Procom ML060HBA 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
T h r e a d ) i n l e t c o n n e c t i o n
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
t h e
supply an
r e d u c e
*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 up.
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.
Apply pipe joint sealant lightly to
male threads. This will prevent
Figure 14 -Gas Connection
d e s i g n - c e r t i f i e d e q u i p m e n t
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
NPT tap must be
9
"
s h u t o ff v a l v e
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 for c l e a n i n g .
sediment trap where
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
not run properly.
IMPORTANT: Hold
regu lator with w rench
connecting it to gas piping and/or
fittings.
:
WARING Do not over tighten gas
connections.
NPT tap is
f r o m
L o c a te
trapped
may
pressure
when