INSTALLATION INSTRUCTIONS FOR
LIGHT COMMERCIAL SELF-CONTAINED
PACKAGED HEATING & COOLING UNIT
3 TON - 6 TON CPC/CPH SERIES
®
US
C
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNEL
Prior to installation, thoroughly familiarize yourself with this Installation Manual. Observe all safety warnings.
During installation or repair, caution is to be observed.
It is your responsibility to install the product safely and to educate the customer on its safe use.
All information contained herein is subject to change without notice.
These installation instructions cover the outdoor
*NOTE: Please contact your distributor
installation of single package electric heating and
or our website for the applicable
cooling units. See the Specification Sheet applicable
Specification Sheet referred to in this
to your model* for information regarding accessories.
manual.
Goodman Manufacturing Company, L.P.
IO-354B
04/09
5151 Felipe, Suite 500, Houston, TX 77056
© 2008-2009 Goodman Manufacturing Company, L.P.
NATIONAL CODES
WARNING
This product is designed and manufactured to permit instal-
lation in accordance with National Codes. It is the installer’s
responsibility to install the product in accordance with Na-
tional Codes and/or prevailing local codes and regulations.
THIS UNIT MUST NOT BE USED AS A “CONSTRUCTION HEATER”
DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW
STRUCTURE. THIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE
OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES
AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES.
The heating and cooling capacities of the unit should be
greater than or equal to the design heating and cooling loads
of the area to be conditioned. The loads should be calculated
by an approved method or in accordance withASHRAE Guide
or Manual J - Load Calculations published by the Air Condi-
tioning Contractors of America.
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
Obtain from:
American National Standards Institute
1430 Broadway
WARNING
New York, NY 10018
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.
System design and installation should also, where applicable,
follow information presented in accepted industry guides such
as the ASHRAE Handbooks. The manufacturer assumes no
responsibility for equipment installed in violation of any code
or regulation. The mechanical installation of the packaged
roof top units consists of making final connections between
the unit and building services; supply and return duct con-
nections; and drain connections (if required). The internal
systems of the unit are completely factory-installed and tested
prior to shipment.
WARNING
HIGH VOLTAGE!
INSTALLATION AND REPAIR OF THIS UNIT SHOULD BE
PERFORMED ONLY BY INDIVIDUALS MEETING THE
REQUIREMENTS OF AN “ENTRY LEVEL TECHNICIAN” AS
SPECIFIED BY THE AIR CONDITIONING AND
REFRIGERATION INSTITUTE (ARI). ATTEMPTING TO
INSTALL OR REPAIR THIS UNIT WITHOUT SUCH
BACKGROUND MAY RESULT IN PRODUCT DAMAGE,
PERSONAL INJURY OR DEATH.
Units are generally installed on a steel roof mounting curb
assembly which has been shipped to the job site for installa-
tion on the roof structure prior to the arrival of the unit. The
model number shown on the unit’s identification plate identi-
fies the various components of the unit such as refrigeration
tonnage, heating input and voltage.
GENERAL INFORMATION
Carefully inspect the unit for damage including damage to
the cabinetry. Any bolts or screws which may have loosened
in transit must be re-tightened. In the event of damage, the
receiver should:
WARNING
TO PREVENT PROPERTY DAMAGE PERSONAL INJURY OR DEATH, DUE
TO FIRE, EXPLOSIONS, SMOKE, SOOT, CONDENSATION, ELECTRIC
SHOCK OR CARBON MONOXIDE, THIS UNIT MUST BE PROPERLY
INSTALLED, REPAIRED, OPERATED, AND MAINTAINED.
1. Make notation on delivery receipt of any visible
damage to shipment or container.
2. Notify carrier promptly and request an inspection.
3. In case of concealed damage, carrier should be
notified as soon as possible-preferably within 5 days.
4. File the claim with the following supporting documents:
a. Original Bill of Lading, certified copy, or indemnity
bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certified copy thereof, showing
trade and other discounts or reductions.
d. Copy of the inspection report issued by carrier
representative at the time damage is reported to the
carrier. The carrier is responsible for making prompt
inspection of damage and for a thorough
investigation of each claim. The distributor or
manufacturer will not accept claims from dealers for
transportation damage.
This unit is approved for outdoor installation ONLY.
To assure that your unit operates safely and efficiently, it
must be installed, operated, and maintained in accordance
with these installation and operating instructions, all local
building codes and ordinances.
EPA REGULATIONS
IMPORTANT: THE UNITED STATES ENVIRONMENTAL PROTECTION
AGENCY (EPA) HAS ISSUED VARIOUS REGULATIONS REGARDING
THE INTRODUCTION AND DISPOSAL OF REFRIGERANTS IN THIS
UNIT. FAILURE TO FOLLOW THESE REGULATIONS MAY HARM THE
ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF
SUBSTANTIAL FINES. BECAUSE REGULATIONS MAY VARY DUE TO
PASSAGE OF NEW LAWS, WE SUGGEST A CERTIFIED TECHNICIAN
PERFORM ANY WORK DONE ON THIS UNIT. SHOULD YOU HAVE
ANY QUESTIONS PLEASE CONTACT THE LOCAL OFFICE OF THE
EPA.
3
• When the unit is heating, the temperature of the return
NOTE: When inspecting the unit for transportation damage,
remove all packaging materials. Recycle or dispose of the
packaging material according to local codes.
air entering the unit must be between 50°F and 100°F.
GROUND LEVEL INSTALLATIONS ONLY:
PRE-INSTALLATION CHECKS
• When the unit is installed on the ground adjacent to
the building, a level concrete (or equal) base is
recommended. Prepare a base that is 3” larger than
the package unit footprint and a minimum of 3” thick.
Carefully read all instructions for the installation prior to in-
stalling unit. Ensure each step or procedure is understood
and any special considerations are taken into account be-
fore starting installation. Assemble all tools, hardware and
supplies needed to complete the installation. Some items may
need to be purchased locally.
• The base should also be located where no runoff of
water from higher ground can collect in the unit.
ROOF TOP INSTALLATIONS ONLY:
• To avoid possible property damage or personal injury,
the roof must have sufficient structural strength to carry
the weight of the unit(s) and snow or water loads as
required by local codes. Consult a structural engineer
to determine the weight capabilities of the roof.
• The unit may be installed directly on wood floors or
on ClassA, Class B, or Class C roof covering material.
• To avoid possible personal injury, a safe, flat surface
for service personnel should be provided.
• Adequate clearances from the unit to any adjacent
public walkways, adjacent buildings, building openings
or openable windows must be maintained in
accordance with National Codes.
UNIT LOCATION
WARNING
TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST
BE OBSERVED WHEN INSTALLING THE UNIT.
IMPORTANT NOTE: Remove wood shipping rails prior to
installation of the unit.
ALL INSTALLATIONS:
NOTE: Appliance is shipped from factory for vertical duct
application.
UNIT PRECAUTIONS
Proper installation of the unit ensures trouble-free operation.
Improper installation can result in problems ranging from
noisy operation to property or equipment damages, danger-
ous conditions that could result in injury or personal property
damage and could void the warranty. Give this booklet to the
user and explain it’s provisions. The user should retain these
instructions for future reference.
•
•
Do not stand or walk on the unit.
Do not drill holes anywhere in panels or in the base
frame of the unit. Unit access panels provide
structural support.
Do not remove any access panels until unit has been
installed on roof curb or field supplied structure.
Do not roll unit across finished roof without prior
approval of owner or architect.
Do not skid or slide on any surface as this may
damage unit base. The unit must be stored on a
flat, level surface. Protect the condenser coil
because it is easily damaged.
•
•
•
• For proper operation and condensate drainage, the
unit must be mounted level.
• Do not locate the unit in an area where the outdoor
air will be frequently contaminated by compounds
containing chlorine or fluorine. Common sources of
such compounds include swimming pool chemicals
and chlorine bleaches, paint stripper, adhesives,
paints, varnishes, sealers, waxes (which are not yet
dried) and solvents used during construction and
remodeling. Various commercial and industrial
processes may also be sources of chlorine/fluorine
compounds.
• To avoid possible illness or death of the building
occupants, do NOT locate outside air intake device
(economizer, manual fresh air intake, motorized fresh
air intake) too close to an exhaust outlet, gas vent
termination, or plumbing vent outlet. For specific
distances required, consult local codes.
ROOF CURB INSTALLATIONS ONLY:
Curb installations must comply with local codes and should
be done in accordance with the established guidelines of the
National Roofing Contractors Association.
Proper unit installation requires that the roof curb be firmly
and permanently attached to the roof structure. Check for
adequate fastening method prior to setting the unit on the
curb.
Full perimeter roof curbs are available from the factory and
are shipped unassembled. Field assembly, squaring, level-
ing and mounting on the roof structure are the responsibility
of the installing contractor. All required hardware necessary
for the assembly of the sheet metal curb is included in the
curb accessory.
• Allow minimum clearances from the enclosure for fire
protection, proper operation, and service access (see
Unit Clearances). These clearances must be
permanently maintained.
4
Adequate clearance around the unit should be kept for safety,
service, maintenance, and proper unit operation. Atotal clear-
ance of 75” on the main control panel side of the unit is rec-
ommended to facilitate possible fan shaft, coil, and electric
heat. A clearance of 48” is recommended on all other sides
of the unit to facilitate possible compressor removal, to allow
service access and to insure proper ventilation and condenser
airflow. The unit must not be installed beneath any obstruc-
tion. The unit should be installed remote from all building
exhausts to inhibit ingestion of exhaust air into the unit fresh
air intake.
WARNING
TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST
BE OBSERVED WHEN INSTALLING THE UNIT.
• Sufficient structural support must be determined prior
to locating and mounting the curb and package unit.
• Ductwork must be constructed using industry
guidelines. The duct work must be placed into the
roof curb before mounting the package unit. Our full
perimeter curbs include duct connection frames to be
assembled with the curb. Cantilevered type curbs
are not available from the factory.
• Curb insulation, cant strips, flashing and general
roofing material are furnished by the contractor.
The curbs must be supported on parallel sides by roof mem-
bers. The roof members must not penetrate supply and re-
turn duct opening areas as damage to the unit might occur.
NOTE: The unit and curb accessories are designed to allow
vertical duct installation before unit placement. Duct
installation after unit placement is not recommended.
CAUTION
INSULATED
PANELS
ALL CURBS LOOK SIMILAR. TO AVOID INCORRECT CURB
POSITIONING, CHECK JOB PLANS CAREFULLY AND VERIFY MARKINGS
ON CURB ASSEMBLY. INSTRUCTIONS MAY VARY IN CURB STYLES AND
SUPERSEDES INFORMATION SHOWN.
See the manual shipped with the roof curb for assembly and
installation instructions.
CLEARANCES
ROOF CURB INSTALLATION
ROOF CURB POST-INSTALLATION
CHECKS
48”
After installation, check the top of the curb, duct connection
frame and duct flanges to make sure gasket has been ap-
plied properly. Gasket should be firmly applied to the top of
the curb perimeter, duct flanges and any exposed duct con-
nection frame. If gasket is loose, re-apply using strong
weather resistant adhesive.
48”
75”
UNIT CLEARANCES
5
PROTRUSION
RIGGING DETAILS
Inspect curb to ensure that none of the utility services (elec-
tric) routed through the curb protrude above the curb.
WARNING
TO PREVENT PROPERTY DAMAGE, THE UNIT SHOULD REMAIN IN AN UPRIGHT
POSITION DURING ALL RIGGING AND MOVING OPERATIONS. TO FACILITATE
LIFTING AND MOVING WHEN A CRANE IS USED, PLACE THE UNIT IN AN
ADEQUATE CABLE SLING.
CAUTION
IF PROTRUSIONS EXIST, DO NO ATTEMPT TO SET UNIT ON CURB.
ROOF TOP DUCT CONNECTIONS
CAUTION
Install all duct connections on the unit before placing the unit
on rooftop.
IF UNITS ARE LIFTED TWO AT A TIME, THE FORK HOLES ON THE
CONDENSER END OF THE UNIT MUST NOT BE USED. MINIMUM FORK
LENGTH IS 42” TO PREVENT DAMAGE TO THE UNIT; HOWEVER, 48”
IS RECOMMENDED.
HORIZONTAL DISCHARGE
For horizontal discharge, remove the supply and return duct
covers and place them over the vertical discharge return and
supply openings. Install with insulation facing up, using the
longer screws provided in the literature package.
Provisions for forks have been included in the unit base frame.
No other fork locations are approved.
WARNING
Ensure that the top of the duct connection frame is flush with
the top of the roof curb.
TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED
WHEN INSTALLING THE UNIT.
Flexible duct connectors between the unit and ducts are rec-
ommended. Insulate and weatherproof all external ductwork
and joints as required and in accordance with local codes.
•
•
•
•
Unit must be lifted by the four lifting holes located at
the base frame corners.
Lifting cables should be attached to the unit with
shackles.
The distance between the crane hook and the top of
the unit must not be less than 60”.
Two spreader bars must span over the unit to prevent
damage to the cabinet by the lift cables. Spreader
bars must be of sufficient length so that cables do not
come in contact with the unit during transport.
Remove wood struts mounted beneath unit base
frame before setting unit on roof curb. These struts
are intended to protect unit base frame from fork lift
damage. Removal is accomplished by extracting the
sheet metal retainers and pulling the struts through
the base of the unit. Refer to rigging label on the unit.
11”
4 7/8””
REMOVE
COVERS
17”
7 3/8”
RETURN
25”
SUPPLY
12”
Important: If using bottom discharge with roof curb, duct-
work should be attached to the curb prior to installing the
unit. Ductwork dimensions are shown in Roof Curb Installa-
tion Instructions.
6 3/16”
HORIZONTAL DISCHARGE DUCT CONNECTIONS
Refer to the Roof Curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with the
National Roofing Contractors Association Manual.
6
Lower unit carefully onto roof mounting curb. While rigging unit, center of gravity will cause condenser end to be lower
than supply air end.
To assist in determining rigging requirements, unit weights are shown as follows:
A
C
RETURN
Y
CONDENSER
COIL
EVAPORATOR COIL
CG
SUPPLY
COMPRESSOR
X
B
D
CORNER & CENTER OF GRAVITY LOCATIONS
Corner Weights ( lbs )
X
(in)
Y
(in)
Shipping Weight Operating Weight
Model
(lbs)
(lbs)
A
B
C
D
CPC036* 35
CPC048* 35
CPC060* 35
CPC072* 35
CPH036* 34
CPH048* 34
CPH060* 34
CPH072* 34
27
27
27
27
28
28
28
28
525
500
115
150
105
130
560
605
665
605
610
615
675
535
580
640
580
585
590
650
125
135
150
130
135
135
145
160
170
190
180
185
185
205
110
120
130
110
115
115
125
140
155
170
155
155
160
175
* Weights shown are belt drive with no accessories.
7
All line voltage connections must be made through weather-
proof fittings. All exterior power supply and ground wiring
must be in approved weatherproof conduit.
CAUTION
TO PREVENT SEVERE DAMAGE TO THE BOTTOM OF THE UNIT, DO NOT
FORK LIFT UNIT AFTER WOOD STRUTS HAVE BEEN REMOVED.
The main power supply wiring to the unit and low voltage
wiring to accessory controls must be done in accordance with
Bring condenser end of unit into alignment with the curb. With these instructions, the latest edition of the National Electrical
condenser end of the unit resting on curb member and using Code (ANSI/NFPA 70), and all local codes and ordinances.
curb as a fulcrum, lower opposite end of the unit until entire All field wiring shall conform with the temperature limitations
unit is seated on the curb. When a rectangular cantilever for Type T wire (63°F/35°C rise).
curb is used, care should be taken to center the unit. Check
The unit is factory wired for the voltage shown on the unit’s
for proper alignment and orientation of supply and return open-
data plate. Refer to model nomenclature in Appendix D for
ings with duct.
voltage requirement for your unit.
RIGGING REMOVAL
NOTE: If supply voltage is 208V, lead on primary of trans-
former must be moved from the 230V to the 208V tap. Refer
to wiring diagram on unit for details.
CAUTION
Main power wiring should be sized for the minimum wire
ampacity shown on the unit’s data plate. Size wires in accor-
dance with the ampacity tables in Article 310 of the National
TO PREVENT DAMAGE TO THE UNIT, DO NOT ALLOW CRANE HOOKS
AND SPREADER BARS TO REST ON THE ROOF OF THE UNIT.
Remove spreader bars, lifting cables and other rigging equip- Electrical Code. If long wires are required, it may be neces-
ment.
sary to increase the wire size to prevent excessive voltage
drop. Wires should be sized for a maximum of 3% voltage
drop.
ELECTRICAL WIRING
CAUTION
WARNING
O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, USE
T
HIGH VOLTAGE!
ONLY COPPER CONDUCTORS.
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
CAUTION
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND
DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER
SERVICING.
WARNING
HIGH VOLTAGE!
TO AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, DO NOT TAMPER WITH FACTORY
WIRING. THE INTERNAL POWER AND CONTROL WIRING
OF THESE UNITS ARE FACTORY-INSTALLED AND HAVE
BEEN THOROUGHLY TESTED PRIOR TO SHIPMENT.
CONTACT YOUR LOCAL REPRESENTATIVE IF
ASSISTANCE IS REQUIRED.
NOTE: A weather-tight disconnect switch, properly sized for
the unit total load, must be field installed. An external field
supplied disconnect may be mounted on the exterior panel.
Ensure the data plate is not covered by the field-supplied
disconnect switch.
•
Some disconnect switches are not fused. Protect the
power leads at the point of distribution in accordance
with the unit’s data plate.
CAUTION
TO PREVENT DAMAGE TO THE WIRING, PROTECT WIRING FROM
SHARP EDGES. FOLLOW NATIONAL ELECTRICAL CODE AND ALL
LOCAL CODES AND ORDINANCES. DO NOT ROUTE WIRES THROUGH
REMOVABLE ACCESS PANELS.
•
The unit must be electrically grounded in accordance
with local codes or, in the absence of local codes,
with the latest edition of the National Electrical Code
(ANSI-NFPA 70). A ground lug is provided for this
purpose. Size grounding conductor in accordance
with Table 250-95 of the National Electrical Code. Do
not use the ground lug for connecting a neutral
conductor.
CAUTION
CONDUIT AND FITTINGS MUST BE WEATHER-TIGHT TO PREVENT
WATER ENTRY INTO THE BUILDING.
•
Remove plug in panel located at the condenser end
of unit and route conduit to control box. Remove plug
in control box and connect power wiring to the
contactor closest to the entrance. If Single Point kit is
used, refer to Installation Instructions supplied with
kit.
For unit protection, use a fuse or HACR circuit breaker that is
in excess of the circuit ampacity, but less than or equal to the
maximum overcurrent protection device. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN
ON UNIT DATA PLATE.
8
MAIN POWER
LOW VOLTAGE
BLOCK
RETURN
3.5 DIA.
POWER THRU
THE CURB
LOW VOLTAGE
ENTRANCE
41/2”
POWER THRU
THE CURB
CONTROL BOX
47 1/2”
7 1/2”
WARNING
ELECTRICAL ENTRANCE AND THRU CURB
FAILURE OF UNIT DUE TO OPERATION ON IMPROPER LINE VOLTAGE
OR WITH EXCESSIVE PHASE UNBALANCE CONSTITUTES PRODUCT
ABUSE AND WILL VOID YOUR WARRANTY AND MAY CAUSE SEVERE
DAMAGE TO THE UNIT ELECTRICAL COMPONENTS.
LOW VOLTAGE CONTROL WIRING
1. A 24V thermostat must be installed for unit operation.
It may be purchased with the unit or field -supplied.
Thermostats may be programmable or
electromechanical as required.
Areas Without Convenience Outlet
It is recommended that an independent 115V power source
be brought to the vicinity of the roof top unit for portable lights
and tools used by the service mechanic.
2. Locate thermostat or remote sensor in the conditioned
space where it will sense average temperature. Do
not locate the device where it may be directly exposed
to supply air, sunlight or other sources of heat. Follow
installation instructions packaged with the thermostat.
3. Use #18 AWG wire for 24V control wiring runs not
exceeding 75 feet. Use #16AWG wire for 24V control
wiring runs not exceeding 125 feet. Use #14 AWG
wire for 24V control wiring runs not exceeding 200
feet. Low voltage wiring may be National Electrical
Code (NEC) Class 2 where permitted by local codes.
4. Route thermostat wires from sub-base terminals to
the unit. Control wiring should enter through the
condenser panel opening indicated in “Electrical
Entrance Locations” figure. Connect thermostat and
any accessory wiring to low voltage terminal block
TB1 in the main control box.
UNITS INSTALLED ON ROOF TOPS
Main power and low voltage wiring may enter the unit through
the condenser end or through the roof curb. Install conduit
connectors at the desired entrance locations. External con-
nectors must be weatherproof. All holes in the unit base must
be sealed (including those around conduit nuts) to prevent
water leakage into building. All required conduit and fittings
are to be field supplied.
Supply voltage to roof top unit must not vary by more than
10% of the value indicated on the unit’s data plate. Phase
voltage unbalance must not exceed 2%. Contact your local
power company for correction of improper voltage or phase
unbalance.
NOTE: Field-supplied conduit may need to be installed
depending on unit/curb configuration. Use #18 AWG solid
conductor wire whenever connecting thermostat wires to
terminals on sub-base. DO NOT use larger than #18 AWG
wire. A transition to #18 AWG wire may be required before
entering thermostat sub-base.
HIGH VOLTAGE ENTRANCE
(REMOVE PLUG)
12 3/8”
TERMINAL THERMOSTAT
30 1/4”*
Red
Green
Orange
White
Brown
Yellow
C (Blue)
R (24V)
G (Fan)
O (Rev. Valve)
W1 (Heat, 2nd)*
W2 (Heat 3rd)*
Y (Cool)
1:4
C (Common)
* (6 Ton - 34 1/4”)
LOW VOLTAGE ENTRANCE
*Optional field installed heat connections
CPC/H 036 THROUGH 072
9
CIRCULATING AIR AND FILTERS
STARTUP, ADJUSTMENTS, AND CHECKS
DUCTWORK
WARNING
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances must
be maintained (see “Clearances” section). The supply duct
should be provided with an access panel large enough to
inspect the air chamber downstream of the heat exchanger.
A cover should be tightly attached to prevent air leaks.
HIGH VOLTAGE!
TO AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, BOND THE FRAME OF THIS UNIT TO
THE BUILDING ELECTRICAL GROUND BY USE OF THE
GROUNDING TERMINAL PROVIDED OR OTHER
ACCEPTABLE MEANS. DISCONNECT ALL POWER BEFORE
SERVICING OR INSTALLING THIS UNIT.
Ductwork dimensions are shown in the roof curb installation
manual.
PRE-STARTUP INSTRUCTIONS
If desired, supply and return duct connections to the unit may
be made with flexible connections to reduce possible unit
operating sound transmission.
CAUTION
TO PREVENT PROPERTY DAMAGE OR PERSONAL INJURY, DO NOT
START THE UNIT UNTIL ALL NECESSARY PRE-CHECKS AND TESTS
HAVE BEEN PERFORMED.
VENTING
NOTE: Venting is self-contained.
Prior to the beginning of Startup, Adjustments, and Checks
procedures, the following steps should be completed in the
building.
CONDENSATE DRAIN CONNECTION
THERMOSTAT. Set the thermostat in the conditioned
space at a point at least 10°F below zone temperature.
Set the thermostat system switch on COOL and the
fan switch on AUTO.
NIGHT SETBACK THERMOSTAT (OPTIONAL). Set
thermostat at a point at least 10°F below zone
temperature.
CONDENSATE DRAIN CONNECTION
A 3/4” NPT drain connection is supplied for condensate pip-
ing. An external trap must be installed for proper condensate
drainage.
DRAIN
CONNECTION
UNIT
2" MINIMUM
WARNING
FLEXIBLE
TUBING-HOSE
OR PIPE
MOVING MACHINERY HAZARD!
3" MINIMUM
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH, DISCONNECT
POWER TO THE UNIT AND PADLOCK IN THE “OFF” POSITION BEFORE
SERVICNG FANS.
A POSITIVE LIQUID
SEAL IS REQUIRED
HEATING STARTUP
Drain Connection
On new installations, or if a major component has been re-
placed, the operation of the unit must be checked.
Install condensate drain trap as shown. Use 3/4" drain line
and fittings or larger. Do not operate without trap.
Check unit operation as outlined in the following instructions.
If any sparking, odors, or unusual sounds are encountered,
shut off electrical power and recheck for wiring errors, or ob-
structions in or near the blower motors. Duct covers must
be removed before operating unit.
HORIZONTAL DRAIN
Drainage of condensate directly onto the roof may be ac-
ceptable; refer to local code. It is recommended that a small
drip pad of either stone, mortar, wood or metal be provided to
prevent any possible damage to the roof.
The Startup, Adjustments, and Checks procedure provides a
step-by-step sequence which, if followed, will assure the
proper startup of the equipment in the minimum amount of
time. Air balancing of duct system is not considered part of
this procedure. However, it is an important phase of any air
conditioning system startup and should be performed upon
completion of the Startup, Adjustments, and Checks proce-
dure. The Startup, Adjustments, and Checks procedure at
outside ambients below 55°F should be limited to a readi-
ness check of the refrigeration system with the required final
check and calibration left to be completed when the outside
ambient rises above 55°F.
CLEANING
Due to the fact that drain pans in any air conditioning unit
will have some moisture in them, algae and fungus will
grow due to airborne bacteria and spores. Periodic clean-
ing is necessary to prevent this build-up from plugging the
drain.
10
System Voltage - That nominal voltage value assigned to a
circuit or system for the purpose of designating its voltage
class.
TOOLS REQUIRED
Refrigeration gauge and manifold
Voltmeter
Nameplate Voltage - That voltage assigned to a piece of
equipment for the purpose of designating its voltage class
and for the purpose of defining the minimum and maximum
voltage at which the equipment will operate.
Clamp-on ammeter
Ohmmeter
Test lead
(Minimum #16 AWG with insulated alligator clips)
Air temperature measuring device
General refrigeration mechanics’ tools
Utilization Voltage - The voltage of the line terminals of the
equipment at which the equipment must give fully satisfac-
tory performance. Once it is established that supply voltage
will be maintained within the utilization range under all sys-
tem conditions, check and calculate if an unbalanced condi-
tion exists between phases. Calculate percent voltage un-
balance as follows:
TEMPORARY HEATING OR COOLING
If the unit is to be used for temporary heating or cooling, a
“Startup, Adjustments, and Checks” must first be performed
in accordance with this manual. Failure to comply with this
requirement will void the warranty. After the machines are
used for temporary heating or cooling, inspect the coils, fans,
and motors for unacceptable levels of construction dust and
dirt and install new filters.
Three Phase Models Only
2) MAXIMUM VOLTAGE DEVIATIONS
FROM AVERAGE VOLTAGE
3) PERCENT VOLTAGE
UNBALANCE
= 100 X
1) AVERAGE VOLTAGE
CONTRACTOR RESPONSIBILITY
HOW TO USE THE FORMULA:
EXAMPLE: With voltage of 220, 216, and 213
The installing contractor must be certain that:
1) Average Voltage = 220+216+213=649 / 3 = 216
2) Maximum Voltage Deviations from Average Voltage = 220 - 216 = 4
•
•
•
All supply and return air ductwork is in place and
corresponds with installation instructions.
All thermostats are mounted and wired in accordance
with installation instructions.
All electric power, all gas, hot water or steam line
connections, and the condensate drain installation
have been made to each unit on the job. These main
supply lines must be functional and capable of
operating all units simultaneously.
4
216
400
216
3) Percent Voltage Unbalance = 100 x
=
= 1.8%
Percent voltage unbalance MUST NOT exceed 2%
.
FIELD DUCT CONNECTIONS
Verify that all duct connections are tight and that there is no
air bypass between supply and return.
FILTER SECTION CHECK
ROOF CURB INSTALLATION CHECK
Remove filter section access panels and check that filters
are properly installed. Note airflow arrows on filter frames.
Inspect the roof curb for correct installation. The unit and curb
assembly should be level. Inspect the flashing of the roof
mounting curb to the roof, especially at the corners, for good
workmanship. Also check for leaks around gaskets. Note any
deficiencies in a separate report and forward to the contrac-
tor.
BELT DRIVE MODELS ONLY
BEARING CHECK
Prior to energizing any fans, check and make sure that all
setscrews are tight so that bearings are properly secured to
shafts.
OBSTRUCTIONS, FAN CLEARANCE AND WIRING
Remove any extraneous construction and shipping materi-
als that may be found during this procedure. Rotate all fans
manually to check for proper clearances and that they rotate
freely. Check for bolts and screws that may have jarred loose
during shipment to the jobsite. Retighten if necessary. Re-
tighten all electrical connections.
For heat pump units, the airflow must be adjusted so that the
air temperature rise falls within the ranges given stated on
Data Plate (see Appendix A - Blower Performance).
TENSION AND ALIGNMENT ADJUSTMENT
Correct belt tension is very important to the life of your belt.
Too loose a belt will shorten its life; too tight, premature mo-
tor and bearing failure will occur. Check you belt drive for
adequate “run-in” belt tension by measuring the force required
to deflect the belt at the midpoint of the span length. Belt
tension force can be measured using a belt tension gauge,
available through most belt drive manufacturers.
PRE-STARTUP PRECAUTIONS
It is important to your safety that the unit has been properly
grounded during installation. Check ground lug connection
in main control box for tightness prior to closing circuit breaker
or disconnect switch. Verify that supply voltage on line side
of disconnect agrees with voltage on unit identification plate
and is within the utilization voltage range as indicated in Ap-
pendix C Electrical Data.
11
ing and clamps. The entire refrigeration system has been
factory charged and tested, making it unnecessary to field
charge. Factory charges are shown on the unit nameplate.
Install service manifold hoses. Gauges should read satura-
tion pressure corresponding to ambient temperature. Charge
should be checked to obtain 12° to 15° of sub-cooling per
system (i.e. compressor circuits).
START-UP PROCEDURE AND CHECKLIST
Begin with power turned off at all disconnects.
1. Turn thermostat system switch to “Cool,” and fan
switch to “Auto” and turn temperature setting as high
as it will go.
t = Span length, inches
C = Center distance, inches
D = Larger sheave diameter, inches
d = Smaller sheave diameter, inches
2. Inspect all registers and set them to the normal open
position.
h = Deflection height, inches
3. Turn on the electrical supply at the disconnect.
DRIVE BELT TENSION ADJUSTMENT
4. Turn the fan switch to the “ON” position. The blower
should operate after a 7 second delay.
DEFLECTION
FORCE (lbs)
SHEAVE
DIAMETER
(in)
TYPE
DEFLECTION
(in)
5. Turn the fan switch to “Auto” position. The blower
should stop after a 65 second delay.
BELT DRIVE
Used
New
6. Slowly lower the cooling temperature until the unit
starts. The compressor, blower and fan should now
be operating. Allow the unit to run 10 minutes, make
sure cool air is being supplied by the unit.
A, AX Standard 3.0 to 4.0 4.2 ± .5 5.5 ± .5
0.313
RECOMMENDED POUNDS OF FORCE PER BELT
New V-belts will drop rapidly during the first few hours of use.
Check tension frequently during the first 24 hours of opera-
tion. Tension should fall between the minimum and maximum
force. To determine the deflection distance from a normal
position, measure the distance from sheave to sheave using
a straightedge or a cord. This is your reference line. On mul-
tiple belt drives, an adjacent undeflected belt can be used as
a reference.
7. Turn the temperature setting to the highest position,
stopping the unit. The indoor blower will continue to
run for 65 seconds.
8. Turn the thermostat system switch to “OFF” and
disconnect all power when servicing the unit.
WARNING
EVAPORATOR FAN ROTATION CHECK (THREE PHASE MODELS
ONLY)
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
Check that fan rotates counter-clockwise when viewed from
the drive side of unit and in accordance with rotation arrow
shown on blower housing. If it does not, reverse the two in-
coming power cables. In this case, repeat bearing check.
HEAT PUMP START-UP PROCEDURE
Do not attempt to change load side wiring. Internal wiring
assures all motors and compressors will rotate in correct di-
rection once evaporator fan motor rotation check has been
made.
9. Check the cooling mode for the heat pump in the same
manner as above. The reversing valve is energized
when the thermostat is placed in the cooling position.
A clicking sound should be noticeable from the
reversing valve. By lowering the temperature setting
to call for cooling, the contractor is energized. The
compressor, blower and fan should then be running.
After the cooling mode is checked out, turn the
thermostat system switch to “OFF”.
ELECTRICAL INPUT CHECK
Make preliminary check of evaporator fan ampere draw and
verify that motor nameplate amps are not exceeded. A final
check of amp draw should be made upon completion of air
balancing of the duct system (see Appendix B).
10. Turn the thermostat system switch to “HEAT” and fan
switch to “AUTO”.
REFRIGERATION SYSTEM CHECKS
11. Slowly raise the heating temperature setting. When
the heating first stage makes contact, stop raising the
temperature setting.. The compressor, blower and fan
should now be running with the reversing valve in the
Ensure the hold-down bolts on the compressor are secure
and have not vibrated loose during shipment. Check that vi-
bration grommets have been installed. Visually check all pip-
12
de-energized (heating) position. After giving the unit
time to settle out, make sure the unit is supplying
heated air.
that compressor RLA corresponds to values shown in Ap-
pendix C. RLA draw can be much lower than values listed at
low load conditions and low ambient condensing tempera-
tures. Values in Appendix C can slightly exceed at high load
conditions and high ambient condensing temperatures.
12. If the outdoor ambient is above 80°F, the unit may trip
on its high pressure cut out when on heating. The
compressor should stop. The heating cycle must be
thoroughly checked, so postpone the test to another
day when conditions are more suitable but-DO NOT
FAIL TO TEST.
HEAT PUMP OPERATION
COOLING CYCLE
If the outdoor ambient is low and the unit operates
properly on the heating cycle, you may check the
pressure cutout operation by blocking off the indoor
return air until the unit trips.
When the heat pump is in the cooling cycle, it operates ex-
actly as a Summer Air Conditioner unit. In this mode, all the
charts and data for service that apply to summer air condi-
tioning apply to the heat pump. Most apply on the heating
cycle except that “condenser” becomes “evaporator”, “evapo-
rator” becomes “condenser”, “cooling” becomes “heating”.
13. If unit operates properly in the heating cycle, raise
the temperature setting until the heating second stage
makes contact. Supplemental resistance heat, if
installed should now come on. Make sure it operates
properly.
HEATING CYCLE
The heat pump operates in the heating cycle by redirecting
refrigerant flow through the refrigerant circuit external to the
compressor. This is accomplished with through the reversing
valve. Hot discharge vapor from the compressor is directed
to the indoor coil (evaporator on the cooling cycle) where the
heat is removed, and the vapor condenses to liquid. It then
goes through the expansion device to the outdoor coil (con-
denser on the cooling cycle) where the liquid is evaporated,
and the vapor goes to the compressor.
NOTE: If outdoor thermostats are installed the
outdoor ambient must be below the set point of these
thermostats for the heaters to operate. It may be
necessary to jumper these thermostats to check
heater operation if outdoor ambient is mild.
14. For thermostats with emergency heat switch, return
to step 11. The emergency heat switch is located at
the bottom of the thermostat. Move the switch to
emergency heat. The heat pump will stop, the blower
will continue to run, all heaters will come on and the
thermostat emergency heat light will come on.
15. If checking the unit in the wintertime, when the outdoor
coil is cold enough to actuate the defrost control,
observe at least one defrost cycle to make sure the
unit defrosts completely.
When the solenoid valve coil is operated either from heating
to cooling or vice versa, the piston in the reversing valve to
the low pressure (high pressure) reverse positions in the re-
versing valve.
The following figures show a schematic of a heat pump on
the cooling cycle and the heating cycle. In addition to a re-
versing valve, a heat pump is equipped with an expansion
device and check valve for the indoor coil, and similar equip-
ment for the outdoor coil. It is also provided with a defrost
control system.
FINAL SYSTEM CHECKS
16. Check to see if all supply and return air grilles are
adjusted and the air distribution system is balanced
for the best compromise between heating and cooling.
17. Check for air leaks in the ductwork. See Sections on
Air Flow Adjustments.
18. Make sure the unit is free of “rattles”, and the tubing
in the unit is free from excessive vibration. Also make
sure tubes or lines are not rubbing against each other
or sheet metal surfaces or edges. If so, correct the
trouble.
The expansion devices are flowrator distributors and perform
the same function on the heating cycle as on the cooling cycle.
The flowrator distributors also act as check valves to allow
for the reverse of refrigerant flow.
19. Set the thermostat at the appropriate setting for
cooling and heating or automatic changeover for
normal use.
20. Be sure the Owner is instructed on the unit operation,
filter, servicing, correct thermostat operation, etc.
REFRIGERATION PERFORMANCE CHECK
Under normal summertime (full load) operating conditions,
superheat should be between 8°F and 12°F and sub-cooling
measured at the condenser outlet should be 15°F (nominal).
A 25°F to 35°F temperature difference should exist between
the entering condenser air and the temperature correspond-
ing to the compressor saturated discharge pressure. Check
13
DEFROST CONTROL
COOLING
SERVICE PORT
REVERSING VALVE
During operation the power to the circuit board is controlled
by a temperature sensor, which is clamped to a feeder tube
entering the outdoor coil. Defrost timing periods of 30,60 and
90 minutes may be selected by connecting the circuit board
jumper to 30, 60 and 90 respectively. Accumulation of time
for the timing period selected starts when the sensor closes
(approximately 31° F), and when the wall thermostat calls for
heat. At the end of the timing period, the unit’s defrost cycle
will be initiated provided the sensor remains closed. When
the sensor opens (approximately 75° F), the defrost cycle is
terminated and the timing period is reset. If the defrost cycle
is not terminated due to the sensor temperature, a ten minute
override interrupts the unit’s defrost period.
SERVICE VALVE
SERVICE PORT
ACCUMULATOR
COMPRESSOR
DISTRIBUTOR
EXPANSION DEVICE
SERVICE PORT
CHECK VALVE
ORIFICE
CHECK VALVE
ORIFICE
INDOOR
COIL
SERVICE
VALVE
OUTDOOR
COIL
HEATING
AIR FLOW ADJUSTMENTS
SERVICE PORT
REVERSING VALVE
SERVICE VALVE
The drive on the supply fan is typically set in the middle of the
RPM range. The drive motor sheave pitch diameter is field
adjustable for the required airflow. Refer to “Drive
Adjustments” section below.
ACCUMULATOR
When the final adjustments are complete, the current draw
of the motor should be checked and compared to the full
load current rating of the motor. The amperage must not ex-
ceed the service factor stamped on the motor nameplate.
The total airflow must not be less than that required for op-
eration of the electric heaters or the furnace.
COMPRESSOR
DISTRIBUTOR
DISTRIBUTOR
SERVICE PORT
CHECK VALVE
CHECK VALVE
ORIFICE
INDOOR
COIL
ORIFICE
SERVICE
VALVE
OUTDOOR
COIL
If an economizer is installed, check the unit operating bal-
ance with the economizer at full outside air and at minimum
outside air. Upon completion of the air flow balancing, we
recommend replacing the variable pitched motor sheave with
a properly-sized fixed sheave. A matching fixed sheave will
provide longer belt and bearing life and vibration free opera-
tion. Initially, it is best to have a variable pitched motor sheave
for the purpose of airflow balancing, but once the balance
has been achieved, fixed sheaves maintain alignment and
minimize vibration more effectively. For direct drive units, move
green wire for fan.
When the heat pump is on the heating cycle, the outdoor coil
is functioning as an evaporator. The temperature of the re-
frigerant in the outdoor coil must be below the temperature of
the outdoor air in order to extract heat from the air. Thus, the
greater the difference in the outdoor temperature and the
outdoor coil temperature, the greater the heating capacity of
the heat pump. This phenomenon is a characteristic of a
heat pump. It is a good practice to provide supplementary
heat for all heat pump installations in areas where the tem-
perature drops below 45° F. It is also a good practice to
provide sufficient supplementary heat to handle the entire
heating requirement should there be a component failure of
the heat pump, such as a compressor, or refrigerant leak,
etc.
NOTE: Never run CFM below 350 CFM per ton, evaporator
freezing or poor unit performance is possible.
PSC MOTOR
Since the temperature of the refrigerant in the outdoor coil on
the heating cycle is generally below freezing point, frost forms
on the surfaces of the outdoor coil under certain weather con-
ditions of temperature and relative humidity. Therefore, it is
necessary to reverse the flow of the refrigerant to provide hot
gas in the outdoor coil to melt the frost accumulation. This is
accomplished by reversing the heat pump to the cooling cycle.
At the same time, the outdoor fan stops to hasten the tem-
perature rise of the outdoor coil and lessen the time required
for defrosting. The indoor blower continues to run and the
supplementary heaters are energized.
Adjust the CFM for the unit by changing the speed tap of the
indoor blower motor at the EBTDR “com” connection with the
one of the speed taps on “M1” or “M2” (Black-High Speed,
Blue-Medium Speed, Red-Low Speed).
X-13 MOTOR
Adjust the CFM for the unit by changing the position of the
low voltage leads on the motor terminal block. Green is for
Fan Only. Yellow is for Cooling and Heat Pump Heating. Re-
fer to Appendix A for blower performance at each speed tap.
NOTE: If more than one lead is energized simultaneously,
the motor will run at the higher speed.
14
DRIVE ADJUSTMENTS
MOTOR SHEAVE ADJUSTMENTS
CAUTION
SHEET METAL PARTS, SCREWS, CLIPS AND SIMILAR ITEMS INHERENTLY
HAVE SHARP EDGES, AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION.
VL, VM, & 2VP VARIABLE PITCH KEY TYPE MOTOR SHEAVES
The driving and driven motor sheaves should be in align-
ment with each other and the shafts parallel.
The Self Contained PackagedAir Conditioner and Heat Pump
should operate for many years without excessive service calls
if the unit is installed properly. However it is recommended
that the homeowner inspect the unit before a seasonal start
up. The coils should be free of debris so adequate airflow is
achieved. The return and supply registers should be free of
any obstructions. The filters should be cleaned or replaced.
These few steps will help to keep the product up time to a
maximum. The Service section that follows should help in
identifying problems if the unit does not operate properly.
VL & VM SHEAVES ADJUSTMENT
1. Loosen set screw “B” using a 5/32" Allen key.
2. Making half or full turns from closed position, adjust
sheave pitch diameter for desired speed. DO NOT
OPEN MORE THAN FIVE FULL TURNS.
3. Tighten set screw “B” securely over flat.
4. Carefully put on belts and adjust belt tension. DO NOT
FORCE BELTS OVER GROOVES.
5. Ensure all keys are in place and the set screws tight
before starting drive. Recheck set screws and belt
tension after 24 hours service.
FILTERS
CAUTION
NOTE: Future adjustments should be made by loosening the
belt tension and increasing or decreasing the pitch diameter
of the sheave by half or full turns as required. Readjust belt
tension before starting drive.
TO PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF
EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT
BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR
FILTER INSTALLED IN THE RETURN AIR SYSTEM.
Every application may require a different frequency of replace-
ment of dirty filters. Filters must be replaced at least every
three (3) months during operating seasons.
C
Dirty filters are the most common cause of inadequate heat-
ing or cooling performance. Filter inspection should be made
at least every two months; more often if necessary because
of local conditions and usage.
B
VL & VM
Dirty throwaway filters should be discarded and replaced with
a new, clean filter.
SHEAVE DIAGRAM
Disposable return air filters are supplied with this unit. See
the unit Specification Sheet or Technical Manual for the cor-
rect size and part number. To remove the filters, remove the
filter access panel on return side of the unit.
NOTE: Do not operate sheave with flange projecting beyond
the hub end.
MAINTENANCE
CABINET FINISH MAINTENANCE
Use a fine grade automotive wax on the cabinet finish to
maintain the finish’s original high luster. This is especially
important in installations with extended periods of direct sun-
light.
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
The coil with the outside air flowing over it should be inspected
annually and cleaned as frequently as necessary to keep the
finned areas free of lint, hair and debris.
WARNING
TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER
INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTENANCE, REFER TO THIS MANUAL. FOR ADDITIONAL
ASSISTANCE OR INFORMATION, CONSULT A QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS SUPPLIER.
CONDENSER, EVAPORATOR, AND INDUCED DRAFT MOTORS
Bearings on the air circulating blower motor, condenser mo-
tor and the combustion fan motor are permanently lubricated.
No additional oiling is required.
15
LUBRICATION
UNDERCHARGE
The fan shaft bearings, the 1 to 2 HP supply fan motors the An undercharged heat pump on the heating cycle will cause
condenser fan motors and compressors are permanently lu- low discharge pressure resulting in low suction pressure and
bricated.
frost accumulation on the outdoor coil.
FUNCTIONAL PARTS
POOR “TERMINATING” SENSOR CONTACT
Refer to the unit Parts Catalog for a list of functional parts. The unit’s defrost terminating sensor must make good ther-
Parts are available from your distributor.
mal contact with the outdoor coil tubing. Poor contact may
not terminate the unit’s defrost cycle quickly enough to pre-
vent the unit from cutting out on high discharge pressure.
SERVICE
THE FOLLOWING INFORMATION IS FOR USE BY QUALI-
FIED SERVICE AGENCY ONLY: OTHERS SHOULD NOT
ATTEMPT TO SERVICE THIS EQUIPMENT.
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:
1. Solenoid not energized - In order to determine if the
solenoid is energized, touch the nut that holds the
solenoid cover in place with a screwdriver. If the nut
magnetically holds the screwdriver, the solenoid is
energized and the unit is in the cooling cycle.
2. No voltage at unit’s solenoid - Check unit voltage.
If no voltage, check wiring circuit.
Common Causes of Unsatisfactory Operation of Heat Pump
on the Heating Cycle.
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
When a heat pump is in the heating cycle, the indoor coil is
functioning as a condenser. The return air filter must always
be clean, and sufficient air volume must pass through the
indoor coil to prevent excessive discharge pressure, and high
pressure cut out.
3. Valve will not shift:
a. Undercharged - check for leaks;
b. Valve Body Damaged - Replace valve;
c. Unit Properly Charged - If it is on the heating cycle,
raise the discharge pressure by restricting airflow
through the indoor coil. If the valve does not shift,
tap it lightly on both ends with a screwdriver handle.
DO NOT TAP THE VALVE BODY. If the unit is on
the cooling cycle, raise the discharge pressure by
restricting airflow through the outdoor coil. If the valve
does not shift after the above attempts, cut the unit
off and wait until the discharge and suction pressure
equalize, and repeat above steps. If the valve does
not shift, replace it.
OUTSIDE AIR INTO RETURN DUCT
Do not introduce cold outside air into the return duct of a heat
pump installation. Do not allow air entering the indoor coil to
drop below 65° F. Air below this temperature will cause low
discharge pressure, thus low suction pressure, and exces-
sive defrost cycling resulting in low heating output. It may
also cause false defrosting.
16
APPENDIX A BLOWER PERFORMANCE TABLES
DIRECT DRIVE
STANDARD DOWN SHOT AND HORIZONTAL
CPC/H036 DIRECT DRIVE DOWN SHOT
EXTERNAL STATIC
STANDARD
SPEED TAP
PRESSURE (ESP)
in w.c.
AMPS
WATTS
RPM
CFM
0.10
0.20
1287
1233
1.66
1.63
350
342
770
815
0.30
0.40
0.50
0.60
1176
1107
1044
965
1.59
1.55
1.51
1.45
332
320
312
296
858
891
924
957
LOW
0.10
0.20
0.30
0.40
0.50
0.60
0.70
1476
1421
1334
1255
1180
1085
964
2.08
2.03
1.96
1.90
1.84
1.78
1.70
446
432
414
396
386
368
344
866
885
918
945
971
990
1023
MED
0.30
0.40
0.50
0.60
0.70
0.80
1455
1367
1277
1180
1080
922
2.31
2.25
2.16
2.09
2.02
1.90
490
476
454
438
418
386
962
984
1006
1025
1039
1067
HIGH
CPC/H036 DIRECT DRIVE HORIZONTAL
EXTERNAL STATIC
PRESSURE (ESP)
in w.c.
STANDARD
CFM
SPEED TAP
AMPS
WATTS
RPM
0.10
0.20
0.30
0.40
0.50
1296
1245
1174
1103
1013
1.67
1.60
1.56
1.52
1.46
356
334
325
316
300
764
830
861
891
935
LOW
0.10
0.20
0.30
0.40
0.50
0.60
0.70
1502
1449
1396
1335
1273
1153
996
2.10
2.06
2.02
1.97
1.91
1.83
1.71
456
444
432
418
404
380
346
836
864
891
916
940
973
1017
MED
0.20
0.30
0.40
0.50
0.60
0.70
0.80
1516
1454
1392
1273
1183
1092
920
2.36
2.31
2.26
2.17
2.09
2.02
1.90
506
496
486
458
441
424
390
940
960
979
HIGH
1006
1023
1039
1067
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P. SCFM
correction for wet coil = 4 %.
3 Ton models are shipped from the factory with speed tap set on LOW.
17
APPENDIX A BLOWER PERFORMANCE TABLES
DIRECT DRIVE
STANDARD DOWN SHOT AND HORIZONTAL
CPC/H048 DIRECT DRIVE DOWN SHOT
EXTERNAL STATIC
STANDARD
SPEED TAP
PRESSURE (ESP)
in w.c.
AMPS
WATTS
RPM
CFM
0.10
0.20
1602
1538
2.48
2.37
528
506
835
878
LOW
0.30
0.40
0.50
1474
1390
1306
2.26
2.15
2.04
484
460
436
921
950
979
0.10
0.20
0.30
0.40
0.50
0.60
0.70
1805
1704
1625
1549
1437
1301
1158
2.84
2.71
2.59
2.47
2.38
2.23
2.09
620
590
558
540
516
480
444
935
967
990
MED
1012
1030
1050
1072
0.10
0.20
0.30
0.40
0.50
0.60
1971
1828
1744
1628
1510
1402
3.22
3.03
2.94
2.80
2.69
2.57
706
664
632
606
582
552
968
998
1017
1034
1050
1067
HIGH
CPC/H048 DIRECT DRIVE HORIZONTAL
EXTERNAL STATIC
PRESSURE (ESP)
in w.c.
STANDARD
CFM
SPEED TAP
AMPS
WATTS
RPM
0.10
0.20
0.30
0.40
0.50
1622
1558
1494
1410
1326
2.54
2.43
2.32
2.21
2.10
539
517
495
471
447
809
852
895
924
953
LOW
0.10
0.20
0.30
0.40
0.50
0.60
0.70
1861
1733
1639
1564
1434
1320
1156
3.11
2.78
2.64
2.51
2.35
2.25
2.08
670
606
568
542
508
482
446
886
918
960
MED
984
1017
1039
1067
0.10
0.20
0.30
0.40
0.50
0.60
1984
1883
1770
1656
1540
1415
3.34
3.18
3.03
2.87
2.76
2.62
734
694
654
620
590
558
949
977
1001
1027
1044
1061
HIGH
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P. SCFM
correction for wet coil = 4 %.
4 Ton models are shipped from the factory with speed tap set on MED.
18
APPENDIX A BLOWER PERFORMANCE TABLES
DIRECT DRIVE
STANDARD CPC/H060 DOWN SHOT
CPC/H060 DIRECT DRIVE DOWN SHOT
EXTERNAL STATIC
SPEED
TAP
STANDARD
CFM
PRESSURE (ESP)
in w.c.
AMPS
WATTS
RPM
0.10
0.20
0.30
1334
1286
1212
1.65
1.75
1.83
180
192
202
627
665
715
0.40
0.50
0.60
0.70
0.80
0.90
1144
1077
1039
953
1.94
1.99
2.10
2.17
2.27
2.30
216
222
238
248
258
266
759
792
830
874
913
940
T1
T2
T3
T4
T5
904
825
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1512
1469
1397
1333
1285
1221
1173
1118
1049
2.12
2.24
2.31
2.44
2.54
2.59
2.72
2.77
2.90
240
254
264
282
296
304
322
328
344
682
720
759
803
836
874
913
946
984
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2053
2014
1999
1947
1897
1857
1763
1741
1669
4.27
4.39
4.60
4.68
4.79
4.87
4.99
5.06
5.19
540
558
576
588
608
620
640
650
668
869
896
929
957
989
1012
1050
1072
1105
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2137
2093
2095
2026
1980
1961
1914
1845
1766
4.95
5.07
5.19
5.28
5.40
5.49
5.58
5.70
5.69
634
652
670
682
698
720
732
742
740
913
940
962
990
1018
1039
1072
1100
1127
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2299
2233
2217
2157
2131
2060
2015
1940
1862
5.70
5.80
5.90
6.07
6.12
6.21
6.30
6.27
6.13
742
748
768
786
804
816
820
816
790
942
969
990
1018
1045
1073
1095
1111
1128
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P. SCFM
correction for wet coil = 4 %. 5 Ton models are shipped from the factory with speed tap set on T4.
19
APPENDIX A BLOWER PERFORMANCE TABLES
DIRECT DRIVE
STANDARD CPC/H060 HORIZONTAL
CPC/H060 DIRECT DRIVE HORIZONTAL
EXTERNAL STATIC
SPEED
TAP
STANDARD
CFM
PRESSURE (ESP)
in w.c.
AMPS
WATTS
RPM
0.10
0.20
0.30
1355
1281
1235
1.57
1.66
1.76
174
182
196
599
651
693
0.40
0.50
0.60
0.70
0.80
0.90
1168
1118
1049
982
1.81
1.94
2.03
2.10
2.14
2.25
202
218
232
240
246
260
726
775
819
858
885
927
T1
T2
T3
T4
T5
922
871
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1544
1490
1427
1370
1319
1274
1210
1137
1106
2.04
2.17
2.25
2.35
2.42
2.52
2.62
2.73
2.77
234
250
260
276
282
296
316
326
336
660
704
742
781
809
849
891
935
957
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2099
2068
2029
1971
1911
1876
1821
1792
1740
4.13
4.25
4.37
4.48
4.61
4.73
4.86
4.91
5.03
516
536
552
568
586
604
622
630
648
825
852
885
913
950
973
1012
1028
1067
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2233
2168
2125
2070
2050
1980
1954
1893
1852
4.76
4.91
5.02
5.14
5.27
5.41
5.47
5.60
5.70
608
628
640
660
678
696
704
724
736
863
896
924
951
979
1012
1034
1067
1089
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
2322
2294
2254
2201
2147
2117
2081
2017
1932
5.44
5.55
5.68
5.80
5.93
6.01
6.12
6.22
6.10
710
726
742
766
782
788
808
822
804
904
934
958
990
1017
1039
1060
1094
1111
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P. SCFM
correction for wet coil = 4 %.
20
APPENDIX A BLOWER PERFORMANCE TABLES
BELT DRIVE
STANDARD DOWN SHOT
CPC/H036 STANDARD BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
1424 0.30 1239 0.23
1520 0.39 1292 0.29 1073 0.22 779
1439 0.40 1192 0.30 944 0.21 619 0.12
1350 0.42 1101 0.31 864 0.22
0.14
0.6
0.8
1.0
1.2
1028 0.31
675 0.20
729
0.21
CPC/H048 STANDARD BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
2129 0.64 1795 0.47 1550 0.35
1994 0.65 1701 0.49 1433 0.36 1163 0.22
1905 0.67 1606 0.50 1326 0.36 1025 0.22
1808 0.69 1565 0.54 1216 0.36
0.6
0.8
1.0
1.2
1473 0.55 1137 0.32
1103 0.41
CPC/H060 STANDARD BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
2579 1.01 2368 0.85 2175 0.691 1961 0.55
2513 1.05 2318 0.89 2089 0.73 1906 0.59 1666 0.44
2514 1.14 2276 0.94 2045 0.77 1797 0.60 1604 0.47
2261 1.01 2017 0.82 1760 0.63
0.6
0.8
1.0
1.2
1989 0.87 1730 0.68
1695 0.72
CPC/H072 STANDARD BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
0.6
0.8
1.0
1.2
2771 1.27 2567 1.05 2421 0.88 2220 0.71
2753 1.38 2573 1.15 2382 0.95 2186 0.77 1980 0.61
2655 1.42 2548 1.24 2360 1.02 2119 0.81 1934 0.65
2470 1.30 2331 1.11 2111 0.89 1868 0.69
2296 1.18 2078 0.96 1840 0.75
2040 1.02
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P.
SCFM correction for wet coil = 4 %.
21
APPENDIX A BLOWER PERFORMANCE TABLES
BELT DRIVE
HIGH STATIC DOWN SHOT
CPC036 HIGH STATIC BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
1692 0.54 1449 0.41 1173 0.29
1678 0.58 1397 0.44 1107 0.31 854
1681 0.65 1381 0.49 1078 0.34 794 0.22
1681 0.71 1362 0.54 1062 0.39
1362 0.60 1066 0.44
0.21
1.0
1.2
1.4
1.6
1.8
1066 0.50
789 0.40
789
0.34
CPC048 HIGH STATIC BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2194 0.85 1886 0.66 1580 0.49
2113 0.86 1832 0.70 1526 0.52 1219 0.37
2182 0.98 1776 0.73 1472 0.55 1166 0.39
2053 1.00 1780 0.80 1440 0.59 1111 0.40
1759 0.86 1421 0.64 1104 0.46
1442 0.72 1095 0.50
1095 0.56
CPC/H060 HIGH STATIC BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
2331 1.01 2072 0.80
2324 1.10 2059 0.87 1791 0.66
2350 1.21 2058 0.95 1774 0.72
2367 1.33 2086 1.06 1776 0.79
2404 1.45 2111 1.17 1805 0.89
2136 1.28 1835 0.99
0.8
1.0
1.2
1.4
1.6
1.8
1868 1.10
CPC/H072 HIGH STATIC BELT DRIVE DOWN SHOT
TURNS OPEN
ESP, In
0
1
2
3
4
5
H2O
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
2793 1.64 2603 1.39 2450 1.182 2270 0.97
2903 1.87 2696 1.57 2369 1.23 2236 1.05 1987 0.82
2776 1.86 2683 1.69 2445 1.38 2196 1.12 1968 0.90
2599 1.71 2539 1.57 2310 1.29 1932 0.96
2424 1.57 2305 1.40 2032 1.11
1.0
1.2
1.4
1.6
1.8
2172 1.38 2017 1.19
1953 1.22
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P.
SCFM correction for wet coil = 4 %.
22
APPENDIX A BLOWER PERFORMANCE TABLES
BELT DRIVE
STANDARD HORIZONTAL
CPC/H036 STANDARD BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
1658 0.35 1489 0.28
1560 0.36 1339 0.28 1129 0.21
1682 0.47 1436 0.36 1196 0.27
1581 0.50 1354 0.38 1096 0.28 828 0.18
949
0.19
0.6
0.8
1.0
1.2
1266 0.39
923 0.28
994
0.28 756
0.19
CPC/H048 STANDARD BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
0.6
0.8
1.0
1.1
1943 0.52 1714 0.40
2187 0.72 1876 0.55 1566 0.40 1270 0.26
2044 0.72 1761 0.56 1444 0.40 1136 0.26
1947 0.74 1704 0.59 1335 0.40
1598 0.60 1275 0.36
1208 0.45
CPC/H060 STANDARD BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
2420 0.79 2198 0.64
2605 1.02 2358 0.84 2133 0.67 1874 0.52
2526 1.06 2300 0.88 2026 0.70 1806 0.55
2529 1.15 2252 0.93 1975 0.73 1670 0.54
2233 0.99 1943 0.78 1628 0.57
0.6
0.8
1.0
1.2
1907 0.83 1582 0.61
CPC/H072 STANDARD BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2
0.4
0.6
0.8
1.0
1.2
2784 1.30 2582 0.83 2411 0.79
2814 1.34 2620 1.19 2342 0.72 2105 0.66
2665 1.34 2583 1.19 2398 1.06 2103 0.62 1902 0.57
2689 1.38 2492 1.22 2370 1.07 2142 0.91 1816 0.51
2438 1.22 2275 1.09 2098 0.92 1883 0.78
2250 1.10 1996 0.92
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P.
SCFM correction for wet coil = 4 %.
23
APPENDIX A BLOWER PERFORMANCE TABLES
BELT DRIVE
HIGH STATIC HORIZONTAL
CPC/H036 HIGH STATIC BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
1
1742 0.50 1431 0.36
1626 0.52 1357 0.39 1078 0.27
1611 0.56 1315 0.42 1011 0.28
1.2
1.4
1.6
1.8
1605 0.62 1299 0.46
1605 0.68 1281 0.51 959 0.35
976 0.31
1281 0.57
981 0.47
981
0.41
CPC/H048 HIGH STATIC BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
1
2056 0.72 1721 0.54
1996 0.77 1662 0.57 1328 0.40
1924 0.79 1603 0.61 1270 0.43
1952 0.88 1559 0.64 1210 0.44
1888 0.92 1543 0.70 1195 0.49
1557 0.77 1180 0.54
1.2
1.4
1.6
1.8
1192 0.60
CPC/H060 HIGH STATIC BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
H2O
0
1
2
3
4
5
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
2323 0.92
2315 1.00 2009 0.77
0.8
1
2308 1.09 1992 0.84 1666 0.60
2338 1.21 1992 0.92 1646 0.66
2359 1.32 2025 1.02 1648 0.72
2404 1.45 2056 1.13 1684 0.82
2088 1.24 1722 0.92
1.2
1.4
1.6
1.8
CPC/H072 HIGH STATIC BELT DRIVE HORIZONTAL
TURNS OPEN
ESP, In
0
1
2
3
4
5
H2O
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6
0.8
1
2746 1.38 2515 1.12
2721 1.47 2494 1.21 2261 0.97
2689 1.56 2500 1.32 2255 1.06 1994 0.83
2752 1.74 2473 1.40 2252 1.15 1996 0.91
2802 1.88 2487 1.53 2286 1.27 2037 1.02
2553 1.67 2308 1.40 1997 1.08
1.2
1.4
1.6
1.8
2.0
2355 1.51 2014 1.19
2055 1.29
NOTES:
Tables represent dry coil without filter, to compensate for filter add 0.08" to measured E.S.P.
SCFM correction for wet coil = 4 %.
24
APPENDIX B ELECTRICAL DATA
ELECTRICAL DATA
OUTDOOR
FAN MOTOR
VOLTAGE
LIMITATION
COMPRESSOR
INDOOR
FAN MOTOR
INDOOR
MOTOR
VOLTAGE
(NAMEPLATE)
MODELS
APPLICATION
MIN.
MAX.
QTY
RLA
LRA
QTY
HP
RLA
HP
FLA
208/230-60-1
208/230-60-3
187
253
1
16.67
79
1
1/4
1.40
DD STD STATIC
DD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
DD STD STATIC
DD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
DD STD STATIC
DD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
BD STD STATIC
1/3
2.5
1/3
1.0
1.0
1.5
1/2
1/2
1.0
1.0
1.5
1.0
1.0
1.0
1.0
1.5
1.5
1.5
1.5
2.5
3.8
1.9
2.3
2.9
2.9
3.8
1.9
2.3
7.6
7.6
3.8
1.9
2.3
5.0
2.5
2.3
187
253
1
10.45
73.0
1
1/4
1.40
3 TON
460-60-3
575-60-3
414
518
187
506
633
253
1
1
1
5.77
3.8
38.0
37.0
109
1
1
1
1/4
1/4
1/4
0.80
0.60
1.40
208/230-60-1
19.87
208/230-60-3
187
253
1
13.14
83.1
1
1/4
1.40
4 TON
460-60-3
575-60-3
414
518
187
506
633
253
1
1
1
6.09
4.4
41.0
33.0
134
1
1
1
1/4
1/4
1/4
0.80
0.60
1.40
208/230-60-1
26.41
208/230-60-3
187
253
1
15.96 110.0
1
1/4
1.40
5 TON
460-60-3
575-60-3
414
518
187
414
518
506
633
253
506
633
1
1
1
1
1
7.76
5.71
19
52.0
38.9
123
1
1
1
1
1
1/4
1/4
1/3
1/3
1/3
0.80
0.60
1.92
1.20
0.90
208/230-60-3
460-60-3
6 TON
9.70
7.4
62.0
50.0
575-60-3
25
APPENDIX B ELECTRICAL DATA
MINIMUM AIR FLOW FOR ELECTRIC HEAT
HEATER KIT
MODEL NUMBER
UNIT
MINIMUM CFM
EHK*-10
EHK*-15
EHK*-10
EHK*-15
EHK*-18
EHK*-10
EHK*-15
EHK*-20
EHK*-10
EHK*-15
EHK*-20
EHK*-25
1250
1250
1300
1400
1400
1700
1700
1800
2100
2100
2100
2100
3 TON
4 TON
5 TON
6 TON
ATTENTION INSTALLING PERSONNEL
Use only the heater kit specified for each model as dictated by the table above.
26
APPENDIX C UNIT DIMENSIONS
47 1/2”
73 1/4”
38 13/16”*
74 1/16”
*6 Ton - 42 13/16
48 3/16”
11”
4 7/8”
17”
7 3/8”
RETURN
25”
19 7/16”
SUPPLY
12”
RETURN
DRAIN
THRU CURB
LOCATION
EMBOSS
FOR
THRU THE
BASE
5 7/8”
6 1/4”
UTILITIES
SUPPLY
HORIZONTAL DISCHARGE
27 3/8”
4 1/2”
7 1/2”
NOTE
8 3/16”
For horizontal discharge, remove the
supply and return duct covers and place
them over the vertical discharge return and
supply openings. Install with insulation
facing up, using the longer screws
47 1/2”
BOTTOM VIEW OF UNIT
VERTICAL DISCHARGE
provided in the literature package.
27
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