Procom MN180TPH Installation & Operation Instructions page 12

Typical Inlet Pipe Diameters
Use 3/8-inch black iron pipe or greater.
Installation must include an equipment
shutoff valve, union, and plugged 1/8-inch
NPT tap. Locate NPT tap within reach for
test gauge hook up. NPT tap must be up-
stream from heater (see Figure 12).
IMPORTANT: Install an equipment
shutoff valve in an accessible loca-
tion. 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.
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
pointing down as shown in Figure 13. Pointing the vent down
protects it from freezing rain or sleet.
Install sediment trap in supply line as shown in Figure 12.
Place sediment trap where it is within reach for cleaning. Place
sediment 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.
Installation of Base Stand
Before installing heater to the base , please make sure you
have the following items:
( 2 ) - Base ( 4 ) - Sheet Metal Screws
Installation Procedure:
1. Set back of heater on table with the bottom of heater
extending outside the table edge
2. Fasten Base Stand to heater using sheet metal screws.
Figure 12- Gas Connection (inches)
*A CSA/AGA design-certified equipment shutoff valve with 1/8-inch NPT tap
is an acceptable alternative to test gauge connection. Purchase the optional
CSA/AGA design-certified equipment shutoff valve from your dealer.
Fuel Supply
Tank
 
Figure 13 - External Regulator with Vent
Pointing Down
Figure 14 -