3  
YEL  
P1  
SEE  
NOTE 7  
TRANSFORMER PRIMARY  
LEAD COLORS  
C
R
FAN ENABLE  
R C S  
S
C
VOLTAGE  
LEAD COLOR  
RELAY  
COM2 COM1  
COM  
NO  
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
YEL  
Y1  
1
2
1
4
UMT  
YEL  
RED  
ORG  
GRY  
Y2  
FAN  
ORG  
SPEED  
COM  
W1  
O/W2  
G
3
4
5
RELAY  
6
2
5
RED  
3
GRY  
BRN  
NC  
NO  
DELUXE D  
MICROPROCESSOR  
CONTROL LOGIC  
R
C
6
7
8
3
3A  
1
2
RED  
RED  
BLU  
BRN  
GRY  
GRY  
HP  
HP  
BRN  
AL1  
SEE  
NOTE 6  
3
4
ALARM  
RELAY  
LOC  
LOC  
FP1  
P2  
AL2  
R
DM  
JW4  
ORG  
RED  
TIME CLOCK  
YEL YEL YEL  
G
STATUS  
TEST  
FAULT  
R
5
AL2  
DRY  
FP1  
SEE  
6
7
Y
RED  
GRY  
NOTE 4  
VIO  
VIO  
NSB  
C
FP2  
CLOSED-UNOCCUPIED  
8
9
10  
FP2  
BRN  
OS  
RV RELAY  
BRN  
ORG  
RV  
ESD  
OVR  
H
RVS  
5
5A  
WHT  
RED PBS GRY  
NOT USED  
YEL  
TEST  
PINS  
GRY  
YEL  
6
6A  
RED WHT  
NLL  
CO  
12  
CO  
P7  
A
WV  
JW3  
SEE  
RED  
7
P3  
24V  
DC  
FP1 LOW  
NOTE 4  
7A  
GRY  
R
JW2  
FP2 LOW  
JW1  
LP N.O.  
EH1  
EH2  
P6  
NO1  
NC1  
COM  
NO2  
NC2  
COM  
R
ACC1  
RELAY  
OFFON  
OFFON  
CCG  
BRN  
1
PM: DISABLE/ENABLE  
UNIT STAGE: 2/1  
T’STAT: HEAT COOL/HEAT PUMP  
RV ON B/RV ON O  
DEHUMID/NORMAL  
NOT USED  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ACC1  
FUNCTIONS  
ACC2  
COMPR  
RELAY  
CR  
RELAY  
YEL  
ACC2  
FUNCTIONS  
0
CC  
BOILERLESS: ENABLE/DISABLE  
BOILERLESS: 40°F/50°F  
H: HI FAN/DEHUMID  
NOT USED  
GROUND  
LOG  
PB  
S2  
DIP SWITCH PACKAGE  
S1  
CAP  
DIP SWITCH PACKAGE  
TRANSFORMER  
CR  
PUSH BUTTON SWITCH ATTRIBUTES  
X = CLOSED O = OPEN  
BR 1  
(LO)  
TERMINALS  
1
2
3
4
5
6
7
8
BLOWER MOTOR WIRING  
1A 1B 2A 3A 4A 5A 6A 7A 8A  
UNIT SIZE  
POLE A  
POLE B  
STOP  
X
X
X
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
DELUXE D  
CONTROL  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
OS  
FAN ONLY  
LOW FAN  
HIGH FAN  
BR 2  
(HI)  
O
UMT  
PBS  
LEGEND  
*Optional wiring.  
NOTES:  
AL  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts  
Blower Motor  
Printed Circuit Trace  
Relay/Contactor Coil  
BM  
BR  
Blower Relay  
1. Compressor and blower motor thermally protected internally.  
2. All wiring to the unit must comply with local codes.  
3. Transformer is wired to 115-V (WHT) lead for 115/1/60 units,  
265-V (BRN) lead for 265/1/60 units or 208-V (RED) lead for  
208/1/60 units.  
CAP  
CB  
Capacitor  
Circuit Breaker  
Solenoid Coil  
Thermistor  
CO  
Sensor, Condensate Overflow  
Compressor Relay  
CR  
DM  
Damper Motor  
For 203/1/60 switch RED and ORG leads at L1 and insulate  
RED lead.  
FP1  
FP2  
HP  
Sensor, Water Coil Freeze Protection  
Sensor, Air Coil Freeze Protection  
High-Pressure Switch  
Jumper Wire for Alarm  
Loss of Charge Pressure Switch  
Night Low Limit Switch  
Override Switch  
Circuit Breaker  
Transformer is energy limiting or may have circuit breaker.  
4. FP1 thermistor provides freeze protection for WATER. When  
using ANTI-FREEZE solutions, cut JW3 jumper.  
5. Typical unit-mounted thermostat wiring shown.  
6. 24-V alarm signal shown. For dry alarm contact, cut AL2  
DRY (JW4) jumper and dry contact will be available between  
AL1 and AL2.  
Relay Contacts-N.O.  
JW1  
LOC  
NLL  
OS  
Switch-Temperature  
Switch-High Pressure  
PB  
PBS  
PM  
RVS  
TRANS  
UMT  
WV  
Power Terminal Block  
Push Button Switch  
Switch-Low Pressure  
Ground  
7. Transformer secondary ground via Deluxe D board standoffs  
and screws to control box. (Ground available from top two  
standoffs as shown.)  
Performance Monitor  
Reversing Valve Solenoid  
Transformer  
Unit Mounted Thermostat  
Water Valve  
Wire Nut  
----------  
Field Line Voltage Wiring  
Field Low-Voltage Wiring  
Mate-N-Lock  
28  
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REMOTE-MOUNTED THERMOSTAT WITH COMPLETE C CONTROLLER  
GROUND  
COMPRESSOR  
S
R
C
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER CONDUCTORS ONLY.  
SEE NOTE 2  
H
BLU  
RED  
CAP  
RED  
8
4
6
2
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
CR  
POWER SUPPLY CONNECTION  
F
BLK  
BLK  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
A (LOW)  
RED  
SEE  
NOTE 3  
TRANS  
COM  
NO  
BLK  
CB*  
24V  
BLK  
2
BLK  
BR  
1
BLK  
FSS  
ORG  
230V  
YEL  
ORG  
0
TRANSFORMER PRIMARY  
LEAD COLORS  
DM  
BR  
YEL  
BRN  
SEE  
NOTE 7  
1
1
0
VOLTAGE  
LEAD COLOR  
SEE  
NOTE 7  
CR  
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
TRANS  
BLK  
YEL GRY BRN BRN BRN  
BR BRG CCG  
YEL  
CB  
24V  
RED  
CC  
(220V)  
BLU  
YEL  
ORG (240V)  
C
R
TEST PINS  
SEE  
BRN  
TYPICAL HEAT PUMP T-STAT  
SEE NOTE 5  
COMPR.  
RELAY  
RED  
RED  
BLU  
BRN  
GRY  
GRY  
VIO  
1
2
HP  
HP  
CLASS 1 WIRING  
REQUIRED INSIDE  
CONTROL BOX  
CLASS 1 OR 2  
WIRING ACCEPTABLE  
OUTSIDE  
NOTE 4  
Y
3
LOC  
4
5
FP1  
6
JW3  
LOC  
CONTROL BOX  
FP1  
COMPRESSOR  
Y
JW2  
Y
FP2  
FP1  
W
O
G
R
C
DIP SWITCH  
SEE  
COOLING  
FAN  
O
G
R
C
L
1
PM: DISABLED/  
ENABLED  
STAGE 2: 2/1  
NOT USED  
NOT USED  
NOTE 4  
7
FP2  
FP2  
2
3
4
VIO  
8
24 VAC  
COMMON  
ALARM  
BRN  
9
10  
RVS  
RV  
ORG  
5
FP1/FP2  
FAULTS: 3/1  
JW1  
NOT USED  
YEL  
AL1  
AL2  
OFF ON  
CO  
STATUS  
LED  
CO12  
P2  
G
SEE  
NOTE 6  
ALARM  
RELAY  
A
24V  
DC  
COMPLETE C  
MICRO-  
PROCESSOR  
CONTROL  
LOGIC  
P1  
BRN  
WV  
YEL  
EH1  
EH2  
P3  
GROUND  
PB  
CAP  
CO  
TRANSFORMER  
CR  
BLOWER MOTOR WIRING  
UNIT SIZE POLE A POLE B  
BR  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
COMPLETE  
C
CONTROL  
*Optional wiring.  
NOTES:  
LEGEND  
1. Compressor and blower motor thermally protected  
internally.  
2. All wiring to the unit must comply with local codes.  
3. Transformer is wired to 115-V (WHT) lead for 115/  
1/60 units, 265-V (BRN) lead for 265/1/60 units or  
208-V (RED) lead for 208/1/60 units.  
AL  
— Alarm Relay Contacts  
— Blower Motor  
— Blower Relay  
— Capacitor  
Printed Circuit Trace  
Relay/Contactor Coil  
BM  
BR  
CAP  
CB  
— Circuit Breaker  
Solenoid Coil  
Thermistor  
CO  
— Sensor, Condensate Overflow  
— Compressor Relay  
— Damper Motor  
For 203/1/60 switch RED and ORG leads at L1  
and insulate RED lead.  
Transformer is energy limiting or may have circuit  
breaker.  
CR  
DM  
FP1  
FP2  
FSS  
HP  
— Sensor, Water Coil Freeze Protection  
— Sensor, Air Coil Freeze Protection  
— Fan Speed Switch  
Circuit Breaker  
Relay Contacts-N.O.  
4. FP1 thermistor provides freeze protection for  
WATER. When using ANTI-FREEZE solutions, cut  
JW3 jumper.  
5. Typical heat pump thermostat wiring shown. Refer  
to thermostat Installation Instructions for wiring to  
the unit.  
6. 24-V alarm signal shown. For dry alarm contact,  
cut JW1 jumper and dry contact will be available  
between AL1 and AL2.  
7. Transformer secondary ground via Complete C  
board standoffs and screws to control box.  
(Ground available from top two standoffs as  
shown.)  
— High-Pressure Switch  
Switch-High Pressure  
Switch-Low Pressure  
Ground  
JW1  
LOC  
PB  
— Jumper Wire for Alarm  
— Loss of Charge Pressure Switch  
— Power Terminal Block  
PBS  
PM  
— Push Button Switch  
— Performance Monitor  
RVS  
— Reversing Valve Solenoid  
Wire Nut  
TRANS — Transformer  
Mate-N-Lock  
WV  
— Water Valve  
---------- Field Line Voltage Wiring  
Field Low-Voltage Wiring  
29  
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Typical wiring schematics (cont)  
REMOTE-MOUNTED THERMOSTAT WITH DELUXE D CONTROLLER  
GROUND  
COMPRESSOR  
BLU  
NEUTRAL ON 265V  
SYSTEMS  
POWER SUPPLY  
REFER TO DATA PLATE  
USE COPPER CONDUCTORS ONLY.  
SEE NOTE 2  
H
S
CAP  
RED  
R
8
4
6
2
C
RED  
RED  
C
L2  
L1  
REFER TO DISCONNECT  
BOX FOR OPTIONAL  
CR  
POWER SUPPLY CONNECTION  
F
BLK  
BLK  
L2 (ribbed)  
GROUND  
OPTIONAL  
CORD  
CONNECTION  
2
1
B (HIGH)  
BRN  
YEL  
BM  
L1 (plain)  
A (LOW)  
RED  
CB*  
24V  
BLK  
TRANS  
ORG  
230V  
BLK  
SEE  
NOTE 3  
YEL  
BLU  
TRANSFORMER PRIMARY  
LEAD COLORS  
BRN  
SEE  
NOTE 7  
1
3
VOLTAGE  
LEAD COLOR  
CLASS 1 OR 2 WIRING  
ACCEPTABLE  
115  
208  
230  
265  
WHT  
RED  
ORG  
BRN  
FSS  
2
C
R
FAN ENABLE  
RELAY  
COM  
R C S  
S
C
GRY  
GRY  
OUTSIDE  
CLASS 1 WIRING  
COM2 COM1  
CONTROL BOX REQUIRED INSIDE  
P1  
Y1  
NO  
COMPRESSOR  
Y
1
2
3
4
5
6
7
8
FAN  
Y1  
W1  
SPEED  
RELAY  
COM  
NO  
COOLING  
O
O/W2  
G
FAN  
NC  
G
DELUXE D  
MICROPROCESSOR  
CONTROL LOGIC  
24 VAC  
R
R
C
AL1  
COMMON  
C
1
RED  
HP  
HP  
ALARM  
X1  
2
3
SEE  
NOTE 6  
JW4  
RED  
BLU  
BRN  
GRY  
GRY  
VIO  
VIO  
BRN  
ORG  
ALARM  
RELAY  
LOC  
LOC  
FP1  
P2  
AL2  
R
NSB  
C
ESD  
OVR  
H
4
5
6
7
8
9
TYPICAL HEAT  
PUMP T-STAT  
G
STATUS  
RED  
AL2 DRY  
FP1  
FP2  
RV  
SEE NOTE 5  
SEE  
Y
TEST  
TIME CLOCK  
NOTE  
4
R
FAULT  
FP2  
BRN  
CLOSED=UNOCCUPIED  
RV  
BRN  
RELAY  
RVS  
10  
WHT  
NOT USED  
YEL  
TEST  
PINS  
CO12  
P7  
CO  
NLL  
BRN  
ORG  
YEL  
A
WV  
SEE  
JW3  
FP1 LOW  
JW2  
FP2 LOW  
JW1  
LP N.O.  
P3  
R
24V  
DC  
NOTE 4  
RED  
YEL  
YEL  
YEL  
NO1  
NC1  
COM  
NO2  
NC2  
COM  
R
EH1  
EH2  
P6  
DM  
ACC1  
OVERRIDE  
WITH DIGITAL T-STAT  
RELAY  
OFF ON  
CCG  
BRN  
1
1
PM: DISABLE/  
ACC2  
COMPR.  
RELAY  
OVERRIDE  
OVERRIDE  
ENABLE  
OV  
OV  
CR  
YEL  
OFF ON  
2
3
UNIT STAGE: 2/1  
T-STAT: HEAT COOL/  
HEAT PUMP  
RELAY  
BLOWER MOTOR WIRING  
UNIT SIZE POLE A POLE B  
1
2
3
4
5
6
7
8
0
ACC1  
GROUND  
CC  
FUNCTIONS  
LUG  
4
5
6
7
RV ON B/RV ON O  
DEHUMID/NORMAL  
NOT USED  
PB  
CAP  
ACC2  
07  
09  
12  
15  
19  
5
5
4
4
4
3
4
3
3
3
FUNCTIONS  
H: HI FAN/DEHUMID  
NOT USED  
TRANSFORMER  
CR  
BOILERLESS:  
ENABLE/DISABLE  
BOILERLESS:  
40°F/50°F  
8
BR 1  
(LO)  
S1  
S2  
DIP SWITCH  
PACKAGE  
DIP SWITCH  
PACKAGE  
DELUXE  
D
CONTROL  
BR 2  
(HI)  
*Optional wiring.  
NOTES:  
LEGEND  
AL  
— Alarm Relay Contacts  
— Blower Relay  
Printed Circuit Trace  
Relay/Contactor Coil  
BR  
1. Compressor and blower motor thermally protected  
internally.  
CAP  
CB  
— Capacitor  
— Circuit Breaker  
2. All wiring to the unit must comply with local codes.  
3. Transformer is wired to 115-V (WHT) lead for 115/1/60  
units, 265-V (BRN) lead for 265/1/60 units or 208-V  
(RED) lead for 208/1/60 units.  
CO  
— Sensor, Condensate Overflow  
— Compressor Relay  
Solenoid Coil  
Thermistor  
CR  
DM  
— Damper Motor  
FP1  
FP2  
FSS  
HP  
— Sensor, Water Coil Freeze Protection  
— Sensor, Air Coil Freeze Protection  
— Fan Speed Switch  
— High-Pressure Switch  
— Jumper Wire for Alarm  
— Loss of Charge Pressure Switch  
— Night Low Limit  
For 203/1/60 switch RED and ORG leads at L1 and  
insulate RED lead.  
Transformer is energy limiting or may have circuit  
breaker.  
Circuit Breaker  
Relay Contacts-N.O.  
JW1  
LOC  
NLL  
PB  
PBS  
PM  
RVS  
Switch-High Pressure  
Switch-Low Pressure  
Ground  
4. FP1 thermistor provides freeze protection for WATER.  
When using ANTI-FREEZE solutions, cut JW3 jumper.  
5. Typical heat pump thermostat wiring shown. Refer to  
thermostat Installation Instructions for wiring to the  
unit.  
6. 24-V alarm signal shown. For dry alarm contact, cut  
AL2 DRY (JW4) jumper and dry contact will be avail-  
able between AL1 and AL2.  
— Power Terminal Block  
— Push Button Switch  
— Performance Monitor  
— Reversing Valve Solenoid  
Wire Nut  
TRANS — Transformer  
WV  
---------- Field Line Voltage Wiring  
— Water Valve  
Mate-N-Lock  
7. Transformer secondary ground via Deluxe D board  
standoffs and screws to control box. (Ground available  
from top two standoffs as shown.)  
Field Low-Voltage Wiring  
30  
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PREMIERLINK™ CONTROLLER APPLICATIONS WITH COMPLETE C CONTROL  
COMPLETE  
C
CONTROL  
PREMIER  
LINK  
PWR  
Y
HS1/EXH/RVS  
CR  
W
CR  
O
G
LEGEND  
Control Relay  
LWT — Leaving Water Temperature Sensor  
SAT — Supply Air Temperature Sensor  
SPT — Space Temperature Sensor  
R
C
CR  
—
CMP1  
FAN  
AL1  
NOTE: Reversing valve is on in Cooling mode.  
AL2  
A
J5  
J6  
J4  
L
W
T
S
P
T
S
A
T
PREMIERLINK CONTROLLER APPLICATIONS WITH DELUXE D CONTROL  
PREMIER  
LINK  
PWR  
DELUXE  
D
CONTROL  
Y1  
Y2  
HS2  
HS1  
W1  
O/W2  
G
LEGEND  
CMP2  
CMP1  
FAN  
LWT — Leaving Water Temperature Sensor  
SAT — Supply Air Temperature Sensor  
SPT — Space Temperature Sensor  
NOTE: Reversing valve is on in Cooling mode.  
R
C
AL1  
J5  
J6  
J4  
L
W
T
S
P
T
S
A
T
31  
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Typical piping  
50KQL PIPING DETAIL  
5.36  
3.28  
(83)  
(136)  
Power Supply  
3.01  
(76)  
1.84  
(47)  
30°  
Water Out  
Water In  
0.87  
(22)  
Control Box  
Optional  
Autoflow  
Valve  
*16.66  
(423)  
Compressor  
Access  
7.5  
(191)  
Panel  
Optional  
Motorized  
Water Valve  
*1.94  
(49)  
*7.06  
(179)  
3.56  
(90)  
4.46  
(113)  
Water Connections  
5/8” (15.9 mm)  
OD Copper,  
0.75  
(19)  
3.88  
(99)  
3.43  
0.99  
Condensate  
5/8” (15.9 mm)  
ID Vinyl Hose  
(87) (25)  
11.54  
(293)  
1/2” FPT or  
1/2” MPT  
Optional  
Disconnect Box  
(mounted to cabinet  
not chassis)  
RIGHT HAND CONFIGURATION  
5.36  
3.50  
(89)  
(136)  
Power Supply  
3.01  
(76)  
1.93  
(49)  
Water Out  
Water In  
Optional  
Autoflow  
Valve  
30°  
0.87  
(22)  
Optional  
Motorized  
Water Valve  
3.42  
(87)  
Blower Deck  
*16.66  
(423)  
7.5  
(191)  
Water Connections  
5/8” (15.9 mm)  
OD Copper,  
*1.94  
(49)  
Blower Access Panel  
1/2” FPT or  
3.56  
(90)  
*7.06  
(179)  
1/2” MPT  
4.49  
(114)  
(293)  
11.54  
0.75  
(19)  
3.22  
(82)  
Optional  
Condensate  
Disconnect Box  
(mounted to cabinet  
not chassis)  
3.88  
(99)  
5/8” (15.9 mm)  
ID Vinyl Hose  
LEFT HAND CONFIGURATION  
*For installed dimension, add to dimension shown 2.9 in. with 3 in. subbase and 4.9 in. for 5 in. subbase.  
NOTES:  
1. Dimensions shown are in inches. Dimensions in parentheses are in millimeters.  
2. Optional autoflow valve, motorized water valve and disconnect box are shown.  
3. Water connection in same location regardless of connection type.  
32  
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Guide specifications  
5. Optional mute package shall consist of addi-  
tional sound attenuating materials strategically  
applied to the compressor compartment, and  
Console Water Source Heat Pumps  
HVAC Guide Specifications  
1
Size Range: 7,800 to 16,000 Btuh  
substitution of /2 in. noise dampening insula-  
1
Cooling Capacity  
tion for all surfaces that normally have /4 in.  
10,400 to 19,300 Btuh  
insulation.  
Heating Capacity  
C. Fan and Motor Assembly:  
Carrier Model Number: 50KQL  
Part 1 — General  
The fan motors shall be multi-speed permanently  
lubricated, PSC (permanent split capacitor) type  
with thermal overload protection. To facilitate field  
service all units shall have a slide out fan deck and  
quick electrical disconnect.  
1.01 SYSTEM DESCRIPTION  
A. Install Water Source Heat Pumps, as indicated on  
the plans with capacities and characteristics as listed  
in the schedule and the specifications that follow.  
Units shall be Carrier model 50KQL.  
B. Units shall be individually packaged with wooden  
skid covered with protective corner posts and plastic  
stretch wrapping for maximum protection.  
D. Refrigerant Components:  
1. Units shall have a sealed refrigerant circuit includ-  
ing a hermetic compressor, a refrigerant meter-  
ing device, a finned tube refrigerant-to-air heat  
exchanger, a reversing valve, a coaxial (tube-in-  
tube) refrigerant-to-water heat exchanger, and  
safety controls including a high-pressure sensor, a  
loss-of-charge sensor to protect against loss of  
refrigerant, and low water temperature (freeze-  
stat) sensor.  
2. Rotary compressors shall have thermal over-  
load protection and shall be located in an  
insulated compartment to minimize sound  
transmission. Units shall have the compressor  
mounted on isolators to reduce noise and vibra-  
tion transmission.  
1.02 QUALITY ASSURANCE  
A. All equipment listed in this section must be perfor-  
mance rated and certified in accordance with  
ARI/ISO Standard 13256-1, and safety listed in  
accordance with NRTL or CSA. All units shall have  
ARI/ISO and NRTL or CSA labels.  
B. All units shall be factory tested under normal operat-  
ing conditions at nominal water flow rates. Units  
which are tested without water flow are not accept-  
able. Standard operating range is 60 to 95 F enter-  
ing water temperature.  
3. Refrigerant-to-air heat exchangers shall utilize  
enhanced aluminum fins and rifled copper tube  
construction rated to withstand 425 psig refrig-  
erant working pressure.  
Part 2 — Product  
2.01 EQUIPMENT  
A. Heat Pump Assembly:  
Factory-tested and assembled single-piece packaged  
heating and cooling heat pump units shall be factory  
wired, charged with Non-CFC R-22, contain refrig-  
erant-to-water heat exchanger, air-to-refrigerant heat  
exchanger, 4-way reversing valve, fan motor assem-  
bly, compressor, TXV metering device, and all inter-  
nal controls and safety devices.  
4. Refrigerant-to-water heat exchangers shall be of  
copper inner water tube and steel refrigerant  
outer tube design rated to withstand 450 psig  
working refrigerant pressure.  
5. Reversing valve shall be four-way solenoid-  
activated refrigerant valves which shall fail to  
heating operation. If the unit fails to cooling a  
low-temperature thermostat must be provided  
to prevent over-cooling of the room.  
6. Optional coaxial water-to-refrigerant heat  
exchangers shall be cupronickel.  
7. Optional Extended Range for units operating  
with entering water temperatures below dew  
point. For use in operating range with entering  
water temperatures from 20 to 110 F.  
B. Unit Cabinet:  
1. The cabinet shall be constructed of heavy gage  
steel with welded corner bracing. A removable  
front cabinet allows easy service access to the  
chassis. The cabinet shall have a 30-degree  
sloped top with an aluminum rigid bar type dis-  
charge grille.  
2. An access door shall be provided to cover the  
swing down control section. For all capacities  
of the Console Heat Pump, the cabinet shall  
be one size (48 in. L x 12 in. D x 24 in. H).  
3. Options include a locking control panel for  
added security; a bottom or front return with  
left or right hand configurations for ease of  
installation. Available with 3 or 5 in. subbase,  
with or without motorized damper.  
E. Controls and Safeties:  
Units which may be reset at the disconnect switch  
only shall not be acceptable.  
1. Electrical:  
A control box shall be located within the unit  
and shall contain controls for compressor,  
reversing valve and fan motor operation.  
4. The cabinet shall be powder painted.  
33  
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Guide specifications (cont)  
2. Piping:  
r. The control box components shall be  
easily accessible with a swing out control  
compartment.  
5
a. Copper tubes with a /8-in. OD dimension  
shall be provided on the supply and return  
water connections for the purpose of  
forming a sweat connection to field-supplied  
distribution piping.  
s. Standard unit-mounted MCO (manual  
changeover) thermostat operating controls  
shall consist of temperature setting dial  
knob, push button switches for Stop, Fan  
only, Hi Cool, Lo Cool, Hi Heat, Lo Heat.  
Unit-mounted thermostats shall have a  
remote sensor for sensing the return-air  
temperature.  
b. Optional threaded connections: A 1/2-in.  
male or female pipe threaded fitting shall be  
factory mounted on the supply and return  
water connections.  
3. Unit Controls:  
5. The optional Deluxe D electronic control shall  
have all the features of the Complete C control,  
with the following additional features:  
Safety devices on all units shall include low-  
pressure sensor or loss-of-charge switch, high-  
pressure switch, low water temperature sensor,  
and condensate overflow switch.  
a. 75 va transformer.  
b. A removable thermostat connector.  
c. Random start on return from night setback.  
d. Minimized reversing value operation for  
extended life and quiet operation.  
e. Night setback control from low temperature  
thermostat, with 2-hour override initiated by  
a momentary signal from the thermostat.  
f. Dry contact night setback output for digital  
night setback thermostats.  
4. The standard Complete C electronic control  
system shall interface with the unit mounted or  
remote heat pump (Y,O) wall thermostat  
(mechanical or electronic). The control system  
shall have the following features:  
a. 50 va transformer.  
b. Anti-short cycle time delay on compressor  
operation; time delay shall be 5 minutes  
minimum.  
c. Random start on power-up.  
d. Low voltage protection.  
g. Ability to work with heat/cool (Y, W)  
thermostats.  
e. High voltage protection.  
f. Condensate overflow shutdown.  
g. Unit shutdown on low refrigerant pressures.  
h. Unit shutdown on high or low water temper-  
ature (selectable for antifreeze solutions).  
i. Option to reset unit at thermostat or discon-  
nect. Fault type shall be retained in memory  
if reset at thermostat.  
j. Automatic intelligent reset. Unit shall auto-  
matically restart 5 minutes after shutdown if  
the fault has cleared. Should a fault occur  
3 times sequentially, then lockout will occur.  
h. Ability to work with heat pump thermostats  
using O or B reversing valve control.  
i. Single grounded wire to initiate night set-  
back or emergency shutdown.  
j. Boilerless system control can switch auto-  
matically to electric heat at low loop water  
temperature.  
k. Control board shall allow up to 3 units to be  
operated from one thermostat without any  
auxiliary controls.  
l. A relay to operate an external damper. The  
control to be such that the damper will not  
open until 30 minutes after the unit comes  
back from Unoccupied mode.  
m. Fan speed selection at thermostat.  
n. A relay to restart a central pump or control a  
24-v motorized water valve.  
k. Ability to defeat time delays for servicing.  
l. Light-emitting diode (LED) to indicate high  
pressure, low pressure, improper voltage,  
water coil freeze protection, air coil freeze  
protection, condensate overflow, and con-  
trol status.  
m. Unit Performance Monitor to indicate ineffi-  
cient operating conditions prior to unit  
lockout.  
o. Intelligent fan speed selection based upon  
thermostat demand and/or dehumidistat  
signal.  
6. Carrier PremierLink™ Controller:  
n. Remote fault type indication at thermostat.  
o. Single harness connection for all safety  
devices.  
p. Selectable 24-v or pilot duty dry contact  
alarm output.  
q. 24-v output to cycle a motorized water valve  
with compressor contactor.  
This control will function with CCN (Carrier  
Comfort Network) and ComfortVIEW™  
software. It shall also be compatible with  
ComfortLink™ controllers. It shall be ASHRAE  
62-99 compliant and Internet ready. It shall  
accept a CO2 sensor in the conditioned space  
and be Demand Control Ventilation (DCV)  
ready. The communication rate must be 38.4K  
or faster.  
34  
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7. Optional Controls:  
G. Special Features:  
a. Unit-mounted ACO (automatic changeover)  
thermostat operating controls shall consist of  
temperature setting dial knob, push button  
switches for Stop, Fan only, Hi fan, Lo fan.  
Unit-mounted thermostats shall have a remote  
sensor for sensing the return-air temperature.  
b. Units designed for connection to remote wall  
mounted thermostat shall be wired such that  
the operating controls are at the thermostat.  
The controller shall be provided with a low  
voltage field wiring terminal block. The con-  
trol scheme shall accommodate MCO or  
ACO heat pump thermostats with Y, G, and  
O outputs. An alternate controller shall be  
available from the factory to accommodate  
the Heat/Cool thermostats.  
c. Motorized (2-way) water valves shall be  
factory installed and wired. The valve shall  
remain open when there is a cooling or  
heating demand and the compressor is  
running. The valve shall close when the  
compressor stops after satisfying the  
demand or due to lockout condition.  
1. Aquazone™ Thermostat Controls (for use with  
remote thermostat units):  
a. Programmable multi-stage thermostat with  
7-day clock, holiday scheduling, large backlit  
display and remote sensor capability.  
b. Programmable 7-Day Light-Activated Ther-  
mostat offers occupied comfort settings with  
lights on, unoccupied energy savings with  
lights off.  
c. Programmable 7-Day Flush-Mount Thermo-  
stat offers locking coverplate with tamper  
proof screws, flush to wall mount, dual point  
with adjustable deadband, O or B terminal,  
and optional remote sensor.  
d. Programmable 5-Day Thermostat offers  
2-stage heat, 2-stage cool, auto changeover,  
5-minute built-in compressor protection, lock-  
ing cover included.  
e. Non-programmable Thermostat with 2 heat  
stages, 2 cool stages, auto changeover,  
5-minute built-in compressor protection, lock-  
ing cover included.  
2. Aquazone System Control Panel:  
d. Fresh air dampers shall be motorized with a  
spring return. The damper shall open when  
Cooling or Heating mode selection is made  
from the unit-mounted switches. With a  
remote thermostat, the damper shall open  
any time the fan is in operation.  
The panel shall coordinate, monitor, and con-  
trol all WSHP units and ancillary equipment  
including cooling towers, boilers, and system  
pumps.  
3. Fire-Rated Hose kits:  
e. Night low limit thermostats shall include a  
unit-mounted thermostat sensing space tem-  
perature. Should the space temperature fall  
below the limit, the night low limit thermo-  
stat shall start the fan and compressor oper-  
ation in Heating mode.  
f. Units with the unit-mounted thermostat shall  
include a 2-hour override function. The  
override switch shall be readily accessible. In  
override mode the unit operation shall be  
the same as in occupied mode. Override  
mode shall be terminated automatically at  
the end of a 2-hour period.  
Hoses shall have a fixed MPT on one end and a  
swivel with an adapter on the other end. Hose  
kits shall be either stainless steel or galvanized.  
4. Ball Valves (Brass Body):  
Ball valves shall be for shutoff and balancing water  
flow. Valves shall be available with memory,  
memory stop, and pressure temperature ports.  
5. Y Strainers (Bronze Body):  
Strainers shall have “Y” type configuration with  
a brass cap. Strainers shall have a maximum  
operating pressure rating of 450 psi. Strainer  
screen shall be made of stainless steel.  
F. Electrical Requirements:  
6. Solenoid Valves (Brass Body):  
1. A control box shall be located within the unit  
compressor compartment and shall contain a  
50 va transformer, 24-volt activated, 3-pole  
compressor contactor, terminal block for  
thermostat wiring and solid-state controller for  
complete unit operation. Electro-mechanical  
operation WILL NOT be accepted.  
2. Units shall be nameplated for use with time-  
delay fuses or HACR circuit breakers.  
3. Unit controls shall be 24-volt and provide heating  
or cooling as required by the remote thermostat.  
Valves shall provide slow operation for quiet  
system application.  
7. Hose Kit Assemblies:  
Hose kits shall include a ported ball valve with  
pressure temperature (P/T) plug ports, flexible  
stainless steel hose with swivel and nipple.  
Return hose includes a ball valve, preset mea-  
sure flow (gpm) with two P/T ports, flexible  
stainless steel hose with a swivel and nipple.  
8. Remote Sensors:  
Sensors for Aquazone flush-mount thermostats  
shall be available.  
35  
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Guide specifications (cont)  
9. PremierLink™ accessories:  
supply air temperature sensors, communicat-  
ing room sensors, CO2 sensors, and linkage  
thermostats.  
PremierLink accessories shall provide a fully  
integrated DDC system. Accessories include  
Carrier Corporation • Syracuse, New York 13221  
3-04  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Book 1  
4
New  
Pg 36  
Catalog No. 525-00060  
Printed in U.S.A.  
Form 50KQL-1PD  
Replaces: 50KQ-6PD  
Book 1  
Tab 5a 5a  
Tab 1IP4a  
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