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FIRE OR EXPLOSION HAZARD
This furnace is not designed for use in mobile

homes, trailers or recreational vehicles.
Such use could result in death, bodily injury

and/or property damage.

!

DIRECT VENT GAS FURNACE

FAN ASSISTED,

* Denotes Brands (C, H, T)

Electric Shock Hazard
Turn Off All Power Before

Servicing.
Failure to do so can result in

death, personal injury and/or

property damage.

International Comfort Products Corporation (USA)

Lewisburg, TN 37091

INSTALLER: Affix these instructions

on or adjacent to the furnace.

CONSUMER: Retain these

instructions for future reference.

!

Printed in U.S.A.

LP1

4/29/2003

440 01 2020 (01)

*9MPT & *9MPV

SAFETY REQUIREMENTS

Recognize safety information. This is the safety--alert symbol

!

. When you see this symbol on the furnace and in instructions manuals be alert to

the potential for personal injury.
Understand the signal words

DANGER, WARNING,

or

CAUTION.

These words are used with the safety--alert symbol.

DANGER

identifies the most

serious hazards, those that

will

result in severe personal injury or death.

WARNING

signifies a hazard that

could

result in personal injury or death.

CAUTION

is used to identify unsafe practices that

could

result in minor personal injury or product and property damage.

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should
install, repair, or service heating equipment.
Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached
to or shipped with the unit and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety codes including the current edition National Fuel Gas Code (NFGC) ANSI
Z223.1--2002/NFPA No. 54--2002. In Canada, refer to the current edition of the National Standard of Canada Natural Gas and Propane Installation
Code (NSCNGPIC) CSA B149.1--00. Wear safety glasses and work gloves. Have fire extinguisher available during start--up and adjustment
procedures and service calls.
These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions
exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require
these instructions as a minimum for a safe installation.

Table of Contents

1. Safe Installation Requirements

3

. . . . . . . . . . . . . . . . .

2. Installation

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Combustion & Ventilation Air

7

. . . . . . . . . . . . . . . . . .

4. Vent & Combustion Air Piping

10

. . . . . . . . . . . . . . . .

5. Gas Supply and Piping

26

. . . . . . . . . . . . . . . . . . . . . .

6. Electrical Wiring

30

. . . . . . . . . . . . . . . . . . . . . . . . . . .

7. Ductwork and Filter

31

. . . . . . . . . . . . . . . . . . . . . . . .

8. Checks and Adjustments

34

. . . . . . . . . . . . . . . . . . . .

9. Furnace Maintenance

36

. . . . . . . . . . . . . . . . . . . . . . .

10. Sequence of Operation & Diagnostics

37

. . . . . . . . . .

11. Concentric Vent Termination

43

. . . . . . . . . . . . . . . . .

Tech Support and Parts

47

. . . . . . . . . . . . . . . . . . . . . . .

Summary of Contents for 9MPT050F12A

Page 1: ...l should install repair or service heating equipment Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters All other operations must be perform...

Page 2: ...ly Return F or C Lo Fire Supply Return F or C Filter Type and Size Fan Time ON Setting Fan Time OFF Setting Manual Gas Shut Off Upstream of Furnace Drip Leg YES NO Condensate Drain Connected YES NO Co...

Page 3: ...rn air ducts Install correct filter type and size Unit MUST be installed so electrical components are pro tected from direct contact with water Safety Rules Yourunitis builtto provide many years of sa...

Page 4: ...me your furnace will be ready to start as it is not necessary to drain the antifreeze from the furnace 2 Installation CARBON MONOXIDE POISONING HAZARD Failure toproperly ventthis furnace orother appli...

Page 5: ...pflow horizontal either left or right or downflow airflow position DO NOT install this furnace on its back For the upflow position the return air ductwork can be at tached to either the left or right...

Page 6: ...11 16 111 16 175 16 215 8 21 4 131 4 24 47 8 215 8 17 8 297 8 273 16 913 16 3311 16 6 440 01 2020 01 Cabinet to Combustible Clearances TOP BOT RH LH BACK FRONT FLUE 1 0 0 0 0 3 0 U it Cabinet Bottom...

Page 7: ...entdam age by overflow due to blocked condensate drain 3 Combustion Ventilation Air For Single Pipe Installation CARBON MONOXIDE POISONING HAZARD Failure to provide adequate combustion and ventilation...

Page 8: ...e theequipmenthasclearances of at least 1 from the sides and back and 6 from the front of the appliance The opening shall directly communicate with the out doors or shall communicate through a vertica...

Page 9: ...DE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system beingplaced into operation while all other appliances connected to the venting system...

Page 10: ...isture in the flue gases that may condense as it leaves the vent pipe See Special Instruction For Horizontal Vents 5 The vertical vent pipe MUST be supported so that no weight is allowed to rest on th...

Page 11: ...VC pipe or 100 000 Btuh Furnace 40 5 90 elbows with 3 PVC pipe 125 000 Btuh Furnace 40 5 90 elbows with 3 PVC pipe Elbows are DWV Long Radius Type for 2 and 3 vents If more than five elbows are requir...

Page 12: ...des The drain line must maintain a 1 4 per footdownward slope toward the drain 1 4 per foot is recommended Installation of an overflow line is recommended when the 1 4 per foot slope to the conden sat...

Page 13: ...it Install casing grommet black rubber 5 8 ID grommet in loose parts bag Install the 1 2 CPVC street elbow on discharge of Trap Install the black PVC tube connector 3 4 PVC x 1 2 CPVC from loose parts...

Page 14: ...ommet in side of casing Cut an appropriate length of 2 PVC pipe long enough to exit the cabinet and connect the vent drain to either A 2 PVC coupling fastened onto the Drain Tee 9MPT or V models Insta...

Page 15: ...to the Trap Secure all connections with clamps Install the vent pipe grommet into the casing Cut an appropriate length of 2 PVC pipe long enough to exit the cabinet and connect the vent drain to eith...

Page 16: ...e unit using the 2 screws provided Cut the 5 8 ID corrugated hose as shown above and fasten the 90 bend end to the Trap and fasten the straight end to the transition drain Secure both connections with...

Page 17: ...ap and mount the Trap externally to the right side of the unit using the 2 screws provided Connect the corrugated Drain Tube from the transition box to the Trap as shown If an extension is required us...

Page 18: ...tration above Con nect the corrugated hose from the transition to the Trap Secure connections with clamps Remove the black 1 2 ID Drain Tube from the Drain Tee Install a yellow cap and clamp over the...

Page 19: ...he illustration above Con nect the corrugated hose from the transition to the Trap Secure connections with clamps Connect the black 1 2 ID Drain Tube from the Vent Drain to the Trap If an extension is...

Page 20: ...as shown in the illustration above Con nect the corrugated hose from the transition to the Trap Secure connections with clamps Connect the black 1 2 ID Drain Tube from the Vent Drain to the Trap If a...

Page 21: ...rrugated hose from the transition to the Trap Secure connections with clamps Connect the black 1 2 ID Drain Tube from the Vent Drain to the Trap If an extension is required use the 1 2 OD barbed coupl...

Page 22: ...flue gases from the condensate drain line and open tee for a period of time and may result in temporary lockout of the furnace upon start up Main drain line construction is left to the discretion of...

Page 23: ...ts and avoid contact with skin or eyes This furnaceis approvedforventingwith Schedule40 PVC CPVC ABS Cellular Core pipe fittings and SDR 26 PVC NOTE All PVC CPVC ABS and Cellular Core pipe fittings so...

Page 24: ...l to restrain pipe from moving 3 Insulate pipe with Armaflex or equivalent moisture resistant closed cell foam insulation or Fiberglass insulation if boxed in and sealed against moisture 8 MIN 20 MAX...

Page 25: ...t Vent and Exhaust Air Ter mination Dimension A is touching or 2 maximum separation 12 Min Grade or Snow Level 18 Min for Cold Climates Sustained Below 0 F 8 Min 20 Max 8 Min Exhaust 8 Min 8 Min 20 Ma...

Page 26: ...Gas input to burners MUST NOT exceed the rated input shown on rating plate 3 Do NOT allow minimum gas supply pressure to vary down ward Doing so will decrease input to furnace Refer to Table 5 for nor...

Page 27: ...The derating of these units at 2 Natural and 4 L P has been tested and approved by CSA MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS Table 6 High Altitude Pressure Chart 2000 8000...

Page 28: ...sed on a natural gas BTU content of 1 000 BTU s per cubic meter Check with gas supplier for actual BTU content 1 Turn OFFgas supplyto allappliances andstartfurnace Use jumper wire on R to W1 and W2 fo...

Page 29: ...eel pipe and fittings or other pipe ap proved by local code 5 Use ground joint unions and install a drip leg no less than 3 long to trap dirt and moisture before it can enter gas valve 6 Use two pipe...

Page 30: ...nace must be made on terminal board to fan control Optional Equipment All wiring from furnace to optional equipment MUST conform to lo cal codes or in the absence of local codes with the latest editio...

Page 31: ...death personal injury and or property damage Cool air passing over heat exchanger can cause condensate to form resulting in heat exchanger failure Connections NOTE On upflow installations return air...

Page 32: ...lter to clear the front raised edge of the furnace Insert filter into side clips first and push filter back until it is fully engaged into back clip When filter is in place slide clips back into place...

Page 33: ...dimensions listed in Table 7 since the base is equipped with locating tabs that center the base over the opening The opening in the base is 11 4 shorterand 11 8 narrower than the recommended size of t...

Page 34: ...power to furnace Check for wiring errors or obstruction to blower Failure to correct hazard could result in death personal injury and or property damage CAUTION Gas Supply Pressure Gas supply pressur...

Page 35: ...fter the adjustments are com plete Return fourth 4th to previous setting Changing Blower Speed 9MPT Models ELECTRICAL SHOCK HAZARD Failure to do so can result in death and or personal injury Turn OFF...

Page 36: ...jury and or property damage Turn OFF power to furnace before changing speed taps NOTE The blowerspeeds thatthe manufacturersetsfromthefac tory for this product are based on a nominal 400 CFM per ton c...

Page 37: ...p period on a call for Heating that occurs during a G request NOTE3 Heating or Cooling requests received during a Fan request cause the fan speed to change to the appropriate heat or cool speed after...

Page 38: ...Low Pressure switch circuit was still sensed as open 30 seconds after the inducer was energized System is in 5 minute delay mode with inducer off After 5 minute delay a new ignition sequence will be...

Page 39: ...alve Honeywell Figure 44 INLET OUTLET Diagnostic Light on some models 25 22 25a On Off Switch Pilot Adjustment Manifold Adjustment Hidden Manifold Pressure Adjustment INLET OUTLET 25 22 49a LO HI 39 4...

Page 40: ...TO OPEN 1 Ignitor turns OFF about 30 seconds into the trial for ignition If the pilot flame has not lit it turns back ON for the final 30 seconds of the 90 second trial for ignition The pilot valve is...

Page 41: ...speed Main limit switch Manual reset burner rollout switch Limit and rollout switch wiring is in good condition and securely connected 5 Flashes Flame signal sensed out of proper sequence Combustion b...

Page 42: ...ate a new ignition sequence Main limit switch Limit and rollout switch wiring is in good condition and securely connected Restriction in duct work Dirty filter 7 Flashes Soft Lockout Blower failure ty...

Page 43: ...and the exhaust vent pipes must attach to the termination kit The termination kit must terminate outside the structure and must be installed per the instructions outlined below for vertical or horizon...

Page 44: ...nt the parts using the procedures for Joining Pipe and Fittingssection ofthe manual A Cementthe YConcen tric fitting to the 4 diameter kit pipe See Figure 48 B Ce ment the 3 rain cap to the 21 2 diame...

Page 45: ...be field installed to prevent movement of ter mination kit in side wall Figure 50 8 Install the rain cap and the small diameter pipe assembly in the Y concentric fitting and the large pipe assembly En...

Page 46: ...46 440 01 2020 01...

Page 47: ...9MPT100J16B1 9MPT125L20B1 9MPV050F12B1 9MPV075F14B1 9MPV100J16B1 9MPV125L20B1 Denotes Brand Save This Manual For Future Reference Four Position Furnace 25 23 30 International Comfort Products Corpora...

Page 48: ...Blower Transition Box Lo Fire Std Pressures of WC 5 No Elbows 40 5 90 DWV Elbows 1 80 2 60 1 30 2 30 1 20 1 90 1 00 1 80 1 80 2 60 1 30 2 30 1 20 1 90 1 00 1 80 1 80 2 60 1 70 2 50 1 20 1 90 1 00 1 8...

Page 49: ...631 921 1309 1530 0 5 609 891 1252 1460 0 6 569 845 1187 1380 0 7 529 799 1122 1300 0 8 490 730 1030 1190 0 9 680 950 1080 1 0 831 969 For 100 Models 4 Ton Units For 125 Models 5 Ton Units Speed Tap L...

Page 50: ...RANGE MHI RED LO BLACK HI BLUE MLO SPEED TAP CODE HEAT LOW IND LOW PURPLE P YELLOW Y WHITE W RED R ORANGE O GREEN G BROWN BR BLUE BL BLACK BK IND IN IND HI 3 COLOR CODE 24V SECONDARY 115V PRIMARY P1 4...

Page 51: ...1 440 01 2020 01 13 9MPT 25 23 95 AA 13 14 Z 19 YY WW 15 FF N LL EE 16 Z BB 12 16 GG 17 DD 11 CC FF 18 V W R S T U J L JJ Q P Y X F UU VV TT SS H RR QQ KK 5 4 3 9 10 M K 2 1 B A 8 6 7 HH K 25 23 95c O...

Page 52: ...e Pilot 018 503211 1 1 1 1 20 Filter HH 16X25X1 2 1010365 1 1 2 2 Key Description Part 9MPT Key No Description Non Functional Part Number 050 F12 075 F14 100 J16 125 L20 A Panel Top 1012866 1012867 10...

Page 53: ...1 1 1 SS Bracket Trap Bracket 1171987 1 1 1 1 TT Tube Drain Coll Box 5 8 ID 1171988 1 1 1 1 UU Tube Drain Tee 1 2 ID 1171989 1 1 1 1 VV Tube Relief 1009238 1 1 1 1 WW Drain Vent 1014003 1 1 1 1 YY Te...

Page 54: ...tion Box Hi Fire Std Pressures of WC 5 No Elbows 40 5 90 DWV Elbows Blower Transition Box Lo Fire Std Pressures of WC 5 No Elbows 40 5 90 DWV Elbows 1 80 2 60 1 30 2 30 1 20 1 90 1 00 1 80 1 80 2 60 1...

Page 55: ...ic on high heat Lo Heat Air Temperature Adjustment F Switch Settings Furnace Model 3 4 5 50K 75K 100K 125K 0 0 0 0 0 0 0 0 0 1 1 1 1 6 0 1 0 4 2 2 8 0 1 1 7 3 5 12 1 0 0 11 6 8 16 1 0 1 7 4 5 1 1 1 0...

Page 56: ...us Airflow Settings Figure 1 ESP W C 9MPV050 COOLING CFM VS EXTERNAL STATIC PRESSURE SCFM 0 200 400 600 800 1000 1200 1400 0 1 0 3 0 5 0 7 1 000 001 010 011 100 101 110 111 Figure 2 ESP W C 9MPV050 Hi...

Page 57: ...ettings Figure 3 ESP W C 9MPV050 Lo HEAT CFM VS EXTERNAL STATIC PRESSURE SCFM 0 100 200 300 400 500 600 700 800 900 1000 0 1 0 2 0 5 0 7 1 000 001 010 011 100 101 110 111 Figure 4 0 200 400 600 800 10...

Page 58: ...Airflow Settings Figure 5 9MPV075 Hi HEAT CFM VS EXTERNAL STATIC PRESSURE SCFM 0 200 400 600 800 1000 1200 1400 0 1 0 2 0 5 0 7 1 000 001 010 011 100 101 110 111 ESP W C 0 200 400 600 800 1000 1200 1...

Page 59: ...nuous Airflow Settings Figure 7 ESP W C 9MPV100 COOLING CFM VS EXTERNAL STATIC PRESSURE SCFM 0 500 1000 1500 2000 2500 0 1 0 3 0 5 0 7 1 000 001 010 011 100 101 110 111 Figure 8 ESP W C 9MPV100 Hi HEA...

Page 60: ...flow Settings Figure 9 ESP W C 9MPV100 Lo HEAT CFM VS EXTERNAL STATIC PRESSURE SCFM 0 200 400 600 800 1000 1200 1400 1600 1800 0 1 0 2 0 3 0 5 0 7 1 000 001 010 011 100 101 110 111 Figure 10 ESP W C 9...

Page 61: ...inuous Airflow Settings Figure 11 ESP W C 9MPV125 Lo HEAT CFM VS EXTERNAL STATIC PRESSURE SCFM 0 500 1000 1500 2000 2500 0 1 0 2 0 5 0 7 1 000 001 010 011 100 101 110 111 Figure 12 ESP W C 9MPV125 Hi...

Page 62: ...120 VAC XFMR DC MTR P1 COM 3 NEUTRAL 2 1 VAC 24 4 7 P2 Y2 C R OPTIONAL HUMIDISTAT W G Y Y W1 G TRANSFORMER HIGH INDH MOTOR INDUCER LO INDIN INDL 1 2 3 4 3 1 115V R R COM BR 24VAC BR 5 A FUSE 24VAC IGN...

Page 63: ...L 2 1 VAC 24 4 7 P2 Y2 C R OPTIONAL HUMIDISTAT W G 1 2 3 4 Y Y W1 G TRANSFORMER HIGH INDH MOTOR INDUCER LO INDIN INDL 1 2 3 4 3 1 115V R R COM BR 24VAC BR 5 A FUSE 24VAC IGNITER SENSOR 2 STAGE SHIELD...

Page 64: ...0 01 2020 01 15 9MPV 25 23 95b 21 AA 13 14 Z 19 YY WW 15 FF N LL EE 16 Z BB 12 16 GG 17 DD 11 CC FF 18 V W R S T U J L JJ Q P Y X F UU VV TT SS H RR QQ KK 5 4 3 9 10 M K 2 1 B A 8 6 7 HH OO 20 MM MM P...

Page 65: ...20 Filter HH 16X25X1 2 1010365 1 1 2 2 21 Control Mtr Variable Spd 1013410 1013411 1013412 1013413 1 1 1 1 Key Part 9MPV Key No Description Part Number 050 F12A 075 F12A 100 J20A 125 L20A A Panel Top...

Page 66: ...S Bracket Trap Bracket 1171987 1 1 1 1 TT Tube Drain Coll Box 5 8 ID 1171988 1 1 1 1 UU Tube Drain Tee 1 2 ID 1171989 1 1 1 1 VV Tube Relief 1009238 1 1 1 1 WW Drain Vent 1014003 1 1 1 1 YY Tee Drain...

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