Dometic DFMD30 User Manual

OPERATING
INSTRUCTIONS
Read these instructions carefully. These instructions MUST stay with this product.
USA & CANADA
SERVICE OFFICE
Dometic Corporation
1120 North Main Street
Elkhart, IN 46514
SERVICE CENTER &
DEALER LOCATIONS
Visit:
www.eDometic.com
Form No. 33401 09/17
©2017 Dometic Corporation
LaGrange, IN 46761
INTRODUCTION ............................................................................. 2
IMPORTANT SAFETY INSTRUCTIONS AND DOCUMENT SYMBOLS .................................... 2
OPERATION ................................................................................. 4
INSPECTION AND MONTHLY MAINTENANCE .................................................... 5
ANNUAL MAINTENANCE ...................................................................... 7
TROUBLESHOOTING ......................................................................... 7
REPLACEMENT PARTS ......................................................................... 7
WARRANTY ................................................................................. 8
DF Series Furnace
Models DFSAD12, DFSD12, DFSD16, DFSD20, DFMD16,
DFMD20, DFMD25, DFMD30, DFMD35, DFLD35,
DFLD40, DFLA35, DFLA40
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious
injury, death or property damage.
− Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
− WHAT TO DO IF YOU SMELL GAS
• Evacuate all persons from the vehicle.
• Shut off the gas supply at the gas container or source.
• Do not touch any electrical switch, or use any phone or radio
in the vehicle.
• Do not start the vehicle's engine or electric generator.
• Contact the nearest gas supplier or qualified service
technician for repairs.
• If you cannot reach a gas supplier or qualified service
technician, contact the nearest fire department.
• Do not turn on the gas supply until the gas leak(s) has been
repaired.
− Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.

Dometic DFMD30 Specifications

General

Type	Forced Air Furnace
Heating Capacity	30, 000 BTU/h
Fuel Type	Propane
Power Source	12V DC
Heat Output	30, 000 BTU/h

Summary

Important Safety Instructions and Document Symbols

Recognize Safety Information

Identifies safety alert symbol and its meaning for potential injury hazards.

Understand Signal Words

Explains signal words (DANGER, WARNING, NOTICE) indicating hazard levels.

Supplemental Directives

Emphasizes reading instructions, compliance with codes, and potential risks of incorrect installation.

General Safety Messages

Warns against unqualified service and modification, emphasizing potential for serious injury or death.

Fire or Explosion Hazard

Details precautions for storing flammable materials and handling LP gas.

Critical Operation Warnings

Lists restrictions on use, storage, cleaning, and installation for safe operation.

Carbon Monoxide Hazard

Warns about CO risk, ventilation requirements, and proper venting.

Electrical Shock Hazard

Covers DC voltage limitations, ground requirements, and battery charger usage.

Operation

Fire or Explosion Hazard Warning

Highlights fire/explosion risks and proper burner ignition procedures.

Turning On The Furnace

Step-by-step guide for safely turning on the furnace, including gas checks.

Turning Off The Furnace

Inspection and Monthly Maintenance

General Safety Warnings

General safety warnings for servicing, emphasizing professional help and electrical disconnection.

Servicing And Maintenance

Annual Maintenance

Troubleshooting

Furnace Not Lighting (Blower Off)

Furnace Not Lighting (Blower On)

Furnace Shuts Off Prematurely