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)
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