Atwood RV Furnace User's Manual

The Atwood RV Furnace is a high-efficiency heating system designed for recreational vehicles, featuring automatic ignition, multi-speed blower, built-in safety controls, thermostat operation, and compatibility with propane fuel systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Burner assembly, blower motor, heat exchanger, thermostat control, propane connection, exhaust vent, air intake.

Installation

Unpack and inspect all components. Ensure proper ventilation clearance.

1. Mount furnace: Secure to floor or wall with provided brackets.
2. Connect propane supply: Use approved propane hose and fittings.
3. Install exhaust vent: Route through RV wall with proper clearance.
4. Connect thermostat: Wire to control unit following diagram.
5. Connect 12V DC power: Use appropriate gauge wiring.

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

First-Time Setup

After installation, perform initial startup procedure.

1. Check propane supply: Ensure tank is filled and valves are open.
2. Purge air from lines: Follow manufacturer's purging procedure.
3. Set thermostat: Turn to desired temperature setting.
4. Test ignition: Verify proper flame establishment.
5. Check airflow: Ensure warm air is circulating properly.

CAUTION! Test for gas leaks using soap solution. Never use open flame to check for leaks.

Specifications

• Heating Capacity: 16,000 - 30,000 BTU (model dependent)
• Fuel Type: Liquid Propane (LP)
• Power Requirement: 12V DC
• Ignition: Direct spark electronic
• Blower Speeds: 2 or 3 speed settings
• Thermostat: Digital or manual control
• Exhaust: Through-wall venting
• Dimensions: Varies by model (typically 14" x 10" x 20")
• Weight: 15-25 pounds
• Efficiency: 85% or higher

Controls and Settings

Primary control through wall thermostat or furnace control board.

Thermostat: Temperature setting, fan control, system on/off.

Furnace Controls: Main power switch, blower speed selection, reset button, status LED indicators. Blower speed: HIGH for maximum heat output, LOW for quiet operation. Temperature range: 50°F to 85°F adjustable. Fan delay: Automatic fan operation after burner shutdown.

Connecting to Propane System

Proper propane connection is critical for safe operation.

1. Turn off all propane valves before connecting.
2. Use only approved propane hoses and fittings.
3. Install sediment trap in gas line if required.
4. Check all connections for leaks after installation.
5. Ensure propane regulator is properly sized and functioning.

Tip: Use two wrenches when connecting gas lines to prevent twisting.

Operating the Furnace

Normal operation sequence and user controls.

1. Set thermostat: Turn to desired temperature above current room temp.
2. Ignition sequence: Blower starts, then ignition spark, gas valve opens.
3. Flame establishment: Burner ignites, safety sensor confirms flame.
4. Heating cycle: Blower circulates warm air until thermostat setting reached.
5. Shutdown: Gas valve closes, blower continues for cool-down period.
6. Fan control: AUTO or ON settings available on thermostat.
7. Temperature adjustment: Use thermostat up/down buttons.
8. System off: Turn thermostat to OFF position.

WARNING! Never operate furnace with blocked vents or air intake. Ensure carbon monoxide detector is functioning.

Safety Features

Multiple safety systems protect against hazardous conditions. Overheat protection: Automatic shutdown if temperature exceeds safe limits. Flame failure: Gas valve closes if flame is not detected. Vent blockage: Pressure switch detects improper exhaust flow. Low voltage: System shutdown if DC voltage drops below operating range. Rollout protection: Shuts down if flame rolls out of burner assembly.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and safety.

1. Annual inspection: Check burner, heat exchanger, and venting.
2. Clean air intake and exhaust vents: Remove debris and obstructions.
3. Inspect electrical connections: Check for corrosion or loose wires.
4. Test safety controls: Verify proper operation of all safety features.
5. Replace air filter: Clean or replace as needed (if equipped).

CAUTION! Always disconnect power and propane supply before performing maintenance. Use only qualified service technicians.

Regulatory Information

Certified to ANSI Z21.44/CSA 2.3 standards for recreational vehicle heaters. Complies with RVIA standards for installation in recreational vehicles. CSA International certified for US and Canadian markets. For technical support, contact Atwood Customer Service at 1-800-555-HEAT or visit www.atwoodmobile.com.

Troubleshooting

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

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