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92-24161-16-08

SUPERSEDES 92-24161-16-07

INSTALLATION INSTRUCTIONS

FOR UPFLOW & DOWNFLOW/HORIZONTAL HIGH
EFFICIENCY CONDENSING GAS FURNACES

(-)GRA/(-)GRJ AND (-)GTA/(-)GTJ SERIES

U.L. recognized fuel gas and CO (carbon monoxide) detectors are recommended in all
applications, and their installation should be in accordance with the manufacturer’s
recommendations and/or local laws, rules, regulations, or customs.

Содержание Gra Series

Страница 1: ...L HIGH EFFICIENCY CONDENSING GAS FURNACES GRA GRJ AND GTA GTJ SERIES U L recognized fuel gas and CO carbon monoxide detectors are recommended in all applications and their installation should be in ac...

Страница 2: ...diameter exhaust pipe ft of pipe intake air no of elbows intake air ft of pipe exhaust pipe no of elbows exhaust pipe Exhaust vent temp TERMINATIONS DIRECT VENT VERTICAL Intake 12 min above roof snow...

Страница 3: ...own to the State of California to cause cancer or birth defects such as fiberglass insulation lead in brass and combustion products from natural gas All new equipment shipped for sale in California wi...

Страница 4: ...SA B149 is available from CSA INTERNATIONAL 178 Rexdale Blvd Toronto Ontario Canada M9W 1R3 GENERAL INFORMATION FIGURE 1 UPFLOW FURNACE FIGURE 2 DOWNFLOW HORIZONTAL FURNACE ITEM ITEM NO PART NAME NO P...

Страница 5: ...ON OF THE SPACE AND POSSIBLE MIGRATION OF COMBUSTION BYPRODUCTS INCLUDING CARBON MONOXIDE INTO THE LIVING SPACE IMPROPER INSTALLATION OR INSTALLATION NOT MADE IN ACCORDANCE WITH THE CSA INTERNATIONAL...

Страница 6: ...TION RETURN AIR TEMPERATURE MAINTAINED BETWEEN 55 F 13 C AND 80 F 27 C AND CLEAN FURNACE DUCT WORK AND COMPONENTS UPON SUBSTANTIAL COMPLETION OF THE CONSTRUCTION PROCESS AND VERIFY FURNACE OPERATING C...

Страница 7: ...ERS OR BOILERS ALL JOINTS SEAMS AND OPENINGS IN THE EQUIPMENT AND DUCT MUST ALSO BE SEALED TO PREVENT DEPRESSURIZATION OF THE SPACE AND POSSIBLE MIGRATION OF COMBUSTION BYPRODUCTS INCLUDING CARBON MON...

Страница 8: ...with this furnace a be sure the air passes over the heat exchanger before passing over the cooling coil The cooled air passing over the warm ambient air inside the heat exchanger tubes can cause cond...

Страница 9: ...or crawl space installation it may be installed on combustible wood flooring or by using support brackets See Figure 5 5 IMPORTANT If installing in a utility room be sure the door is wide enough to a...

Страница 10: ...32 15 5 8 2 15 13 25 32 0 0 0 1 2 0 117 07 17 1 2 16 11 32 15 5 8 2 15 13 25 32 0 0 0 1 2 0 123 09 21 19 27 32 19 1 8 2 18 1 2 17 9 32 0 0 0 1 2 0 148 10 21 19 27 32 19 1 8 2 18 1 2 17 9 32 0 0 0 1 2...

Страница 11: ...0 117 07 17 1 2 16 11 32 15 5 8 2 16 5 8 13 7 8 0 0 0 1 2 0 123 09 21 19 11 32 19 3 16 2 20 1 8 17 3 8 0 0 0 1 2 0 148 10 21 19 11 32 19 3 16 2 20 1 8 17 3 8 0 0 0 1 2 0 152 12 24 1 2 23 11 32 22 5 8...

Страница 12: ...16 5 8 13 7 8 0 0 0 1 2 0 123 07 21 19 27 32 19 3 16 2 20 1 8 17 3 8 0 0 0 1 2 0 123 09 21 19 27 32 19 3 16 2 20 1 8 17 3 8 0 0 0 1 2 0 148 10 21 19 27 32 19 3 16 2 20 1 8 17 3 8 0 0 0 1 2 0 152 12 2...

Страница 13: ...osition the unit to minimize long runs of duct or runs of duct with many turns and elbows 2 Open the return air compartment UPFLOW FURNACE A SOLID METAL BASE PLATE MUST BE INSTALLED IN THE FURNACE BOT...

Страница 14: ...s tripped it must be manually reset VENTING AND COMBUSTION AIR PIPING WARNING 4 Connect the furnace to the supply air plenum 5 Connect the return air ducting to the return air opening at the top of th...

Страница 15: ...on while the other appliances remaining connected to the common vent system are not in operation Test the operation of each appliance individually by the following method 1 Permanently seal any unused...

Страница 16: ...f the flue products and are highly corrosive after they condense ALL FURNACE INSTALLATIONS MUST COMPLY WITH THE NATIONAL FUEL GAS CODE AND LOCAL CODES TO PROVIDE ADEQUATE COMBUSTION AND VENTILATION AI...

Страница 17: ...Area Round Pipe Input Each Opening Size 45 000 11 25 square inches 4 60 000 15 00 square inches 5 75 000 18 75 square inches 5 90 000 22 50 square inches 6 105 000 26 25 square inches 6 120 000 30 00...

Страница 18: ...r spaces crawl or attic that freely communicate with the outdoors and shall have a minimum free area of a 1 square inch for each 3 000 BTUH of the total input rating of all equipment located in the en...

Страница 19: ...minimum clearances to combustibles are maintained between the PVC pipe and other pipes 5 All vent runs through unconditioned spaces where below freezing temperatures are expected should be insulated...

Страница 20: ...R IMPROPER LOCATION OR INSTALLATION CAN CAUSE STRUCTURAL OR EXTERIOR FINISH DAMAGE TO THE BUILDING Non direct venting location requirements are slightly different in some cases than direct venting Ins...

Страница 21: ...21 FIGURE 17 OTHER THAN DIRECT VENT TERMINAL CLEARANCES Natural Gas and Propane Installation Code National Fuel Gas Code Canadian Installations US Installations Canadian Installations US Installations...

Страница 22: ...m vent pipe length is 5 feet Size the exhaust and combustion air intake pipes as specified in Table 2 This table lists the maximum allow able length in feet of the exhaust and combustion air intake pi...

Страница 23: ...d horizontal intake air termination for all models is a 2 in PVC coupling with a wind deflector vane provided attached Cut a 21 4 in length of 2 in PVC pipe Connect this pipe and another 2 in PVC coup...

Страница 24: ...ternate horizontal direct vent termination kits RXGY D02 1 2 in tee with reducer assembly 2 1 2 in PVC 6 in dia trap 3 PVC vane 4 2 in PVC elbow 5 11 2 in PVC nipple with coupling 6 PVC strap 7 vent t...

Страница 25: ...UPPLIED E PVC RAINCAP E B A C D E B A C D CONCENTRIC TERMINATIONS VERTICAL HORIZONTAL CONCENTRIC VENT KIT NO RXGY E03 This kit is for vertical horizontal intake air vent runs and may be installed thro...

Страница 26: ...THE LAST 12 INCHES WITH 11 2 PVC PIPE ON 45 000 THROUGH 75 000 BTUH MODELS SEE DETAIL A 6 30 MAXIMUM EXPOSED VENT LENGTH PITCHED ROOF INSTALLATIONS NOTES 1 SUPPORT HORIZONTAL PIPE EVERY FOUR FEET 2 W...

Страница 27: ...27 FIGURE 22 DIRECT VENT TERMINAL CLEARANCES Natural Gas and Propane Installation Code National Fuel Gas Code Canadian Installations US Installations Canadian Installations US Installations...

Страница 28: ...bustion air inlet minimum of 3 feet from the vent of any other gas or fuel burning appliance or clothes dryer to prevent recirculation of the flue gases into the furnace combustion air inlet The only...

Страница 29: ...PERMITTED See Figures 24 and 25 for positioning of the terminations When more than two furnaces are to be vented there must be at least 4 feet between the first two furnaces and the third etc FIGURE...

Страница 30: ...rations in wall To prevent possibility of condensate freeze up or recirculation do not install vent kits one above the other NOTE The vent illustration in Figure 27 can be used for Non direct vent ter...

Страница 31: ...pe fitting extending through the right side of the furnace top cover This opening has a pro tective cap which should be removed just prior to installing the exhaust pipe When 2 in pipe is used con nec...

Страница 32: ...drain or condensate pump IMPORTANT If installing the unit over a finished ceiling or living area be certain to install an auxiliary condensate drain pan under the entire unit extending out under the...

Страница 33: ...rainage hoses from the trap Remove the trap from its mounting bracket rotate it 180 degrees and mount in place with the drainage elbow pointing to the left Reattach the drain hoses Remove the plug fro...

Страница 34: ...plastic plugs on either side of the trap outlet hole and discard 4 Remove the L shaped clear vinyl drain tube from the top of the existing trap Do not disconnect the short end from the furnace collect...

Страница 35: ...IGHT POSITION REMOVAL OF EXISTING DOWNFLOW CONDENSATE TRAP FIGURE 36 HORIZONTAL POSITION CONDENSATE TRAP INSTALLATION FOR HORIZONTAL OPERATION I534 CONDENSATE TRAP CONVERSION FROM DOWNFLOW TO HORIZONT...

Страница 36: ...line directly from the meter to the furnace Consult the local gas company for the location of the manual main shut off valve The gas line and manual gas valve must be adequate in size to prevent undue...

Страница 37: ...tion IMPORTANT ENSURE that the furnace gas control valve not be subjected to high gas line supply pressures DISCONNECT the furnace and its individual shut off valve from the gas supply piping during a...

Страница 38: ...ts that use 10 of water column at the orifice This difference requires a deviation from the NFGC orifice size recommendations The Sea Level input should still be reduced by 4 per thousand ft and the o...

Страница 39: ...the same gas line as the furnace 4 Note or adjust the line gas pressure to give A 5 10 5 w c for natural gas B 11 13 w c for LP gas 5 Shut off the gas at the manual gas valve and remove the U Tube ma...

Страница 40: ...42 MANIFOLD PRESSURE READING FIGURE 43 UPFLOW GROUNDING CONNECTIONS JUNCTION BOX CONDENSATE TRAP CONTROL IS GROUNDED WHEN ATTACHED TO BLOWER LOW VOLTAGE TERMINALS IFC MOUNTING PLATE BLOWER COMPARTMEN...

Страница 41: ...ncy and phase corresponds to that specified on the furnace rating plate For single furnace application maximum over current protection is 15 amperes Use a separate fused branch electrical circuit cont...

Страница 42: ...rmostat b The 24 VAC supply to both control boards must be in phase with each other c Connect the C W and TWIN terminals to counterparts on each control d Both control boards must have switch 3 in the...

Страница 43: ...43 FIGURE 46 UT Electronic Controls 1028 928 CONTROL BOARD TWINNING CONNECTION SINGLE STAGE OPERATION Control Board 1 Control Board 2...

Страница 44: ...44 FIGURE 47 UT ELECTRONIC CONTROLS 1028 928 CONTROL BOARD TWINNING CONNECTION TWO STAGE OPERATION Control Board 1 Control Board 2...

Страница 45: ...ESSARY AND HOW TO DETERMINE THE NEW ORIFICE SIZE IN CANADA AS AN ALTERNATE TO ADJUSTING THE BURNER ORIFICE SIZE THE MANIFOLD GAS PRESSURE MAY BE ADJUSTED THIS METHOD IS COVERED LATER IN THIS SECTION T...

Страница 46: ...12 600 12 000 11 400 10 800 10 200 9 600 All calculations are performed by using the first three columns of information only Before beginning any calculations determine the individual burner Btu size...

Страница 47: ...W C ALTITUDE INPUT OUTPUT ORIFICE SIZE MANIFOLD PRESSURE 0 2000 45 000 60 000 75 000 90 000 105 000 120 000 40 500 54 000 67 500 81 000 94 500 108 000 1 15mm 10 W C 2001 4500 40 500 54 000 67 500 81 0...

Страница 48: ...rgized 4 If flame is not sensed during the 8th second after the gas valve opens the gas valve closes and the igniter de energizes 5 After a 10 second post purge the inducer stops and the control verif...

Страница 49: ...INPUT RATE The furnace is shipped from the factory with 50 orifices They are sized for natural gas having a heating value of 1075 BTU cu ft and a specific gravity of 60 Since heating values vary geo g...

Страница 50: ...The difference is the temperature rise 5 Compare the measured temperature rise to the approved temperature rise range listed on the furnace name plate See Figure 50 If the measured temperature rise is...

Страница 51: ...390 1370 1300 1255 HIGH 1705 1665 1615 1570 1540 1475 1400 GTA 07 12 X 7 1 2 3 4 LOW 1185 1160 1140 1115 1095 1065 1040 M LO 1405 1375 1350 1310 1270 1235 1195 M HI 1595 1560 1525 1480 1440 1380 1325...

Страница 52: ...1210 1180 1150 1120 1075 1035 MED 1490 1465 1445 1405 1375 1315 1255 HIGH 1720 1670 1620 1600 1580 1520 1460 GTJ 09 12 X 11 1 2 LOW 1155 1125 1100 1080 1060 1000 940 MED 1420 1400 1380 1365 1350 1260...

Страница 53: ...yback jumper H C to FAN and do not connect Y to the integrated furnace control Do not connect anything to H or C GAS FURNACE DIRECT DRIVE INSTRUCTIONS FOR CHANGING BLOWER SPEED DISCONNECT THE ELECTRIC...

Страница 54: ...he filters clean at all times Vacuum dirt from filter wash with detergent and water air dry thoroughly and reinstall NOTE Some filters must be resized to fit certain units and applications See Table 1...

Страница 55: ...ANGLE SEE ANGLE DETAIL ATTACH WITH SHEET METAL SCREWS 2 REQ D ANGLE DETAIL CUT OUT AND DRILL DETAIL ROD FILTER SUPPORT ANGLE ASSEMBLY FILTER AND ROD ASSEMBLY FILTER ROD SUPPORT ANGLE FILTER SUPPORT A...

Страница 56: ...irty filters can restrict airflow The motor depends upon sufficient air flowing across and through it to keep from overheating SYSTEM OPERATION INFORMATION Advise The Customer 1 Keep the air filters c...

Страница 57: ...during ignition trial If yes go to F Did a limit open during ignition trial If yes go to D Check line voltage between HEAT and NEUTRAL on IFC Check wires connections and continuity between IFC and IB...

Страница 58: ...58 FIGURE 57 GRA MODELS WITH UT ELECTRONIC CONTROLS 1028 928 SPARK IGNITION...

Страница 59: ...59 FIGURE 58 GTA MODELS WITH UT ELECTRONIC CONTROLS 1028 928 SPARK IGNITION...

Страница 60: ...60 FIGURE 59 GRJ MODELS WITH UT ELECTRONIC CONTROLS 1012 925 OR INVENSYS CLIMATE CONTROLS ICC H1MC7 01 CONTROL BOARD HSI...

Страница 61: ...61 FIGURE 60 GTJ MODELS WITH UT ELECTRONIC CONTROLS 1012 925 OR INVENSYS CLIMATE CONTROLS ICC H1MC7 01 CONTROL BOARD HSI...

Страница 62: ...62...

Страница 63: ...63...

Страница 64: ...64 CM 0407...

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