ICP NTG3/FBF User Manual

80+
SingleStage
NTG3/FBF& NTC6/GNE
NTN3/NBF& NTN6/NNE
NDN3/NDF& NDN6/GDE
SAFETY REQUIREMENTS
/X
Recognize safety information. This is the safety-alert symbol/.v X. When you see this symbol on the furnace and in instructions manuals be
alert to the potential for personal injury.
UnderstandthesignalwordsDANGER, WARNING, orOAUTION. Thesewordsareusedwiththesafety-alertsymbol. DANGERidentifiesthe
most serious hazards, those that will result in severe personal injury or death. WARNINGsignifiesahazardthatoouldresultinpersonalinjury
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) NFPA No.
54/ANSIZ223.1. In Canada, refer to the current edition of the National Standard Canada CAN/CGA-B149.1- and .2-M91 Natural Gas and
Propane Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have fire extinguisher available during start-up and adjust-
ment 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.
Manufactured by:
International Comfort Products Corporation (USA)
Lewieburg, TN USA 37091
Contents
1.SafeInstallationRequirements................ 3
2.Installation............................... 4
3.Combustion&VentilationAir ................. 7
4.GasVentInstallation ....................... 9
5.HorizontalVenting ......................... 10
6.MasonryChimneyVentingwithOptionalKit ...... 11
7.GasSupplyandPiping...................... 12
8.ElectricalWiring ......................... 15
9. DuctworkandFilter (Upflow/Horizontal)...... 16
10. Ductworkand Filter (Downflow)............ 17
11. ChecksandAdjustments ................. 19
12. FurnaceMaintenance.................... 21
13. TechSupportand Parts .................. 22
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.
Printed in U.S.A. LP1 3/4/2002 441 01 2603 02

ICP NTG3/FBF Specifications

General

Brand	ICP
Model	NTG3/FBF
Category	Furnace
Language	English

Summary

Safety Requirements

Safe Installation Requirements

Safety Rules

Outlines unit safety, owner responsibilities, and hazard warnings.

Installation

Location and Clearances

Guidance on furnace placement and necessary clearances to surroundings.

Installation Requirements

Lists essential steps and conditions for installing the furnace correctly.

Combustion & Ventilation Air

Contaminated Combustion Air

Specifics on using outside air for combustion in contaminated environments.

Confined Space Installation

Procedures for providing air in areas with limited volume per BTU input.

Air Openings and Connecting Ducts

Requirements for air intake and exhaust openings and ductwork.

Gas Vent Installation

Category I Safe Venting Requirements

Key safety guidelines for Category I venting systems and compliance.

Ventilation Air

Building ventilation requirements for makeup air and temperature considerations.

Horizontal Venting

Venting Termination

Guidelines for terminating vent pipes horizontally through walls.

Masonry Chimney Venting with Optional Kit Upflow/Horizontal

Optional Masonry Vent Kit Draft Hood Assy. Installation

Step-by-step instructions for installing the masonry vent kit draft hood.

Vent Limit Switch Wiring

Details on wiring the vent limit switch for safety.

Gas Supply and Piping

Gas Supply Requirements

Essential requirements for connecting the gas supply to the furnace.

Operation Above 2000' Altitude

Instructions for adjusting input and pressure for high-altitude installations.

Changing Orifices

Procedure for replacing furnace orifices to match fuel and altitude conditions.

Gas Piping Requirements

Rules and recommendations for installing gas piping safely and correctly.

Final Check

Final inspection steps for gas piping and connections to ensure safety.

Electrical Wiring

Power Supply Wiring

Guidelines for connecting the furnace to the electrical power supply.

Thermostat

Instructions for thermostat installation and low-voltage wiring connections.

Optional Equipment

Wiring considerations for connecting optional accessories like humidifiers.

Ductwork and Filter (Upflow/Horizontal)

Duct Connections

How to properly connect the supply and return air ducts to the furnace.

Duct Design

Principles for designing efficient and quiet air distribution systems.

Duct Installation Requirements

Specific requirements for installing ductwork, including sealing and coil placement.

Ductwork and Filter (Downflow)

Sub-Bases for Combustible Floors - Furnace Only

Instructions for using sub-bases when installing on combustible flooring.

Sub-base for Combustible Floors- Downflow Coil Box

Specifics for sub-base installation when using a downflow coil box.

Checks and Adjustments

Startup

Procedures to follow for the initial startup of the furnace.

Gas Supply Pressure

How to check and verify the incoming gas supply pressure.

Manifold Gas Pressure Adjustment

Steps for adjusting the manifold gas pressure for proper burner operation.

Adjust Pilot Burner

Instructions on how to properly adjust the pilot burner flame.

Main Burner Flame Check

How to inspect and verify the main burner flames for correct operation.

Temperature Rise Check

Method for measuring the temperature difference between supply and return air.

Changing Blower Speed

Guide on how to select and change the blower motor speed taps.

Furnace Maintenance

Wiring Diagram NTG3/FBF, NTN3/NBF & NDN3/NDF

NTG3/FBF & NTN3/NBF

Wiring Diagram NTC6/GNE, NTN6/NNE & NDN6/GDE

NTC6/GNE & NTN6/NNE