Suburban RV Furnace SF 30 Manual

The Suburban RV Furnace SF 30 is a 30,000 BTU forced-air furnace designed for recreational vehicles, featuring automatic ignition, multi-speed blower, direct spark ignition system, and safety shut-off features. 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 7. Operating the Furnace 8. Maintenance Procedures 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Burner assembly, heat exchanger, multi-speed blower motor, direct spark ignition, thermostat control, safety shut-off valve.

Feature	Description
BTU Rating	30,000 BTU/hour output
Ignition System	Direct spark ignition with automatic retry
Blower Motor	Multi-speed for optimal air flow
Fuel Type	Propane/LP gas
Voltage	12V DC operation
Safety Features	Flame rollout switch, overheat protection, oxygen depletion sensor
Exhaust	Sealed combustion system
Dimensions	Standard RV furnace size
Weight	Approximately 15 lbs
Air Flow	Adjustable blower speeds

Installation

Professional installation recommended. Ensure proper ventilation and clearances.

Select mounting location: Ensure adequate clearance from combustible materials.
Install venting: Connect exhaust and intake pipes according to specifications.
Connect gas line: Use approved gas fittings and leak test all connections.
Wire electrical: Connect 12V DC power and thermostat wires.
Secure furnace: Mount securely to floor or wall structure.

WARNING! Gas appliances can be dangerous if improperly installed. Use qualified technician for installation.

First-Time Setup

After installation, perform initial startup procedure.

Check gas connections: Use leak detection solution on all fittings.
Verify electrical: Ensure 12V power is connected and thermostat is functioning.
Test ignition: Turn thermostat to heat mode and set above room temperature.
Monitor operation: Listen for proper ignition sequence and blower operation.
Check airflow: Verify warm air is discharging from all vents.

CAUTION! Never bypass safety devices. Test carbon monoxide detector is working.

Specifications

Model: SF 30
BTU Output: 30,000 BTU/hour
Fuel: Propane/LP Gas
Electrical: 12V DC
Ignition: Direct Spark
Blower Speeds: Multi-speed adjustable
Dimensions: Standard RV furnace footprint
Weight: 15 lbs
Venting: Sealed combustion system
Gas Connection: 3/8" flare fitting

Controls and Settings

Operation controlled by RV thermostat. No user-adjustable settings on furnace unit.

Thermostat Controls: Temperature setting, fan mode (auto/on), system mode (heat/off)

Furnace LED Codes: Blinking patterns indicate operational status and error conditions

Blower Speed: Factory set for optimal performance; professional adjustment only

Connecting to Power

12V DC power required for operation. Connect to RV electrical system.

Ensure main power switch is OFF before connecting wires.
Connect positive (red) and negative (black/white) wires to appropriate terminals.
Connect thermostat wires according to wiring diagram.
Verify proper grounding.

Tip: Use correct wire gauge and circuit protection as specified in RV manual.

Operating the Furnace

Simple thermostat operation for heating needs.

Set thermostat to HEAT mode.
Adjust temperature setting above current room temperature.
Listen for ignition sequence: blower start, spark ignition, gas valve opening.
Monitor for warm air output within 30-60 seconds.
To turn off: Set thermostat to OFF or lower temperature setting.

WARNING! Never operate furnace with exterior cover removed. Keep vents clear of obstructions.

Maintenance Procedures

Annual maintenance recommended for safe operation.

Clean burner assembly: Remove dust and debris from burner and orifice.
Inspect heat exchanger: Check for cracks or corrosion.
Clean blower wheel: Remove dust buildup from blower assembly.
Check venting: Ensure exhaust and intake pipes are clear and secure.
Test safety devices: Verify proper operation of all safety switches.

CAUTION! Disconnect power and gas supply before performing maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Safety Feature	Function
Flame Rollout Switch	Shuts off gas if flame escapes burner area
Overheat Limit Switch	Prevents overheating of heat exchanger
Oxygen Depletion Sensor	Monitors combustion air quality
Ignition Lockout	Prevents continuous sparking if ignition fails
Gas Valve	Automatic shut-off if flame is not detected

Regulatory Information

Certified to ANSI Z21.44 standards for recreational vehicle heating systems. CSA International certified. Manufactured by Suburban Manufacturing Company. For technical support, contact Suburban Customer Service at 1-800-782-2201 or visit www.suburbanrv.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, switch	Check 12V power, thermostat setting, main switch
Blower runs but no heat	Gas supply, ignition	Check propane supply, listen for spark ignition
Furnace cycles on/off frequently	Airflow restriction	Check vents and air intake for obstructions
Error code blinking	Safety lockout	Refer to LED code chart in service manual
Unusual odors	Dust buildup, combustion issues	Clean burner assembly, check venting

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

Service: 1-800-782-2201; www.suburbanrv.com