Procom WZN18TLA Owner's Operation And Installation Manual page 10

CONNECTING TO GAS
SUPPLY
WARNING: A qualified ser-
vice person must connect
heater to gas supply. Follow all
local codes.
WARNING: This appliance
requires 1/2" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.
WARNING: Never connect
heater to private( non- utility)
gas wells. This is commomly
known as well head gas.
CAUTION: Never connect
heater directly to the natural or
propane/LP supply. This heater
requires an external regulator
(not supplied). Install the exter-
nal regulator betw een the
heater and natural or propane/
LP supply.
INSTALLATION ITEMS
NEEDED
Before installing heater, make sure
you have the items listed below
l
external regulator (supplied by
installer)
l piping (check local codes)
l sealant (resistant to natural or
propane/LP gas)
l equipment shutoff valve
l test gauge connection
l sediment trap
l tee joint
l
pipe wrenc
Figure 12- Attaching Heater
Base to Fireplace Floor
IMPORTANT : Hold gas regulator with
wrench when connecting flexible gas
hose
2. Locate masonry screws in hard-
ware package.
3. Position heater base assembly in
fireplace.
4. Place logs in their proper position
on heater base.
5. Center heater base and logs front-
to- fr ont and side-to- side in
fireplace.
6. Carefully remove logs without
moving heater base.
7. Mark screw locations through
holes in mounting brackets (see
Figure 12). If installing in a brick-
bottom fireplace, mark screw lo-
cations in mortar joint of bricks.
8. R e m o v e h e a te r b a s e f r o m
fireplace.
9. Drill holes at marked locations
using 3/16" drill bit.
10. Attach base assembly to
fireplace floor using two masonry
screws (in hardware package)
(see Figure 12).
A CSA/AGA design-certified equip-
ment shutoff valve with 1/8" NPT tap
is an acceptable alternative to test
gauge connection. Purchase the op-
tional CSA/AGA design-certified
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 between 11
and 14 inches of water. If you do not
reduce incoming gas pressure ,
heater regulator
damage could occur. Install external
regulator with the vent down as
shown in Figure 13. Pointing the vent
down protects it from freezing rain or
sleet.
Installation must include equip-
ment shutoff valve, union, and
10
plugged 1/8" NPT tap. Locate
NPT tap within reach for test
gauge hook up. NPT tap must be
upstream from heater (see Fig-
ure 14).
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
going into pipe. Excess sealant in
pipe could result in clogged heater
valves.
CAUTION: Only use a new,
black iron or steel pipe. Inter-
nally-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 natu-
ral gas(NG) or liquid petroleum
(LP) gas.
Figure 13-A-External
Regulator with Vent Pointing
Down For NG
Figure 13-B-External
Regulator with Vent Pointing
Down For LP