ICP N92ESN User Manual

. 440 01 4542 00 11/18/19
INSTALLATION INSTRUCTIONS
Single--Stage, 35--in. (889 mm) Tall
High Efficiency Condensing Gas Furnace
N92ESN
(Series A)
NOTE: Read the entire instruction manual before starting the installation.
SECTIONS
SAFETY CONSIDERATIONS 4.........................
INTRODUCTION 5...................................
CODES AND STANDARDS 6...........................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 7...
ACCESSORIES 7.....................................
LOCATION 7........................................
AIR FOR COMBUSTION AND VENTILATION 8..........
CONDENSATE TRAP 11...............................
CONDENSATE DRAIN 14.............................
INSTALLATION 16...................................
AIR DUCTS 23.......................................
GAS PIPING 25......................................
ELECTRICAL CONNECTIONS 26.......................
VENTING 31........................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 53......
SERVICE AND MAINTENANCE PROCEDURES 61........
SEQUENCE OF OPERATION 71........................
PARTS REPLACEMENT GUIDE 73......................
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
Portions of the text and tables are reprinted from current edition of
NFPA 54/ANSI Z223.1, 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.
TABLES
Loose Parts Bag 6.....................................
Minimum Clearances to Combustible Materials 5.............
Minimum Free Area Required 9..........................
Minimum Space Volumes 9..............................
Opening Dimensions 19................................
Filter Size Information 20...............................
Air Delivery CFM 24...................................
Maximum Capacity of Pipe 25...........................
Electrical Data 27......................................
Vent Termination Kit for Direct Vent (2--Pipe) System 34.......
Maximum Equivalent Vent Length 43......................
Deductions from Maximum Equivalent Vent Length 43........
Maximum Allowable Exposed Vent Lengths Insulation 47......
Hangar Spacing 49.....................................
Combustion--Air Vent Pipe, Fitting & Cement Material.. 51.....
Altitude Derate Multiplier for U.S.A. 54....................
Blower Off Delay Setup Switch 56........................
Orifice Size and Manifold Pressure 58.....................
Gas Rate 61..........................................

ICP N92ESN Specifications

General

Brand	ICP
Model	N92ESN
Category	Furnace
Fuel Type	Natural Gas
AFUE	92.1%
Stages	Single Stage

Summary

Safety Considerations

WARNING (Fire, Explosion, Electrical Shock, and Carbon Monoxide Poisoning Hazard)

General safety warnings for operation, injury, death, property damage.

Introduction

Important Installation and Start-up Procedures

May result in nuisance smoke/odor complaints; check manifold pressure, temp rise.

Codes and Standards

Safety Standards

Compliance with NFGC, ANSI/NFPA 90B, NSCNGPIC for gas appliances.

Installation Standards

Compliance with NFGC, NFPA 90B, NSCNGPIC for general installation.

Combustion and Ventilation Air

Requirements for air supply per NFPA 54/ANSI Z223.1 and CAN/CSA B149.1.

Gas Piping and Pressure Testing

Installation and testing requirements per NFGC, NSCNGPIC.

Electrical Connections

Compliance with NEC, CSA C22.1 for electrical hookups.

Electrostatic Discharge (ESD) Precautions Procedure

Carbon Monoxide Poisoning / Component Damage Hazard (Warning)

Corrosive air may cause heat exchanger failure.

Air for Combustion and Ventilation

Furnace Corrosion Hazard (Caution)

Air for combustion must not be contaminated by halogen compounds.

Carbon Monoxide Poisoning Hazard (Warning)

Exhaust fans can create negative pressure; provide make-up air.

Outdoor Combustion Air Method

Standard Method

Space volume 50 cu ft/1000 Btuh or infiltration rate 0.40 ACH.

Condensate Trap

Downflow Orientation

Relocation of condensate trap required for proper drainage.

Horizontal Orientation

To Relocate the Condensate Trap

Steps for relocating trap for horizontal installation.

Condensate Drain Connection

Property Damage Hazard (Caution)

Prevent burst water pipes and property damage.

Right Side Condensate Drain

Procedure for routing drain to the right side.

Left Side Condensate Drain Connection

For Left Side Condensate Drain Connection

Procedure for routing drain to the left side.

Filter Arrangement

Fire, Carbon Monoxide and Poisoning Hazard (Warning)

Never operate furnace without a filter or with access doors removed.

Filter and Return Duct Sizing

Pressure Drop Considerations

Account for pressure drop when sizing filters and ductwork.

Gas Piping

Electrical Connections

Electrical Shock, Fire or Explosion Hazard (Warning)

Disconnect power before servicing; label wires.

Electrical Shock Hazard (Warning)

115-V Wiring

J-Box Installation

Fire or Electrical Shock Hazard (Warning)

High voltage connections must be in J-Box or external disconnect.

BX Cable Installation in Furnace J-Box

Fire, Explosion, Electrical Shock, and Carbon Monoxide Poisoning Hazard (Warning)

Do not drill into blower shelf for control wiring.

Venting

Special Venting Requirements for Installations in Canada

Conformance to CSA B149 code; ULC S636 listed materials.

Carbon Monoxide Poisoning Hazard

General

Venting system must be properly sized and installed.

Ventilated Combustion Air

Locating the Vent Termination

Combustion Air and Vent Piping Insulation Guidelines

Configure the Furnace

Warning (Carbon Monoxide Poisoning Hazard)

Proper sealing prevents circulation of carbon monoxide.

Start-Up, Adjustment, and Safety Check

Important Installation and Start-up Procedures (Notice)

Check manifold pressure, temp rise; minor smoke/odor may occur.

General

Prime Condensate Trap with Water (Warning)

Proper trap priming prevents CO release.

Adjustments

Fire or Explosion Hazard (Warning)

Never purge gas line into chamber; use soap for leaks.

Fire Hazard (Warning)

Natural Gas Manifold Pressure Adjustments

Adjustments compensate for altitude and gas heating value.

Check Inlet Gas Pressure

Adjust Manifold Pressure

Adjust pressure to obtain proper gas input rate per tables.

Service and Maintenance Procedures

Fire, Injury or Death Hazard (Warning)

Do not store flammable materials near the furnace.

Electrical Operation Hazard (Caution)

Electrical Controls and Wiring

Cleaning Burners and Flame Sensor

Blower Motor and Wheel Maintenance

Electrical Operation Hazard (Warning)

Blower door switch opens power to control; caution when closing manually.

Flushing Collector Box and Drainage System

Electrical Shock and Fire Hazard (Warning)

Turn off gas/electrical supplies and lockout tag.

Winterization

Unit and Property Damage Hazard (Caution)

Take freeze protection measures in cold environments.

Unit Component Damage Hazard (Caution)

Sequence of Operation

Heating

Step-by-step operation during a call for heat.

Cooling Mode

Heat Pump

Component Self-Test