FOR PROPANE UNITS ONLY
The installer must supply an external regulator (see Figure 5). The external
regulator will reduce incoming gas pressure. If you do not reduce incoming
gas pressure, heater regulator damage could occur. lnstall external regula-
tor with the vent pointing down as shown in Figure 6. Pointing the vent down
protects it from freezing rain or sleet.
In the State of Massachusetts the gas cock must be a T-handle type. The
State of Massachusetts requires that a flexible appliance connector can
-
not exceed three feet in length.
Installation must include an equipment shutoff valve, union, and plugged 1/8
inch NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap
must be upstream from heater (see Figure 7).
IMPORTANT:
Install equipment shutoff valve in an accessible location.
The equipment shutoff valve is for turning on or shutting off the gas to
the appliance. Apply pipe joint sealant lightly to male threads. This will
prevent excess sealant from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
We recommend that you install a sediment trap in supply line as shown in
Figure 7. Locate sediment trap where it is within reach for cleaning. Install in
piping system between fuel supply and heater. Locate sediment trap where
trapped matter is not likely to freeze. A sediment trap traps moisture and con
-
taminants. This keeps them from going into heater controls. If sediment trap is
not installed or is installed incorrectly, heater may not run properly.
Figure 5 - Gas Regulator Location
For Gas inlet Connection
Figure 6 - External Regulator With
Vent Pointing Down
LP Models:
11”-14” W.C. supply pressure
Gas supplier provides external
regulator for propane gas.
NG Models:
5”-10.5” W.C. supply pressure
* Purchase the optional CSA design-certified equipment shutoff valve from your dealer.
Figure 7 - Gas Connection
CHECKING GAS CONNECTIONS
WARNING:
Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at
once.
WARNING:
Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all
joints. Bubbles forming show a leak. Correct all leaks at once.
CAUTION:
Make sure external regulator has been installed between gas supply and heater. See guidelines
under “Connecting to Gas Supply
,”