ICP N9MP1 User Manual

90 SingleStage
CategoryIVFurnace
N9MP1 & N9MP2
*9MPD *Denotes Brands (C, H, T)
FANASSISTED,DIRECTOR
NON-DIRECTVENTGASFURNACE
SAFETY REQUIREMENTS
Recognize safety information. This is the safety- alert symbolZ_. 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. CAUTIONis used to identify unsafe practices that could result in minor personal injury or product and property damage. Note is used to
highlight suggestions that will result in enhanced installation, reliability, or operation.
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 tothecurrent edition of the National Standard of Canada Natural Gas and Propane Installation
Code (NSCNGPIC) CSA B149.1-05. 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.
International Comfort Products, LLC
Lewisburg, TN 37091 U.S.A.
Table of Contents
INSTALLER: Affix these instructions
on or adjacent to the furnace.
CONSUMER: Retain these
instructions for future reference.
1.SafeInstallationRequirements................. 3
2.Installation ................................ 4
3.Combustion & Ventilation Air .................. 8
4.Vent& Combustion Air Piping ................ 12
5.GasSupply and Piping ...................... 30
6.ElectricalWiring ........................... 37
7. Ductwork and Filter ........................ 37
8. Checks and Adjustments .................... 39
9. Furnace Maintenance ....................... 42
10. Sequence of Operation & Diagnostics .......... 44
11. Concentric Vent Termination ................. 45
Tech Support and Parts ........................ 47
ELECTRIC SHOCK HAZARD
Failure to follow safety
warnings exactly could result
in serious injury and/or death.
Turn Off All Power Before
Servicing.
CARBON MONOXIDE POISONING AND FIRE
HAZARD.
Failure to follow safety warnings exactly could
result in serious injury, death, and/or property
damage.
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.
PrintedinU.S.A. 11/28/2005 440 01 1021 (02)

ICP N9MP1 Specifications

General

Stages	Single Stage
Blower Motor	Multi-Speed
Cabinet	Heavy-Gauge Steel
Heat Exchanger Material	Aluminized Steel
Fuel Type	Natural Gas

Summary

1. Safe Installation Requirements

2. Installation

3. Combustion & Ventilation Air

Outdoor Combustion Air Method

Requirements for providing outdoor air for combustion and ventilation in specific spaces.

Indoor Combustion Air

Guidelines for using indoor air for combustion and ventilation under specific conditions.

Venting and Combustion Air Check

Procedure to ensure proper venting and combustion air for appliances.

4. Vent and Combustion Air Piping

Contaminated Combustion Air

Evaluating and addressing exposure to chemicals that may harm the furnace.

Sizing Combustion Air and Vent Pipe

Instructions on selecting the correct diameter for exhaust and combustion air piping.

Vent and Combustion Air Piping Guidelines

Guidelines for installing vent and combustion air piping, including material selection.

Figure 8 Direct Vent Termination Clearance

Direct Vent Termination Clearance

Clearances for direct vent termination based on location and appliance type.

Figure 9 Other than Direct Vent Termination Clearance

Other than Direct Vent Termination Clearance

Clearances for non-direct vent terminations based on location and appliance type.

Figure 19 Connecting Tee Trap to Condensate Trap and Main Drain Line

Connecting Vent and Combustion Air Piping

Procedures for properly sealing vent and combustion air piping to prevent leaks.

Figure 20 Proper Sealing Procedure for Combustion Blower

Joining Pipe and Fittings

Guidelines and warnings for joining pipe and fittings using solvent cement.

Connecting Vent Pipes and Termination

Procedures for connecting vent pipes and ensuring proper termination clearances.

Figure 21 Sidewall Termination 12" or More Above Snow Level or Grade Level

Sidewall Termination 12" or More Above Snow Level or Grade Level

Figure 25 Concentric Vent and Combustion-Air Sidewall Termination

Concentric Vent and Combustion-Air Sidewall Termination

Figure 26 Sidewall Inlet Vent and Exhaust-Air Termination

Sidewall Inlet Vent and Exhaust-Air Termination

Figure 28 Rooftop Inlet Vent and Exhaust-Air Termination

Rooftop Inlet Vent and Exhaust-Air Termination

5. Concentric Termination

Vent Termination Clearances

Required clearances for concentric vent termination based on location and height.

Vertical & Horizontal Termination

Concentric Vent Termination - Kit # NAHA001CV & NAHA002CV

Details on concentric vent termination kits for gas-fired condensing furnaces.

6. Gas Supply and Piping

Gas Piping Requirements

Guidelines for properly sizing and installing gas supply pipes according to codes.

Supply Pressure

Table 8 NATURAL GAS MANIFOLD PRESSURE (" w.c.)

Natural Gas Manifold Pressure and Orifice Size for High Altitude Applications

Manifold pressure and orifice sizes for natural gas at various altitudes.

Table 9 LPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.)

LPG or Propane Gas Manifold Pressure

Manifold pressure and orifice sizes for LPG/Propane gas at various altitudes.

Table 10 NATURAL GAS MANIFOLD PRESSURE (" w.c.) FOR THE 80,000 BTUH MODEL AND ALTERNATE INPUT MODELS

Natural Gas Manifold Pressure for 80,000 BTUH Model and Alternate Inputs

Manifold pressure data for the 80,000 BTUH model and alternate input models.

Table 11 LPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.) FOR THE 80,000 BTUH MODEL AND ALTERNATE INPUT MODELS

LPG or Propane Gas Manifold Pressure for 80,000 BTUH Model and Alternate Inputs

Manifold pressure data for LPG/Propane gas for the 80,000 BTUH model.

General Derating Rules

High Altitude Input Rate

Changing Orifices for High Altitude

7. Electrical Wiring

Power Supply Wiring

Requirements for electrically wiring and grounding the furnace according to codes.

Thermostat

8. Ductwork and Filter

Installation

Connections

Filters

Subbase for Combustible Floor

9. Checks and Adjustments

Startup

Temperature Rise Check

Procedure to check and set the correct air temperature rise through the furnace.

Gas Supply Pressure

Changing Blower Speed

Manifold Gas Pressure Adjustment

Steps to adjust manifold gas pressure with burners operating.

Main Burner Flame Check

Inspecting main burner flames for proper color, stability, and position.

10. Furnace Maintenance

11. Sequence of Operation & Diagnostics

Cooling (Y) Request:

Heating Request with Gas Shut Off:

Continuous Circulating Fan (G) Request:

Control Board Diagnostic Codes

Explanation of diagnostic codes indicated by the control board's LED.

Heating (W) Request: