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121353-01H 15
CAUTION: Use only new,
-
Installation must include an equipment shutoff
valve, union, and plugged 1/8" NPT tap. Lo-
cate NPT tap within reach for test gauge hook
up. NPT tap must be upstream from heater
(see Figure 14).
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.
Check your building codes for any special
requirements for locating equipment shutoff
valve to replaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
INSTALLATION
Continued
* Purchase the optional equipment shutoff
valve from your dealer. See Accessories,
page 29.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection
Gas Control
3" Minimum
Equipment
Shutoff Valve
With 1/8" NPT
Tap*
Approved Flexible Gas Hose
(if allowed by local codes)
Pipe Tee
Nipple Cap Joint
Sediment Trap
Natural Gas
From Gas Meter (5" W.C.**
to 10.5" W.C. Pressure)
From External Regulator
(11" W.C.** to 14" W.C.
Pressure)
We recommend that you install sediment trap
in supply line as shown in Figure 14. 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
contaminants. This keeps them from going
into heater controls. If sediment trap is not
installed or is installed wrong, heater may
not run properly.
CHECKING GAS CONNECTIONS
and connections, internal and
external to unit, for leaks after
WARNING: Never use an
-
-
Connect-
ing to Gas Supply