Nordyne Mobile Home Furnace Manual

The Nordyne Mobile Home Furnace is a high-efficiency heating system designed specifically for mobile home applications, featuring multiple safety systems, electronic ignition, variable-speed blower motor, durable heat exchanger construction, and compatibility with various thermostat controls. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Technical Specifications 5. Controls and Settings 6. Operation Procedures 7. Maintenance Schedule 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger, blower assembly, gas valve, electronic ignition system, limit switches, pressure switch, venting system.

Feature	Description
Heat Exchanger	Stainless steel construction for durability and efficiency
Blower Motor	Variable-speed ECM motor for quiet operation
Ignition System	Electronic hot surface ignition
Gas Valve	Multi-function control valve with safety shutoff
Limit Switches	High-temperature safety cutoff
Pressure Switch	Verifies proper venting operation
Flame Sensor	Monitors burner flame presence
Thermostat Connection	Standard 24VAC thermostat terminals
Power Supply	120V AC, 60Hz operation
Venting System	Sealed combustion or power vent options

Installation Requirements

Proper installation is critical for safe and efficient operation. Follow all local codes and manufacturer guidelines.

Location: Install in approved mobile home furnace compartment with proper clearances.
Venting: Use approved venting materials; maintain proper slope and termination.
Gas Connection: Use approved gas piping; pressure test all connections.
Electrical: Connect to dedicated 120V circuit; proper grounding required.
Combustion Air: Ensure adequate combustion and ventilation air supply.

WARNING! Installation must be performed by qualified technician. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

Initial startup and system verification procedures.

System Check: Verify all connections are secure and proper.
Gas Pressure: Set manifold pressure to specifications on rating plate.
Venting: Confirm proper draft and vent operation.
Electrical: Check voltage at furnace and thermostat.
Initial Start: Follow lighting instructions; verify proper flame.
Airflow: Check blower operation and airflow patterns.

CAUTION! Never bypass safety controls. Always verify proper operation before leaving installation.

Technical Specifications

Input Capacity: 40,000 - 100,000 BTU/H (model dependent)
Efficiency: 80% AFUE or higher
Gas Type: Natural Gas or LP (field convertible)
Electrical: 120V AC, 60Hz, 5-8 Amps
Blower Motor: ECM variable speed
Airflow: 800-1600 CFM
Venting: Category I or IV (model dependent)
Dimensions: Varies by model - check specific model data
Weight: 80-150 lbs depending on model

Controls and Settings

Integrated furnace control board manages all operations with LED status indicators.

Control Board: Monitors safety devices, controls ignition sequence, manages blower operation.

Thermostat Settings: Heat/Off/Auto, Fan On/Auto, Temperature setpoint. Blower Speeds: Adjustable for heating mode. Gas Pressure: Factory set, field adjustable if needed. Limit Controls: Automatic high-temperature cutoff. Pressure Switch: Verifies venting operation before ignition.

Operation Procedures

Normal heating cycle operation and seasonal startup.

Thermostat Call: Set thermostat above room temperature for heat demand.
Inducer Operation: Draft inducer starts first to establish draft.
Pressure Switch: Verifies proper draft before ignition sequence.
Ignition: Hot surface igniter glows, gas valve opens.
Flame Sensing: Flame sensor confirms ignition; main burner operates.
Blower Operation: Blower starts after heat exchanger warm-up period.
Cycle Completion: When thermostat satisfied, gas valve closes, blower continues cool-down.

Tip: Allow system to complete entire cycle; frequent cycling reduces efficiency.

Maintenance Schedule

Regular maintenance ensures safe and efficient operation.

Monthly: Check air filter; replace if dirty.
Seasonal: Professional inspection before heating season.
Annual: Complete professional service including:
- Heat exchanger inspection
- Burner cleaning and adjustment
- Blower cleaning and lubrication
- Safety control testing
- Venting system inspection
Biannual: Ductwork inspection and cleaning if needed.

WARNING! Always turn off power and gas supply before performing any maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Safety Device	Function
Flame Rollout Switch	Detects improper burner flames
High Limit Switch	Prevents overheating
Pressure Switch	Ensures proper venting
Flame Sensor	Confirms burner ignition
Gas Valve	Automatic shutoff if flame lost
Ignition Control	Limited trial for ignition

Care & Cleaning

Proper cleaning maintains efficiency and extends equipment life.

Air Filter: Replace every 1-3 months during heating season.
Blower Assembly: Vacuum annually; clean blades if dirty.
Burners: Professional cleaning only - do not attempt yourself.
Heat Exchanger: Visual inspection by professional annually.
Venting: Inspect for obstructions or damage.

CAUTION! Never operate without filter. Keep area around furnace clear of combustible materials.

Regulatory Information

ANSI Z21.47: Certified for mobile home installation. CSA International: Certified to applicable standards. UL Listed: Electrical components UL recognized. Installation must comply with National Fuel Gas Code (NFPA 54), National Electrical Code (NFPA 70), and manufacturer's instructions. For support, contact Nordyne Technical Service at 1-800-422-4328 or visit www.nordyne.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker, thermostat setting, door switch engagement.
No heat	Gas supply, ignition	Verify gas valve on, check for ignition attempts, inspect flame sensor.
Blower won't run	Motor, capacitor, control	Check blower door switch, motor capacitor, control board signal.
Short cycling	Filter, limit switch	Replace dirty filter, check for restricted airflow, verify limit operation.
Unusual noises	Blower, inducer, ducts	Inspect blower wheel, inducer motor, check for loose ductwork.
Lockout condition	Safety device tripped	Reset power, check LED codes, identify tripped safety device.

Reset Procedure: Turn thermostat to off, turn off power for 30 seconds, restore power, set thermostat to heat.

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