Nordyne Gas Furnace Installation Manual

The Nordyne Gas Furnace is a high-efficiency heating system designed for residential use, featuring advanced combustion technology, multiple safety controls, variable-speed blower motor, electronic ignition, and compatibility with various thermostat systems. Below are key sections for safety precautions, installation procedures, electrical connections, gas line connections, startup procedures, maintenance, and troubleshooting.

1. Safety Precautions 2. Pre-Installation Requirements 3. Installation Procedures 4. Electrical Connections 5. Gas Line Connections 6. Venting System 7. Startup and Commissioning 8. Operating Instructions 9. Maintenance Schedule 10. Troubleshooting Guide 11. Technical Specifications

Safety Precautions

Critical safety information for proper installation and operation.

Hazard	Precaution
Gas Leaks	Check all connections with soap solution; never use open flame
Electrical Shock	Disconnect power before servicing; proper grounding required
Carbon Monoxide	Ensure proper venting; install CO detectors in living areas
Fire Hazard	Maintain clearance from combustible materials
Burn Hazard	Allow unit to cool before servicing; hot surfaces present

Pre-Installation Requirements

Site preparation and necessary tools/materials.

Location: Select level, stable area with proper clearances (minimum 24" front, 6" sides, 12" rear).
Combustion Air: Ensure adequate fresh air supply per local codes.
Gas Supply: Verify gas type (natural/LP) and pressure requirements.
Electrical: Dedicated 120V circuit required; proper grounding.
Venting: Plan vent pipe routing and termination location.

WARNING! Installation must comply with all local codes and regulations. Professional installation recommended.

Installation Procedures

Step-by-step furnace installation.

Position furnace: Place on level surface, ensure proper clearances.
Install filter rack: Mount according to manufacturer instructions.
Connect ductwork: Secure supply and return air ducts.
Mount flue pipe: Assemble and secure vent system.
Install condensate drain: Route to proper drainage location.

CAUTION! Furnace is heavy; use proper lifting equipment and techniques.

Electrical Connections

Power Supply: 120V AC, 60Hz, 15A circuit
Thermostat: Low voltage connections (R, W, G, Y, C)
Grounding: Proper equipment grounding required
Blower Motor: Variable speed ECM motor
Control Board: Integrated furnace controller

Tip: Label all wires before disconnecting existing equipment.

Gas Line Connections

Proper gas piping installation and testing.

Shut off gas supply: Turn off main gas valve.
Install gas line: Use black iron pipe or approved flexible connector.
Apply pipe compound: Use gas-rated thread sealant on male threads only.
Install gas valve: Connect to furnace manifold.
Pressure test: Test at 14" WC for natural gas, 11" WC for LP gas.

WARNING! Gas connections must be made by qualified technician only.

Venting System

PVC vent pipe installation requirements.

Component	Requirement
Vent Material	Schedule 40 PVC or CPVC
Vent Size	2" or 3" diameter as specified
Termination	Minimum 12" above ground level
Clearances	12" from windows, doors, air inlets
Slope	1/4" per foot back to furnace

Startup and Commissioning

Initial startup procedure and system verification.

Verify installations: Check all connections and clearances.
Power up: Restore electrical power to furnace.
Gas pressure: Set manifold pressure per specifications.
Test operation: Cycle furnace through heating mode.
Check venting: Verify proper draft and combustion.
Measure temperatures: Check temperature rise across heat exchanger.

CAUTION! Never bypass safety controls during testing.

Operating Instructions

Normal operation and user controls.

Thermostat Settings: HEAT/COOL/AUTO modes, temperature setpoints, fan control.

LED Status Lights: Green (normal operation), Yellow (heating cycle), Red (error code).

Blower Operation: Variable speed adjusts for optimal airflow and efficiency.

Maintenance Schedule

Recommended maintenance intervals.

Monthly: Check and replace air filter if dirty
Annual: Professional inspection and cleaning
Seasonal: Check vent system for obstructions
Every 5 Years: Heat exchanger inspection
As Needed: Blower motor lubrication (if required)

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety switch	Check circuit breaker, thermostat settings, door switch
No heat	Gas supply, ignition, pressure switch	Verify gas valve on, check for spark, test pressure switch
Short cycling	Dirty filter, airflow, overheating	Replace filter, check blower, verify clearances
Blower won't stop	Thermostat, control board	Check thermostat fan setting, test control board
Error codes flashing	Various system faults	Refer to error code chart in service manual

Technical Specifications

Input Capacity: 40,000 - 120,000 BTU/H (model dependent)
Efficiency: 80% - 96% AFUE
Gas Type: Natural or LP (conversion kit required)
Electrical: 120V, 60Hz, 5-15A
Dimensions: Varies by model (typical 21"W x 21"D x 56"H)
Weight: 80-150 lbs
Warranty: 20-year heat exchanger, 5-year parts

Service: 1-800-422-4328; www.nordyne.com