Hamilton FG9-DH Installation Instruction Download Page 17

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035-17477-002 Rev. D (1202)

Unitary Products Group

FIGURE 18 :

Horizontal Termination Configuration with 12”
Minimum Clearance

FIGURE 19 :

Horizontal Termination Raised
Configuration for Additional Clearance

FIGURE 20 :

Horizontal Termination Configuration with Hori-
zontal Extension

OVERHANG

12” MINIMUM

VENT

MAINTAIN 12” CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOWLEVEL
OR GRADE WHICHEVER IS GREATER

12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT

COMBUSTION AIR

90°

OVERHANG

12” MINIMUM

VENT

MAINTAIN 12” CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOWLEVEL
OR GRADE WHICHEVER IS GREATER

12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT

COMBUSTION AIR

90°

OVERHANG

12” MINIMUM

VENT

MAINTAIN 12” CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOWLEVEL
OR GRADE WHICHEVER IS GREATER

12 SEPARATION BETWEEN
BOTTOM OF COMBUSTION AIR
AND BOTTOM OF VENT

COMBUSTION AIR

90°

18” MAX.

FIGURE 21 :

Vertical Termination

FIGURE 22 :

Double Sidewall Termination

FIGURE 23 :

Double Rooftop Termination

MAINTAIN 12” MINIMUM
CLEARANCEABOVE HIGHEST
ANTICIPATED SNOWLEVEL.
MAXIMUM OF 24” ABOVE ROOF.

VENT

COMBUSTION AIR

12” VERTICAL SEPARATION
BETWEEN COMBUSTION
AIR AND VENT

VENT

COMBUSTION AIR

2”

6”

Summary of Contents for FG9-DH

Page 1: ...AND ADJUSTMENTS 26 FURNACE ACCESSORIES 30 OPERATION AND MAINTENANCE 33 TROUBLESHOOTING 36 INSTALLATION INSTRUCTION CAUTION READ ALL SAFETY GUIDES BEFORE YOU START TO INSTALL YOUR FURNACE SAVE THIS MANUAL HIGH EFFICIENCY GAS FIRED FURNACES TUBULAR HEAT EXCHANGER SERIES MODELS P UR G9T UP FG9 UP Upflow 40 140 MBH INPUT MODELS P DH G9T DH FG9 DH Downflow Horizontal 40 120 MBH INPUT 035 17477 002 Rev ...

Page 2: ...ews or bolts which may have loos ened in transit There are no shipping or spacer brackets which need to be removed NOTES CAUTIONS WARNINGS The installer should pay particular attention to the words NOTE CAUTION and WARNING NOTES are intended to clarify or make the installation easier CAUTIONS are given to prevent equipment damage WARNINGS are given to alert the installer that personal injury and o...

Page 3: ... the National Fuel Gas Code ANSI Z223 1 or CAN CGA B149 1 or 2 Installation Code latest editions local plumbing or waste water codes and other applicable codes Downflow horizontal models when installed in a downflow configuration are AGA CGA listed for application into a manu factured mobile home Upflow models or horizontal applications are not approved for mobile homes CLEARANCES FOR ACCESS Ample...

Page 4: ...amount of air intake vent piping and elbows will be required 2 As centralized with the air distribution as possible 3 Where adequate combustion air will be available partic ularly when installing as 1 pipe system 4 In an area where ventilation facilities provide for safe lim its of ambient temperature under normal operating condi tions Ambient temperatures must not fall below 32 F 0 C unless the c...

Page 5: ...X OUTLET AIR TEMP F BLOWER TOTAL UNIT AMPS MAX OVER CURRENT PROTECT MIN WIRE SIZE AWG 75 FT ONE WAY INPUT MBH OUTPUT MBH NOM CFM HP AMPS SIZE IN 40 37 1000 14 1 2 92 4 35 65 165 1 3 6 2 10 x 6 9 0 20 14 60 55 1000 17 1 2 92 2 45 75 175 1 3 6 2 10 x 6 9 0 20 14 80 74 1200 17 1 2 92 0 35 65 165 1 2 7 0 11 x 8 12 0 20 14 80 76 1600 21 94 3 30 60 160 3 4 11 5 11 x 8 12 0 20 14 100 93 1400 21 92 2 45 7...

Page 6: ...1200 B 80 75 1600 C 100 95 2000 C 120 112 2000 D Table 2 RATINGS PHYSICAL ELECTRICAL DATA DOWNFLOW HORIZONTAL MODELS MODELS P DH FG9 DH G9T DH CABINET WIDTH AFUE AIR TEMP RISE F MAX OUTLET AIR TEMP F BLOWER TOTAL UNIT AMPS MAX OVER CURRENT PROTECT MIN WIRE SIZE AWG 75FT ONE WAY INPUT MBH OUTPUT MBH NOM CFM HP AMPS SIZE IN 40 37 1000 14 1 2 91 0 25 55 155 1 3 6 2 10 x 6 9 0 20 14 60 55 1200 17 1 2 ...

Page 7: ...ng cooling coil is used it may be placed directly on the furnace outlet and sealed to prevent leakage Follow the coil instructions for installing the supply plenum On all installations without a coil a removable access panel is recommended in the outlet duct such that smoke or reflected light would be observable inside the casing to indi cate the presence of leaks in the heat exchanger This access...

Page 8: ...covers the cabinet air opening and secure the filter in place at the front of the cabinet by fastening the closed looped end of the retainer wire under the flanged edge of the cabinet When properly installed the filter should fit flush with all four sides of the cabinet wall NOTE Air velocity through throw away type filters may not exceed 300 feet per minute All velocities over this require the us...

Page 9: ...etion of the coil installation NOTE Duct pliers or other suitable tool can be used to bend perforations To help bend flanges in a straight line scribe a line between the perforations prior to bending Horizontal Installations For installation of an air conditioning coil in a horizontal appli cation the perforations in the wrapper flanges must be bent away from the heat exchanger to create duct flan...

Page 10: ... furnace accessories on Page 31 for external filter kit options ATTIC INSTALLATION FIGURE 6 downflow filters FIGURE 7 Combustible Floor Base Accessory NOTE FILTER ACCESS THRU DUCT WORK MUST BE PROVIDED FOR REMOVAL AND CLEANING BRANCH DUCTS CROSS SECTION A A WITH PLENUM AND FILTERS DUCTWORK FILTERS FILTER RACK FH RACK AND FILTERS SECURED INSIDE BLOWER SECTION FOR SHIPMENT FILTER RACK FACTORY SUPPLI...

Page 11: ... National Fuel Gas Code ANSI Z223 1 latest edition or the CAN CGA B149 1 or 2 Installation Codes latest edition and all applicable local and utility requirements Some utility companies or local codes require pipe sizes larger than the minimum sizes listed in these instructions and in the codes Properly sized wrought iron approved flexible or steel pipe must be used when making gas connections to t...

Page 12: ... power supply and a proper ground connection Refer to the FURNACE CONTROL DIAGNOSTICS on page 36 for symptoms of reversed power supply polarity Connect the power supply as shown on the unit wiring label on the inside of the blower compartment door The black fur nace lead must be connected to the L1 hot wire from the power supply The white furnace lead must be connected to neutral Also the green eq...

Page 13: ...r is sized for the furnace com ponents only and should not be connected to power auxiliary devices such as humidifiers air cleaners etc The trans former may provide power for an air conditioning unit contactor FIGURE 11 Electrical Wiring Upflow Models FIGURE 12 Electrical Wiring Downflow Horizontal Models NEUTRALS EAC COOL HEAT HUM PARK PARK L1 XFMR Y W R G C CLASS 2 SYSTEM CONTROL WIRING TO THERM...

Page 14: ... vent system using combustion air from the area surrounding the furnace 3 Two pipe intake vent system using combustion air from a ventilated attic space and a vent pipe to the outside Be sure to follow the appropriate venting section details related information and limitations for your type of installation METHOD ONE TWO PIPE SEALED COMBUSTION AIR VENT SYSTEM COMBUSTION AIR INTAKE VENT CONNECTIONS...

Page 15: ...ent termination section These parts are shown shaded For downflow horizontal models the two additional elbows required for the air intake pipe entry into the burner box are also accounted for and should not be counted These parts are shown shaded For downflow horizontal models only two additional elbows are also accounted for and also should not be counted These parts are shown shaded 5 Combustion...

Page 16: ...ical fresh air intake 1 ft From any door window or non mechanical fresh air or combustion air intake 1 ft Above grade and anticipated snow depth 1 ft Above grade when adjacent to public walkway 7 ft From electric gas meters regulators and relief equipment min horizontal distance 4 ft Does not apply to multiple installations of this furnace model Refer to VENTING MULTIPLE UNITS Section on page 18 N...

Page 17: ...2 MINIMUM VENT MAINTAIN 12 CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE WHICHEVER IS GREATER 12 SEPARATION BETWEEN BOTTOM OF COMBUSTION AIR AND BOTTOM OF VENT COMBUSTION AIR 90 OVERHANG 12 MINIMUM VENT MAINTAIN 12 CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE WHICHEVER IS GREATER 12 SEPARATION BETWEEN BOTTOM OF COMBUSTION AIR AND BOTTOM OF VENT COMBUSTION AIR 90 18 MAX FIGURE ...

Page 18: ...This type installation will use combustion air from within the space surrounding the furnace This may be from within the space in a non confined location or it may be brought into the furnace area from outdoors It is not directly ducted into the furnace A single properly sized pipe from the furnace vent connector to the outdoors must be provided For upflow models combustion air is brought into the...

Page 19: ... where the equipment has clearances of at least 1 inch from the sides and back and 6 inches from the front of the appli ance The opening shall communicate through a vertical or horizontal duct to the outdoors or spaces crawl or attic that freely communicate with the outdoors and shall have a minimum free area of a 1 sq in per 3000 Btu per hr of the total input rating of all equipment located in th...

Page 20: ...ational Standards Institute ANSI standards and Amer ican Society for Testing and Materials ASTM standards D1785 Schedule 40 PVC D2665 PVC DWV F891 PVC DWV Cellular Core D2241 SDR 21 and SDR 26 PVC D2261 ABS DWV or F628 Schedule 40 ABS Pipe cement and primer must conform to ASTM Stan dards D2564 PVC or D2235 ABS 5 The use of flexible connectors or no hub connectors in the vent system is not allowed...

Page 21: ...ng NOTE Consideration must be given for degradation of build ing materials by flue gases NOTE Shaded components of the vent system shown in Fig ures 27 through 29 are considered to be part of the termina tion These components should not be counted when determining piping limitations Sidewall termination may require sealing or shielding of building surfaces with a corro sive resistant material to p...

Page 22: ...uires two properly sized pipes One brings combustion air from a properly ventilated attic space and a second pipe from the furnace vent connection top right of unit exits to the outdoors COMBUSTION AIR INTAKE Table 4 on page 15 for intake pipe sizing allowable length and elbow usage Follow all notes procedures and required materials in the Two Pipe Sealed Combustion section Method 1 when installin...

Page 23: ... of excess condensate in the inducer motor during operational cycles refer to Figures 31 or 32 To install the vent drain complete the following steps 1 Place a tee of the proper diameter for the vent system being installed 2 or 3 in the horizontal run closest to the furnace 2 Place a reducer bushing of proper diameter in the stem portion of the tee The recommended size for the reducer is 5 8 3 Pla...

Page 24: ...trap must be field supplied using 5 8 I D hose material Refer to Figure 35 and Table 8 for hose placement and sizing Drain Connection The following steps apply to all models For horizontal application also follow the procedure for relo cating the trap assembly and installing drain hoses 1 It is recommended that either 1 2 or 3 4 PVC or equiva lent pipe be field installed as drain pipe The condensa...

Page 25: ...mbustion air vent piping system These switches de energize the ignition control module and the gas valve if any of the following condi tions are present Refer to Figure 36 for tubing connections 1 Blockage of combustion air piping or terminal 1LP 2 Blockage of vent piping or terminal 1LP 3 Failure of combustion air blower motor 1LP 4 Blockage of condensate drain piping Upflow units 1LP Downflow Ho...

Page 26: ...in the field and in the fac tory should be checked for proper tightness IGNITION SYSTEM SEQUENCE 1 Turn the gas supply ON at external valve and main gas valve 2 Set the thermostat above room temperature to call for heat 3 System start up will occur as follows a The induced draft blower motor will start and come up to speed Shortly after venter start up the hot surface igniter will glow for about 1...

Page 27: ...ning Using this information locate 26 seconds in the first column of Read across to the column headed 1 Cubic Foot where you will see that 138 cubic feet of gas per hour are consumed by the furnace at that rate Multiply 138 by 850 the BTU rating of the gas obtained from the local gas company The result is 117 300 Btuh which is close to the 120 000 Btuh rating of the furnace If the actual input is ...

Page 28: ...ust be removed entirely to gain access to the adjustment screw Loosening or tightening the cap does not adjust the flow of gas 3 Refer to Figure 37 on page 27 for location of pressure regulator adjustment cap and screw on main gas valve 4 Turn gas and electrical supplies ON Start furnace and observe manifold pressure on manometer 5 Adjust manifold pressure by adjusting gas valve regula tor screw f...

Page 29: ...OSE NOT USED U TUBE MANOMETER 3 5 IN WATER COLUMN GAS PRESSURE SHOWN BURNER BOX WITH COVER REMOVED 6 5 4 3 2 1 0 1 2 3 4 5 6 WITH BURNER BOX COVER IN PLACE WITH BURNER BOX COVER REMOVED FIGURE 39 downflow Horizontal Models P DH FG9 DH G9T DH Reading Gas Pressure GAS VALVE OUTLET PRESSURE TAP BURNER BOX PRESSURE REFERENCE HOSE BURNER BOX WITH COVER U TUBE MANOMETER 3 5 IN WATER COLUMN GAS PRESSURE ...

Page 30: ...fan off setting must be long enough to adequately cool the furnace but not so long that cold air is blown into the heated space The fan off timing may be adjusted by positioning the jumper located on the control board Refer to Figure 40 FURNACE ACCESSORIES Substitute 2 for York brands and 6 for non York brands Do not energize more than one motor speed at a time or damage to the motor will result F...

Page 31: ... 2285 2205 2145 2080 1995 1905 1820 1715 1610 MED 1950 1915 1870 1830 1780 1710 1640 1560 1475 1375 LOW 1575 1555 1540 1505 1470 1430 1380 1315 1245 1150 120 112 2000 D HIGH 2375 2315 2245 2175 2100 2020 1935 1840 1755 1650 MED 1990 1955 1920 1875 1835 1775 1715 1630 1550 1450 LOW 1565 1550 1530 1505 1480 1445 1405 1350 1280 1200 140 130 2000 D HIGH 2410 2340 2265 2200 2125 2035 1960 1860 1775 167...

Page 32: ...930 LOW 930 915 895 880 860 835 810 770 695 620 80 75 1600 C HIGH 2030 1980 1925 1870 1830 1755 1675 1600 1515 1435 MED 1505 1490 1475 1460 1440 1420 1380 1340 1280 1215 LOW 1295 1285 1260 1240 1215 1190 1160 1130 1080 1000 100 95 2000 C HIGH 2330 2270 2200 2130 2060 1985 1890 1810 1710 1625 MED 2005 1965 1920 1870 1820 1750 1680 1600 1500 1395 LOW 1580 1560 1535 1510 1480 1440 1390 1325 1255 1175...

Page 33: ...ENCE OF OPERATION The following describes the sequence of operation of the fur nace Refer to the schematic wiring diagrams in the back of this manual for component location CONTINUOUS BLOWER On cooling heating thermostats with fan switch when the fan switch is set in the ON position a circuit is completed between terminals R and G of the thermostat The blower motor is energized through the cool te...

Page 34: ...checked periodically for dirt accumulation Dirty filters greatly restrict the flow of air and may cause dam age to the system Clean the filters at least every three months On new con struction check the filters every week for the first four weeks Inspect the filters every three weeks after that especially if the system is running constantly All filters used with the furnace are the high velocity c...

Page 35: ...orizontal models only remove four top panel screws and lift the top panel enough to disengage and remove the flue chase assembly 4 Remove blower assembly mounting screws and slide the blower assembly out of the slots in the deck If the two shipping screws were not previously removed also remove and discard these two screws located on each front corner of the blower assembly 5 On downflow models on...

Page 36: ... secondary heat exchanger 3 With a stiff wire brush brush out loose scale or soot 4 Vacuum the secondary heat exchanger 5 Finish the cleaning procedure by following steps 10 thru 12 under Cleaning the Primary Heat Exchanger VENT AIR INTAKE Should it be necessary to service the vent air intake system the manufacturer recommends this service be conducted by a qualified service agency The operation o...

Page 37: ... heat before locking out This may be caused by low gas pressure faulty gas valve faulty hot surface ignitor or burner problem 8 FLASH This fault is indicated if the flame is lost 5 times 4 recycles during the heating cycle This could be caused by low gas pressure or faulty gas valve 9 FLASH Indicates reversed line voltage polarity Both heating and cooling operations will be affected Check polar it...

Page 38: ...RAM POWER SUPPLY 115 1 60 SEE NOTE 1 GND DS C NO LS1 C 1LP COM 120V 24V SEC PRI 1T 40VA Y W R G C VENTOR MOTOR IGN R HEAT COOL THERMOSTAT G ON AUTO Y COOL HEAT OFF W NOTES LEGEND ROS1 ROLL OUT SWITCH LS1 PRIMARY LIMIT SWITCH MOTOR P4 S4 2 PIN PLUG SOCKET AT INDUCER IGNITOR P3 S3 2 PIN PLUG SOCKET AT HOT SURFACE CONTROL BOARD P2 S2 4 PIN PLUG SOCKET ON IGNITION CONTROL BOARD P1 S1 12 PIN PLUG SOCKE...

Page 39: ...035 17477 002 Rev D 1202 Unitary Products Group 39 WIRING DIAGRAM DOWNFLOW HORIZONTAL MODELS P DH FG9 DH G9T DH NOTE THE FURNACE S CONTROL SYSTEM REQUIRES CORRECT POLARITY OF THE POWER SUPPLY ...

Page 40: ...hange without notice Printed in U S A 035 17477 002 Rev D 1202 Copyright by York International Corp 2002 All rights reserved Supersedes 035 17477 002 Rev C 1002 Unitary 5005 Norman Product York OK Group Drive 73069 ...

Page 41: ...at have been wet or the furnace if deemed necessary FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or prop erty damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use an...

Page 42: ...4 Examine the furnace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physically sound without cracks gaps or sagging and has a good seal 5 Examine the furnace casing for obvious signs of deterioration 6 Examine the burner flames to make sure they are in good adjust ment Refer to the pictorial sketch shown in Figure 2 as a ...

Page 43: ...ce any part of the control system and any gas control which has been under water Operating Instructions 1 STOP Read the safety information above 2 Set the thermostat to the lowest setting 3 Turn off all electric power to the appliance 4 Remove burner access panel 5 Move gas control switch to the OFF position Do not force 6 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow ...

Page 44: ...re you install the right size filter for your furnace Dirty filters greatly restrict the flow of air and may cause damage to the moving parts of the furnace If the filters become clogged the heat exchangers and blower motor could overheat resulting in a potentially dangerous situation Never operate your furnace without a suitable air filter Removing Filters Internally Mounted Air Filters Most upfl...

Page 45: ...on HEAT and the fan is set on AUTO and there is a call for heat a circuit is completed between terminals R and W of the thermostat When the proper amount of combustion air is being provided the pressure switch will close the ignition control pro vides a 17 second warm up period the gas valve then opens the gas starts to flow ignition occurs and the flame sensor begins its sensing function The blow...

Page 46: ...Remove burners from the burner assembly 7 Remove the upper cover plate at the top of the furnace Remove the internal baffle 8 The upper portion of the heat exchanger is now exposed 9 With a long flexible wire brush clean inside each tube at both the top and bottom The brush must pass around the rear heat exchanger tubes and then vacuum loose the scale and dirt from each tube 10 Clean vacuum all bu...

Page 47: ...s during the heating cycle This could be caused by low gas pres sure or faulty gas valve 9 FLASHES Indicates reversed line voltage polarity Both heating and cooling operations will be affected Check polarity at furnace and branch 11 FLASHES This fault will be indicated if the rollout jumper wire con nection soldered into the board is broken If this fault occurs the control will have to be replaced...

Page 48: ...PARTS LIST C G R W Y HUM EAC XFMR LINE CIR HUM EAC XFMR LINE PARK PARK HEAT COOL 17 18 23 24 30 25 31 32 33 48 20 21 22 26 44 27 28 29 34 36 37 47 52 63 50 51 49 56 59 62 58 60 43 45 38 1 4 2 6 10 11 13 7 8 9 12 3 5 14 16 15 O F F O N 9 6 13 9 24 46 27 40 42 35 29 8 61 53 19 ...

Page 49: ...CHANGER 32 PANEL FRONT Blower 33 PANEL FRONT Burner 34 PANEL TOP 35 SUPPORT BURNER 36 WRAPPER CABINET 37 PANEL VESTIBULE Lower 38 PLUG WINDOW CLEAR 875 MISCELLANEOUS 39 CLIP FILTER RETAINER 2Req d P3U G9T 40 COLLAR AIR INTAKE Burner Box 41 FILTER AIR FILTER SIZE Refer to Table 1 42 GASKET AIR INTAKE 43 GASKET COMBUSTION BLOWER 44 GASKET CONDENSATE PAN 45 GASKET BURN BOX TO VEST PANEL 46 GROMMET MA...

Page 50: ...On ALL P3U MODELS 2TH13700424 THERMOSTAT One stage heat Deluxe 24V with heat only sub base does not include fan switch NOTE For one stage cool or one stage heat cool must be used with sub base 2TB17700424 2TB17700424 SUBBASE 24V One stage heat cool Man ual changeover integral sub base System Switch Cool Off Heat Fan Switch Auto On 2ET07700224 THERMOSTAT One stage heat cool Programmable changeover ...

Page 51: ...035 19592 001 Rev C 0204 Unitary Products Group 11 SECTION IV WIRING DIAGRAM FIGURE 9 Wiring Diagram ...

Page 52: ...applies only to products installed in the United States and Canada EXCLUSIONS This warranty does not cover any 1 Shipping labor or material charges 2 Damages resulting from transportation installation or servicing 3 Damages resulting from accident abuse fire flood alteration or acts of God tampering altering defacing or removing the product serial number will serve to void this warranty 4 Damages ...

Page 53: ...en wet or the furnace if deemed necessary FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone inc...

Page 54: ...ace containing the furnace 4 Examine the furnace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physically sound without cracks gaps or sagging and has a good seal 5 Examine the furnace casing for obvious signs of deterioration 6 Examine the burner flames to make sure they are in good adjust ment Refer to the pictorial ske...

Page 55: ...tting 3 Turn off all electric power to the appliance 4 Remove burner access panel 5 Move gas control switch to the OFF position Do not force 6 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above If you don t smell gas go to next step 7 Move gas control switch to the ON position Do not force 8 Replace burner access panel 9 Turn on all electri...

Page 56: ... How to Clean your Filter High velocity filters may be cleaned with a vacuum cleaner or washed with a garden hose Be sure to shake off excess water and allow filter to completely dry before re installing the filter To replace the filter after cleaning you must do the following 1 Slide filter into place 2 Snap the door on or place the door in position and tighten the retaining screws if provided 3 ...

Page 57: ... sensor begins its sensing function The blower motor will energize 30 seconds after the gas valve opens if a flame is detected Normal furnace operation will continue until the thermostat circuit between R and W is opened which causes the ignition system and gas valve to de energize and the burner flames to be extinguished The vent motor will operate for 15 seconds and the blower motor will operate...

Page 58: ...sing a stiff wire brush remove the loose scale or soot from each tube 4 Vacuum the secondary heat exchanger 5 Finish the cleaning procedure by following Steps 5 thru 7 under cleaning the Heat Exchanger Cleaning the Vent Air Intake System Should it be necessary to service the vent air intake system the man ufacturer recommends this service be conducted by a qualified service agency The operation of...

Page 59: ...gas pressure faulty gas valve faulty hot surface ignitor or burner problem may cause this 8 FLASHES This fault is indicated if the flame is lost 5 times 4 recy cles during the heating cycle This could be caused by low gas pres sure or faulty gas valve 9 FLASHES Indicates reversed line voltage polarity Both heating and cooling operations will be affected Check polarity at furnace and branch 11 FLAS...

Page 60: ...8 Unitary Products Group SECTION III REPLACEMENT PARTS LIST 15 16 1 17 3 7A 13 10 11 14 5 8 12 9 2 7 6 6 24 27 26 35 38 34 32 33 25 36 22 37 21 20 28 29 23 31 30 18 19 51 63 43 53 59 57 58 55 39 41 52 45 47 62 60 42 48 49 50 44 ...

Page 61: ...TOP 35 SUPPORT BURNER 36 WRAPPER CABINET Insulated P3D WRAPPER CABINET G9T FG9 37 PANEL VESTIBULE Lower 38 PLUG WINDOW CLEAR 875 MISCELLANEOUS 39 COLLAR AIR INTAKE Burner Box 40 FILTER AIR 2 Req d P3D G9T FILTER SIZE 41 GASKET AIR INTAKE 42 GASKET COMBUSTION BLOWER 43 GASKET CONDENSATE PAN 44 GASKET BURN BOX TO VEST PANEL 45 GROMMET MANIFOLD SEAL 46 47 HANDLE DOOR 48 ISOLATOR TUBE 3 Req d 49 ISOLA...

Page 62: ...ETS 1CB0324 24 1 2 CABINETS 1BR0314 EXTERNAL FILTER RACK WITH HIGH VELOCITY FILTER FOR HORIZONTAL APPLICATION 14 1 2 CABINETS 1BR0317 17 1 2 CABINETS 1BR0321 21 CABINETS 1BR0324 24 1 2 CABINETS 1NK0301 CONDENSATE NEUTRALIZER KIT ALL MODELS REPLACEMENT PART CONTACT INFORMATION This is a generic parts list To request a complete parts list refer to the contact information below Visit our website at w...

Page 63: ...035 19600 001 Rev B 0204 Unitary Products Group 11 SECTION IV WIRING DIAGRAM FIGURE 9 Wiring Diagram ...

Page 64: ...s warranty does not cover any 1 Shipping labor or material charges 2 Damages resulting from transportation installation or servicing 3 Damages resulting from accident abuse fire flood alteration or acts of God tampering altering defacing or removing the product serial number will serve to void this warranty 4 Damages resulting from use of the product in a corrosive atmosphere 5 Damages resulting f...

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