Domestic Travel Trailer Furnace Manuals

The Domestic travel trailer furnace is a reliable heating system designed for recreational vehicles, featuring automatic ignition, multiple heat settings, safety shut-off mechanisms, thermostat control, and efficient fuel consumption. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Power & Fuel 7. Operating the Furnace 8. Safety Features 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Burner assembly, blower motor, thermostat control, gas valve, ignition system, exhaust vent, air intake.

Feature	Description
Automatic Ignition	Electronic spark ignition for reliable startup
Multiple Heat Settings	Low, Medium, High heat output options
Thermostat Control	Maintains consistent temperature settings
Safety Shut-off	Automatic shut-off if overheating detected
Blower Motor	Distributes heated air throughout trailer
Gas Valve	Controls propane flow to burner
Exhaust Vent	Removes combustion gases safely
Air Intake	Provides combustion air from outside
POWER Switch	Turns furnace on/off
Thermostat Dial	Adjusts temperature setting

Installation

Unpack and inspect contents. Ensure proper ventilation and clearance.

Mount furnace: Secure in designated compartment with proper clearance.
Connect gas line: Use approved propane hose and fittings.
Connect 12V DC power: Wire to trailer electrical system.
Install exhaust vent: Route through exterior wall with proper sealing.
Connect thermostat: Run wiring to control panel location.

WARNING! Installation must be performed by qualified technician. Ensure proper ventilation to prevent carbon monoxide buildup.

First-Time Setup

Complete installation checks before initial operation.

Check gas connections: Test for leaks with soap solution.
Verify electrical connections: Ensure 12V DC power is connected.
Test ignition: Turn thermostat to highest setting to initiate startup.
Adjust airflow: Ensure vents are unobstructed.
Set thermostat: Calibrate to desired temperature range.

CAUTION! Never operate without proper ventilation. Test carbon monoxide detector before use.

Specifications

Heating Capacity: 20,000-30,000 BTU/hr
Fuel Type: Propane (LP gas)
Power Requirements: 12V DC
Ignition System: Electronic spark ignition
Airflow: 100-150 CFM blower
Thermostat: Mechanical or digital temperature control
Dimensions: Varies by model (typically 14"x10"x18")
Weight: 15-25 pounds
Exhaust Vent: 3-4 inch diameter
Operating Temp Range: 40°F to 90°F

Controls and Settings

Access controls via thermostat and furnace control panel.

Thermostat: Temperature dial (OFF-LOW-MED-HIGH), power indicator light.

Furnace Controls: Main power switch, reset button, blower speed adjustment. Operation: Turn thermostat to desired setting; furnace ignites automatically. Adjust blower speed for airflow preference. Use reset button if safety lockout occurs.

Connecting to Power & Fuel

12V DC power connection and propane gas line installation.

Turn off all power and gas supplies before connecting.
Connect 12V DC: Red to positive, black to negative terminals.
Connect propane: Use approved hose and fittings; test for leaks.
Secure all connections with proper clamps and seals.

Tip: Always use gas leak detector solution on all connections.

Operating the Furnace

Simple operation with automatic features.

Turn on: Set thermostat above current room temperature.
Startup: Listen for ignition sequence (spark, gas valve, burner).
Operation: Blower will start once burner is lit.
Adjust temperature: Turn thermostat dial to desired setting.
Shut down: Turn thermostat to OFF position.
Fan delay: Blower may continue running to cool heat exchanger.

WARNING! Never block air intake or exhaust vents. Ensure carbon monoxide detector is functioning.

Safety Features

Overheat protection: Automatic shut-off if temperature exceeds safe limits. Flame failure: Shuts off gas if flame is not detected. Vent blockage detection: Prevents operation if exhaust is obstructed. Low voltage protection: Shuts down if battery voltage drops too low.

Maintenance & Cleaning

Annual maintenance recommended for safe operation.

Clean burner assembly: Remove debris and dust.
Inspect heat exchanger: Check for cracks or corrosion.
Clean blower wheel: Remove dust buildup.
Check vent system: Ensure no obstructions.
Test safety controls: Verify proper operation.

CAUTION! Disconnect power and gas before maintenance. Use compressed air for cleaning; no liquids.

Regulatory Information

ANSI Z21.44: Certified for recreational vehicle use. CSA 4.3: Meets Canadian standards for gas-fired appliances. Propane Education & Research Council compliance. For support, visit www.domesticrving.com or contact 1-800-555-HEAT.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power/gas supply	Check 12V power; verify propane tank not empty; check thermostat setting.
No heat but blower runs	Ignition failure	Check gas valve; inspect igniter; verify flame sensor.
Furnace cycles on/off frequently	Overheating/airflow	Clean air filter; check for vent obstructions; verify proper clearance.
Blower doesn't run	Motor/voltage issue	Check 12V connection; test blower motor; verify thermostat function.
Gas odor	Leak or incomplete combustion	Shut off immediately; check for leaks; verify proper ventilation.

Reset: Turn thermostat off for 5 minutes, then restart.

Service: 1-800-555-HEAT; www.domesticrving.com