Superior VD1824NM Installation And Operation Instructions Manual page 14

Installation Items Needed
Before installing heater, 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
* A 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 13. Pointing the vent down protects it
from freezing rain or sleet.
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 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 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.
14
INSTALLATION
Continued
Check your building codes for any special
requirements for locating equipment shutoff
valve to appliances.
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.
Propane/LP
Supply Tank
Figure 13 - External Regulator With Vent
Equipment Shutoff
Valve With 1/8"
NPT Tap*
Approved
Flexible
Gas Hose (if
allowed by
local codes)
Gas
Control
* Purchase the optional equipment shutoff
valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
SuperiorFireplaces.US.com
Pointing Down
PROPANE/LP
From External
Regulator (11"
W.C.** to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C.** to
3" Minimum
Cap
Sediment Trap
Figure 14 - Gas Connection
External
Regulator
Vent
Pointing
Down
10.5" W.C.
Pressure)
Pipe Tee
Nipple Joint
126838-01C