Atwood Hydro Flame Furnace User Manual

The Atwood Hydro Flame Furnace is a high-efficiency heating system designed for RV and mobile applications, featuring automatic ignition, multi-speed blower, safety shut-off systems, and compatibility with propane fuel. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

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

Features at a Glance

Key components: Automatic ignition system, multi-speed blower, thermostat control, propane gas connection, exhaust vent, air intake, safety shut-off valve.

Feature	Description
Automatic Ignition	Electronic spark ignition for reliable startup
Multi-speed Blower	Adjustable fan speeds for optimal heat distribution
Thermostat Control	Precise temperature regulation
Propane Connection	Standard 1/2" NPT gas inlet
Safety Shut-off	Automatic gas shut-off in case of flame failure
Exhaust Vent	3-inch diameter vent for combustion gases
Air Intake	Fresh air supply for combustion
Power Supply	12V DC operation
Heat Output	Adjustable BTU settings
Control Panel	LED indicators and mode selection

Installation

Unpack and inspect contents. Ensure proper ventilation and clearances.

Mount furnace: Secure to floor or wall using provided brackets.
Connect exhaust vent: Install 3-inch vent pipe to exterior.
Connect air intake: Ensure proper fresh air supply.
Connect gas supply: Use approved propane gas line with shut-off valve.
Connect electrical: Wire to 12V DC power source with proper fuse.

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

First-Time Setup

Power on furnace; follow startup procedure.

Check gas supply: Ensure propane tank is filled and valve is open.
Power connection: Verify 12V DC power is connected and stable.
Thermostat setting: Set to desired temperature.
Initial ignition: System will attempt automatic ignition.
Test operation: Verify proper flame and heat output.

CAUTION! Perform leak test on all gas connections before initial use.

Specifications

Heat Output: 16,000 - 30,000 BTU/hr adjustable
Fuel Type: Propane/LP Gas
Power Requirement: 12V DC, 3.5 Amps
Gas Connection: 1/2" NPT
Vent Size: 3-inch diameter
Ignition: Electronic spark ignition
Blower Speeds: 3-speed adjustable
Dimensions: 14" x 10" x 7"
Weight: 12 lbs
Efficiency: 85% AFUE

Controls and Settings

Access controls via thermostat or furnace control panel.

Thermostat: Temperature setting, fan control, mode selection.

Control Panel: Power switch, reset button, LED status indicators (power, ignition, error).

Temperature Settings: Adjust thermostat to desired comfort level. Fan Control: Auto, Low, Medium, High speeds. Mode Selection: Heat, Fan Only, Off. Safety Settings: High limit switch, flame sensor, pressure switch monitoring.

Connecting Gas Supply

Propane gas connection using approved gas line and fittings.

Turn off gas supply at main valve.
Use approved propane gas hose (check for certification).
Connect to furnace gas inlet (1/2" NPT).
Use pipe sealant approved for propane gas.
Perform leak test with soap solution.

Tip: Always use two wrenches when connecting gas lines to prevent damage.

Operating Procedures

Standard operating sequence for heating mode.

Set thermostat to desired temperature.
System checks: Pressure switch verifies venting.
Ignition sequence: Spark igniter activates.
Gas valve opens: Fuel flows to burner.
Flame detection: Sensor confirms ignition.
Blower activation: Circulates warm air.
Cycling: System maintains set temperature.
Shutdown: Thermostat satisfied or manual off.

WARNING! Never operate without proper ventilation. Ensure exhaust vent is clear.

Safety Features

Multiple safety systems: High limit switch, flame roll-out switch, pressure switch, tip-over switch, oxygen depletion sensor.

Maintenance & Cleaning

Annual maintenance recommended. Turn off power and gas before servicing.

Clean burner assembly: Remove debris and dust.
Inspect flame sensor: Clean with emery cloth if dirty.
Check vent system: Ensure clear of obstructions.
Lubricate blower motor: If required by model.
Inspect electrical connections: Tighten if loose.

CAUTION! Only qualified technicians should perform internal repairs.

Regulatory Information

CSA certified for RV use. Complies with ANSI Z21.44 standards. Manufactured to meet RV industry safety requirements. For support, contact Atwood Customer Service at 1-800-555-HEAT or visit www.atwoodmobile.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No ignition	Gas supply, power, igniter	Check gas valve; verify 12V power; inspect spark igniter
Blower not working	Power, motor, switch	Check fuse; test motor; verify thermostat setting
Flame goes out	Draft, sensor, gas pressure	Check venting; clean flame sensor; verify gas pressure
Error code flashing	Safety lockout	Reset power; check error code meaning in manual
Poor heat output	Airflow, burner, settings	Clean air filter; inspect burner; adjust thermostat

Reset: Turn power off for 30 seconds then restart.

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