INSTALLATION AND OPERATION MANUAL
DIRECT VENT
GAS WATER HEATER
DIRECT SPARK IGNITION (DSI)
MODELS
SW12D ! SW12DE ! SW12DEM
FOR INSTALLATION IN RECREATIONAL
VEHICLES AND MOBILE HOUSING
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
! DO NOT TRY TO LIGHT ANY APPLIANCE.
! DO NOT TOUCH ANY ELECTRIC SWITCH: DO NOT USE ANY PHONE IN YOUR
VEHICLE.
! IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR'S PHONE. FOLLOW
THE GAS SUPPLIER'S INSTRUCTIONS.
! IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE DEPARTMENT.
FREEZE WARNING
DRAIN HEATER IF SUBJECT TO FREEZING TEMPERATURES.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTENANCE CAN CAUSE INJURY OR PROPERTY DAMAGE. REFER TO THIS MANUAL.
FOR ASSISTANCE OR ADDITIONAL INFORMATION, CONSULT A QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS SUPPLIER.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER COMBUSTIBLE MATERIALS OR LIQUIDS
NEAR OR ADJACENT TO THIS HEATER OR ANY OTHER APPLIANCE. THIS APPLIANCE
SHALL NOT BE INSTALLED IN ANY LOCATION WHERE FLAMMABLE LIQUIDS OR VAPORS
ARE LIKELY TO BE PRESENT.
AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER.
INSTALLER: AFFIX THESE INSTRUCTIONS TO OR ADJACENT TO WATER HEATER.
OWNER: RETAIN THESE INSTRUCTIONS AND WARRANTY FOR FUTURE REFERENCE.
ALL TECHNICAL AND WARRANTY QUESTIONS SHOULD BE DIRECTED TO THE COMPANY
LISTED ON THE WARRANTY, OR RATING PLATE WHICH CAME WITH YOUR WATER HEATER.
SUBURBAN MANUFACTURING COMPANY
Post Office Box 399
Dayton, Tennessee 37321
423-775-2131
Fax: 423-775-7015
INSTALLATION REQUIREMENTS
W A R N IN G ! Installation of this appliance m ust be m ade in accordance w ith
the w ritten instructions provided in this m anual. N o agent, representative
or em ployee of Suburban or other person has the authority to change,
m odify or w aive any provision of the instructions contained in this
m anual.
C A U TIO N : If possible, do not install the w ater heater to w here the vent can
be covered or obstructed w hen any door on the trailer is opened. If this is
not possible, then the travel of the d o o r m u s t b e restricted in order to
provide a 6" m inim um clearance betw een the w ater heater vent and any door
w henever the door is opened.
C A U TIO N : D ue to the differences in vinyl siding, this appliance should not
be installed on vinyl siding w ithout first consulting w ith the m anufacturer of
the siding or cutting the siding away from the area around the appliance
vent.
C A U TIO N : In any installation in w hich the vent of this applian ce c an be
covered due to the construction o f the R V o r som e special feature of the R V
such as slide out, pop-up etc., alw ays ins ure that the appliance cannot be
operated by setting the therm o stat to the positive "O FF" position and
shutting off all electrical and gas supply to the appliance.
C A U TIO N : D o not install this appliance to w here the vent term inates below
a slide-out. This appliance is not to be installed under any overhang. It m ust
be free and clear of any type overhang.
This installation m ust conform w ith the requirem ents of the authority having
jurisdiction or in the a bs ence of such requirem ents w ith the latest edition of the
N ational F ue l G as C ode AN S I Z223.1; and the latest edition of the A m erican
N ational Standard for R ecreational Vehicles-501C . In Canada the installation
should conform w ith the follow ing standards.
A . For installation in R ecreational V ehicle
1. G as - C S A standard C S A Z240.4.2 Installation R equirem ents for Propane
A ppliances and E quipm ent in R ecreations V ehicles.
2. E lectrical - C S A standard C 22.2 N o. 148/Z240.6.2 E lectrical R equirem ents
for R ecreational V ehicles.
3. P lum bing - C S A standard CS A Z240.3.2 Plum bing R equirem ents for
R ecreational V ehicles.
B . For installation in M obile Housing
1. G a s - C S A standard C S A Z240.4.1 Installation R equirem ents for G a s
B urning A ppliances and E quipm ent in M obile H om es.
2. E lectrical - C S A standard CS A C 22.1 Canadian E lectrical C ode Part 1.
3. P lum bing - C S A standard C S A Z 240.3.1 P lum bing R equirem ents for M obile
H om es.
The appliance sha ll be disconnected from the gas supply piping system during
any pressure testing of the system .
The appliance and its gas connections shall be leak tested before placing the
appliance in operation.
A ll a ir for com bustion m ust be supplied from outside the structure. A ir fo r
com bustion m ust not be supplied from occupied spaces.
INSTALLATION INSTRUCTIONS
M inim um clearance from com bustible construction on sides, top, floor and
rear = 0 inches. Provide room for access to rear of heater for servicing.
P rovide an opening flush w ith floor in outer w all of coach as show n. W all of coach
should be fram ed as show n in Figure 1. M aintain inside dim ensions listed below .
D o not install on carpet unless the carpet is cove red by a m etal or w ood shield
covering the entire area underneath the w ater heater. If you prefer, you m ay cut
aw ay the carpet from this area.
INSTALLATION USING FLUSH MOUNT FRAME & DOOR
(S ee Figure 2 for Illustration)
A . P osition heater into fram ed opening as illustrated. S lide unit into opening until
the front of the control housing is flush w ith the exterior coach skin.
Figure 1
B . S ecure the control housing to the coach w all (fram ed opening) at the top and
sides of control housing com partm e n t u sing screw s or other suitable fasteners.
R ecess the screw s or fasteners back far enough from the front edge of control
housing (approxim ately 1 1/2") in order to clear the flange on door fram e. The door
fram e, w hen installed, m ust not overlap onto screw or other fastener head. If due
to the w all thickness, it is not possible to secure the w ater heater w ithout covering
the fastener head w ith the door fram e, it is im portant to not over tighten the
fastener and distort the control housing. O ver tightening of the fastener m ay cause
w ater heater leaks betw een the control housing and the door fram e.
N O TE : C aulk around screw or fastener heads to assure w ater tight seal.
C . Install chocks, one on each side of w ater heater, as illustrated in Figure 1A .
D . On m esa or yoder type sidewalls, flatten the w all area around the opening.
E . Caulk around fram ed opening (trailer skin) as illustrated.
F.
C aulk around d o o r fra m e using 2 beads of silicone caulking (or suitable
caulking) - one on flange to seal to control housing and one around back side of
fram e to seal to coach skin. (S ee detail A in illustration.)
G . Insert door fram e into control housing and secure with four (4) N o. 8-15 x
3 1/2" screw s provided.
H . To install door, place the tw o holes in the bottom of the door over the door pins
on the fram e. C lose the door so that the latch protrudes through the slot in the
door. Turn latch 90 degrees to fasten door.
I. The m odule board on m odels S W 12D and S W 12DE is not secured to the w ater
heater. It is to be perm anently m ounted by the installer.
The m odule board m ust be m ounted to where it is accessible for service yet out
of w ay of children. It should be located in a place w here it cannot be subjected to
m oisture, cleaning chem icals, flam m able vapors and liquids, etc.
The board and all w iring to the board m ust be protected in order to prevent
dam ages and accidental contac t w ith these parts. The m odule board m ay be
m ounted w ith tw o (2) N o. 6 x 5/8 screw s or other suitable hardw are.
MAKING WATER CONNECTIONS
A . W ater connections are m ade at the rear of the w ater heater. R efer to Figure
3 for all m odels except S W 12DE M . For S W 12DE M , refer to Figure 5. C onnect the
hot and cold w ater lines to the 1/2" fem ale pip e fitting provided on rear of tank.
These fittings are m arked "H O T" and "C O LD ". N O TE : Insid e each fitting is a
p lastic fill tube. Its purpose is to enhance w ater circulation. D O N O T R E M O V E
P LA S TIC FILL TU B E .
IM P O R TA N T: U se a pipe thread com pound su itable for potable water or pipe
thread tape on all connections to assure they w ill not leak.
B . For ease of rem oval, it is suggested that a pipe union be installed in each w ater
line.
C . Fill tank w ith water. O pen both hot and cold water faucets to expel air from
tank. W hen tank is filled and w ater flow s from faucets, clos e both faucets and
check all connections for leaks.
C A U TIO N : If you use air pressure to check for leaks, the pressure m ust not
exceed 30 P S I (in accordance w ith 4-9.1.1 of A N S I A 119.2).
N O TE : A fter leak testing, drain w ater from tank.
MAKING GAS CONNECTIONS
A . C onnect a 3/8" gas supply line to the 3/8 flare fitting at gas valve located in the
control housing. W hen m aking the gas connection, hold the gas fitting on the valve
w ith a w rench w h e n tig h te n ing the flare nut. Failure to hold fitting secure could
result in a gas leak due to fitting being dam aged. N O TE : It w ill b e n e cessary to
rem ove the grom m et from the con trol housing, m ake the gas connection at the
valve, then reinstall grom m et.
W A R N IN G ! It is im perative that grom m et and gas line through grom m et be
caulked air tight. If not tightly sealed, m oisture and potential harm ful flue
products could vent through opening and into living area of trailer. (S ee
Figure 6.)
B . Turn on gas and check all fittings and connections for leaks, using a soap and
w ater solution. C orrect even the slightest leak im m ediately.
W A R N IN G ! D o not use an open flam e to check for leaks
Figure 1A
2
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