Making Connections
1. Connect plumbing to water lines taking care to make correct “COLD” and “HOT” orientation.
2. Connect 3/8” FM flared LP gas line to 3/8” M flared gas fitting. Hand tighten initial connection to
assure it is not cross-threaded, then tighten with wrench while backing up fitting with a second
wrench.
Note:
This flare fitting is a “dry” fitting, meaning no pipe dope of tape should be used
when making the connection. The gas line should be an approved type of one, continuous,
unbroken line from the propane locker to the appliance.
3. Turn on the gas and check the water heater and all connections for gas leaks with a leak detecting
solution. Never use a flame to check for gas leaks.
4. Turn on water supply line and check for water leaks.
WARNING :
NEVER install heater in a manner that is not vented to the outside. Doing so will void the
warranty and cause the heater to malfunction and could result in serious injury or death. Terminus of
flue outside boat should be above the water line.
Flue Pipe Installation
Cold In
Hot Out
Gas Connection
12
VDC
2” Flue pipe
Connection
After the unit is secured into place, the exhaust pipe is installed as follows:
1. Locate and install the flue terminus on the outside of the vessel. It must be mounted well above
the waterline, while keeping the flue pipe run under 10’. If PrecisionTemp’s optional mushroom
vent is used, it can be mounted on a vertical or horizontal surface. It must be located so that no
water can enter the flue system and no flue gasses can re-enter the living area through hatches
or other air intakes.
2. Carefully measure and cut one, continuous length of flex flue pipe to run from the 2” flue pipe on
the top of the appliance to the flue terminus. Keep length and bend of the pipe to a minimum.
2” stainless flex duct is recommended. Never use galvanized or CPVC pipe.
3. Now remove the pipe and coat the inside diameter of the flue pipe elbow with high temperature
silicone sealant or equivalent.
4. Attach either end of the flex pipe to the appliance outlet and the flue terminus. This can be done
with self-tapping screws or by pre-drilling the hole before inserting metal screws. At least two
screws must be used to secure the pipe.
NOTE:
The appliance must be disconnected from the gas supply piping system
during any pressure testing of the system at test pressures in excess of
½
psi. The
appliance must be isolated from the gas piping system during any pressure testing at
test pressures equal to or less than
½
psi. Pressure inlet to valve, 13” W.C. maximum,
11” W.C. minimum. Pressure at outlet of valve is factory set at 10”. Burner manifold
pressure is W.C. 8.9” W.C. +/- .2” at tap on burner manifold.
