Nortek KG7TC User Manual

Two-Stage Condensing Gas Furnaces With Fixed & Variable Speed Blowers 95.0% AFUE
INSTALLATION INSTRUCTIONS
*TC Upflow / Horizontal Furnace
WARNING
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could result in serious injury or property damage.
• Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a neighbors phone. Follow the gas suppliers instructions.
• If you cannot reach your gas supplier, call the fire department.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

Nortek KG7TC Specifications

General

Brand	Nortek
Model	KG7TC
Category	Furnace
Language	English

Summary

INSTALLATION INSTRUCTIONS

FIRE OR EXPLOSION HAZARD

Critical safety warnings regarding fire and explosion risks during installation.

WHAT TO DO IF YOU SMELL GAS

Essential steps to take in case of a gas leak detection.

IMPORTANT SAFETY INFORMATION

General Safety Warnings and Cautions

General safety warnings and cautions for furnace installation and handling.

REQUIREMENTS & CODES

Applicable Codes and Standards

Lists mandatory codes and standards for proper furnace installation.

COMBUSTION AIR & VENTING REQUIREMENTS

Combustion Air Quality Concerns

Information on ensuring proper combustion air quality to prevent corrosion.

Clearances to Combustible Materials

Specifies minimum clearances required around the furnace.

Carbon Monoxide Poisoning Hazard

Details risks of CO poisoning and outlines prevention steps.

Venting System Integrity

Emphasizes the importance of a sealed flue system to prevent leaks.

Confined Space Ventilation

Requirements for providing adequate combustion air in confined spaces.

Outdoor Air Intake Methods

Details methods for drawing combustion air from outdoors.

Category IV Venting Requirements

Specific installation procedures for Category IV venting systems.

Vent Pipe Length and Diameter

Guidelines for selecting and sizing vent pipes to avoid restrictive conditions.

Vent Freezing Protection

Recommendations for insulating vent pipes in cold environments.

CIRCULATING AIR REQUIREMENTS

Combustion Product Prevention

Warnings to prevent combustion products from entering the circulating air supply.

Return Air Connections

Instructions for properly connecting return air ductwork to the furnace.

FURNACE INSTALLATION

Upflow and Horizontal Furnace Placement

Guidelines for installing the furnace in upflow and horizontal configurations.

Inducer & Venting Options

Information on rotating the inducer assembly and venting configurations.

PVC Component Installation

Instructions for installing PVC vent pipes and related components.

Condensate Drain Lines

Procedures for properly draining and trapping condensate from the furnace.

GAS SUPPLY & PIPING

Gas Piping Installation and Safety

Requirements and safety precautions for installing gas supply piping.

Leak Check Procedure

Steps for testing gas connections to ensure they are leak-free.

High Altitude Gas Input Adjustment

Procedures for adjusting furnace input for high altitude installations.

Natural Gas to LP/Propane Conversion

Instructions and warnings for converting the furnace from natural gas to propane.

ELECTRICAL WIRING

Electrical Safety and Compliance

Safety and code compliance for electrical connections.

Thermostat Wiring Configurations

Different wiring configurations for thermostats and AC units.

Blower Speed and Autostaging Configuration

Settings for blower speed and autostaging features.

START-UP & ADJUSTMENTS

Pre-Start Checklist and Procedures

Essential checks and steps before starting furnace operation.

Verifying Burner Operation

How to check and verify proper burner ignition and flame characteristics.

Operating Sequence - Heating Cycle

Describes the sequence of operations during a heating call.

Operating Sequence - Cooling and Fan Modes

Explains the operational sequences for cooling and continuous fan modes.

MAINTENANCE

Furnace Safety During Maintenance

Critical safety warnings to follow before performing any maintenance.

Heat Exchanger and Burner Maintenance

Procedures for inspecting and cleaning heat exchangers and burners.

Gas Information

High Altitude Deration - Propane Gas

Deration values for propane gas at various altitudes.

High Altitude Deration - Natural Gas

Deration values for natural gas based on heating value.

Electrical Information

Fixed Speed Furnace Wiring Diagram

Wiring diagram for two-stage, fixed speed upflow furnaces.

Variable Speed Furnace Wiring Diagram

Wiring diagram for two-stage, variable speed upflow furnaces.

Venting Information

Vent Termination Clearances

Required clearances for vent terminations.

Horizontal & Vertical Venting (A Width Cabinets)

Diagrams showing venting options for 'A' width cabinets.

Horizontal & Vertical Venting (B, C, D Width Cabinets)

Diagrams showing venting options for 'B', 'C', 'D' width cabinets.

Upflow Venting Options (A Width Cabinets)

Illustrations of upflow venting configurations for 'A' width cabinets.

Upflow Venting Options (B, C, D Width Cabinets)

Illustrations of upflow venting configurations for 'B', 'C', 'D' cabinets.

Horizontal Venting Options (A Width Cabinets)

Illustrations of horizontal venting configurations for 'A' width cabinets.

Horizontal Venting Options (B, C, D Width Cabinets)

Illustrations of horizontal venting configurations for 'B', 'C', 'D' cabinets.

TROUBLESHOOTING

Furnace Component Functions

Explains the function of key furnace components for troubleshooting.

Component Locations

Diagram showing the physical location of major furnace components.

INSTALLATION CHECKLIST