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INSTALLATION INSTRUCTIONS FOR
COMMERCIAL HEATING & COOLING
3 TON - 6 TON PACKAGE GAS UNIT
CPG SERIES
®
US
C
This Forced Air Central Unit Design Complies With
Requirements Embodied in The American National
Standard / National Standard of Canada Shown
Below.
ANSI Z21.47•CSA-2.3 Central Furnaces
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 inst
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REPLACEMENT PARTS Index Replacement Parts ........................................................ 2 ORDERING PARTS Safety Instructions ........................................................ 2 When reporting shortages or damages, or ordering repair parts, give the complete unit model and serial numbers General Information ...................................................... 3 as stamped on the unit’s nameplate. Unit Location ................................................................. 4
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WARNING WARNING CARBON MONOXIDE POISONING DO NOT CONNECT TO OR USE ANY DEVICE THAT IS NOT DESIGN HAZARD CERTIFIED BY GOODMAN FOR USE WITH THIS UNIT. SERIOUS PROPERTY DAMAGE, PERSONAL INJURY, REDUCED UNIT FAILURE TO KEEP THIS COMPARTMENT CLOSED PERFORMANCE AND/OR HAZARDOUS CONDITIONS MAY RESULT EXCEPT WHEN SERVICING COULD RESULT IN CARBON MONOXIDE POISONING OR DEATH. FROM THE USE OF SUCH NON-APPROVED DEVICES. THIS COMPARMENT MUST BE CLOSED EXCEPT WHEN SERVICING WARNING AVERTISSEMENT THIS PRODU
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responsibility for equipment installed in violation of any code ALL INSTALLATIONS: or regulation. The mechanical installation of the packaged roof top units consists of making final connections between NOTE: Appliance is shipped from factory for vertical duct the unit and building services; supply and return duct con- application. nections; and drain connections (if required). The internal Proper installation of the unit ensures trouble-free operation. systems of the unit are completely factory
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Full perimeter roof curbs are available from the factory and • The base should also be located where no runoff of are shipped unassembled. Field assembly, squaring, level- water from higher ground can collect in the unit. ing and mounting on the roof structure are the responsibility ROOF TOP INSTALLATIONS ONLY: of the installing contractor. All required hardware necessary for the assembly of the sheet metal curb is included in the • To avoid possible property damage or personal injury, curb ac
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Adequate clearance around the unit should be kept for safety, CAUTION service, maintenance, and proper unit operation. A total clear- ance of 75” on the main control panel side of the unit is rec- IF PROTRUSIONS EXIST, DO NO ATTEMPT TO SET UNIT ON CURB. ommended to facilitate possible fan shaft, coil, electric heat and gas furnace removal. A clearance of 48” is recommended on all other sides of the unit to facilitate possible compressor ROOF TOP DUCT CONNECTIONS removal, to allow service acces
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RIGGING DETAILS WARNING O PREVENT PROPERTY DAMAGE, THE UNIT SHOULD REMAIN IN AN UPRIGHT T 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 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. Provisions for forks have been included in the unit base frame
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A C RETURN Y CONDENSER COIL EVAPORATOR COIL CG SUPPLY COMPRESSOR B D X Corner & Center of Gravity Locations Shipping Operating Corner Weights ( lbs ) X Y Model Weight Weight (in) (in) ABC D (lbs) (lbs) CPG036045* 37 30 550 525 100 165 100 165 CPG036090* 37 30 560 535 100 170 100 170 CPG048090* 37 30 600 575 110 180 110 180 CPG048115* 37 30 605 580 110 180 110 180 CPG060090* 37 30 645 620 115 190 120 195 CPG060140* 37 30 655 630 120 195 120 195 CPG072140* 37 30 715 690 130 215 130 215 * We
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ELECTRICAL WIRING Electrical Code. If long wires are required, it may be neces- sary to increase the wire size to prevent excessive voltage drop. Wires should be sized for a maximum of 3% voltage WARNING drop. HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR CAUTION INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY TO AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, USE DAMAGE, PERSONAL INJURY OR DEATH. ONLY COPPER CONDUCTORS. WARNI
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Areas Without Convenience Outlet 2. Locate thermostat or remote sensor in the conditioned space where it will sense average temperature. Do It is recommended that an independant 115V power source not locate the device where it may be directly exposed be brought to the vicinity of the roof top unit for portable lights to supply air, sunlight or other sources of heat. Follow and tools used by the service mechanic. installation instructions packaged with the thermostat. 3. Use #18 AWG wire for 24V
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(LP) gas is permitted with the use of the factory authorized 4. Install a drip leg to trap dirt and moisture before it can conversion kit (see the unit Technical Manual for the appro- enter the gas valve. The drip leg must be a minimum priate kit). For High Altitude derates, refer to the latest edition of three inches long. of the National Fuel Gas Code NFPA 54/ANSI Z223.1. 5. Use two pipe wrenches when making connection to the gas valve to keep it from turning. INLET GAS PRESSURE 6. Install a m
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GAS PIPING CHECKS 1. Vaporization rate, which depends on (a) temperature of the liquid, and (b) wetted surface area of the container or containers. CAUTION 2. Proper pressure regulation. TO PREVENT PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, THE 3. Pressure drop in lines between regulators, and FOLLOWING INSTRUCTIONS MUST BE PERFORMED REGARDING GAS between second stage regulator and the appliance. CONNECTIONS AND PRESSURE TESTING: Pipe size required will depend on length of pipe run • THE
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NOTE: The gas connection size at the unit does NOT CIRCULATING AIR AND FILTERS establish the size of the supply line. 3. These units are designed for either natural or propane DUCTWORK (LP) gas and are specifically constructed at the factory The supply duct should be provided with an access panel for only one of these fuels. The fuels are NOT large enough to inspect the air chamber downstream of the interchangeable. However, the furnace can be heat exchanger. A cover should be tightly attached
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TOOLS REQUIRED STARTUP, ADJUSTMENTS, AND CHECKS Refrigeration gauge and manifold Voltmeter WARNING Clamp-on ammeter Ohmmeter HIGH VOLTAGE! TO AVOID PERSONAL INJURY OR DEATH DUE TO Test lead ELECTRICAL SHOCK, BOND THE FRAME OF THIS UNIT TO (Minimum #16 AWG with insulated alligator clips) THE BUILDING ELECTRICAL GROUND BY USE OF THE GROUNDING TERMINAL PROVIDED OR OTHER Manometer for verifying gas pressure 0 to 20" w.c. ACCEPTABLE MEANS. DISCONNECT ALL POWER BEFORE Air temperature measuring d
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System Voltage - That nominal voltage value assigned to a SET EVAPORATOR FAN RPM circuit or system for the purpose of designating its voltage Actual RPM’s must be set and verified with a tachometer or class. strobe light. Refer to Appendices A and B for basic unit fan RPM. Refer also to “Airflow” section of this manual. With Nameplate Voltage - That voltage assigned to a piece of disconnect switch open, disconnect thermostat wires from equipment for the purpose of designating its voltage class
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EVAPORATOR FAN ROTATION CHECK (THREE PHASE MODELS If the power to the unit is interrupted during the heating cycle, ONLY) it may cause the secondary limit to trip. Once the blower com- partment temperature drops below the limit reset tempera- Check that fan rotates clockwise when viewed from the drive ture, the limit will automatically reset. The unit will restart side of unit and in accordance with rotation arrow shown on after one (1) hour. blower housing. If it does not, reverse any two incom
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Manifold Pressure Check 4. Relight all other appliances turned off in step 1. Be sure all pilot burners are operating. The gas valve has a tapped opening to facilitate measure- ment of the manifold pressure. A “U” Tube manometer hav- Main Burner Flame Check ing a scale range from 0 to 12 inches of water should be Flames should be stable, soft and blue (dust may cause or- used for this measurement. The manifold pressure must be ange tips but they must not be yellow) and extending directly measure
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4. The belt drive blower contactor closes its contacts L1, 7. Disconnecting the jumper wire between R and Y and L2 and L3 to T1, T2 and T3 to provide power to the between R and G on TB1 terminal block will simulate supply fan motor. a satisfied thermostat. The compressor will cycle off and IIC (pin 12) will initiate its time delay cycle. The PSC Motor compressor and the supply fan will cycle off. Adjust the CFM for the unit by changing the speed 8. After a time delay of approximately 3 minutes,
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supply pressure tap is provided on the upstream side of the 3. Remove the heat exchanger door on the side of the gas valve. A manifold pressure tap is provided on the gas unit by removing screws. valve. The normal manifold pressure for full input is 3.5" w.c. 4. Move the gas control valve switch to the OFF position. on natural gas and 9.5" w.c. for propane gas. Low fire natu- Do not force. ral gas 2.0” w.c., 6.0” low fire propane gas. Minimum gas 5. Close manual gas shutoff valve external to t
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External Lockout 9. Integrated ignition control will close its normally open contacts after a delay of approximately 30 seconds. An external lockout occurs if the integrated ignition control This action energizes contactor BC and starts the determines that a measurable combustion cannot be estab- supply fan motor. Operation of the supply fan lished within three (3) consecutive ignition attempts. If flame circulates air across the heat exchanger and delivers is not established within the seven (
