This installation must conform with the requirements of the authority having jurisdiction
or in the absence of such requirements with the latest edition of the National Fuel
Gas Code ANSI Z223.1/NFPA 54; and the latest edition of the American National
Standard for Recreational Vehicles NFPA 1192.
In Canada
, the installation should conform with the following standards:
A. For installation in Recreational Vehicle
1.
Gas - CSA standard CSA Z240.4.2-08 Installation Requirements for Propane
Appliances and Equipment in Recreations Vehicles.
2.
Electrical - CSA standard C22.2 No. 148/Z240.6.2-08/C22.2 No. 148-08
Electrical Requirements for Recreational Vehicles.
3.
Plumbing - CSA standard CSA Z240.3.2 Plumbing Requirements for
Recreational Vehicles.
B.
The appliance shall be disconnected from the gas supply piping system during
any pressure testing of the system.
C.
The appliance and its gas connections shall be leak tested before placing the
appliance in operation.
D.
All air for combustion must be supplied from outside the structure. Air for
combustion must not be supplied from occupied spaces.
E.
Minimum clearance from combustible construction on sides and top - 1/4 inches.
Provide room for access to rear of heater and at left side for servicing.
F.
Choose a location for installation out of the way of wires, pipes, etc. that might
interfere with the installation.
G.
When an appliance is installed directly on carpeting, tile or other combustible
material, other than wood flooring, the appliance shall be installed on a metal
or wood panel the full depth of the appliance. If preferred the carpeting, tile or
combustibles materials, other than wood may be cut away the full length of the
appliance plus the appliance minimum clearances to combustibles.
H.
Good grounding of the unit is recommended to mitigate static charge built up by
attaching a 12 gage ground wire to the unit case at the green grounding screw
shown in
Figure 5
and securely fasten the ground wire to the RV metal frame.
I.
Do not install the water heater with the vent facing toward the forward end of the
coach.
See Figures 1, 2 and 3.
J.
There must be access for removing unit for service.
INSTALLATION WITHOUT REPLACEMENT PANEL
1.
Locate area for installation of the unit. The unit should be installed as close to wall
as possible. Mark wall as shown in
Figure 4
and cut a 3.750" Diameter hole for vent
installation. On mesa or yoder type side walls, it may be required to flatten area
where vent is to be installed to assure seal around vent assembly.
2.
Place unit on floor (verify vent cap lines up with exhaust tube and combustion air
opening in unit).
a.
Drain lines must be connected to the system and condensation drains on
the On Demand water heater and ran to the outside of the RV. Drain Lines
should be as short as possible and must maintain a drop of ¼” per foot from
unit. See
Figure 5
.
3.
Install vent assembly. See
Figure 6
.
a.
Vent cap must be ordered separately. See
TABLE 1
for vent sizes and part
numbers. A minimum overlap of 1.25" is required on exhaust.
b.
Apply a bead of silicone around the vent cap as shown in
Figure 6
.
c.
Install vent cap as shown in
Figure 6
with screws. Insure assembly is sealed
to outside wall to prevent leaks.
4.
Screw the front of the unit to the floor using the two brackets as shown in
Figure 5
. If
necessary, the brackets can be moved to the rear of the unit as shown in
Figure 7B.
5.
Make gas, water and electrical connections following instructions contained in
this manual supplied with the Suburban NAUTILUS (IW60) On Demand Water
Heater.
INSTALLATION USING REPLACEMENT PANEL
A replacement panel is used when replacing Suburban 6, 10, 12, and 16 gallon tank
units and Atwood Style 6 and 10 gallon tank units.
1.
On mesa or yoder type sidewalls, flatten the wall area around the opening.
2.
Apply a continuous line of suitable caulk on the RV wall around all four sides
of the opening and around back side of replacement panel frame as shown in
Figure 8
. Required to create water tight seal of the frame to the RV wall.
3.
Center and insert caulked replacement panel frame into opening. Push frame
firmly against RV wall over caulking previously applied in step 2. Secure frame
with the eight (8) supplied screws into RV wall as shown in
Figure 8
.
4.
Locate the water heater cabinet approximately even with the inside RV wall.
See
Figure 7B
. If securing the unit to the floor using the FRONT mounting
brackets, proceed to STEP 5. To mount the water heater using the REAR
mounting method, remove the two mounting brackets from the front of the unit
and secure them to the threaded holes at the rear of the unit. Screw the rear of
the unit to the floor using the two brackets. See
Figure 7B
.
5.
Using the gasket supplied with the kit, apply the gasket beginning at the center
bottom of the replacement panel frame. Adhere the adhesive side of the gasket
to the replacement panel frame and install the gasket all the way around the
frame. Insure the ends of the gasket meet at the center bottom of the access
panel frame.
6.
Attach the replacement panel to the frame as shown in
Figure 8
using the five
(5) screws provided.
7.
Vent cap must be ordered separately. See
Table 1
for vent sizes and part numbers.
There must be a minimum of 1.25" (31.8mm) overlap of vent assembly tube over
exhaust tube on the On Demand Water Heater and the replacement panel must
compress the replacement panel gasket. See
Figure 7A
.
a. Apply a bead of silicone around the vent cap as shown in
Figure 8
.
b. Install vent cap as shown in
Figure 8
with four (4) screws. Insure assembly
is sealed to outside wall to prevent leaks.
8.
Screw the front of the unit to the floor using the two brackets as shown in
Figure 5
.
9.
Apply silicone caulk around the beveled edges of the replacement panel as
shown in
Figure 8
. Do not caulk the bottom of the replacement panel.
10.
Make gas, water and electrical connections following instructions contained in this
manual supplied with the Suburban Nautiluis IW60 On Demand Water Heater.
11.
Drain lines must be connected to the system and condensation drains on the On
Demand Water Heater and ran to the outside of the RV. Drain Lines should be
as short as possible and must maintain a minimum drop of ¼” per foot. (6.4mm
per 305mm) from unit. See
Figure 5
.
ACCESS PANEL PART NUMBERS
BRAND
CAPACITIES
PART NUMBER
SUBURBAN
6 GALLON
6276APW (Polar White)
SUBURBAN
10, 12, 16 GALLONS
6277APW (Polar White)
ATWOOD
6 GALLON
521147 (Polar White)
ATWOOD
10 GALLON
521150 (Polar White)
VENT CAP PART
NUMBER
VENT CAP
LENGTH
"X" MAX DIMENSION
260616
0 - 1 inches
1.171 inch
260617
1 - 2 inches
2.171 inch
260618
2 - 3 inches
3.171 inch
260638
5 - 6 inches
6.171 inch
TABLE 1
MAKING ELECTRICAL CONNECTIONS
12 VOLTS D.C.
A.
The electrical connections must be made in accordance with local codes and
regulations. In the absence of local codes and regulations, refer to the latest
edition of the National Electrical Code NFPA 70.
In Canada
, the electrical installation should conform with CSA standard Z240.6.2-
08/C22.2 No. 148-08 Electrical Requirements for Recreational Vehicles.
B.
Make the 12 Volt D.C. electrical connections following the wiring diagram
illustrated in
Figure 11
.
If the power supply is to be from a convertor, we recommend that the converter
system be wired in parallel with the battery. This will serve two purposes:
1.
Provide a constant voltage supply
2.
Filter any A.C. spikes or volt surges
We recommend insulated terminals be used for all electrical connections.
INSTALLATION OF SWITCH AND LIGHT
ASSEMBLY
(SEE FIGURE 12)
1.
ON/OFF switch is wired as shown in wiring diagram. See
Figure 11
.
2.
There is a connection for a lockout light. (If used, this light will come on if the unit
goes into lockout. Water must be turned off and back on to re-cycle the unit.)
3.
Connect ORANGE wire to LED lamp (+) and BLUE wire to LED lamp (-).
INSTALLATION OF OPTIONAL ON DEMAND
CONTROL CENTER
(SEE FIGURE 13)
WARNING
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control center and could
cause shock or fire hazard. Do not short out terminals
on gas valve or primary control to test. Short or incorrect
wiring will damage thermostat and could cause personal
injury and/or property damage.
1.
On Demand Control Center is wired as shown in wiring diagram. See
Figure 11
.
2.
Locate the On Demand CONTROL CENTER on a wall surface adjacent to the
On Demand water heater.
3.
Remove back cover from control center by depressing latch at bottom.
4.
Remove center knockout from back cover. Drill hole for wiring from control
center. See
Figure 14.
5.
Mount back cover to the wall.
6.
Route wiring through back cover and hole into wall.
7.
Connect the two white wires from the On Demand Control Center to the two
white wires from the On Demand water heater. See
Figure 11
.
The optional On Demand CONTROL CENTER displays the water temperature and
also allows outlet water temperature to be adjusted (130°F maximum).
ON DEMAND CONTROL CENTER
PART NUMBER
BLACK
161253
WHITE
161252
MAKING DRAIN CONNECTIONS
A.
Drain connections are made at the front of the water heater. Refer to
Figure 5
.
Connect 5/8” ID hose to system drain fitting provided on front of unit. Connect
½” ID hose to condensation drain fitting provided on front of unit.
B.
Drain lines must run to the outside of the RV. Drain lines should be as short as
possible and must maintain a minimum drop of ¼” per foot. (6.4mm per 305mm).
See
Figure 5
.
MAKING WATER CONNECTIONS
A.
Water connections are made at the front of the water heater. Refer to
Figure 5
.
Connect the hot and cold water lines to the 1/2” NPT female pipe fitting provided
on front of unit. These fittings are marked “HOT” and “COLD”.
3
