Connecting To Gas Supply - Procom ML170EPC Owner's Operation And Installation Manual

INSTALLATION
continued
Installing Bottom Bracket
(See Figure 10)
1. Install bottom bracket to heater
bottom with two screws. It may
be more convienent to remove
heater from wall mounting
bracket to attach bottom bracket
2. Place heater on mounting
bracket
3. Locate two bottom mounting
holes on wall. These holes are
near bottom on heater (see
Figure 10).
Figure 10 - Installing Bottom Bracket
4. Mark screw locations on wall.
5. Remove heater from mounting
bracket.
6. If installing bottom mounting
screws into hollow or solid wall,
install wall anchors. Follow
steps 1 through 4 under Attach
ing To Wall Anchor Method. If
installing bottom mounting
screw into wall stud, drill holes
at marked locations using 9/64
drill bit.
7. Replace heater onto mounting
bracket.
8. Tighten both screws until heater
is firmly secured to wall. Do not
over tighten.
CONNECTING TO GAS
SUPPLY
WARNING:
service person mu st co nn ec t
heater to gas supply. Follow all
local codes.
WARNING:
"
requires a 3/8 NPT (National
Pipe Thread) inlet connection
to the pressure regulator.
WARNING:
tighten gas connections.
CAUTION:
heater directly to the propane/
LP supply. This heater requires
an external regulator (not
supplied). Install the external
regulator between the heater
and propane/LP supply.
CAUTION:
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,
CAUTION:
sealant that is resistant to
liquid petroleum (LP) gas.
CAUTION:
to regulator. Hold gas regulator
with wrench when connecting to
gas piping and/or fittings.
INSTALLATION NEEDS
"
Before installing heater, make sure
you have the items listed below.
l piping (check local codes)
l sealant (resistant to Propane/
LP gas)
l equipment shutoff valve*
l ground joint union
l test gauge connection*
l sediment trap
l tee joint
l pipe wrench
9
*A CSA/AGA design-certified
equipment shutoff valve with 1/8
NPT tap is an acceptable alternative
to test gauge connection.
A qualified
The installer must supply an
external regulator. The external
regulator will reduce incoming gas
pressure. You must reduce
This appliance
incoming gas pressure to between
11 and 14 inches of water. If you
d o n o t re d u c e in c o m in g g a s
pressure, heater regulator damage
c o u l d o c c u r . In s t al l ext e rn a l
Do not over
regulator with the vent pointing
d o w n as sho w n in F ig u re 11 .
Pointing the vent down protects it
from freezing rain or sleet.
Never connect
Use only new,
Figure 11 - External Regulator with
Use pipe joint
Typical Inlet Pipe Diameters
All models up to 20,000 BTU's use
3/8'' or greater pipe;
All models 25,000 BTU's and higher,
Avoid damage
use 1/2" or greater pipe.
Installation must include an equip-
ment shutoff valve, union, and
plugged 1/8
tap within reach for test gauge hook
up. NPT tap must be upstream from
heater(see Figure 12).
"
Vent Pointing Down
"
NPT tap. Locate NPT