14
CAUTION
: Use only new black iron or steel pipe. Internally tinned copper tubing may be used in certain areas. Check
your local codes. Use pipe of ½ inch diameter or greater to allow proper volume gas to heater. If pipe is too small, loss of
pressure will occur. 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 Fig. 12).
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.
CAUTION
: Use pipe joint sealant that is resistant to gas (PROPANE or NG). We recommend that you install a sediment trap
in a supply line as shown in Fig. 12. Locate sediment trap where it is within reach for cleaning and not likely to freeze.
Install in the piping system between fuel supply and heater. A sediment trap traps moisture and contaminants. This keeps
them from going into heater controls. If sediment trap is not installed or is installed incorrectly, heater may not run properly.
CAUTION
: Avoid damage to regulator. Hold gas regulator with wrench when connecting into gas piping and/or fittings. NG
Models: 5 in. to 10.5 in. W.C. Gas supplier provides external regulator for Propane/LP gas.
*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See "Accessories".
** Minimum inlet pressure for purpose of input adjustment.
Fig 12 - Gas Connection
3 in. Minimum**
Test
Gauge
Connection *
Sediment
Trap
Tee Joint
Reducer
Bushing to
1/8 in NPT
1/8 in NPT
Plug Tap
Tee Joint
Pipe Nipple
Gap
3/8 in NPT
Pipe Nipple
Ground Joint
Union
Equipment
Shutoff
Valve
Inlet Pipe From Gas Meter
(11 in W. C. to 14 in W. C.
Pressure)