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.

Category IV, Gas Furnace

T9MPV, C9MPT, H9MPT, T9MPT

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

National

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.

standards

Canada

440 01 2024 04 Dec. 2010

Table of Contents

Need help?

Do you have a question about the C9MVX and is the answer not in the manual?

Questions and answers

Summary of Contents for International comfort products C9MVX

Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 90+ Two−Stage & Two−Stage, Variable Category IV, Gas Furnace C9MVX, H9MVX, T9MVX, C9MPV, H9MPV, T9MPV, C9MPT, H9MPT, T9MPT (Upflow/Downflow/Horizontal) These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE...
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 Sheets
START−UP CHECK SHEET For PSC Models *9MPT (This sheet is optional. Keep for future reference.) Date of Start−Up: Calculated Input (BTU) Rate: (See Checks Adjustments Section). Dealer Name: Heating Check Address: Measured Line Pressure During High Heat: City, State(Province), Zip or Postal Code: Measured Manifold Pressure: High Heat Low Heat...
Page 4 START−UP CHECK SHEET For Variable Speed Models *9MPV, *9MVX (This sheet is optional. Keep for future reference.) Date of Start−Up: Calculated Input (BTU) Rate: (See Checks Adjustments Section). Dealer Name: Heating Check Address: Measured Line Pressure During High Heat: City, State(Province), Zip or Postal Code: Measured Manifold Pressure: High Heat Low Heat...
Page 5: 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 6: Safety Rules
• When a furnace is installed so that supply ducts carry air Frozen Water Pipe Hazard circulated by the furnace to areas outside the space CAUTION containing the furnace, the return air shall also be handled by a duct(s) sealed to the furnace casing and terminating outside the space containing the furnace.
Page 7: 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 follow this warning could result in Coupling on ends of 20′ (6.1m) Max. personal injury or death.
Page 8: 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 9 Consignes spéciales pour l’installation de ventillation au Horizontal Furnace Installation Canada L’installation faite au Canada doit se conformer aux exigences du Figure 3 Typical Horizontal Installation code CSA B149. Ce systême de ventillation doit se composer de tuyaux, raccords, ciments et apprêts conformes au ULC S636. La Inlet Pipe (not used on Single Pipe model) tuyauterie de ventillation des gaz, ses accessoires, le terminal concentrique mural ainsi que l’ensemble du drain de condensat...
Page 10 Figure 4 Dimensions and 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) FRONT ALL SIDES Of SUPPLY PLENUM 1″...
Page 11: Combustion & Ventilation Air
Knock Outs 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 12 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 Top Above Insulation Â Â Â Â Â Â Â Â Â É...
Page 13 (ACH) and equal to or greater than 0.10 ACH. Infiltration rates Indoor Combustion Air (Unconfined Space) greater than 0.60 ACH shall not be used. The minimum required Standard and Known-Air-Infiltration Rate Methods volume of the space varies with the number of ACH and shall be W NFPA &...
Page 14 The following requirements apply to the Standard Method and to the Known Air Infiltration Rate Method. Figure 7 Vent Check • Adjoining rooms can be considered part of a space, if there are no closable doors between rooms. • An attic or crawl space may be considered a space that freely Vent Pipe Draft Hood communicates with the outdoors provided there are adequate...
Page 15: Vent And Combustion Air Piping
factory−built or masonry chimney. If this furnace is replacing a For Two Pipe Installation previously common-vented furnace, it may be necessary to resize (Direct Vent) the existing vent and chimney to prevent oversizing problems for the other remaining appliance(s). See “Venting and Combustion This furnace can NOT be common vented or connected to any type Air Check”...
Page 16 10. All horizontal pipe runs MUST be supported at least Use of Elbows−Two 45° elbows can be substituted for one every five feet with galvanized strap or other rust 90° elbow. The elbow or elbows used for vent termination resistant material. NO sags or dips are permitted. outside the structure ARE counted, including elbows 11.
Page 17 Figure 8 Direct Vent Termination Clearance Item Clearance Description 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 9″...
Page 18 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 19 DO NOT trap the drain line in any other location than at the Condensate Drain Trap condensate drain trap supplied with the furnace. This furnace removes both sensible and latent heat from the If possible, DO NOT route the drain line where it may freeze. The products of combustion.
Page 20 Figure 11 Upflow Installations Top Vent On Some Models ONLY Plastic Caps (2) Yellow or black Coupling & Clamps (Optional) Vent Drain & Clamps Single Pressure Switch Dual Pressure Switch Detail Relief Tube Black Rubber (4.8mm) ID Drain Tee Drain Tube Black Rubber , (12.7mm) ID &...
Page 21 Figure 12 Upflow Installations Vent through Left Side Plastic Cap Yellow or black On Some Models ONLY 2, (50.8mm) PVC Coupling Coupling & Clamps (Optional) Vent Drain & Clamps Either: The PVC Drain Tee or a field Single Pressure Switch supplied 2, (50.8mm) PVC Tee Dual Pressure Switch Detail...
Page 22 Figure 13 All Models Vent through Right−Side Plastic Cap Yellow or black On Some Models ONLY Dual Pressure Switch Either: The PVC Drain Vent Drain Tee or a field supplied & Clamps Relief Tube 2, (50.8mm) PVC Tee Black Rubber , (4.8mm) ID Single Pressure Switch Details 2, (50.8mm)
Page 23 Figure 14 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 24 Figure 15 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 25 Figure 16 Horizontal Left through Top Single Pressure Switch Detail Vent Drain Plastic Caps Trap Connection & Clamps Yellow or black “Clamp ears” Pointed OUT Preassemble & Alternate Orientation insert into furnace Relief Tube Black Rubber , (4.8mm) ID Dual Pressure Switch Flexible tubing connector , (4.8mm) OD (Loose Parts Bag)
Page 26 Figure 17 Horizontal Left−Side Vent Single Pressure Switch Detail Alternate Orientation Yellow or black Plastic Cap Field Supplied Tee Level or Sloped towards Tee Vent Drain Dual Pressure Switch & Clamps Relief Tube Black Rub , (4.8mm) ID , (12.7mm) Elbow Tube Black Rubber AIR FLOW ID &...
Page 27 Figure 18 Horizontal Right through Top Alternate Orientation Single Pressure Switch Detail , (4.8mm) ID Rub Trap Connection ber Tube Plastic Cap “Clamp ears” AIR FLOW Yellow or black Pointed OUT Coupling & Clamps Preassemble & (Optional) insert into furnace Drain Tube Black , (12.7mm) Rubber...
Page 28 Figure 19 Horizontal Right−Side Vent Plastic Cap Yellow or black Coupling & Clamps Single Pressure Switch Detail (Optional) Trap Connection AIR FLOW “Clamp ears” Pointed OUT Field Vent Drain Supplied Tee & Clamps Preassemble & Level or Sloped insert into furnace towards Tee Tee Trap White PVC...
Page 29 Refer to Figure 11 through Figure 19 that corresponds to the Connecting Tee Trap to Condensate Figure 20 installation position of the furnace for the application. Trap and Main Drain Line Preassemble the vent and combustion air piping from the furnace to the vent termination.
Page 30 Install all couplings, nipples and elbows using proper Joining Pipe and Fittings procedures for Joining Pipe and Fittings and maintain SEE VENT AND COMBUSTION AIR PIPING, Vent and spacing between vent and combustion air piping as Combustion Air Piping Guidelines in this manual for applicable indicated in Figure 22 through Figure 30.
Page 31 If the vent system is installed in an existing chimney make Rooftop Termination sure clearances shown in Figure 25 are maintained. Figure 25 Horizontal section before the termination elbow can be extended on the inlet air to provide necessary clearance. Sidewall Termination with Exterior Figure 23 Risers to Get Above Snow Level or Grade...
Page 32: Concentric Vent Termination
Concentric Vent and Combustion−Air Sidewall Inlet Vent and Exhaust−Air Figure 27 Figure 29 Sidewall Termination Termination with Exterior Risers 8, (203.2mm) Min. 8, (203.2mm) Min. 204 (6.1m) Max. 1, (25.4mm) Maximum Combustion Air Exhaust 12, (457.2mm) Vent Min. Grade or Inlet Snow Level “A”...
Page 33: Gas Supply And Piping
Gas Supply and Piping WARNING When flexible connectors are used, the maximum length shall not exceed 36″ (915 mm). When lever handle type manual equipment shutoff FIRE AND EXPLOSION HAZARD valves are used, they shall be T−handle valves. Failure to follow this warning could result in The use of copper tubing for gas piping is NOT approved personal injury, death and/or property damage.
Page 34 Figure 31 Typical Gas Piping for Upflow Vent Pipe Grommet Drip Leg and Union, Union* should be outside the (Single Pipe) cabinet. Manual shut−off valve MUST be upstream of dripleg, union, and furnace. Manual shut-off 3, (76.2mm) valve pipe nipple Use elbows and 3, (76.2mm) pipe nipple to connect valve to piping when using right side gas pipe entry.
Page 35 General Derating Rules High Altitude Input Rate = Nameplate Sea Level Input Rate x (Multiplier) *{ These furnaces may be used at full input rating when High Altitude Multiplier Elevation installed at altitudes up to 2,000′ (609.6m). When installed ft (m) above 2,000′...
Page 36 NATURAL GAS MANIFOLD PRESSURE (in wc) 20,000 BTU per burner Table 8 MEAN ELEVATION 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 609.6) (914.7 to 1219.2) (1219.5 to 1524)
Page 37: Electrical Wiring
The burner orifice part nos. are as follows: Final Gas Piping Check Orifice Part # Orifice Part # The furnace and the equipment shut off valve must be 1096942 1011351 disconnected from the gas supply piping system during any 1011377 1011352 pressure testing of that system at test pressures in excess ″...
Page 38: Optional Equipment
unit maximum amps stated on the rating plate. Add the full load Cooling amps for potential field−installed accessories such as electronic *9MPT air cleaners and humidifiers that would receive power from the furnace control board. The furnace control board is rated for a If cooling is used, the Y and G from the thermostat must be maximum of 1.0 amps combined for EAC and HUM.
Page 39: Ductwork And Filter
Tap Select Interface Board (*9MPV, *9MVX) Electrical Connections Figure 34 The Tap Select Interface Board is used with the Variable Speed motor. There are DIP switches (SW2) for continuous blower adjust, NOTE: Junction Box can be mounted to either the left or right side. heating blower adjust, cooling blower adjust and cooling on/off delay profiles.
Page 40 NOTE: Disposable, low velocity filters may be replaced with Connections washable, high velocity filter providing they meet the minimum size NOTE: Return air can enter through either side, both sides, the areas. Washable, high velocity filters can be replaced ONLY with bottom or a side and the bottom.
Page 41 Downflow Furnace Installation Standoff Filter Rack Figure 40 Non-Combustible Floor Installation Fabricate a plenum to the dimensions given in Table 11, for the furnace outlet. Plenum should be flanged, approximately ″ (19.1mm)for support. Note: The three(3) screws in the top panel of the furnace next to the duct flange MUST be removed to provide serviceability of the Using primary heat exchangers in the downflow installation...
Page 42 The Subbase for Combustible Floors MUST be used when a Figure 43 downflow furnace is set on a combustible floor, even when the Setting the Subbase furnace is installed on a coil box. Cut the opening in the floor according to Table 11. The hole Furnace in the floor must be cut to the dimensions listed in Table 11 since the base is equipped with locating tabs that center the...
Page 43: Checks And Adjustments
Checks and Adjustments Verify the input rate of the furnace. NOTE: Typical Gas Control Valve Honeywell Figure 45 WARNING Regulator FIRE OR EXPLOSION HAZARD Adjustment Under Cap Failure to follow this warning could result in personal injury, death and/or property damage. HONEYWELL Turn OFF gas at shut off before connecting manometer.
Page 44: Main Burner Flame Check
Operate furnace on High Heat for 10 minutes with all the Example (kW) registers and duct dampers open by using a jumper wire on Number of R to W1 and W2 thermostat connections on the furnace Number of seconds per Size of test dial seconds per kW m...
Page 45 Change the heat or cool blower motor speed by removing the Blower Adjustments (*9MPV, *9MVX) motor lead from the “HI HEAT or LO HEAT” or “COOL” terminal and replace it with the desired motor speed lead from Changing Blower Speed the “M1”...
Page 46: Furnace Maintenance
Variable Speed (*9MPV, *9MVX) Tap Select Interface Board (TSIB) Figure 48 Furnace Maintenance WARNING WARNING ELECTRICAL SHOCK, FIRE OR EXPLOSION FIRE, EXPLOSION, OR CARBON MONOXIDE HAZARD HAZARDS Failure to follow this warning could result in Failure to have the furnace inspected and personal injury, death, and/or property damage.
Page 47: Sequence Of Operation & Diagnostics (*9Mpt)
Sequence of Operation & Diagnostics (*9MPT) The following is the normal operating sequence at factory default settings (SW1 OFF/ON/OFF) Cooling (Y) Request: 24VAC signals applied to Y/Y2 & G terminals of FCB (furnace control board). • Cool motor speed is energized after 5 second Cool Fan On Delay time. Y/Y2 &...
Page 48 Heating Request with Gas Shut Off: 24 VAC signal applied to W1 terminal of FCB. The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours, and then try for ignition again as long as the heat call remains.
Page 49: Wiring Diagram *9Mpt (Two-Stage Heating With Psc Motor)
Wiring Diagram *9MPT (Two−Stage Heating with PSC Motor) 440 01 2024 04 Specifications are subject to change without notice.
Page 50: Sequence Of Operation & Diagnostics (*9Mpv, *9Mvx)
Sequence of Operation & Diagnostics (*9MPV, *9MVX) The following is the normal operating sequence at factory default settings (SW1 OFF/ON/OFF, SW2 all OFF) NOTE: SW1 DIP switches (G, Y/Y2, W1, W2 thermostat terminals) and DEHUM (1/4” male quick connect terminal) are located on the FCB.
Page 51 • The fan runs at its present speed. • The blower de−energizes after the selected Heat Fan Off Delay time expires timed from the gas valve de−energizing. NOTE 5) If a new Heating request arrives while the control is waiting for the Heat Fan Off Delay time to expire, the FCB will wait for the selected Heat Fan Off Delay, and then start a new heating cycle.
Page 52: Wiring Diagram *9Mpv, *9Mvx (Variable Speed Blower Motor)
Wiring Diagram *9MPV, *9MVX (Variable Speed Blower Motor) 440 01 2024 04 Specifications are subject to change without notice.
Page 53: Thermostat Wiring Guide
Thermostat Wiring Guide 1. These diagrams are for reference. See thermostat 8. 24V HUM terminal on furnace control is used to power wiring instructions for specific terminal assignments, a humidifier (on call for heat and pressure switch connections or operation. closed) if no HUM thermostat option is available.
Page 54 No HUM and/or DEHUM Terminal available from thermostat. Humidifier Wiring (*9MPT, *9MPV, Figure 51 *9MVX) Dehumidify wiring (*9MPV & *9MVX Models only) TSIB NOTE 5 NO CONNECTION NO CONNECTION NOTE 11 TWO-STAGE or VS FURNACE CONTROL SINGLE-STAGE THERMOSTAT NOTE 7 OPTIONAL SINGLE-STAGE OPTIONAL...
Page 55 NOTE 3, 9, 10 DEHUM DEHUM Connect 1 to Y/Y2 for 1-stage AC- HP applications 24V HUM OPTIONAL HUMIDIFIER 24V in NOTE 2 International Comfort Products, LLC Lewisburg, Tennessee 37091 USA 440 01 2024 04 Specifications are subject to change without notice.

This manual is also suitable for:

H9mpv C9mpv T9mpv C9mpt H9mpt T9mpt ... Show all

International comfort products C9MVX Installation Instructions Manual

Quick Links

TABLE OF CONTENTS

Need help?

Questions and answers

Summary of Contents for International comfort products C9MVX

Page 1: Table Of Contents

Page 3: Start-Up Check Sheets

Page 5: Safety Considerations

Page 6: Safety Rules

Page 7: Installation

Page 8: Installation Requirements

Page 11: Combustion & Ventilation Air

Page 15: Vent And Combustion Air Piping

Page 32: Concentric Vent Termination

Page 33: Gas Supply And Piping

Page 37: Electrical Wiring

Page 38: Optional Equipment

Page 39: Ductwork And Filter

Page 43: Checks And Adjustments

Page 44: Main Burner Flame Check

Page 46: Furnace Maintenance

Page 47: Sequence Of Operation & Diagnostics (*9Mpt)

Page 49: Wiring Diagram *9Mpt (Two-Stage Heating With Psc Motor)

Page 50: Sequence Of Operation & Diagnostics (9Mpv, 9Mvx)

Page 52: Wiring Diagram 9Mpv, 9Mvx (Variable Speed Blower Motor)

Page 53: Thermostat Wiring Guide

This manual is also suitable for:

International comfort products C9MVX Installation Instructions Manual

Quick Links

TABLE OF CONTENTS

Need help?

Questions and answers

Related Manuals for International comfort products C9MVX

Summary of Contents for International comfort products C9MVX

This manual is also suitable for:

Table of Contents