Astria.US.com
126823-01C
13
Installation Items Needed
Before installing appliance, make sure you
have the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved
fl
exible gas line with gas connec-
tor (if allowed by local codes) (not provided)
* An equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge
connection. Purchase the optional equipment
shutoff valve from your dealer.
For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not
reduce incoming gas pressure, heater regula-
tor damage could occur. Install external regu-
lator with the vent pointing down as shown in
Figure 12
. Pointing the vent down protects it
from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. In-
ternally-tinned copper tubing
may be used in certain areas.
Check your local codes. Use
pipe of 1/2" diameter or greater
to allow proper gas volume to
heater. If pipe is too small, undue
loss of volume will occur.
Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from appliance
(see Figure 13).
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.
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
Figure 12 - External Regulator With Vent
Pointing Down
INSTALLATION
Continued
Check your building codes for any special
requirements for locating equipment shutoff
valve to
fi
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.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
* Purchase the optional equipment shutoff
valve from your dealer.
**Minimum inlet pressure for purpose of input
adjustment.
Figure 13 - Gas Connection
Tee Cap Pipe
Joint
Nipple
3" Minimum
Gas
Regulator
PROPANE/LP
From
External Regulator
(11" W.C.** to 14"
W.C. Pressure)
NATURAL
From
Gas Meter (5" W.C.**
to 10.5" W.C.
Pressure)
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
Sediment Trap
