York Champion Ultra Bhp024 User Manual
036-21528-003-A-0703  
®
CHAMPION® ULTRA  
SINGLE PACKAGE  
HEAT PUMPS  
BHP024 THRU 048  
2 THRU 4 NOMINAL TONS  
13 SEER  
FACTORY MOUNTED TXV  
All units are completely wired, charged with R-22 and  
tested prior to shipment. Unique test stations, are used to  
insure product quality. Refrigerant charge, and component  
part numbers are verified via computers at manufacturing  
point. Vital run test statistics, such as, system pressure,  
motor currents, air velocity and temperature unit vibration  
are monitored and recorded by the system to insure unit  
performance.  
DESCRIPTION  
These packaged heat pumps are designed for outdoor  
installation. Only utility and duct connections are required  
at the point of installation.  
Field-installed electric heater accessories are available to  
provide electric heat, if required.  
STANDARD FEATURES / BENEFITS  
Equal size, side supply and return duct connections allow  
easy hook-up of ducts to match low crawl spaces without  
transition pieces.  
OPERATING EFFICIENCY  
All units provide high operating efficiencies of 13 SEER, 3.3  
COP or greater, and 7.6 HSPF. All efficiencies exceed leg-  
islated minimum levels.  
UTILITY CONNECTIONS MADE EASY  
Electrical utility knockouts are provided through the bottom,  
as well as the side of the unit. Utility connections can be  
made quickly and with a minimum amount of field labor. A  
field supplied and field installed electrical disconnect  
switch must be installed.  
ON SITE FLEXIBILITY  
All model sizes share a common, compact design cabinet  
with a single footprint. The installer has the flexibility of set-  
ting one curb or pad and placing the proper tonnage unit  
after the internal load has been determined. Field convert-  
ible duct connections, from side shot to down shot, allows  
the installer greater flexibility and the need to carry less  
inventory.  
CONVERTIBLE AIRFLOW DESIGN  
The bottom duct openings are covered when they leave the  
factory. They are ready for a side supply / side return appli-  
cation. If a bottom supply / bottom return application is  
desired, you simply remove the two panels from the bottom  
of the unit and place them in the side supply / side return  
duct openings. No panel cutting is required and no acces-  
sory panel is necessary. Convertible airflow design allows  
maximum field flexibility and minimum inventory.  
LOWER INSTALLATION COST  
Installation time and costs are reduced by easy power and  
control wiring connections. The small base dimension  
means less space is required on the ground or roof. Plus,  
the installer can fit this unit between the wheel wells of full  
size pick-up truck. All models are under 500 pounds.  
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE  
 
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PROTECTED COMPRESSOR  
rate field accessories of single enthalpy and dual  
enthalpy are also available.  
The compressor is internally protected against high  
pressure and temperature. This is accomplished by the  
simultaneous operation of high pressure relief valve  
and a temperature sensor which protects the compres-  
sor, if undesirable operating conditions occur.  
SINGLE ENTHALPY SENSOR  
Sensor replaces dry bulb sensor standard in econo-  
mizer kit. Provides improved economizer operation by  
sensing the dry bulb temperature from outdoors, plus  
the enthalpy content of the outdoor air.  
EXCLUSIVE COIL DESIGN  
Grooved copper tubes and enhanced aluminum fin  
construction improves heat transfer for maximum effi-  
ciency and durability.  
DUAL ENTHALPY SENSOR  
Additional sensor to single enthalpy sensor. Sensor  
selects both the return air temperature dry bulb and  
humidity, in conjunction with the single enthalpy, to  
determine the most economical mix. Single Enthalpy  
sensor also required.  
LOW MAINTENANCE  
Long life, permanently lubricated condenser and evap-  
orator fan motor bearings, need no annual mainte-  
nance. Blower assembly can be easily cleaned by the  
unique “Slip Track” slide-out blower assembly.  
UPGRADE PRESSURE PACKAGE  
Contains screw in type High pressure, Low Pressure/  
Loss of Charge switch, freeze protection switch and  
lockout relay. Switches are placed onto existing  
Schrader ports located in the unit by furnished adapt-  
ers. When abnormal conditions are sensed through the  
pressure switches, the unit will lock out, preventing any  
further operation until reset or problem is corrected.  
Package agency approved.  
SECURED SERVICE ACCESS PORTS  
Protected, externally mounted, re-usable service  
access ports are provided on both the high and low  
lines for ease of evacuating and charging the system.  
EASY SERVICE ACCESS  
A large, single hinged panel covers the electrical con-  
trols and makes servicing easy. The blower compart-  
ment has an additional large panel with a built-in  
handle tab. Removing this panel will allow the blower  
assembly to slide-out for easy removal for mainte-  
nance and ease of trouble shooting.  
HAIL GUARD KIT  
Kit contains protected grilles made of expanded alumi-  
num grilles with full perimeter 1-1/2 inch frame. Sloped  
hoods are also included to assure maximum protec-  
tion.  
REPLACEMENT PARTS  
FILTER / FRAME KIT (SINGLE PHASE ONLY)  
The installer has no need to carry an inventory of  
unique parts or needs special training to replace any of  
the components parts for these units. All are easily  
obtained from Source 1 or other major part houses.  
Kit contains the necessary hardware to field install  
return air filters into the base unit. Pre-cut filter racks  
and appropriate cleanable standard size filters are  
shipped in one kit (1" filter is supplied). This kit is avail-  
able for single phase horizontal or vertical duct applica-  
tion only. Standard in all 3 Phase models.  
FIELD-INSTALLED ACCESSORIES  
MOTORIZED FRESH AIR DAMPER  
ECONOMIZER DOWN DISCHARGE / SUPPLY KIT  
Designed for duct mounted side return and unit  
mounted down shot return applications. Damper capa-  
ble of providing 0% thru 50% of outdoor air (field sup-  
plied). Closes on power loss, includes hood and screen  
assembly.  
Modulating integrated economizer provides simulta-  
neous operation between the mechanical cooling and  
economizer operation. Independent blade design  
insures proper control and less than 1% leak rate.  
Includes hood and mesh bird screen filter integrated  
into the hood, dry bulb sensor and relief damper. Sepa-  
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RECTANGLE TO ROUND ADAPTERS  
unit mounted down shot applications. Includes hood  
and screen assembly.  
Kit includes one supply and one return air rectangle to  
round duct adapter. Adapters are preformed and  
designed to fit over current duct openings on the base  
unit. Transition is from 15" square to 14" round.  
WALL THERMOSTAT  
The units are designed to operate with 24-volt elec-  
tronic and electro-mechanical thermostats. All units  
can operate with single stage heat / single stage cool  
thermostats - with or without the economizer.  
ROOF CURBS  
NRCA approved curbs provide proper fit to base unit  
for rooftop installations. Curbs are designed to be  
assembled through hinge pins in each corner. Kit also  
provides seal strip to assure a water tight seal. Eight  
and 14 inch high roof curbs are available.  
ELECTRIC HEATERS  
Each heater package provides easy installation of elec-  
tric heat strips. Slide in design with plug in harness and  
agency approved. Heaters are available from 5.0 KW  
sizes and are designed for single point and dual con-  
nection.  
MANUAL OUTDOOR DAMPER  
Provides 0% thru 50% outdoor air capability (field  
adjustable). Designed for duct mounted side return and  
TABLE OF CONTENTS  
Description ............................................................................1  
Standard Features / Benefits ................................................1  
Field-installed Accessories ...................................................3  
Unit Cut Away .......................................................................5  
Ratings .................................................................................5  
Physical Data ........................................................................5  
Cooling Capacities - 2 Ton (BHP024) ..................................6  
Cooling Capacities - 2-1/2 Ton (BHP030) ............................7  
Cooling Capacities - 3 Ton (BHP036) ..................................8  
Cooling Capacities - 3-1/2 Ton (BHP042) ............................9  
Cooling Capacities - 4 Ton (BHP048) ................................10  
Heating Capacities - 2 Ton (BHP024) ................................11  
Heating Capacities - 2-1/2 Ton (BHP030) .........................11  
Heating Capacities - 3 Ton (BHP036) ................................12  
Heating Capacities - 3-1/2 Ton (BHP042) ..........................12  
Heating Capacities - 4 Ton (BHP048) ................................13  
Side & Bot. Sup. Air Blower Perf. (208/230/460 Volts) ...... 14  
Additional Static Resistance .............................................. 14  
Field Wiring Diagram ......................................................... 15  
Electrical Data (Basic Unit) ................................................ 16  
Electrical Data (13 Seer Heat Pump / Electric Heat) ......... 17  
Application Data ................................................................. 18  
Center of Gravity and Weights ........................................... 18  
Unit Clearances ................................................................. 18  
Unit Dimensions ................................................................. 19  
Typical Applications ........................................................... 20  
Roof Curb Dimensions ....................................................... 21  
Typical Wiring Diagram (208/230-1-60 Power Supply) ...... 22  
Typical Wiring Diagram (230-3-60 Power Supply) ............. 23  
Typical Wiring Diagram (460-3-60 Power Supply) ............. 24  
Mechanical Specifications .................................................. 25  
4
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DIRECT DRIVE  
CONDENSER  
FAN MOTOR  
HIGHLY EFFICIENT ENHANCED  
COPPER TUBE/ALUMINUM FIN  
INDOOR COIL  
HIGHLY EFFICIENT  
ENHANCED COPPER  
TUBE/ALUMINUM FIN  
OUTDOOR COIL  
BACK AND BOTTOM  
RETURN AIR  
AND SUPPLY AIR  
DUCT OPENING  
DECORATIVE  
PROTECTIVE  
COIL GUARD  
HIGH VOLTAGE  
TERMINAL BLOCK  
LOW VOLTAGE  
TERMINAL BLOCK  
ECM DIRECT DRIVE  
BLOWER MOTOR WITH  
SLIDE-OUT BLOWER ASSEMBLY  
LONG-LASTING  
POWDER PAINT  
FINISH  
HEAVY GAUGE  
REMOVABLE  
BASE RAILS  
HIGH-EFFICIENCY  
COMPRESSOR  
RIGIDLY  
MOUNTED  
FIGURE 1 - UNIT CUT AWAY  
TABLE 1: RATINGS  
COOLING CAPACITY1  
NET HEATING CAPACITY  
@47°F @17°F  
MBH  
AVAILABLE ELECTRIC HEAT  
NOMINAL CAPACITY KW  
SOUND  
RATING2  
(dbels)  
MODEL  
BHP  
1
80 / 67-95°F  
HSPF  
MBH  
24.4  
30.0  
35.5  
42.0  
47.0  
SEER  
13.0  
13.0  
13.0  
13.0  
13.0  
EER  
11.3  
11.3  
11.3  
11.3  
11.3  
COP  
3.40  
3.40  
3.30  
3.40  
3.30  
MBH  
11.0  
16.5  
18.9  
23.0  
25.8  
COP  
2.00  
2.20  
2.20  
2.20  
2.20  
SINGLE PHASE  
THREE PHASE  
024  
030  
036  
042  
048  
7.6  
7.6  
7.6  
7.6  
7.6  
79  
77  
77  
83  
82  
21.8  
28.2  
32.0  
42.0  
45.0  
5.0, 7.5, 10.0  
5.0, 7.5, 10.0, 15.0  
5.0, 7.5, 10.0, 15.0  
10.0, 15.0  
N / A  
10.0, 15.0  
10.0, 15.0  
10.0, 15.0  
10.0, 15.0, 20.0, 25.0  
10.0, 15.0, 20.0, 25.0  
1.  
2.  
Certified in accordance with the Uniary Small Equipment certification program, which is based on ARI Standard 210/240.  
Rated in accordance with ARI Standard 270.  
SEER =Seasonal Energy Efficiency Ratio - the total cooling output in BTU's during a normal annual usage period for cooling divided by the total electric  
power input in watt-hours during the same period.  
COP = Coefficient of Performance - the total heating capacity provided by the refrigeration system, including circulating fan heat but excluding supple-  
mentary resistance (BGU’s per hour) divided by the total electric input (watts) x 3.412.  
TABLE 2: PHYSICAL DATA  
BHP  
MODELS  
024  
030  
036  
042  
048  
INDOOR  
BLOWER  
CENTRIFUGAL BLOWER (Dia. x Wd. in.)  
FAN MOTOR HP (ECM)  
10 X 8  
1/2  
10 X 8  
1/2  
11 x 10  
3/4  
11 x 10  
3/4  
11 X 10  
3/4  
ROWS DEEP  
FINS PER INCH  
FACE AREA (Sq. Ft.)  
2
15  
4.38  
3
13  
4.38  
3
15  
4.38  
3
16  
5.63  
3
16  
5.63  
INDOOR  
COIL  
PROPELLER DIA. (in.)  
FAN MOTOR HP  
NOM. CFM TOTAL  
22  
1/4  
1,800  
22  
1/4  
1,800  
22  
1/4  
2,400  
22  
1/4  
2,400  
22  
1/4  
3,000  
OUTDOOR  
FAN  
ROWS DEEP  
FINS PER INCH  
FACE AREA (Sq. Ft.)  
1
20  
11.7  
1
20  
11.7  
2
20  
11.7  
2
20  
16.4  
2
20  
16.4  
OUTDOOR  
COIL  
CHARGE  
FILTER  
REFRIGERANT 22 (lbs./oz.)  
FACE AREA (Sq. Ft. / Qty. / Size)  
Hermetic Type, Qty. = 1  
5 / 5  
5 / 15  
Scroll  
8 / 4  
4.28 / 2 / 14 x 22  
Scroll  
9 / 14  
Scroll  
12 / 0  
Scroll  
COMPRESSOR  
Reciprocating  
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036-21528-003-A-0703  
TABLE 3: COOLING CAPACITIES - 2 TON (BHP024)  
TEMPERATURE OF AIR ON INDOOR COIL  
800 CFM  
WB °F  
900 CFM  
WB °F  
TEMPERATURE AIR ON  
OUTDOOR COIL  
72  
29.1  
1.93  
19.2  
16.9  
14.5  
12.2  
9.9  
67  
26.0  
1.91  
23.1  
20.8  
18.5  
16.1  
13.8  
11.5  
9.1  
62  
23.8  
1.88  
23.8  
23.8  
21.9  
19.5  
17.2  
14.9  
12.5  
22.1  
2.02  
22.1  
22.1  
20.8  
18.4  
16.1  
13.8  
11.4  
20.5  
2.17  
20.5  
20.5  
19.7  
17.4  
15.1  
12.7  
10.4  
18.9  
2.32  
18.9  
18.9  
18.7  
16.4  
14.1  
11.7  
9.4  
57  
23.4  
1.87  
23.4  
23.4  
22.7  
20.3  
18.0  
15.7  
13.3  
22.0  
2.02  
22.0  
22.0  
21.4  
19.0  
16.7  
14.4  
12.0  
20.6  
2.16  
20.6  
20.6  
20.0  
17.7  
15.3  
13.0  
10.7  
19.2  
2.31  
19.2  
19.2  
18.6  
16.3  
14.0  
11.6  
9.3  
72  
29.7  
1.95  
20.9  
18.3  
15.6  
12.9  
10.3  
#N/A  
#N/A  
27.7  
2.09  
20.1  
17.5  
14.8  
12.2  
9.5  
67  
26.6  
1.93  
25.1  
22.5  
19.8  
17.2  
14.5  
11.9  
9.2  
62  
24.3  
1.91  
24.3  
24.3  
23.4  
20.7  
18.0  
15.4  
12.7  
22.5  
2.05  
22.5  
22.5  
21.8  
19.2  
16.5  
13.8  
11.2  
20.8  
2.20  
20.8  
20.8  
20.4  
17.8  
15.1  
12.4  
9.8  
57  
23.9  
1.90  
23.9  
23.9  
23.6  
20.9  
18.2  
15.6  
12.9  
22.4  
2.04  
22.4  
22.4  
22.1  
19.4  
16.8  
14.1  
11.5  
20.9  
2.19  
20.9  
20.9  
20.6  
18.0  
15.3  
12.6  
10.0  
19.4  
2.35  
19.4  
19.4  
19.1  
16.5  
13.8  
11.2  
8.5  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
85 °F  
#N/A  
#N/A  
27.2  
2.07  
18.6  
16.2  
13.9  
11.6  
9.2  
NET CAP. MBH  
24.2  
2.06  
22.3  
20.0  
17.7  
15.3  
13.0  
10.7  
8.3  
24.6  
2.08  
23.7  
21.5  
18.9  
16.2  
13.5  
10.9  
8.2  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
95 °F  
#N/A  
#N/A  
23.8  
2.20  
19.5  
17.2  
14.9  
12.6  
10.2  
#N/A  
#N/A  
20.4  
2.34  
20.4  
18.2  
15.9  
13.6  
11.2  
#N/A  
#N/A  
17.0  
2.47  
21.3  
19.2  
16.9  
14.6  
12.2  
#N/A  
#N/A  
#N/A  
#N/A  
24.2  
2.24  
20.4  
18.5  
15.9  
13.3  
10.6  
#N/A  
#N/A  
20.6  
2.38  
20.6  
19.5  
17.0  
14.4  
11.7  
#N/A  
#N/A  
17.0  
2.52  
20.8  
20.6  
18.1  
15.4  
12.8  
#N/A  
#N/A  
NET CAP. MBH  
22.4  
2.21  
21.5  
19.2  
16.9  
14.6  
12.2  
9.9  
22.8  
2.24  
22.3  
20.7  
18.1  
15.4  
12.7  
10.1  
7.4  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
105 °F  
7.6  
NET CAP. MBH  
20.7  
2.36  
20.7  
18.5  
16.1  
13.8  
11.5  
9.1  
20.9  
2.40  
20.9  
19.8  
17.3  
14.6  
11.9  
9.3  
19.1  
2.36  
19.1  
19.1  
19.0  
16.4  
13.7  
11.1  
8.4  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
115 °F  
6.8  
6.6  
NET CAP. MBH  
18.9  
2.51  
19.9  
17.7  
15.4  
13.0  
10.7  
8.4  
17.3  
2.46  
17.3  
17.3  
17.7  
15.4  
13.1  
10.7  
8.4  
17.8  
2.45  
17.8  
17.8  
17.3  
15.0  
12.6  
10.3  
8.0  
19.0  
2.56  
19.5  
18.9  
16.5  
13.8  
11.1  
8.5  
17.5  
2.51  
17.5  
17.5  
17.6  
15.0  
12.3  
9.7  
17.9  
2.50  
17.9  
17.9  
17.7  
15.0  
12.3  
9.7  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
125 °F  
6.0  
5.8  
7.0  
7.0  
1.  
These capacities are net capacities - indoor fan heat deducted.  
ALL SENSIBLE CAPACITY  
6
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TABLE 4: COOLING CAPACITIES - 2-1/2 TON (BHP030)  
TEMPERATURE OF AIR ON INDOOR COIL  
1000 CFM  
WB °F  
1125 CFM  
WB °F  
TEMPERATURE AIR ON  
OUTDOOR COIL  
72  
34.1  
2.52  
23.9  
21.0  
18.1  
15.2  
12.3  
#N/A  
#N/A  
32.6  
2.83  
22.8  
19.9  
17.0  
14.1  
11.1  
#N/A  
#N/A  
30.3  
3.14  
21.7  
18.8  
15.9  
13.0  
10.1  
#N/A  
#N/A  
28.0  
3.45  
20.7  
17.7  
14.8  
11.9  
9.0  
67  
31.5  
2.48  
29.8  
26.9  
23.9  
21.0  
18.1  
15.2  
12.3  
29.4  
2.81  
28.2  
25.3  
22.4  
19.5  
16.5  
13.6  
10.7  
27.2  
3.12  
26.6  
24.1  
21.1  
18.2  
15.3  
12.4  
9.5  
62  
57  
72  
35.4  
2.64  
25.7  
22.4  
19.0  
15.7  
12.4  
#N/A  
#N/A  
33.7  
2.93  
25.0  
21.7  
18.3  
15.0  
11.7  
#N/A  
#N/A  
31.5  
3.24  
23.9  
20.6  
17.2  
13.9  
10.6  
#N/A  
#N/A  
29.3  
3.56  
22.8  
19.5  
16.2  
12.8  
9.5  
67  
32.7  
2.58  
31.8  
28.5  
25.2  
21.9  
18.5  
15.2  
11.9  
30.4  
2.91  
29.7  
27.5  
24.2  
20.8  
17.5  
14.2  
10.9  
28.2  
3.22  
27.9  
26.3  
22.9  
19.6  
16.3  
13.0  
9.7  
62  
57  
NET CAP. MBH  
28.4  
2.44  
28.4  
28.4  
27.9  
24.9  
22.0  
19.1  
16.2  
26.8  
2.71  
26.8  
26.8  
26.6  
23.6  
20.7  
17.8  
14.9  
25.0  
3.04  
25.0  
25.0  
25.4  
22.4  
19.5  
16.6  
13.7  
23.2  
3.37  
23.2  
23.2  
24.2  
21.3  
18.3  
15.4  
12.5  
21.4  
3.70  
21.4  
21.4  
23.0  
20.1  
17.1  
14.2  
11.3  
29.9  
2.43  
29.9  
29.9  
29.6  
26.6  
23.7  
20.8  
17.9  
28.9  
2.70  
28.9  
28.9  
28.3  
25.4  
22.5  
19.6  
16.7  
26.7  
3.06  
26.7  
26.7  
26.3  
23.3  
20.4  
17.5  
14.6  
24.4  
3.42  
24.4  
24.4  
24.2  
21.3  
18.4  
15.4  
12.5  
22.2  
3.78  
22.2  
22.2  
22.1  
19.2  
16.3  
13.4  
10.4  
29.5  
2.54  
29.5  
29.5  
29.2  
25.9  
22.6  
19.2  
15.9  
27.7  
2.81  
27.7  
27.7  
27.5  
24.2  
20.9  
17.6  
14.3  
26.0  
3.14  
26.0  
26.0  
26.2  
22.9  
19.6  
16.2  
12.9  
24.4  
3.48  
24.4  
24.4  
24.8  
21.5  
18.2  
14.9  
11.6  
22.7  
3.82  
22.7  
22.7  
23.5  
20.2  
16.8  
13.5  
10.2  
31.0  
2.53  
31.0  
31.0  
30.8  
27.5  
24.2  
20.9  
17.5  
29.8  
2.79  
29.8  
29.8  
29.5  
26.2  
22.9  
19.6  
16.2  
27.7  
3.16  
27.7  
27.7  
27.5  
24.2  
20.9  
17.6  
14.2  
25.6  
3.53  
25.6  
25.6  
25.5  
22.2  
18.9  
15.5  
12.2  
23.5  
3.89  
23.5  
23.5  
23.5  
20.2  
16.8  
13.5  
10.2  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
85 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
95 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
105 °F  
NET CAP. MBH  
24.9  
3.43  
24.9  
22.8  
19.9  
17.0  
14.1  
11.2  
8.3  
26.1  
3.54  
26.1  
25.0  
21.7  
18.4  
15.1  
11.8  
8.4  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
115 °F  
#N/A  
#N/A  
25.6  
3.76  
19.6  
16.7  
13.7  
10.8  
7.9  
#N/A  
#N/A  
27.2  
3.87  
21.7  
18.4  
15.1  
11.7  
8.4  
NET CAP. MBH  
22.7  
3.74  
23.3  
21.6  
18.7  
15.8  
12.9  
10.0  
7.1  
24.0  
3.85  
24.3  
23.8  
20.5  
17.2  
13.9  
10.5  
7.2  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
125 °F  
#N/A  
#N/A  
#N/A  
#N/A  
1.  
These capacities are net capacities - indoor fan heat deducted.  
ALL SENSIBLE CAPACITY  
Unitary Products Group  
7
   
036-21528-003-A-0703  
TABLE 5: COOLING CAPACITIES - 3 TON (BHP036)  
TEMPERATURE OF AIR ON INDOOR COIL  
1050 CFM 1200 CFM  
WB °F WB °F  
TEMPERATURE AIR ON  
OUTDOOR COIL  
72  
41.1  
2.89  
25.6  
22.5  
19.5  
16.5  
13.4  
#N/A  
#N/A  
38.5  
3.21  
25.0  
22.0  
19.0  
15.9  
12.9  
#N/A  
#N/A  
35.6  
3.61  
23.9  
20.9  
17.9  
14.8  
11.8  
#N/A  
#N/A  
32.6  
4.01  
22.8  
19.8  
16.8  
13.7  
10.7  
#N/A  
#N/A  
29.7  
4.41  
21.7  
18.7  
15.7  
12.6  
9.6  
67  
62  
57  
72  
42.4  
3.00  
28.2  
24.7  
21.2  
17.7  
14.2  
#N/A  
#N/A  
39.4  
3.31  
27.5  
24.0  
20.5  
17.0  
13.5  
#N/A  
#N/A  
36.4  
3.70  
26.2  
22.7  
19.2  
15.7  
12.2  
#N/A  
#N/A  
33.3  
4.10  
25.0  
21.5  
18.0  
14.5  
11.0  
#N/A  
#N/A  
30.2  
4.49  
23.7  
20.2  
16.7  
13.2  
9.7  
67  
38.6  
2.91  
35.5  
32.0  
28.5  
25.0  
21.6  
18.1  
14.6  
35.8  
3.25  
33.9  
30.4  
26.9  
23.4  
19.9  
16.4  
12.9  
32.8  
3.61  
31.9  
28.9  
25.4  
21.9  
18.4  
14.9  
11.4  
29.9  
3.97  
29.9  
27.4  
23.9  
20.4  
16.9  
13.4  
9.9  
62  
57  
NET CAP. MBH  
37.5  
2.81  
32.3  
29.3  
26.3  
23.2  
20.2  
17.2  
14.1  
34.9  
3.15  
30.9  
27.9  
24.8  
21.8  
18.8  
15.7  
12.7  
32.1  
3.52  
29.4  
26.6  
23.6  
20.5  
17.5  
14.5  
11.4  
29.3  
3.88  
27.8  
25.3  
22.3  
19.2  
16.2  
13.2  
10.1  
26.4  
4.25  
26.3  
24.0  
21.0  
17.9  
14.9  
11.9  
8.8  
34.5  
2.73  
34.5  
33.5  
31.7  
28.7  
25.7  
22.6  
19.6  
32.5  
3.05  
32.5  
31.9  
30.5  
27.5  
24.4  
21.4  
18.4  
29.5  
3.44  
29.5  
29.2  
27.8  
24.8  
21.8  
18.7  
15.7  
26.5  
3.83  
26.5  
26.5  
25.2  
22.2  
19.1  
16.1  
13.1  
23.5  
4.21  
23.5  
23.8  
22.6  
19.5  
16.5  
13.5  
10.4  
34.3  
2.73  
34.3  
33.6  
32.2  
29.1  
26.1  
23.1  
20.0  
32.6  
3.06  
32.6  
32.0  
30.6  
27.5  
24.5  
21.5  
18.5  
30.4  
3.45  
30.4  
30.0  
28.6  
25.5  
22.5  
19.5  
16.4  
28.2  
3.84  
28.2  
28.0  
26.5  
23.5  
20.5  
17.4  
14.4  
26.0  
4.22  
26.0  
25.9  
24.5  
21.5  
18.4  
15.4  
12.4  
35.5  
2.83  
35.5  
35.5  
34.5  
31.0  
27.5  
24.0  
20.5  
33.3  
3.15  
33.3  
33.3  
33.0  
29.5  
26.0  
22.5  
19.0  
30.2  
3.53  
30.2  
30.2  
30.0  
26.5  
23.0  
19.5  
16.0  
27.0  
3.91  
27.0  
27.0  
27.0  
23.5  
20.0  
16.5  
13.0  
23.9  
4.29  
23.9  
23.9  
24.1  
20.6  
17.1  
13.6  
10.1  
35.3  
2.82  
35.3  
35.3  
35.0  
31.5  
28.0  
24.5  
21.0  
33.4  
3.16  
33.4  
33.4  
33.1  
29.6  
26.1  
22.6  
19.1  
31.1  
3.54  
31.1  
31.1  
30.8  
27.3  
23.8  
20.3  
16.8  
28.8  
3.92  
28.8  
28.8  
28.5  
25.0  
21.5  
18.0  
14.5  
26.4  
4.30  
26.4  
26.4  
26.2  
22.7  
19.2  
15.7  
12.2  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
85 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
95 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
105 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
115 °F  
NET CAP. MBH  
26.9  
4.33  
27.9  
25.9  
22.4  
18.9  
15.4  
11.9  
8.4  
POWER INPUT kW  
86  
83  
125 °F  
80  
77  
74  
71  
#N/A  
#N/A  
#N/A  
#N/A  
#78  
1.  
These capacities are net capacities - indoor fan heat deducted.  
ALL SENSIBLE CAPACITY  
8
Unitary Products Group  
   
036-21528-003-A-0703  
TABLE 6: COOLING CAPACITIES - 3-1/2 TON (BHP042)  
TEMPERATURE OF AIR ON INDOOR COIL  
1300 CFM  
WB °F  
1400 CFM  
WB °F  
TEMPERATURE AIR ON  
OUTDOOR COIL  
72  
48.8  
3.37  
31.6  
27.8  
24.0  
20.2  
16.4  
#N/A  
#N/A  
45.4  
3.67  
30.7  
26.9  
23.0  
19.2  
15.4  
#N/A  
#N/A  
41.9  
4.01  
28.1  
24.5  
21.0  
17.4  
13.9  
#N/A  
#N/A  
38.7  
4.41  
26.8  
23.3  
19.7  
16.2  
12.6  
#N/A  
#N/A  
35.6  
4.81  
25.5  
22.0  
18.5  
14.9  
11.4  
#N/A  
#N/A  
67  
62  
57  
72  
49.2  
3.43  
33.0  
28.9  
24.8  
20.7  
16.7  
#N/A  
#N/A  
45.7  
3.72  
32.0  
27.9  
23.9  
19.8  
15.7  
#N/A  
#N/A  
42.1  
4.06  
29.4  
25.6  
21.8  
18.0  
14.1  
#N/A  
#N/A  
38.8  
4.46  
28.1  
24.3  
20.5  
16.7  
12.9  
#N/A  
#N/A  
35.5  
4.85  
26.8  
23.0  
19.2  
15.4  
11.6  
#N/A  
#N/A  
67  
44.9  
3.38  
41.0  
36.9  
32.8  
28.8  
24.7  
20.6  
16.5  
41.9  
3.71  
39.8  
35.7  
31.6  
27.6  
23.5  
19.4  
15.3  
37.9  
4.03  
35.8  
33.0  
29.1  
25.3  
21.5  
17.7  
13.9  
34.3  
4.40  
33.4  
31.5  
27.7  
23.9  
20.1  
16.3  
12.5  
30.6  
4.77  
31.0  
30.1  
26.3  
22.5  
18.6  
14.8  
11.0  
62  
57  
NET CAP. MBH  
44.5  
3.32  
39.4  
35.6  
31.8  
27.9  
24.1  
20.3  
16.5  
41.5  
3.66  
38.2  
34.4  
30.6  
26.8  
23.0  
19.1  
15.3  
37.7  
3.98  
34.5  
31.6  
28.1  
24.6  
21.0  
17.5  
13.9  
34.2  
4.35  
32.5  
30.2  
26.7  
23.1  
19.6  
16.1  
12.5  
30.7  
4.73  
30.4  
28.8  
25.3  
21.7  
18.2  
14.6  
11.1  
40.5  
3.21  
40.5  
40.1  
38.8  
35.0  
31.2  
27.4  
23.5  
38.3  
3.54  
38.3  
38.1  
37.5  
33.6  
29.8  
26.0  
22.2  
35.2  
3.89  
35.2  
34.8  
33.7  
30.1  
26.6  
23.0  
19.5  
32.4  
4.28  
32.4  
32.1  
31.2  
27.6  
24.1  
20.6  
17.0  
29.6  
4.68  
29.6  
29.4  
28.7  
25.1  
21.6  
18.1  
14.5  
40.6  
3.20  
40.6  
40.5  
40.2  
36.4  
32.6  
28.7  
24.9  
38.5  
3.54  
38.5  
38.3  
37.9  
34.0  
30.2  
26.4  
22.6  
35.6  
3.88  
35.6  
35.1  
33.8  
30.3  
26.7  
23.2  
19.6  
32.9  
4.28  
32.9  
32.3  
31.0  
27.5  
24.0  
20.4  
16.9  
30.3  
4.67  
30.3  
29.6  
28.3  
24.8  
21.2  
17.7  
14.1  
40.8  
3.27  
40.8  
40.8  
40.1  
36.0  
31.9  
27.9  
23.8  
38.6  
3.60  
38.6  
38.6  
38.8  
34.7  
30.6  
26.5  
22.4  
35.4  
3.94  
35.4  
35.2  
34.9  
31.1  
27.3  
23.5  
19.7  
32.5  
4.33  
32.5  
32.3  
32.4  
28.6  
24.8  
20.9  
17.1  
29.6  
4.72  
29.6  
29.5  
29.8  
26.0  
22.2  
18.4  
14.6  
41.0  
3.26  
41.0  
41.0  
41.5  
37.4  
33.4  
29.3  
25.2  
38.8  
3.60  
38.8  
38.8  
39.2  
35.1  
31.0  
26.9  
22.8  
35.7  
3.93  
35.7  
35.5  
35.1  
31.2  
27.4  
23.6  
19.8  
33.0  
4.32  
33.0  
32.7  
32.2  
28.4  
24.6  
20.8  
17.0  
30.2  
4.71  
30.2  
29.9  
29.4  
25.6  
21.8  
18.0  
14.2  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
85 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
95 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
105 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
115 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
125 °F  
1.  
These capacities are net capacities - indoor fan heat deducted.  
ALL SENSIBLE CAPACITY  
Unitary Products Group  
9
   
036-21528-003-A-0703  
TABLE 7: COOLING CAPACITIES - 4 TON (BHP048)  
TEMPERATURE OF AIR ON INDOOR COIL  
1500 CFM 1600 CFM  
WB °F WB °F  
TEMPERATURE AIR ON  
OUTDOOR COIL  
72  
54.3  
3.97  
35.5  
31.2  
26.8  
22.5  
18.1  
#N/A  
#N/A  
52.0  
4.33  
34.6  
30.3  
25.9  
21.5  
17.2  
#N/A  
#N/A  
48.8  
4.71  
32.0  
28.0  
23.9  
19.9  
15.9  
#N/A  
#N/A  
45.9  
5.19  
31.0  
26.9  
22.9  
18.8  
14.8  
#N/A  
#N/A  
43.1  
5.66  
29.9  
25.9  
21.8  
17.8  
13.7  
#N/A  
#N/A  
67  
62  
57  
72  
54.9  
4.06  
37.2  
32.5  
27.8  
23.2  
18.5  
#N/A  
#N/A  
52.3  
4.43  
36.1  
31.5  
26.8  
22.1  
17.5  
#N/A  
#N/A  
49.0  
4.81  
33.5  
29.2  
24.8  
20.5  
16.1  
#N/A  
#N/A  
46.1  
5.28  
32.5  
28.1  
23.8  
19.4  
15.0  
#N/A  
#N/A  
43.2  
5.76  
31.4  
27.0  
22.7  
18.3  
14.0  
#N/A  
#N/A  
67  
51.0  
3.94  
47.1  
42.4  
37.8  
33.1  
28.4  
23.8  
19.1  
47.7  
4.35  
45.3  
40.6  
36.0  
31.3  
26.6  
22.0  
17.3  
44.5  
4.71  
41.8  
38.0  
33.6  
29.3  
24.9  
20.6  
16.2  
41.5  
5.17  
40.2  
36.8  
32.5  
28.1  
23.8  
19.4  
15.0  
38.6  
5.63  
38.6  
35.7  
31.3  
27.0  
22.6  
18.3  
13.9  
62  
57  
NET CAP. MBH  
50.4  
3.85  
45.1  
40.8  
36.4  
32.0  
27.7  
23.3  
19.0  
47.4  
4.25  
43.5  
39.1  
34.8  
30.4  
26.1  
21.7  
17.3  
44.2  
4.62  
40.2  
36.5  
32.4  
28.4  
24.3  
20.3  
16.2  
41.4  
5.08  
38.7  
35.3  
31.3  
27.2  
23.2  
19.1  
15.1  
38.5  
5.53  
37.3  
34.2  
30.1  
26.1  
22.0  
18.0  
14.0  
45.7  
3.75  
45.7  
45.3  
43.7  
39.3  
35.0  
30.6  
26.3  
43.5  
4.17  
43.5  
43.1  
42.1  
37.8  
33.4  
29.1  
24.7  
40.1  
4.52  
40.1  
39.7  
39.6  
35.5  
31.5  
27.4  
23.4  
37.0  
4.96  
37.0  
37.0  
38.4  
34.4  
30.4  
26.3  
22.3  
33.9  
5.40  
33.9  
34.2  
37.3  
33.3  
29.3  
25.2  
21.2  
48.2  
3.74  
48.2  
47.5  
45.2  
40.9  
36.5  
32.2  
27.8  
46.1  
4.11  
46.1  
45.4  
43.2  
38.8  
34.5  
30.1  
25.8  
43.2  
4.47  
43.2  
41.8  
39.3  
35.3  
31.2  
27.2  
23.1  
40.7  
4.93  
40.7  
39.3  
36.9  
32.9  
28.8  
24.8  
20.7  
38.1  
5.39  
38.1  
36.8  
34.5  
30.5  
26.4  
22.4  
18.4  
46.3  
3.83  
46.3  
46.3  
45.3  
40.6  
36.0  
31.3  
26.6  
43.8  
4.26  
43.8  
43.8  
43.6  
38.9  
34.3  
29.6  
24.9  
40.3  
4.61  
40.3  
40.1  
41.0  
36.7  
32.3  
28.0  
23.6  
37.1  
5.05  
37.1  
37.1  
39.9  
35.6  
31.2  
26.8  
22.5  
34.0  
5.50  
34.0  
34.1  
38.8  
34.5  
30.1  
25.7  
21.4  
48.8  
3.83  
48.8  
48.8  
46.9  
42.3  
37.6  
32.9  
28.3  
46.4  
4.20  
46.4  
46.4  
44.7  
40.0  
35.3  
30.7  
26.0  
43.5  
4.56  
43.5  
42.7  
40.8  
36.4  
32.0  
27.7  
23.3  
40.8  
5.02  
40.8  
40.1  
38.3  
34.0  
29.6  
25.3  
20.9  
38.2  
5.48  
38.2  
37.5  
35.9  
31.5  
27.2  
22.8  
18.5  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
85 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
95 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
105 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
115 °F  
NET CAP. MBH  
POWER INPUT kW  
86  
83  
80  
77  
74  
71  
68  
125 °F  
1.  
These capacities are net capacities - indoor fan heat deducted.  
ALL SENSIBLE CAPACITY  
10  
Unitary Products Group  
   
036-21528-003-A-0703  
TABLE 8: HEATING CAPACITIES - 2 TON (BHP024)  
OUTDOOR AIR TEMPERATURE, °F (72% RH)  
CAP1  
& KW  
RETURN  
AIR °F  
CFM  
-10  
0
10  
20  
30  
40  
50  
60  
MBH  
KW  
10.216  
1.214  
7.317  
1.363  
7.205  
1.423  
10.206  
1.227  
7.307  
1.376  
7.195  
1.436  
11.377  
1.339  
8.478  
1.488  
8.366  
1.548  
11.748  
1.307  
8.849  
1.456  
8.737  
1.516  
11.738  
1.320  
8.839  
1.469  
8.727  
1.529  
12.909  
1.432  
10.010  
1.581  
9.898  
1.641  
13.601  
1.401  
10.702  
1.550  
10.590  
1.610  
13.591  
1.414  
10.692  
1.563  
10.580  
1.623  
14.762  
1.526  
11.863  
1.675  
11.751  
1.735  
15.843  
1.494  
12.944  
1.643  
12.832  
1.703  
15.833  
1.507  
12.934  
1.656  
12.822  
1.716  
17.004  
1.619  
14.105  
1.768  
13.993  
1.828  
18.554  
1.588  
15.655  
1.737  
15.543  
1.797  
18.544  
1.601  
15.645  
1.750  
15.533  
1.810  
19.715  
1.713  
16.816  
1.862  
16.704  
1.922  
21.834  
1.681  
18.935  
1.830  
18.823  
1.890  
21.824  
1.694  
18.925  
1.843  
18.813  
1.903  
22.995  
1.806  
20.096  
1.955  
19.984  
2.015  
25.801  
1.775  
22.902  
1.924  
22.790  
1.984  
25.791  
1.788  
22.892  
1.937  
22.780  
1.997  
26.962  
1.900  
24.063  
2.049  
23.951  
2.109  
30.601  
1.868  
55  
MBH  
KW  
27.702  
2.017  
600  
70  
80  
55  
70  
80  
55  
70  
80  
MBH  
KW  
27.590  
2.077  
MBH  
KW  
30.591  
1.881  
MBH  
KW  
27.692  
2.030  
800  
MBH  
KW  
27.580  
2.090  
MBH  
KW  
31.762  
1.993  
MBH  
KW  
28.863  
2.142  
1000  
MBH  
KW  
28.751  
2.202  
1.  
These capacities are net capacities - the indoor motor heat has been added. These power inputs are total power inputs - the indoor motor watts have  
been added.  
TABLE 9: HEATING CAPACITIES - 2-1/2 TON (BHP030)  
OUTDOOR AIR TEMPERATURE, °F (72% RH)  
CAP1  
& KW  
RETURN  
AIR °F  
CFM  
-10  
0
10  
20  
30  
40  
50  
60  
MBH  
KW  
10.876  
1.847  
10.046  
2.135  
9.054  
2.377  
11.886  
1.731  
11.056  
2.019  
10.064  
2.261  
13.978  
1.881  
13.148  
2.169  
12.156  
2.411  
12.808  
1.917  
11.978  
2.205  
10.986  
2.447  
13.818  
1.801  
12.988  
2.089  
11.996  
2.331  
15.910  
1.951  
15.080  
2.239  
14.088  
2.481  
15.078  
1.987  
14.248  
2.275  
13.256  
2.517  
16.088  
1.871  
15.258  
2.159  
14.266  
2.401  
18.180  
2.021  
17.350  
2.309  
16.358  
2.551  
17.744  
2.057  
16.914  
2.345  
15.922  
2.587  
18.754  
1.941  
17.924  
2.229  
16.932  
2.471  
20.846  
2.091  
20.016  
2.379  
19.024  
2.621  
20.877  
2.127  
20.047  
2.415  
19.055  
2.657  
21.887  
2.011  
24.556  
2.198  
23.726  
2.486  
22.734  
2.728  
25.566  
2.082  
24.736  
2.370  
23.744  
2.612  
27.658  
2.232  
26.828  
2.520  
25.836  
2.762  
28.879  
2.268  
28.049  
2.556  
27.057  
2.798  
29.889  
2.152  
29.059  
2.440  
28.067  
2.682  
31.981  
2.302  
31.151  
2.590  
30.159  
2.832  
33.958  
2.338  
33.128  
2.626  
32.136  
2.868  
34.968  
2.222  
34.138  
2.510  
33.146  
2.752  
37.060  
2.372  
36.230  
2.660  
35.238  
2.902  
55  
70  
80  
55  
70  
80  
55  
70  
80  
MBH  
KW  
750  
MBH  
KW  
MBH  
KW  
MBH  
KW  
21.057  
2.299  
20.065  
2.541  
23.979  
2.161  
23.149  
2.449  
22.157  
2.691  
1000  
MBH  
KW  
MBH  
KW  
MBH  
KW  
1250  
MBH  
KW  
1.  
These capacities are net capacities - the indoor motor heat has been added. These power inputs are total power inputs - the indoor motor watts have  
been added.  
Unitary Products Group  
11  
   
036-21528-003-A-0703  
TABLE 10: HEATING CAPACITIES - 3 TON (BHP036)  
OUTDOOR AIR TEMPERATURE, °F (72% RH)  
CAP1  
& KW  
RETURN  
AIR °F  
CFM  
-10  
0
10  
20  
30  
40  
50  
60  
MBH  
KW  
10.597  
1.791  
9.420  
2.198  
7.543  
2.476  
11.652  
1.825  
10.475  
2.232  
8.598  
2.510  
12.282  
1.779  
11.105  
2.186  
9.228  
2.464  
12.792  
1.898  
11.615  
2.305  
9.738  
2.583  
13.847  
1.932  
12.670  
2.339  
10.793  
2.617  
14.477  
1.886  
13.300  
2.293  
11.423  
2.571  
15.448  
2.005  
14.271  
2.412  
12.394  
2.690  
16.503  
2.039  
15.326  
2.446  
13.449  
2.724  
17.133  
1.993  
15.956  
2.400  
14.079  
2.678  
18.660  
2.112  
22.545  
2.219  
21.368  
2.626  
19.491  
2.904  
23.600  
2.253  
22.423  
2.660  
20.546  
2.938  
24.230  
2.207  
23.053  
2.614  
21.176  
2.892  
27.244  
2.326  
26.067  
2.733  
24.190  
3.011  
32.929  
2.433  
31.752  
2.840  
29.875  
3.118  
39.804  
2.540  
38.627  
2.947  
36.750  
3.225  
40.859  
2.574  
39.682  
2.981  
37.805  
3.259  
41.489  
2.528  
40.312  
2.935  
38.435  
3.213  
55  
70  
80  
55  
70  
80  
55  
70  
80  
MBH  
KW  
17.483  
2.519  
15.606  
2.797  
19.715  
2.146  
18.538  
2.553  
16.661  
2.831  
20.345  
2.100  
19.168  
2.507  
17.291  
2.785  
900  
MBH  
KW  
MBH  
KW  
28.299  
2.360  
27.122  
2.767  
25.245  
3.045  
28.929  
2.314  
27.752  
2.721  
25.875  
2.999  
33.984  
2.467  
32.807  
2.874  
30.930  
3.152  
34.614  
2.421  
33.437  
2.828  
31.560  
3.106  
MBH  
KW  
1200  
MBH  
KW  
MBH  
KW  
MBH  
KW  
1500  
MBH  
KW  
1.  
These capacities are net capacities - the indoor motor heat has been added. These power inputs are total power inputs - the indoor motor watts have  
been added.  
TABLE 11: HEATING CAPACITIES - 3-1/2 TON (BHP042)  
OUTDOOR AIR TEMPERATURE, °F (72% RH)  
CAP1  
& KW  
RETURN  
AIR °F  
CFM  
-10  
0
10  
20  
30  
40  
50  
60  
MBH  
KW  
15.404  
2.410  
14.342  
2.835  
13.669  
3.143  
17.901  
2.419  
16.839  
2.844  
16.166  
3.152  
18.901  
2.463  
17.839  
2.888  
17.166  
3.196  
17.988  
2.505  
16.926  
2.930  
16.253  
3.238  
20.485  
2.514  
19.423  
2.939  
18.750  
3.247  
21.485  
2.558  
20.423  
2.983  
19.750  
3.291  
20.968  
2.599  
19.906  
3.024  
19.233  
3.332  
23.465  
2.608  
22.403  
3.033  
21.730  
3.341  
24.465  
2.652  
23.403  
3.077  
22.730  
3.385  
24.404  
2.694  
23.342  
3.119  
28.369  
2.789  
27.307  
3.214  
26.634  
3.522  
30.866  
2.798  
29.804  
3.223  
29.131  
3.531  
31.866  
2.842  
30.804  
3.267  
30.131  
3.575  
32.941  
2.883  
31.879  
3.308  
31.206  
3.616  
35.438  
2.892  
34.376  
3.317  
33.703  
3.625  
36.438  
2.936  
35.376  
3.361  
34.703  
3.669  
38.215  
2.978  
37.153  
3.403  
36.480  
3.711  
44.298  
3.073  
43.236  
3.498  
42.563  
3.806  
46.795  
3.082  
45.733  
3.507  
45.060  
3.815  
47.795  
3.126  
46.733  
3.551  
46.060  
3.859  
55  
70  
80  
55  
70  
80  
55  
70  
80  
MBH  
KW  
1050  
MBH  
KW  
22.669  
3.427  
26.901  
2.703  
25.839  
3.128  
25.166  
3.436  
27.901  
2.747  
26.839  
3.172  
26.166  
3.480  
MBH  
KW  
40.712  
2.987  
39.650  
3.412  
38.977  
3.720  
41.712  
3.031  
40.650  
3.456  
39.977  
3.764  
MBH  
KW  
1400  
MBH  
KW  
MBH  
KW  
MBH  
KW  
1750  
MBH  
KW  
1.  
These capacities are net capacities - the indoor motor heat has been added. These power inputs are total power inputs - the indoor motor watts have  
been added.  
12  
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036-21528-003-A-0703  
TABLE 12: HEATING CAPACITIES - 4 TON (BHP048)  
OUTDOOR AIR TEMPERATURE, °F (72% RH)  
CAP1  
& KW  
RETURN  
AIR °F  
CFM  
-10  
0
10  
20  
30  
40  
50  
60  
MBH  
KW  
13.911  
2.342  
11.264  
2.726  
9.676  
3.067  
16.349  
2.408  
13.702  
2.792  
12.114  
3.133  
17.629  
2.502  
14.982  
2.886  
13.394  
3.227  
17.096  
2.568  
14.449  
2.952  
12.861  
3.293  
19.534  
2.634  
16.887  
3.018  
15.299  
3.359  
20.814  
2.728  
18.167  
3.112  
21.021  
2.795  
18.374  
3.179  
16.786  
3.520  
23.459  
2.861  
20.812  
3.245  
19.224  
3.586  
24.739  
2.955  
22.092  
3.339  
20.504  
3.680  
25.859  
3.022  
23.212  
3.406  
21.624  
3.747  
28.297  
3.088  
25.650  
3.472  
24.062  
3.813  
29.577  
3.182  
26.930  
3.566  
25.342  
3.907  
31.821  
3.249  
29.174  
3.633  
27.586  
3.974  
34.259  
3.315  
31.612  
3.699  
30.024  
4.040  
35.539  
3.409  
32.892  
3.793  
31.304  
4.134  
39.170  
3.476  
36.523  
3.860  
34.935  
4.201  
41.608  
3.542  
38.961  
3.926  
37.373  
4.267  
42.888  
3.636  
40.241  
4.020  
38.653  
4.361  
48.226  
3.703  
45.579  
4.087  
43.991  
4.428  
50.664  
3.769  
48.017  
4.153  
46.429  
4.494  
51.944  
3.863  
49.297  
4.247  
47.709  
4.588  
59.388  
3.930  
56.741  
4.314  
55.153  
4.655  
61.826  
3.996  
59.179  
4.380  
57.591  
4.721  
63.106  
4.090  
60.459  
4.474  
58.871  
4.815  
55  
70  
80  
55  
70  
80  
55  
70  
80  
MBH  
KW  
1200  
MBH  
KW  
MBH  
KW  
MBH  
KW  
1600  
MBH  
KW  
MBH  
KW  
MBH  
KW  
2000  
MBH  
KW  
16.579  
3.453  
1.  
These capacities are net capacities - the indoor motor heat has been added. These power inputs are total power inputs - the indoor motor watts have  
been added.  
Unitary Products Group  
13  
 
036-21528-003-A-0703  
1
TABLE 13: SIDE & BOTTOM SUPPLY AIR BLOWER PERFORMANCE (208/230/460 VOLT )  
EXTERNAL STATIC PRESSURE - IWG  
MODEL NO.  
BHP  
MOTOR SPEED  
SETTING  
UNIT  
AIRFLOW  
0.15  
0.30  
0.50  
WATTS  
161  
0.70  
0.90  
B1HP024  
B1HP024  
B1HP030  
B1HP030  
B1HP036  
B1HP036  
B1HP042  
B1HP042  
B1HP042  
B1HP042  
B1HP048  
B1HP048  
B1HP048  
Cooling TB2-A, Heating TB2-A, Electric Heat  
Cooling TB2-B, Heating TB2-B  
Cooling TB2-A, Heating TB2-A, Electric Heat  
Cooling TB2-B, Heating TB2-B  
Cooling TB2-A, Heating TB2-A  
Cooling TB2-B, Heating TB2-B, Electric Heat  
Electric Heat  
800 CFM  
900 CFM  
91  
125  
148  
321  
413  
261  
324  
341  
395  
466  
554  
427  
516  
608  
206  
243  
449  
557  
372  
480  
494  
551  
642  
752  
597  
703  
800  
240  
285  
500  
620  
438  
541  
577  
640  
734  
835  
683  
788  
873  
118  
280  
356  
209  
273  
306  
338  
393  
500  
377  
455  
530  
199  
1000 CFM  
1125 CFM  
1050 CFM  
1200 CFM  
1225 CFM  
1300 CFM  
1400 CFM  
1500 CFM  
1400 CFM  
1500 CFM  
1600 CFM  
389  
490  
319  
392  
412  
Cooling TB2-A  
470  
Cooling TB2-B  
544  
Heating TB2-A, TB2-B  
665  
Heating TB2-A  
504  
Cooling TB2-A  
601  
Cooling TB2-B, Heating TB2-B, Electric Heat  
707  
1.  
All units are factory set to TB2-A.  
NOTE: Above data includes allowances for a dry indoor coil and no filters. For additional pressure drops, refer to the “Additional Static Pressure  
Resistance” table.  
TABLE 14: ADDITIONAL STATIC RESISTANCE  
RESISTANCE, IWG  
DESCRIPTION  
CFM  
1,300  
0.04  
0.03  
0.03  
0.07  
500  
0.01  
0.00  
0.01  
0.02  
600  
0.01  
0.00  
0.02  
0.03  
700  
800  
900  
0.01  
0.01  
0.02  
0.04  
1,000  
0.02  
0.01  
0.02  
0.04  
1,100  
0.03  
0.01  
0.03  
0.05  
1,200  
0.04  
0.02  
0.03  
0.06  
1,400  
0.03  
0.04  
0.03  
0.08  
1,500  
0.04  
0.05  
0.04  
0.09  
1,600  
0.04  
0.06  
0.05  
0.10  
1,700  
0.05  
0.07  
0.05  
0.01  
1,800  
0.05  
0.07  
0.06  
0.11  
1,900  
0.06  
0.08  
0.06  
0.11  
2,000  
0.07  
0.08  
0.07  
0.12  
Wet Indoor Coil  
Economizer  
0.01 0.02  
0.00 0.01  
0.02 0.02  
0.03 0.03  
Filter/Frame Kit  
Electric Heat  
14  
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036-21528-003-A-0703  
THERMOSTAT  
UNIT TERMINAL STRIP  
NOTE:  
** = Minimum wire size of 18 AWG  
wire should be used for all field  
installed 24 volt wire.  
**  
*
R
G
Y
R
HEAT ANTICIPATOR  
SHOULD BE SET AT 0.25  
AMPS FOR ALL MODELS  
G
Y
W
W2  
W1  
O
24 VOLT TRANSFORMER  
PROGRAMMABLE  
THERMOSTAT ONLY  
O
C
* = Only required on units with  
supplemental electric heat.  
C
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can  
cause improper and dangerous operation. Verify proper operation after servicing.  
FIGURE 2 - FIELD WIRING DIAGRAM  
Unitary Products Group  
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TABLE 15: ELECTRICAL DATA (BASIC UNIT)  
VOLTAGE  
MAX.  
HACR  
BREAKER  
SIZE,  
MAX  
FUSE  
SIZE,  
AMPS2  
OUTDOOR  
SUPPLY AIR  
BLOWER  
MOTOR,  
FLA  
COMPRESSOR  
LIMITATIONS1  
MINIMUM  
CIRCUIT  
AMPACITY  
UNIT  
MODEL  
BHP  
POWER  
SUPPLY  
FAN  
MOTOR,  
FLA  
TRANSFORMER  
POWER  
SIZE (VA)  
FACTOR  
MIN.  
MAX.  
RLA  
LRA  
AMPS  
024  
030  
208/230-1-60  
208/230-1-60  
208/230-3-60  
460-3-60  
187  
187  
187  
414  
187  
187  
414  
187  
187  
414  
187  
187  
414  
253  
253  
253  
504  
253  
253  
504  
253  
253  
504  
253  
253  
504  
9.3  
15.0  
10.0  
5.0  
57.0  
72.5  
63.0  
31.0  
94.0  
78.0  
40.0  
104.0  
88.0  
44.0  
126.0  
93.0  
46.5  
1.1  
1.1  
1.1  
0.6  
1.1  
1.1  
0.6  
1.1  
1.1  
0.6  
1.5  
1.5  
0.8  
5.0  
5.0  
5.0  
5.0  
7.3  
7.3  
7.3  
7.3  
7.3  
7.3  
7.3  
7.3  
7.3  
17.7  
24.9  
18.6  
11.9  
29.9  
22.7  
15.4  
33.4  
25.8  
16.1  
38.1  
25.1  
16.3  
25  
35  
25  
15  
45  
30  
20  
50  
35  
20  
60  
35  
20  
25  
35  
25  
15  
45  
30  
20  
50  
35  
20  
60  
35  
20  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
0.96  
40  
40  
75  
75  
40  
75  
75  
40  
75  
75  
40  
75  
75  
208/230-1-60  
208/230-3-60  
460-3-60  
17.2  
11.4  
5.7  
036  
042  
048  
208/230-1-60  
208/230-3-60  
460-3-60  
20.0  
13.9  
6.4  
208/230-1-60  
208/230-3-60  
460-3-60  
23.4  
13.0  
6.4  
1.  
2.  
Rated in accordance with ARI Standard 100, utilization range “A”.  
Dual element, time delay type.  
NOMINAL VOLTAGE VOLTAGE KW CAP. MULTIPLIER  
ELECTRIC HEAT  
CORRECTION  
FACTORS  
208  
230  
0.75  
0.92  
240  
480  
460  
0.92  
16  
Unitary Products Group  
 
036-21528-003-A-0703  
TABLE 16: ELECTRICAL DATA (13 SEER HEAT PUMP / ELECTRIC HEAT)  
COMPRESSOR  
SUPPLY  
AIR  
BLOWER  
MOTOR  
FLA  
ELECTRIC HEAT ACCESSORY  
MAX.  
FUSE/  
SIZE,1 BREAKER  
AMPS  
MAX  
HACR2  
COND  
FAN  
MOTOR  
FLA  
MINIMUM  
CIRCUIT  
AMPACITY  
POWER  
SUPPLY  
TOTAL  
AMPS  
RLA  
9.3  
LRA  
57.0  
72.5  
MODEL NO.  
KW  
SIZE  
2NH04500506  
2NH04500706  
2NH04501006  
2NH04500506  
2NH04500706  
2NH04501006  
3.8 / 5.0 *  
5.6 / 7.5 *  
7.5 / 10.0 *  
3.8 / 5.0 *  
5.6 / 7.5 *  
7.5 / 10.0 *  
18.1 / 20.8  
27.1 / 31.3  
36.1 / 41.7  
18.1 / 20.8  
27.3 / 31.3  
36.1 / 41.7  
40.3 / 43.8  
51.6 / 56.8  
62.9 / 69.8  
47.4 / 50.9  
58.7 / 63.9  
70.0 / 76.9  
92.6 / 103.0  
52.5 / 55.9  
63.8 / 69.0  
75.0 / 82.0  
97.6 / 108.0  
78.5 / 85.5  
101.1 / 111.5  
83.2 / 90.1  
105.8 / 116.2  
128.3 / 142.2  
45 / 45  
60 / 60  
70 / 70  
50 / 60  
60 / 70  
70 / 80  
100 / 110  
60 / 60  
70 / 70  
80 / 90  
100 / 110  
80 / 90  
110 / 125  
90 / 100  
110 / 125  
150 / 150  
175 / 175  
45 / 50  
60 / 70  
50 / 60  
70 / 70  
60 / 60  
70 / 80  
60 / 60  
70 / 80  
80 / 90  
100 / 110  
30  
45 / 45  
60 / 60  
70 / 70  
50 / 60  
60 / 70  
70 / 80  
100 / 110  
60 / 60  
70 / 70  
80 / 90  
100 / 110  
80 / 90  
110 / 125  
90 / 100  
110 / 125  
150 / 150  
175 / 175  
45 / 50  
60 / 70  
50 / 60  
70 / 70  
60 / 60  
70 / 80  
60 / 60  
70 / 80  
80 / 90  
100 / 110  
30  
024  
030  
208/230-1-60  
208/230-1-60  
1.1  
1.1  
5.0  
15.0  
5.0  
2NH04501506 11.3 / 15.0 * 54.2 / 62.5  
2NH04500506  
2NH04500706  
2NH04501006  
3.8 / 5.0 *  
5.6 / 7.5 *  
7.5 / 10.0 *  
18.1 / 20.8  
27.1 / 31.3  
36.1 / 41.7  
036  
042  
048  
208/230-1-60  
208/230-1-60  
208/230-1-60  
17.2  
20.0  
23.4  
94.0  
104.0  
126.0  
1.1  
1.1  
1.5  
7.3  
7.3  
7.3  
2NH04501506 11.3 / 15.0 * 54.2 / 62.5  
2NP04501006 7.5 / 10.0 * 36.1 / 41.7  
2NP04501506 11.3 / 15.0 * 54.2 / 62.5  
2NP04501006 7.5 / 10.0 * 36.1 / 41.7  
2NP04501506 11.3 / 15.0 * 54.2 / 62.5  
2NP04502006 15.0 / 20.0 * 72.2 / 83.3  
2NP04502506 18.8 / 25.0 * 90.3 / 104.2 150.9 / 168.3  
2NH04501025  
2NH04501525 11.3 / 15.0 * 31.3 / 36.1  
2NH04501025 7.5 / 10.0 * 20.8 / 24.1  
2NH04501525 11.3 / 15.0 * 31.3 / 36.1  
2NP04501025 7.5 / 10.0 * 20.8 / 24.1  
2NP04501525 11.3 / 15.0 * 31.3 / 36.1  
2NP04501025 7.5 / 10.0 * 20.8 / 24.1  
7.5 / 10.0 *  
20.8 / 24.1  
44.7 / 48.7  
57.7 / 63.7  
48.7 / 52.7  
61.7 / 67.8  
51.8 / 55.8  
64.9 / 70.9  
51.1 / 55.1  
64.1 / 70.2  
77.2 / 85.2  
90.2 / 100.2  
27.5  
030  
036  
042  
208/230-3-60  
208/230-3-60  
208/230-3-60  
10.0  
11.4  
13.9  
63.0  
78.0  
88.0  
1.1  
1.1  
1.1  
5.0  
7.3  
7.3  
2NP04501525 11.3 / 15.0 * 31.3 / 36.1  
2NP04502025 15.0 / 20.0 * 41.7 / 48.1  
2NP04502525 18.8 / 25.0 * 52.1 / 60.1  
048  
208/230-3-60  
13.0  
93.0  
1.5  
7.3  
2NH04501046  
2NH04501546  
2NH04501046  
2NH04501546  
2NP04501046  
2NP04501546  
2NP04501046  
2NP04501546  
2NH04502046  
2NH04502546  
10.0 **  
15.0 **  
10.0 **  
15.0 **  
10.0 **  
15.0 **  
10.0 **  
15.0 **  
20.0 **  
25.0 **  
12.0  
18.0  
12.0  
18.0  
12.0  
18.0  
12.0  
18.0  
24.1  
30.1  
030  
036  
042  
460-3-60  
460-3-60  
460-3-60  
5.0  
5.7  
6.4  
31.0  
40.0  
44.0  
0.6  
0.6  
0.6  
5.0  
7.3  
7.3  
35.4  
40  
40  
30.7  
35  
35  
38.6  
40  
40  
31.6  
35  
35  
39.4  
40  
40  
31.8  
35  
35  
39.6  
40  
40  
048  
460-3-60  
6.4  
46.5  
0.8  
7.3  
47.5  
50  
50  
55.3  
60  
60  
1.  
2.  
*
Dual element, time delay type.  
Standard circuit breakers may be used in Canada and on applications over 60 amps where the heaters are separately fused.  
KW listed is for 240 volts, use Table 15 for 208 or 230 volts.  
** KW listed is for 480 volts, use Table 15 for 460 volts.  
Unitary Products Group  
17  
 
036-21528-003-A-0703  
TABLE 17: APPLICATION DATA  
BHP  
036  
MODEL  
024  
800  
800  
900  
900  
030  
042  
048  
COOLING  
HEATING  
COOLING  
HEATING  
1000  
1000  
1125  
1125  
1050  
1050  
1200  
1200  
1300  
1400  
1400  
1500  
1500  
1400  
1600  
1600  
MINIMUM AIR FLOW  
(CFM)  
MAXIMUM AIR FLOW  
(CFM)  
MINIMUM OPERATING TEMPERATURE IN COOLING MODE  
45  
68 / 57  
55  
45  
68 / 57  
55  
45  
68 / 57  
55  
45  
68 / 57  
55  
45  
68 / 57  
55  
(AMBIENT, °F)  
MIMINIM MIXED AIR IN COOLING MODE  
(RETURN AIR, DB °F/WB °F)  
MINIMUM MIXED AIR IN HEATING MODE  
(RETURN AIR, °F)  
B1HP  
UNIT  
SIZE  
CORNER WEIGHTS  
SHIPPING  
WEIGHT  
OPERATING  
WEIGHT  
A
B
C
D
024  
030  
036  
042  
048  
356  
353  
388  
440  
485  
351  
348  
383  
435  
480  
97  
96  
93  
93  
81  
81  
84  
84  
106  
120  
132  
102  
115  
127  
89  
92  
101  
111  
104  
115  
FIGURE 3 - CENTER OF GRAVITY AND WEIGHTS  
CLEARANCES  
UNIT CLEARANCES  
(MINIMUM)  
Front  
Back  
12”  
0”  
Left Side (Filter Access)  
24”  
24”  
0”  
Right Side  
Below Unit1  
Above Unit2  
36” (For Condenser  
Air Discharge)  
1.  
Units may be installed on combustible floors made from  
wood or class A, B or C roof covering.  
2.  
Units must be installed outdoors. Overhanging structures  
or shrubs should not obstruct outdoor air discharge outlet.  
NOTE: FOR UNITS APPLIED WITH A ROOF CURB, THE  
MINIMUM CLE ARANCE MAY BE REDUCED FROM 1  
INCH TO 1/2 INCH BETWEEN COMBUSTIBLE ROOF  
CURB MATERIAL AND THE SUPPLY DUCT.  
FIGURE 4 - UNIT CLEARANCES  
18  
Unitary Products Group  
     
036-21528-003-A-0703  
FIGURE 5 - UNIT DIMENSIONS  
Unitary Products Group  
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036-21528-003-A-0703  
FIGURE 6 - TYPICAL APPLICATIONS  
20  
Unitary Products Group  
 
036-21528-003-A-0703  
FIGURE 7 - ROOF CURB DIMENSIONS  
Unitary Products Group  
21  
 
036-21528-003-A-0703  
FIGURE 8 - TYPICAL WIRING DIAGRAM (208/230-1-60 POWER SUPPLY)  
22  
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036-21528-003-A-0703  
FIGURE 9 - TYPICAL WIRING DIAGRAM (230-3-60 POWER SUPPLY)  
Unitary Products Group  
23  
 
036-21528-003-A-0703  
FIGURE 10 - TYPICAL WIRING DIAGRAM (460-3-60 POWER SUPPLY)  
24  
Unitary Products Group  
 
036-21528-003-A-0703  
8. Filters shall be furnished and be accessible  
through a removable access door, sealed air tight.  
(Single phase models - accessory kit available.  
Three phase models - standard from factory.)  
MECHANICAL SPECIFICATIONS  
GENERAL DESCRIPTION  
Units shall be factory-assembled, single packaged,  
Heat Pumps, designed for outdoor mounted installa-  
tion. Units shall have minimum SEER ratings of 13.0.  
They shall have built in, equal size, field convertible  
duct connections for down discharge supply/return or  
horizontal discharge supply/return.  
9. Units vertical discharge and return duct configura-  
tion shall be designed to fit between standard 24”  
O.C. beams without modification to building struc-  
ture, duct work and base unit.  
10. Condensate pan shall be internally sloped and  
conform to ASHRAE 62-89 self-draining standards,  
with 3/4" NPTI copper, ridged mount connection.  
The units shall be factory wired, piped, charged with R-  
22 refrigerant and factory tested prior to shipment. All  
unit wiring shall be both numbered and color coded.  
INDOOR (SUPPLY) FAN ASSEMBLY  
All units shall be manufactured in a facility certified to  
ISO 9001 standards, and the cooling performance shall  
be rated in accordance with DOE and ARI test proce-  
dures. Units shall be classified to UL 1995/CAN/CSA  
No. 236-M90 conditions.  
1. Fan shall be direct drive, constant CFM, ECM  
design. Job site selected (BHP) brake horse power  
shall not exceed the motors nameplate horse  
power rating.  
UNIT CABINET  
2. Fan wheel shall be double-inlet type with forward-  
curved blades, dynamically balanced to operate  
smoothly throughout the entire range of operation.  
Airflow design shall be constant air volume.  
1. Unit cabinet shall be constructed of G90 galva-  
nized steel, with exterior surfaces coated with a  
non-chalking, powered paint finish, certified at 750  
hours salt spray test per ASTM-B117 standards.  
3. Bearings shall be sealed and permanently lubri-  
cated for longer life and no maintenance.  
2. The unit top shall be a single piece “Water Shed”  
design, with drip edges and no-seam corners to  
provide optimum water integrity.  
4. Fan assembly shall be “Slip Track” (slide-out)  
design for easy removal and cleaning.  
3. Unit shall have a rigidly mounted condenser coil  
guard to provide protection from objects and per-  
sonnel after installation.  
OUTDOOR FAN ASSEMBLY  
1. The outdoor fan shall be of the direct-driven propel-  
ler type, discharge air vertically, have aluminum  
blades riveted to corrosion resistant steel spider  
bracket and shall be statically balanced for smooth  
operation.  
4. Indoor blower section shall be insulated with up to  
3/4” thick, aluminum, foil faced insulation, fastened  
to prevent insulation from entering the air stream.  
5. Cabinet panels shall be “large” size, easily remov-  
able for servicing and maintenance, with built-in lift  
handles.  
2. The outdoor fan motor shall be totally enclosed  
with permanently lubricated bearings and internally  
protected against overload conditions.  
6. Unit shall be built on a formed, “Super-Structure”  
design base pan, with embossments at critical  
points to add strength, rigidity and aid in minimizing  
sound.  
REFRIGERANT COMPONENTS  
1. Compressors:  
A. Shall be fully hermetic type, direct drive, internally  
protected with internal high-pressure relief and over  
temperature protection. The hermetic motor shall be  
suction gas cooled and have a voltage range of + or  
- 10% of the unit nameplate voltage.  
7. Full perimeter base rails shall be provided to  
assure reliable transit of equipment, overhead rig-  
ging, fork truck access and proper sealing on roof  
curb applications. Base rails shall be removable,  
when required, to lower unit height.  
Unitary Products Group  
25  
 
036-21528-003-A-0703  
B. Shall have internal isolation and sound muffling to  
minimize vibration and noise, and be externally iso-  
lated on a dedicated, independent mounting.  
room thermostat “LED” indication of unit lockout.  
Plus a built in 5 minute anti-short cycle protection.  
D. Unit shall have large, easily removable panels, cov-  
ering electrical controls and compressor, allowing  
easy access for any maintenance or servicing.  
2. Coils:  
A. Evaporator and condenser coils shall have alumi-  
num plate fins mechanically bonded to seamless  
internally-enhanced copper tubes with all joints  
brazed.  
ELECTRIC HEATING SECTION  
1. An electric heating section, with nickel chromium  
elements, shall be provided in a range of 5 thru 25  
KW.  
B. Evaporator and Condenser coils shall be of the  
direct expansion, draw-thru design.  
2. The heating section shall have an automatic reset  
primary limit control to prevent the heating element  
system from operating at an excessive tempera-  
ture.  
3. Refrigerant Circuit and Refrigerant Safety Compo-  
nents shall include:  
A. Independent thermal expansion devices (TXV).  
B. Solid-core filter dryer to eliminate any foreign matter.  
3. The heating section assembly shall slide out of the  
unit for easy maintenance and service.  
C. Accessible service gage connections on both suc-  
tion and discharge lines to charge, evacuate, and  
measure refrigerant pressure during any necessary  
servicing or troubleshooting, without losing charge  
and without disrupting condenser or evaporator air  
flow.  
4. Units with electric heating sections shall be wired  
for a single point power supply, with branch circuit  
fusing (where required).  
UNIT OPERATING CHARACTERISTICS  
D. The refrigeration system shall provide at least 10° F  
of liquid sub-cooling at design conditions.  
1. Unit shall be capable of starting and running at  
125° F outdoor temperature, exceeding maximum  
load criteria of ARI Standard 210/240.  
E. Unit shall have a suction line accumulator and auto-  
matic reversing valve.  
4. Unit Controls:  
2. The compressor, with standard controls, shall be  
capable of operation down to 45° F outdoor tem-  
perature.  
A. Unit shall contain a large, low voltage Terminal  
Board for easy connection of field low voltage wir-  
ing.  
ELECTRICAL REQUIREMENTS  
B. Controls shall be mounted in a large control box with  
tilt-out, hinged access door, allowing easy access  
for trouble shooting and maintenance without affect-  
ing the normal system operation pressures.  
All unit power wiring shall enter unit cabinet at a single  
factory provided location and be capable of side or bot-  
tom entry. This will minimize roof penetrations and  
avoid unit field modifications. Separate side and bot-  
tom openings shall be provided for the control wiring.  
C. Unit shall contain a reliable demand defrost control  
to provide defrost. The defrost control shall also  
have an “X” terminal to provide a 24 volt signal for  
26  
Unitary Products Group  
036-21528-003-A-0703  
Unitary Products Group  
27  
Subject to change without notice. Printed in U.S.A.  
CD: 6-21528  
036-21528-003-A-0703  
Supersedes: 036-21528-002-B-0403  
Copyright © by Unitary Products Group 2003. All rights reserved.  
Unitary  
Products  
Group  
5005  
Norman  
OK  
73069  
York  
Drive  

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