User's Manual

ManualsBrandsLennox International Inc. ManualsHeating SystemLennox International Inc. Lennox International Inc. Heating System 15GCSX

06/11

*2P0611*

506701−01

*P506701-01*

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

E 2010 Lennox Industries Inc.

Dallas, Texas, USA

WARNING

Improper installation, adjustment, alteration, service or

maintenance can cause personal injury, loss of life, or

damage to property.

Installation and service must be performed by a

licensed professional installer (or equivalent),

service agency or the gas supplier.

INSTALLATION

INSTRUCTIONS

15GCSX SERIES UNITS

GAS PACKAGED UNITS (2−5 TONS)

506701−01

(38152A086)

06/11

Supersedes 03/11

Table of Contents

Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Arrangement 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shipping & Packing List 3. . . . . . . . . . . . . . . . . . . . . . . . .

General 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Information 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Location Selection 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rigging & Setting Unit 5. . . . . . . . . . . . . . . . . . . . . . . . . .

Clearances 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing Vent Hood 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Existing Common Vent Systems 6. . . . . . . . . . . . . . . . . .

Condensate Drain 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Filters 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply & Return Connections 7. . . . . . . . . . . . . . . . . . . .

Compressors 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gas Supply and Piping 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Blower Control 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cooling Start−Up 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heating Start−Up 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unit Controls 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Condenser Fan Clearances 19. . . . . . . . . . . . . . . . . . . . .

Maintenance 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Planned Service 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Parts & Accessories 22. . . . . . . . . . . . . . . . . . . . .

WHAT TO DO IF YOU SMELL GAS:

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other ap-

pliance.

Installation and service must be

performed by a qualified installer,

service agency or the gas supplier.

D Do not try to light any appliance.

D Do not touch any electrical switch; do not

use any phone in your building.

D Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

D If you cannot reach your gas supplier, call

the fire department.

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings ex-

actly could result in serious injury,

death, or property damage.

WARNING

D Leave the building immediately.

Litho U.S.A.

Summary of content (24 pages)

PAGE 1
INSTALLATION INSTRUCTIONS E 2010 Lennox Industries Inc. Dallas, Texas, USA 15GCSX SERIES UNITS GAS PACKAGED UNITS (2−5 TONS) 506701−01 (38152A086) 06/11 Supersedes 03/11 Litho U.S.A. Table of Contents RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE WARNING Improper installation, adjustment, alteration, service or maintenance can cause personal injury, loss of life, or damage to property.
PAGE 2
15GCSX Unit Dimensions − inches (mm) F G 2−1/2 (64) AA 2−1/2 (64) 2−3/4 (70) D E E DOWNFLOW RETURN AIR OPENING BB Model Number DOWNFLOW SUPPLY AIR OPENING D DD AA lbs. BB lbs. CC lbs. DD lbs. 15GCSXAV−24 74 94 125 97 15.5 28.5 15GCSXAV−30 74 94 125 97 15.5 28.5 15GCSXAV−36 84 101 126 105 16 29.5 15GCSXAV−42 108 136 176 140 20 33 15GCSX(A,B)V−48 112 137 177 144 20 33.5 15GCSX(A,B)V−60 117 143 184 151 20 33.5 C EE Center Of Gravity EE FF in. in.
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Parts Arrangement PureAir® Air Purification System (Optional) Gas Valve Ignition Control Board Condenser Coil Evaporator Coil Control Box Shipping & Packing List 1 − Assembled gas package unit 1 − Vent hood assembly with screen and screws As soon as the unit is received, it should be inspected for possible damage during transit. If you find any damage, immediately contact the last carrier. tested.
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WARNING Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance, or repair will expose you to fiberglass wool dust. Breathing this may cause lung cancer. (Fiberglass wool is known to the State of California to cause cancer.) Fiberglass wool may also cause respiratory, skin, and eye irritation. To reduce exposure to this substance or for further information, consult material safety data sheets available from address shown below, or contact your supervisor.
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− Do not locate the unit where the combustion air supply will be exposed to any corrosive substance, including the following: Permanent wave solutions, Chlorinated waxes or cleaners, Chlorine−based swimming pool chemicals, Water−softening chemicals, De−icing salts or chemicals, Carbon tetrachloride, Halogen−type refrigerants, Cleaning solvents (e.g., perchloroethylene), Printing inks, paint removers, varnishes, etc.
PAGE 6
freeze on the walls or on overhangs (under eaves). The vent outlet should not discharge flue products on a sidewalk, patio or other walkway where the condensate could cause the surface to become slippery. Do not install the unit so that the products of combustion will be allowed to accumulate within a confined space and recirculate.
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appropriate Category 1 Natural Gas and Propane appliances venting sizing tables in the current standards of the CSA B149 Natural Gas and Propane Installation Codes in Canada.
PAGE 8
Condensate Drain The 15GCSX unit is equipped with a 3/4 inch FPT coupling for condensate line connection. Plumbing must conform to local codes. Use a sealing compound on male pipe threads. The drain line must be properly trapped and routed to a suitable drain. See figure 5 for proper drain arrangement. The drain line must pitch to an open drain or pump a minimum of 1 inch per 10 feet to prevent clogging of the line.
PAGE 9
Table 1 Unit Filter Size CAUTION Unit Model Filter Size Filter Quantity −24, −30, −36 −42, −48, −60 20 in. X 25 in. 16 in. X 25 in. 1 2 When fastening duct system to side duct flanges on unit, insert screws through duct flanges only. Do not insert screws through casing. Outdoor duct must be insulated and waterproofed. The Healthy Climate® PureAir® air purification system (PCO20−28) may be used with 15GCSX units installed in horizontal air discharge applications only.
PAGE 10
Compressors Units are shipped with the compressor mountings factory−adjusted and ready for operation. CAUTION gas connection. For natural gas unit, supply pressure at the unit gas connection must be a minimum of 5 inches w.c. and a maximum of 10.5 w.c. For LP/propane gas units, supply pressure at the unit gas connection must be a minimum of 11 inches w.c. and a maximum of 13.0 inches w.c. Table 3 Gas Pipe Capacity−FT3 / HR Do not loosen compressor mounting bolts.
PAGE 11
NOTE − There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a 1/2 inch pipe connection at the gas valve. Drip Leg Installation field provided 1/8 in. pressure tap Gas piping recommendations: ground joint union manual main shut−off valve unit CAUTION If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall be installed at the gas valve and must extend outside the cabinet.
PAGE 12
Electrical All wiring should be done in accordance with the current National Electric Code ANSI/NFPA No. 70 in the United States. In Canada, wiring must be done in accordance with the current CSA C22.2 Part 1. Local codes may take precedence. Use wiring with a temperature limitation of 75_C min.; run the 208 or 230 volt, 60 hertz electric power supply through a fused disconnect switch to control box of unit and connect as shown in the wiring diagram located on the inside of the control access panel.
PAGE 13
Page 13 Typical Wiring Diagram 15GCSX Series Gas Packaged Units
PAGE 14
Blower Control (A54) BLOWER CONTROL (A54) 16−PIN PLUG (BOARD TO MOTOR) ADJUST SELECTOR PINS (Setting affects both heating and cooling modes) HEATING SPEED SELECTOR PINS DIAGNOSTIC LED COOLING SPEED SELECTOR PINS Figure 12 ! WARNING Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies.
PAGE 15
COOL The COOL jumper is used to determine the CFM during cooling operation. This jumper selection is activated for cooling when Y1 is energized. The blower motor runs at 80 percent of the selected air flow for the first 7−1/2 minutes of each cooling demand. This feature allows for greater humidity removal and saves energy. In the cooling mode, the blower control delays blower operation for 5 seconds after the compressor starts.
PAGE 16
System Performance Cooling Start−Up The cooling section is a complete factory package utilizing an air−cooled condenser. The system is factory−charged with HFC−410A refrigerant. The compressor is hermetically sealed, internally sprung and base−mounted with rubber−insolated hold−down bolts. Pre−Start Check List: 1 − Make sure refrigerant lines do not rub against the cabinet or each other. 2 − Inspect all electrical wiring, both factory− and field−installed, for loose connections.
PAGE 17
Table 8 Normal Operating Pressures 80F db / 67F wb RETURN AIR UNIT PRESSURE 15GCSX−24 15GCSX−30 15GCSX−36 Suction 15GCSX−42 15GCSX−48 15GCSX−60 15GCSX−24 15GCSX−30 15GCSX−36 Liquid 15GCSX−42 15GCSX−48 15GCSX−60 65 142 134 143 140 133 134 219 232 244 225 236 246 70 143 136 144 140 134 136 242 255 268 247 256 269 75 144 138 146 140 136 138 264 277 292 269 277 291 Air Temperature Entering Outdoor Coil (F) 80 82 85 90 95 100 146 146 147 148 149 150 140 141 142 144 146 148 147 148 149 151 152 155 141 141
PAGE 18
For Natural Gas: Check the furnace rate by observing gas meter, making sure all other gas appliances are turned off. The test hand on the meter should be timed for at least one revolution. Note the number of seconds for one revolution. To Shut Down: 1 − Turn off electric power to unit. 2 − Turn the gas valve knob to the OFF position.
PAGE 19
circulating blower remain energized. If the thermostat signals a requirement for second−stage heat (W2), the ignition control initiates high heat operation. When a signal for second stage heat is received by the ignition control, the control energizes the second−stage gas valve and high−speed combustion air inducer until the demand is satisfied.
PAGE 20
Ignition Control Figure 14 Ignition Control LED Codes The ignition control LED flashes codes which indicate normal or abnormal operations: Slow Flash −− Normal operation, no call for heat. One flash per second. Fast Flash −− Normal operation, call for heat. Two flashes per second. Steady Off −− Internal failure or no power. (Micro−controller failure; self−check.) Steady On −− Internal control failure. (Micro−controller failure; self−check). Code 2 −− System lockout −− Failed to detect or sustain flame.
PAGE 21
System Operation Monitor (LSOM) The system operation monitor (A132) detects the most common fault conditions in the air conditioning system. When an abnormal condition is detected, the module communicates the specific condition through its ALERT and TRIP lights. The module is capable of detecting both mechanical and electrical system problems. See figure 15 for the system operation monitor.
PAGE 22
Table 10 System Operation Monitor LED Troubleshooting Codes Status LED Condition Status LED Description Status LED Troubleshooting Information Green Power" LED ON Module has power 24VAC control power is present at the module terminal. Green Power" LED OFF Module not powering up Determine/verify that both Y and C module terminals are connected and voltage is present at both terminals with a thermostat demand for cooling (Y). Red Trip" LED ON System and compressor check out OK 1. 2. 3.
PAGE 23
System Operation Monitor LED Troubleshooting Codes Status LED Condition Status LED Description Status LED Troubleshooting Information *Flash code number corresponds to a number of LED flashes, followed by a pause, and then repeated. Reset ALERT flash code by removing 24VAC power from monitor; last code will display for 1 minute after monitor is powered on. NOTE − Code 8 is not used. Maintenance The GCSX15 unit should be inspected annually by a qualified service technician to ensure proper operation.
PAGE 24
Repair Parts & Accessories The following repair parts are available from your local dealer. When ordering parts, include the complete model number and serial number which are printed on the unit rating plate. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.