lg¥31Suburban
AIRXCEL, INC. - SUBURBAN DIVISION
676
Broadway
Street
Dayton, Tennessee 37321
423-775-2131
www.RVComfort.com
S
UBURBAN
GA
S
FURNAC
ES
INST
ALL
ATION INSTRUCTIONS FOR
MODEL~
SF-20Q • SF-25Q • SF-30Q • SF-35Q • SF-42Q
The d
es
ign
of the furnace
ha
s been li
st
ed for installation
in
re
creational vehicles only.
In
order for the
fu
rnace
to
opera
te
in
c
on
formi
ty
wi
th
generally accepted safe
ty
regulatio
ns
, t
he
installation instructions must be followed. Failure to comply wi
th
the installation
in
st
ru
ct
ion
s will v
oi
d t
he
warranty on t
he
f
urn
ace and any respon
si
bi
li
ty
on
th
e pa
rt
of AIRXCEL, INC. - SUBURBAN DIVISION.
The furnace was
in
spected befo
re
it left the f
ac
tory. If
an
y parts a
re
found to
be
da
ma
ged,
do
not install the furnace. Immediately
co
ntact
th
e transpo
rt
ati
on
co
mp
any
and file a c
la
im.
FOR
YOUR
SA
FE
TY
WHAT
TO
DO IF YOU SM
ELL
GAS:
•
Extinguish
any open flame.
• Evacuate all
persons
fro
m
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
vehi
cl
e.
• Do
not
start
the vehicle's engine or el
ect
ric
generator
.
•
Contact
the
nearest
gas
s
upplier
or
qual
ified
service
technician
for
repairs.
•
If
you
cannot
reach a gas
supplier
or qualified
service
technician,
cont
a
ct
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
co
v
ering
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
informati
on,
contact
you
r dealer
or
nearest
Suburban
Service Center.
FOR
YOUR
S
AF
ET
Y
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS
IN
THE
VICINITY OF THIS OR
ANY
O
TH
ER APPLIANCE.
WARNING!
Improper installation, adjustment, alteration,
service or maintenance can cause p
ro
perty damage, personal
injury or loss of life. Refer to the installation instructions and/
or owners manual provided with
th
is appliance. Installation
and service must
be
performed by a qualified installer, service
agency or the gas supplier.
WARNING!
Be
sure the furnace and all igniti
on
systems
are "OFF" during any type
of
refueling and while vehicle
is
in
motion or being towed.
Part
Number
204768
01-14-2014
IN
STAL
L
ATION
INSTRUCTIO
NS
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
manua
l.
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"
min
imum 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
so
me
materials.
Yo
u should verify that the mater
ia
l u
se
d on the coach door, panel. or
cover w
ill
not
di
scolor or
wa
rp from the exhaust temperature whenever any door,
panel, or
co
ver
is
in
th
e open p
os
ition.
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
installatio
n 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
posi
ti
ve "OFF"
position
and
shutting
off
all
electr
ical and gas
supply
to
the 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
the unit as illustrated in Figure
1. l
fyou
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
r
esult
in a gas leak.
WARNING! Hold manifold firmly when turning elbow
to
prevent any force fr
om
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
ll
ing furnace into cabinet.
Correct
all leaks immediately. NOTE: The furnace must be in operation to properly check
for
leaks.
NOTE: These furnaces
mu
st
be
in
stalled a
nd
v
en
te
d as described
in
th
is manual
so
th
at
th
e
neg
ative pressure crea
ted
by
th
e air circ
ul
ating (return
ai
r) fan
ca
nn
ot
affect the comb
us
ti
on
air
in
take or venti
ng
of any other ap
pl
ia
nce. It is
im
perative
that t
he
pro
du
cts of com
bu
stion be properly vented
to
t
he
at
mo
sp
here and
th
at all
com
bu
stion air supplied to bu
rn
er be drawn f
ro
m the outside atmos
ph
ere. (See
In
stalling Vent Assembl
y.)
NOTE: Do not ins
ta
ll the furnace with the vent
fa
ci
ng
toward the forward end of
th
e coach.
IMPORTANT: If this furnace is to
be
co
nn
ect
ed
to a
co
mm
on
du
ct system also
serving a
co
o
li
ng
un
it, a
ma
nua
l or automatic da
mp
er is r
eq
ui
red to prevent
an
y
co
ld
co
nditio
ne
d air from
ci
r
cu
lat
in
g back into
th
e
fu
rn
ace. Cold air passi
ng
over
the
fu
rnace combus
ti
on
chamber
du
ring
th
e operation
of
th
e cooling
un
it
can
result
in
the format
io
n of
co
nden
sa
ti
on
in
si
de
th
e furnace combustion chamber. This
condensation may p
ro
mote corrosi
on
a
nd
prema
tu
re failure of the combustion
c
ha
mbe
r.
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