Suburban SF-20Q Installation Instructions Manual

lg¥31Suburban
AIRXCEL, INC. - SUBURBAN DIVISION
676 Broadway Street
Dayton, Tennessee 37321
423-775-2131
www.RVComfort.com
SUBURBAN GAS FURNACES
INSTALLATION INSTRUCTIONS FOR
MODEL~
SF-20Q • SF-25Q • SF-30Q • SF-35Q • SF-42Q
The design of the furnace has been listed for installation in recreational vehicles only. In order for the fu rnace to operate in conformity with generally accepted safety
regulations, the installation instructions must be followed. Failure to comply with the installation instructions will void the warranty on the furnace and any responsibility
on th e part of AIRXCEL, INC. - SUBURBAN DIVISION .
The furn ace was in spected before it left the factory. If any parts are found to be damaged , do not install the furnace. Immediately contact th e transportation company
and file a claim.
FOR YOUR SA FET Y
WHAT TO DO IF YOU SMELL GAS:
• Extinguish any open flame.
• Evacuate all persons from the vehicle.
• Shut off the gas supply at t he gas container or
source.
• Do not touch any electrical switch, or use any
phone or radio in the vehi cle.
• Do not start the vehicle's engi ne or electric
generator.
• Contact the nearest gas s upplier or qualified
service technician for repairs.
• If you cannot reach a gas supplier or qualified
service technician, contact the nearest fi re
department.
Do not turn on the gas s upply until the gas
leak(s) has been repaired.
This book contains instructions covering the operation and
maintenance of your furnace.
INSTALLER: LEAVE THIS MANUAL WITH THE APPLIANCE.
CONSUMER: RETAIN THIS MANUAL FOR FUTURE REFERENCE.
Should you require further informatio n, contact your dealer or
nearest Suburban Service Center.
FOR YOUR SAFETY
DO NOT STORE OR USE GAS OLINE OR OTHER
FLAMMABLE VAPORS AN D LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
WARNING! Improper installation, adjustment, alteration ,
service or maintenance can cause property damage, personal
injury or loss of life. Refer to the installation instructions and/
or owners manual provided with this appliance. Installation
and service must be performed by a qualified installer, service
agency or the gas supplier.
WARNING! Be sure the furnace and all ignition systems
are "OFF" during any type of refueling and while vehicle is in
motion or being towed .
Part Number 204768
01-14-2014
INSTALL ATION INSTRUCTION S
WARNING!
Installation of this appliance must be made in accordance with the written
instructions provided in this manual. No agent, representative or employee of Suburban or
other person has the authority to change, modify or waive any provision of the instructions
contained in this manual.
THESE FURNACES ARE DESIGNED TO BE INSTALLED IN SUCH A
MANNER THAT THEY CAN BE REMOVABLE FROM THE EXTERIOR OF THE
RECREATIONAL VEHICLE.
IF UNIT IS TO BE INSTALLED VERTICALLY, YOU MUST USE KIT #520965
(INSTALLATION INSTRUCTIONS ARE ENCLOSED IN KIT) .
CAUTION : If possible, do not install the furnace to where the vent can be
covered or obstructed when any door on the trailer is opened. If this is not
possible, then the travel of the door must be restricted in order to provide
a 6" minimum clearance between the furnace vent and any door whenever
the door is opened.
NOTE: The exhaust temperature of this furnace could discolor or wa rp some
materia ls. You should verify that the material used on the coach door, panel. or
cover will not discolor or wa rp from the exhaust temperature whenever any door,
panel, or cover is in th e open position.
CAUTION: Due to the differences in vinyl siding, this appliance should not be
installed on vinyl siding without first consulting with the manufacturer of the
siding or cutting the siding away from the area around the appliance vent.
CAUTION: 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 t he appliance. Never operate
furnace with vent covered .
CAUTION : This furnace was shipped from the factory set up for the gas
connection to be made at the right rear of t he unit as illustrated in Figure
1. lfyou wish to make gas connection through the top of cabinet, you must
remove furnace from cabinet and turn gas inlet fitting 90 ° CLOCKWISE. DO
NOT TURN FITTING COUNTER-CLOCKWISE, this will loosen fitting and
result in a gas leak.
WARNING!
Hold manifold firm ly when turning elbow to prevent any force from being
inserted on the valve and to prevent any leaks from developing. Be sure to check all fittings
for leaks including the inlet and outlet on the va lve before reinsta lling furnace into cabinet.
Correct all leaks immediately. NOTE: The furnace must be in operation to properly check
for leaks.
NOTE: These furn aces mu st be installed and vented as described in th is manu al
so that the negative pressu re created by the air circulating (return ai r) fan cannot
affect the combustion air intake or venting of any other appliance. It is imperative
that the products of com bu stion be properly vented to the atmosphere and that all
combustion air supplied to burner be drawn from the outside atmosphere. (See
Installing Vent Assembly.)
NOTE : Do not insta ll the furnace with the vent facing toward the forward end of
the coach.
IMPORTANT: If this furn ace is to be co nnected to a common duct system also
serving a cooling unit, a manual or automatic damper is req uired to prevent any
cold co nditioned air from circu lating back into the fu rn ace. Cold air passi ng over
the furnace combustion chamber during the operation of the cooling unit can resu lt
in the form ation of condensation inside the furn ace combustion chamber. This
condensatio n may promote corrosion and prematu re failure of the combustion
chamber.