Figure 2
Figure 3
Figure 1
MAINTENANCE AND CLEANING
WARNING! If the user of this appliance fails to maintain it in the
condition in which it was shipped from the factory or if the appliance
is not used solely for its intended purpose or if appliance is not
maintained in accordance with the instructions in this manual, then the
risk of a fire and/or the production of carbon monoxide exists which
can cause personal injury, property damage or loss of life.
CAUTION: Label all wires before disconnecting for servicing. Proper
polarity must be observed so the furnace motor will run with the proper
direction of rotation to insure correct air delivery (See Wiring Diagram.)
CAUTION: Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous furnace operation.
Always verify proper operation of furnace after servicing.
You, as the owner/user, should inspect the furnace monthly during the
heating season for presence of soot on vent. Operating the furnace under this
condition could lead to serious property damage, personal injury or loss of life.
If soot is observed on the vent, immediately shut furnace down and contact a
qualified service agency.
Listed below are several safety related items that you should follow during the
heating season to assure continued safe operation of the furnace.
1. Inspect furnace venting. Venting must be free of obstructions, void of soot
and properly terminated to the atmosphere. (Refer to installation manual.)
WARNING! Do not install screens over the vent for any reason. Screens
will become restricted and cause unsafe furnace operation.
Accessories are being marketed for RV products which we do not
recommend. For your safety, only factory authorized parts are to be
used on your furnace.
2. Periodically inspect the vent for obstructions or presence of soot. Soot is
formed whenever combustion is incomplete. This is your visual warning that the
furnace is operating in an unsafe manner. If soot is present, immediately shut
furnace down and contact your dealer or a qualified service person.
3. Periodically observe the main burner flame to assure it is burning with a hard
blue flame with well defined burner ports (See Figure 2). If flame appears
yellow or burner has a lazy flame, shut furnace down. It is possible that burner
needs cleaning or replaced. If excessive rust and corrosion are present on
burner surface, the burner must be thoroughly cleaned or replaced. The burner
may be cleaned using a steel wire brush and blown clean using high
compression air. Contact a qualified service person for assistance.
NOTE: To properly observe burner operation, the furnace must be removed.
This should only be done by your dealer or a qualified service agency.
4. Keep furnace clean. More frequent cleaning may be required due to
excessive lint from carpeting, bedding material, etc. It is imperative that control
compartments, burners and circulating air passageways of the appliance be
kept clean.
5. The motor is permanently lubricated and requires no oiling.
6. Keep the furnace area clear of any combustible materials, gasoline or other
flammable vapor and liquids.
7. Before operating furnace, check the location of the furnace vent to make
sure it will not be blocked by the opening of any door on the trailer. If it can be
blocked, do not operate the furnace with the door open.
8. Do not restrict the flow of combustion air or the warm air circulation to the
furnace. To do so could cause personal injury and/or death.
9. Never operate the furnace if you smell gas. Do not assume that the smell of
gas in your RV is normal. Any time you detect the odor of gas, it is to be
considered life threatening and corrected immediately. Extinguish any open
flames including cigarettes and evacuate all persons from the vehicle. Shut off
gas supply at LP gas bottle. (See safety notice on front cover of this manual.)
10. Immediately shut furnace down and call a service agency if furnace cycles
erratically or delays on ignition.
WARNING! Should overheating occur, or the gas supply fail to shut off,
shut off the manual gas valve to the appliance before shutting off the
electrical supply.
11. Never attempt to repair damaged parts. Always have them replaced by a
qualified service agency.
12. Never attempt to repair the furnace yourself. Seek the help of a qualified
service person.
13. Never restrict the ducting installed by your trailer manufacturer. To do so
could cause improper furnace operation.
14. Do not install air boosters in the duct system. Such devices will cause the
furnace to cycle on limit and to have erratic sail switch operation.
15. Clothing or other flammable material should not be placed on or near the
appliance.
16. Always follow the Operating Instructions. Do not deviate from the step-by-
step procedures.
17. Do not use this appliance if any part has been submerged under water.
Immediately call a qualified service technician to inspect the appliance and to
replace any part of the control system and any gas control that has been
submerged under water.
18. When considering add-on rooms, porch or patio, attention must be given
to the venting of your furnace. For your safety, do not terminate furnace vent
inside add-on rooms, screen porch or onto patios. Doing so will result in
products of combustion being vented into the room or occupied areas.
19. In any installation in which the vent of this appliance can be covered due
to the construction of the RV or some special feature of the RV such as slide
out, pop-up etc. always insure that the appliance cannot be operated by setting
the thermostat to the positive “OFF” position and shutting off all electrical and
gas supply to the appliance. Never operate furnace with vent covered.
Your furnace should be inspected by a qualified service agency yearly
before turning the furnace on. Particular attention should be given to the
following items.
1. Inspect furnace installation and vent term ination to be sure furnace is
properly secured in place, that vent terminates to the atmosphere and that vent
tubes overlap properly. (See installation manual supplied with furnace.)
2. Inspect chamber and venting to assure that these components are physically
sound, without holes or excessive corrosion and that the installation and/or
reinstallation is in accordance with Suburban’s Installation Instructions.
(Reference installation manual supplied with furnace.)
WARNING! It is imperative that the products of combustion be properly
vented to atmosphere and that all combustion air supplied to burner be
drawn from outside atmosphere.
3. Check the base on which furnace is mounted. Be sure it is physically sound,
void of any sagging, deterioration, etc.
4. Inspect furnace, the venting, ducting and the gas piping to furnace for
obvious signs of deterioration. Correct any defects at once.
5. Inspect com bustion cham ber for restrictions in exhaust or intake. It is
imperative that the flow of intake combustion air and the flow of exhaust gases
being expelled to the outside atmosphere not be obstructed. Any soot or loose
debris should be blown out using compressed air. (See Figure 3.)
6. Inspect all gaskets. If any gaskets show signs of leakage or deterioration,
replace them. Safe operation of the furnace depends on all gaskets being tight.
7. Inspect return air inlet openings to the furnace. Remove any restrictions to
assure adequate air flow.
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