Portions of the text and tables are reprinted from NFPA 54 /ANSI Z223.1−2009©, with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association, Washington,

DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI, on the referenced subject, which is represented only by the standard in its entirety.

Printed in U.S.A.

C9MPX, H9MPX, T9MPX

Safety Labeling and Signal Words

DANGER,

WARNING,

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

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

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

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

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

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

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

Specifications are subject to change without notice.

Signal Words in Manuals

The signal word WARNING is used throughout

this manual in the following manner:

WARNING

The signal word CAUTION is used throughout

this manual in the following manner:

CAUTION

Signal Words on Product Labeling

Signal words are used in combination with

colors and/or pictures or product labels.

Safety−alert symbol

When you see this symbol on the unit and in

instructions or manuals, be alert to the

potential for personal injury.

WARNING

PERSONAL INJURY, AND/OR PROPERTY

DAMAGE HAZARD

Failure to carefully read and follow this warning could

result in equipment malfunction, property damage,

personal injury and/or death.

Installation or repairs made by unqualified persons could

result in equipment malfunction, property damage,

personal injury and/or death.

The information contained in this manual is intended for

use by a qualified service technician familiar with safety

procedures and equipped with proper tools and test

instruments.

Installation must conform with local building codes and

with the Natural Fuel Gas Code (NFCG) NFPA 54/ANSI

Z223.1,

and

CAN/CSA−B149.1 and .2 Natural Gas and Propane

Installation Codes.

INSTALLER: Affix these instructions on or adjacent to the

furnace.

CONSUMER: Retain these instructions for future

reference.

National

standards

440 01 1051 02 July 2010

Canada

Table of Contents

Summary of Contents for International comfort products C9MPX

Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 95+ Single Stage, Category IV, Gas Furnace C9MPX, H9MPX, T9MPX (Upflow/Downflow/Horizontal) These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals signal words...
Page 2 Required Notice for Massachusetts Installations Important The Commonwealth of Massachusetts requires compliance with regulation 248 CMR as follows: 5.08: Modifications to NFPA−54, Chapter 10 2) Revise 10.8.3 by adding the following additional requirements: (a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: INSTALLATION OF CARBON MONOXIDE DETECTORS.
Page 3 START−UP CHECK SHEET For 95% Furnace (This sheet is optional. Keep this page for future reference.) Date of Start−Up: Calculated Firing Rate:(See Checks and Adjustments Section). Dealer Name: Heating Check Address: Measured Line Pressure when Firing Unit: City, State(Province), Zip or Postal Code: Measured Manifold Gas Pressure: Phone: Temperature of Supply Air:...
Page 4: Safety Considerations
SAFETY CONSIDERATIONS WARNING Improper ins t allation, adjus t ment, alteration, serv ic e, maintenance, or use can cause explosion, fire, electrical shock, ELECTRICAL SHOCK HAZARD or other conditions which may cause death, personal injury, or Failure to follow this warning could cause personal property damage.
Page 5: Safety Rules
• Never obstruct the vent grilles, or any ducts that provide When a furnace is installed so that supply ducts carry air air to the unit. Air must be provided for proper combustion circulated by the furnace to areas outside the space and ventilation of flue gases.
Page 6: Installation
Installation WARNING Figure 1 Typical Upflow Installation CARBON MONOXIDE POISONING HAZARD Aluminum or non-rusting shield recommended. (See Vent Termination Shielding for dimensions). *8″ (203.2mm) Min. Failure to properly vent this furnace or other Coupling on ends of 20′ (6.1m) Max. appliances could result in personal injury or death.
Page 7: Installation Requirements
WARNING Installation Requirements 1. Install furnace level. CARBON MONOXIDE POISONING HAZARD 2. This furnace is NOT to be used for temporary heat of buildings or structures under construction. FaiIure to follow this warning could result in 3. Install furnace as centralized as practical with respect to the personal injury or death.
Page 8 Consignes spéciales pour l’installation de ventillation au This furnace can be installed horizontally in an attic, basement, Canada crawl space, alcove, or suspended from a ceiling in a basement or utility room (See Figure 3). Do not install furnace on its back or in L’installation faite au Canada doit se conformer aux exigences the reverse airflow positions as safety control operation will be du code CSA B149.
Page 9 Figure 4 Dimensions & Clearances MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS FOR ALL UNITS − in (mm) AIR INTAKE REAR VENT FRONT (combustion air openings in 3″ (76.2) furnace and in structure) Required For Service 24″ (609.6) ALL SIDES Of SUPPLY PLENUM 1″...
Page 10: Combustion & Ventilation Air
Knockouts Hammer and Screwdriver used Figure 5 for Knockout CAUTION CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate clothing, safety glasses and gloves when handling parts and servicing furnaces.
Page 11: Confined Space Installation
Outside Air (This is ONLY a guide. Subject to codes of country having jurisdiction.) Figure 6 This installation NOT approved in Canada Gas Vent Gable Vent Gas Vent Ventilated Attic Â Â Â Â Â Â Â Â Â Top Above Insulation a lternate Inlet Air (1) Gable Vent Â...
Page 12 standard method permits indoor air to be used for combustion and Indoor Combustion Air (Unconfined Space) ventilation air. WARNING The Known Air Infiltration Rate Method shall be used if the infiltration rate is known to be less than 0.40 air changes per hour CARBON MONOXIDE POISONING HAZARD (ACH) and equal to or greater than 0.10 ACH.
Page 13 WARNING openings in doors or floors having a total minimum free area of 2 in. /1,000 BTUH (44 cm /kW) of total input rating of all appliances. CARBON MONOXIDE POISONING HAZARD • An attic or crawl space may be considered a space that freely Failure to follow the steps outlined below for each communicates with the outdoors provided there are adequate appliance connected to the venting system being...
Page 14: Vent & Combustion Air Piping
Vent and Combustion Air Piping WARNING Applicable ASTM Standards for Vent Materials Cell Sch. 40 Solv. CARBON MONOXIDE POISONING HAZARD Materials Core Fittings Primer Pipe Pipe Cement Pipe Failure to follow this warning could result in D2468 personal injury or death. D1527 F628 &...
Page 15 12. The minimum vent length is 5′ (1.5m) of PVC. Pipe Diameter Table Table 3 13. The piping can be run in the same chase or adjacent to *9MPX Model supply or vent pipe for water supply or waste plumbing. It 60,000 BTUH Furnaces can also be run in the same chase with a vent from another 10′...
Page 16 Figure 8 Direct Vent Termination Clearance U.S. Installation (2) Item Clearance Description Canadian Installation (1) Clearance above grade, veranda, porch, deck, balcony, or 12″ (30cm) # 12″ (30 cm) anticipated snow level 12″ (30 cm) for appliances u 10,000 Btuh (3 kW) and v 9″...
Page 17 Figure 9 Other than Direct Vent Termination Clearance Item Clearance Descriptions Canadian Installation (1) U.S. Installation (2) Clearance above grade, veranda, porch, deck, balcony, or 12″ (30cm) # 12″ (30 cm) anticipated snow level 12″ (30 cm) for appliances u 10,000 Btuh (3 kW) and v Clearance to a window or door that may be opened 4′...
Page 18 CAUTION Condensate Drain Trap This furnace removes both sensible and latent heat from the FROZEN AND BURST WATER PIPE HAZARD products of combustion. Removal of the latent heat results in condensation of the water vapor. The condensate is removed from Failure to follow this caution may result in property the furnace through the drains in the plastic transition and the vent damage.
Page 19 Figure 11 Upflow Installations Top Vent On Some Models ONLY Plastic Caps (2) Yellow or black Coupling & Clamps (Optional) Vent Drain & Clamps Dual Pressure Switch Detail Drain Tee Relief Tube Black Rubber (4.8mm) ID Drain Tube Black Rubber , (12.7mm) ID &...
Page 20 Figure 12 Upflow Installations Vent through Left Side Plastic Cap Yellow or black 2, (50.8mm) PVC On Some Models ONLY Coupling Coupling & Clamps (Optional) Either: The PVC Drain Tee or a field Vent Drain supplied 2, & Clamps (50.8mm) PVC Tee Relief Tube Dual Pressure Switch Detail Black Rubber...
Page 21 Figure 13 Downflow Left−Side Vent and Trap SIDE VIEW Plastic Cap Yellow or black Rotate downward 55 to 105 Coupling & Clamps (Optional) 2, (50.8mm) PVC NOTE: Built-in channel will Vent Drain Coupling be angled 5° to 10° also. & Clamps Either: The PVC Drain Tube Drain Tee or a field...
Page 22 Figure 14 Downflow Right−Side Vent and Trap Plastic Cap Trap Connection Yellow or black “Clamp ears” Pointed OUT Elbow Tube Black Rubber Vent Drain , (12.7mm) ID & Clamps & Clamps Relief Tube Preassemble & (Loose Parts Bag) Black Rubber insert into furnace SIDE VIEW , (4.8mm) ID...
Page 23 Figure 15 All Models Vent through Right Side Plastic Cap Yellow or black On Some Models ONLY Either: The PVC Drain Relief Tube Tee or a field supplied Black Rubber 2, (50.8mm) PVC Tee Vent Drain , (4.8mm) ID & Clamps Single Pressure Switch Detail 2, (50.8mm) Dual...
Page 24 Figure 16 Horizontal Left through Top Single Pressure Switch Detail Vent Drain Plastic Caps & Clamps Yellow or black Trap Connection “Clamp ears” Pointed OUT Alternate Orientation Preassemble & insert into furnace Relief Tube Black Rubber , (4.8mm) ID Dual Pressure Switch Flexible tubing connector , (4.8mm) OD (Loose Parts Bag)
Page 25 Figure 17 Horizontal Left−Side Vent Single Pressure Switch Detail Trap Connection Alternate Orientation “Clamp ears” Pointed OUT Yellow or black Plastic Cap Preassemble & insert into furnace Field Supplied Tee Level or Sloped towards Tee Vent Drain Dual Pressure Switch &...
Page 26 Figure 18 Horizontal Right through Top Single Pressure Switch Detail Alternate , (4.8mm) ID Orientation Trap Connection Rubber Tube Plastic Cap AIRFLOW Yellow or black “Clamp ears” Pointed OUT Coupling & Clamps Preassemble & (Optional) insert into furnace Field WARNING Vent Drain Supplied Tee &...
Page 27 Figure 19 Horizontal Right−Side Vent Plastic Cap Yellow or black AIR FLOW Coupling & Clamps (Optional) Vent Drain Field & Clamps Single Pressure Switch Detail Supplied Tee Level or Sloped towards Tee Tee Trap White PVC (loose parts bag) Relief Tube Black Rub Elbow Tube , (4.8mm) ID Black Rubber...
Page 28 Connecting Vent and Combustion Air Piping Connecting Tee Trap to Condensate Figure 20 WARNING Trap and Main Drain Line CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury or death. Cement or mechanically seal all joints, fittings, etc. to prevent leakage of flue gases.
Page 29: Direct Vent
After checking pipe and socket for proper fit, wipe socket Proper Sealing Procedure for and pipe with cleaner-primer. Apply a liberal coat of primer Figure 21 Combustion Blower to inside surface of socket and outside of pipe. Do NOT allow primer to dry before applying cement. Apply a thin coat of cement evenly in the socket.
Page 30 Check hole sizes by making sure it is smaller than the Recommended Alternate Installation couplings or elbows that will be installed on the outside. The Figure 24 for Sustained Cold Weather [05 F(-175C) & below for 24 couplings or elbows MUST prevent the pipe from being hours or more consecutive hours] pushed back through the wall.
Page 31 Multi Vent Termination Clearances Sidewall Inlet Vent and Exhaust− Figure 28 Air Termination When two (2) or more furnaces are vented near each other, each furnace must be individually vented. Two (2) vent terminations may be installed as shown in Figure 26, “A”...
Page 32: Concentric Vent Termination
Concentric Termination Consignes spéciales pour l’installation de ventillation au Vent Termination Clearances Canada WARNING L’installation faite au Canada doit se conformer aux exigences du code CSA B149. Ce systême de ventillation doit se CARBON MONOXIDE POISONING, FIRE AND composer de tuyaux, raccords, ciments et apprêts conformes EXPLOSION HAZARD au ULC S636.
Page 33 Vertical & Horizontal Termination Figure 33 Concentric Vent Dimensional Drawing Determine the pipe diameters required for the installation B PVC from Table 4 and Figure 33. Vent/Exhaust Determine the best location for the termination kit. See Figure 32 for vertical termination or Figure 36 for horizontal termination.
Page 34: Gas Supply And Piping
Rain Cap to Vent Pipe Assembly Concentric Vent and Combustion− Figure 34 Figure 35 Air Side Termination Drill clearance hole in rain Roof Overhang cap and pilot hole in vent pipe. 12″ (304.8mm) min. 1″ (25.4mm) max. Stainless steel screw 25-22-02 (Field supplied) Combustion...
Page 35 • NOTE: Refer to Figure 37 and Figure 38 for the general layout at Do not allow minimum supply pressure to vary downward. Doing so will decrease input to furnace. Refer to Table 5 for the furnace. The rules listed apply to natural and Propane gas pipe Gas supply.
Page 36 Typical Gas Piping for Downflow Figure 38 Use elbows and 3, (76.2mm) pipe nipple to connect valve to piping when using left side gas pipe entry. Propane Low pressure switch. Optional Propane conversion. Manual shut-off valve Alternative installation Drip Leg and Union, Union* should be outside the cabinet. Manual shut−off valve MUST be upstream of dripleg, union, and furnace.
Page 37 Table 6 NATURAL GAS MANIFOLD PRESSURE (in wc) 20,000 BTU per burner* MEAN ELEVATION FEET ABOVE SEA LEVEL ft (m) 0 to 2000 2001 to 3000† 3001 to 4000 4001 to 5000 5001 to 6000 6001 to 7000 7001 to 8000 HEATING (0 to 610) (610.1 to 914)†...
Page 38 For operation with Propane gas, gas orifices MUST be Natural Gas Input Rating Check changed and manifold pressure MUST be maintained as per Table 7. Orifices can be ordered through our distributor. SEE CHECKS AND ADJUSTMENTS, Natural Gas Input Rating (See Figure 39) Check in this manual.
Page 39: Electrical Wiring
Electrical Wiring WARNING before recording the AC amperage reading. Set anticipator on thermostat to recorded value. ELECTRICAL SHOCK HAZARD Optional Equipment Failure to follow this warning could result in All wiring from furnace to optional equipment MUST conform to personal injury or death. local codes or, in the absence of local codes with the latest edition Turn OFF electrical power at fuse box or service of The National Electric Code, ANSI NFPA 70 and/or The...
Page 40: Ductwork And Filter
Furnace Control Fuse Electrical Connections Figure 40 The 24V circuit contains a 5−amp, automotive−type fuse located on furnace control. (See Figure 41) Any electrical shorts of 24V NOTE: Junction Box can be mounted to either the left or right wiring during installation, service, or maintenance may cause fuse side.
Page 41 Bottom returns can be made by removing the knockout Side Mounted Filter Rack Figure 43 panel in the furnace base. Do NOT remove knock-out except for a bottom return. Installation of locking-type dampers are recommended in all branches, or in individual ducts to balance system’s air flow. Non-combustible, flexible duct...
Page 42 Combustible Floor Installation Figure 46 Standoff Filter Rack WARNING FIRE HAZARD Using Optional Failure to follow this warning could result in Standoff Filter personal injury, death, and/or property damage. Rack Place furnace on noncombustible subbase on downflow applications, unless installing on non−combustible flooring.
Page 43: Checks And Adjustments
Exploded View of Sub−Base for Exploded View of Base for Figure 47 Figure 48 Furnace ONLY Downflow Cased Coil A = 4 1/4” (108mm) Minimum clearance from back of hole to wall or other obstruction. Plenum 2″ (50.8mm) ″ (63.5mm) 1″...
Page 44: Main Burner Flame Check
Remove the burner compartment door. Example (kW) Remove the blower compartment door. Place a jumper Number of Number of across furnace controls R to W. Replace blower seconds per Size of test dial seconds per kW m compartment door. complete (.05m hour rotation...
Page 45: Furnace Maintenance
Operate furnace continuously for 15 minutes with all Change the heat or cool blower motor speed by removing registers and duct dampers open. the motor lead from the “Heat” or “Cool” terminal and replace it with the desired motor speed lead from the Take reading and compare with range specified on rating “Unused Motor Lead”...
Page 46: Sequence Of Operation & Diagnostics
Sequence of Operation & Diagnostics The following is the normal operating sequence. Cooling (Y) Request: 24VAC signals applied to Y & G terminals of FCB (furnace control board) • Cool motor speed is energized after 5 second Cool Fan On Delay time. Y &...
Page 47 Heating Request with Gas Shut Off: 24 VAC signal applied to W terminal of FCB. The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours then try for ignition again as long as the heat call remains. Power reset will clear lockout.
Page 48: Wiring Diagram
Wiring Diagram (*9MPX) Specifications are subject to change without notice. 440 01 1051 02...
Page 49 95% Furnace Upflow/Horizontal/Downflow Models Dual Certified *9MPX060F12A2 *9MPX080J12A2 *9MPX080J16A2 *9MPX100L20A2 * Denotes Brand International Comfort Products, LLC Lewisburg, TN 37091 U.S.A. Save This Manual For Future Reference Specifications are subject to change without notice 440 01 1051 02...
Page 50: Technical Support
Model Specifications (*9MPX) TECHNICAL SUPPORT Manufacturers Number (Mfr No −See Rating Plate) ALL Models Specifications (*9MPX) *9MPX060F12A *9MPX080J12A *9MPX080J16A *9MPX100L20A General Gas Type Nat./Propane Nat./Propane Nat./Propane Nat./Propane Input (Btuh) Upflow 60,000 80,000 80,000 100,000 Downflow/Horizontal 60,000 80,000 80,000 97,500 Output (Btuh) Upflow 58,000 77,000...
Page 51 CIRCULATION AIR BLOWER DATA (CFM & L/s) *9MPX060F12 (1)(2) * Denotes Brand *9MPX080J16 (1)(2) * Denote Brand Speed Speed MED H MED L MED H MED L in wc in wc 1478 1204 2032 1690 1246 1418 1154 1952 1650 1250 1350 1103...
Page 52: Parts Replacement Information Guide
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the “Heating Equipment“ or “Air Conditioning Contractors and Systems” headings for dealer listing by brand name, or contact: International Comfort Products, LLC Consumer Relations Department P.O. Box 128 Lewisburg, TN 37091, USA 931−270−4100...

This manual is also suitable for:

H9mpx T9mpx

International comfort products C9MPX Installation Instructions Manual

Quick Links

INSTALLATION INSTRUCTIONS

TABLE OF CONTENTS

Related Manuals for International comfort products C9MPX

Summary of Contents for International comfort products C9MPX

This manual is also suitable for:

Table of Contents