Connecting To Gas Supply - Vanguard VP1000BTA Owner's Operation And Installation Manual

INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
WARNING: This appliance re-
quires a 3/8" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an
external regulator (not supplied).
Install the external regulator be-
tween the heater and propane/LP
supply.
The installer must supply an external regu-
lator. The external regulator will reduce
incoming gas pressure. You must reduce
incoming gas pressure between 11 and 14
inches of water. If you do not reduce incom-
ing gas pressure, heater regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
12. Pointing the vent down protects it from
freezing rain or sleet.
Propane/LP
Supply Tank
Figure 12 - External Regulator With Vent
Pointing Down
104266
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe 3/8"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
Installation must include an equipment
shutoff valve, ground joint 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 13).
IMPORTANT: Install an equipment shutoff
valve in an accessible location. The equip-
ment shutoff valve is for turning on or
shutting off the gas to the appliance.
Ground Joint Union
Equipment
Shutoff Valve *
From External
External
Regulator
Regulator
(11" W.C. to
14" W.C.
Pressure)
Vent
Pointing
Down
Figure 13 - Gas Connection
* An CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an
acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design-
certified equipment shutoff valve from your dealer. See Accessory, page 18.
OWNER'S MANUAL
3/8" NPT
Pipe Nipple
3" Minimum
9
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 seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Install sediment trap in supply line as shown
in Figure 13. Locate sediment trap where it
is within reach for cleaning. Locate sedi-
ment 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.
IMPORTANT: Hold pressure regulator
with wrench when connecting it to gas pip-
ing and/or fittings.
Pressure
Regulator
Heater
Cabinet
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Tee
Joint
Sediment Trap
Pipe
Nipple
Cap
Test
Gauge
Connection *
Continued