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WARNING

CARBON-MONOXIDE

POISONING HAZARD

Failure to follow instructions could result 

in severe personal injury or death due to 

carbon-monoxide poisoning, if combustion 

products infiltrate into the building.

Check that all openings in the outside wall 

around the vent (and air intake) pipe(s) are 

sealed to prevent infiltration of combustion 

products into the building.
Check the furnace vent (and air intake) 

terminal(s) are not obstructed in any way 

during all seasons.

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 prior to disconnecting for servicing 

and servicing controls. Wiring errors can cause 

improper and dangerous furnace operation. 

 

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).
Always verify proper operation of furnace after 

servicing.

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 Propane 

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.

Summary of Contents for Suburban SF-20FQ

Page 1: ...stallation can cause serious injury or death Read and follow instructions and precautions in User s Information Manual provided with this furnace Installation and service must be performed by a qualif...

Page 2: ...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...

Page 3: ...t combustion chamber 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 obstruc...

Page 4: ...burner does not light repeat Steps 1 through 8 9 If after three 3 attempts with no ignition go to shut down and contact your dealer or a local recreational vehicle service agency Do not continue to cy...

Page 5: ...arr t de la vanne Lorsque l interrupteur est en position OFF le gaz ne s coule pas vers le br leur et la fournaise ne fonctionne pas non plus Mod les SF SERIES voir la figure 4A Mod les de la s rie SH...

Page 6: ...ment d charg s l atmosph re et que tout l air comburant fourni au bec soit tir de l atmosph re l ext rieur 3 V rifier la base sur laquelle le calorif re est mont Soyez certain qu elle est en bon tat v...

Page 7: ...ation que nous ne recommandons pas Pour votre s curit seulement les parties autoris es par l usine seront utilis es sur votre calorif re 2 Inspecter p riodiquement la ventouse pour les obstructions ou...

Page 8: ...a mort Suivre les instructions et les consignes qui figurent dans la notice d utilisation qui accompagne ce g n rateur d air chaud L installation et l entretien doivent tre effectur s par un r parateu...

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