16
Figure 11 - Attaching Flexible Gas
Hose to Heater Gas Regulator
Figure 12-A - External Regulator
with Vent Pointing Down For NG
Figure 12-B - External Regulator
with Vent Pointing Down For LP
A CSA/AGA design-certied equipment shutoff valve
with
1/8-inch NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA/
AGA design-certied equipment shutoff valve from
your dealer.
The installer must supply an external regulator. The
external regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to minimum
allowable on rating label. If you do not reduce incom-
ing gas pressure, heater regulator damage could
occur. Install external regulator with the vent down as
shown in Figure
12. Pointing the vent down protects it
from freezing rain or sleet.
Installation must include 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
13). To prevent
performance problems, Propane/LP tank of less than
1
00 lb. capacity is not recommended.
IMPORTANT: Install an 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 go-
ing into pipe. Excess sealant in pipe could result
in clogged heater valves.
CAUTION: Use only a new, black iron or steel
pipe. Internally-tinned copper tubing may be used
in certain areas. Check your local codes. Use
pipe of large enough diameter to allow proper gas
volume to heater. If pipe is too small, undue loss
of pressure will occur.
CAUTION: Use pipe joint sealant that is resistant
to natural gas (NG) or liquid petroleum (LP) gas.
Figure
13 - Gas Connection
We recommend that you install a sediment
trap in the supply line as shown in Figure
1
3. Place sediment trap where it is within
reach for cleaning and 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 incorrectly,
heater may not run properly.
IMPORTANT: Hold pressure
regulator with wrench when
connecting it to gas piping
and/or ttings.
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