Procom ML200HBA Owner's Operation And Installation Manual page 9

CONNECTING TO GAS SUPPLY
WARNING: A qualified
service person must connect
heater to gas supply. Follow all
local codes.
WARNING: This appliance
"
requires a 3/8 NPT (National
Pipe Thread) inlet connection
to the pressure regulator.
CAUTION: Never connect
h e a t e r d i r e c t l y
propane/LP supply. This heater
requires an external regulator
( n o t s u p p l i e d ) . I n s t a l l
external regulator between the
heater and propane/LP supply.
The installer must
external regulator. The external
regulator will reduce incoming gas
p r e s s u r e . Yo u m u s t
incoming gas pressure to between
11 and 14 inches of water. If you
do not reduce incoming
pressure, heater regulator damage
c o u l d o c c u r . I n s t a l l
regulator with the vent
down as shown in Figure 13.
Pointing the vent down protects it
from freezing rain or sleet.
Figure 13 - External Regulator with
Vent Pointing Down
INSTALLATION
t o t h e
From External
t h e
LP Gas Regulator
supply an
r e d u c e
Figure 14 -Gas Connection
*A CSA/AGA design-certified equipment shutoff valve with 1/8
gas
an acceptable alternative to test gauge connection. Purchase the optional
C S A / A G A
e x t e r n a l
your dealer. See Accessories, page 17.
pointing
CAUTION: Use only new,
b l a c k i r o n
Internally-tinned copper tubing
may be used in certain areas.
Check your local codes. Use pipe
of large enough
allow proper gas volume to heater.
I f p i p e
undue loss of pressure will occur.
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,
use 1/2" or greater pipe.
Installation
equipment shutoff valve, union,
and plugged 1/8
NPT tap within reach for test gauge
hook
upstream from heater (see Figure
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.
d e s i g n - c e r t i f i e d
o r s t e e l p i p e .
diameter to
i s t o o s m a l l ,
must include an
"
NPT tap. Locate
up. NPT tap must be
9
e q u i p m e n t s h u t o f f
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
sealant that is resistant to
liquid petroleum (LP) gas.
Install sediment trap in supply line
as shown in Figure 14. Locate
sediment trap where it is within
r e a c h f o r c l e a n i n g .
sediment trap
matter is not likely to freeze. A
sediment trap traps moisture and
contaminants. This
from going into heater controls. If
sediment trap is not installed or is
installed wrong,
not run properly.
IMPORTANT: Hold
regulator with
connecting it to gas piping and/or
fittings.
"
NPT tap is
v a l v e f r o m
L o c a t e
where trapped
keeps them
heater may
pressure
wrench when