Procom MN100TPA Connecting to GAS Supply, Typical Inlet Pipe Diameters, Important Install

INSTALLATION

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.

WARNING: Never connect heater private (non-utility) gas well. T his gas is c om m only known as well-head gas.

IMPORTANT: Check your gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 10.5 inches of water. If gas line pressure is higher, heater regulator damage could occur.

CAUTION: Use only new, black iron or steel pipe . Internally-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.

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 must include an equip- ment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 12) .

Figure 12 -Gas Connection

*A CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design-certified equipment shutoff valve from your dealer. See Accessories, page 17.

IMPORTANT: Install

an

equipment

Install sediment trap in supply line

shutoff valve in an accessible

as shown in Figure 12. Locate

location. The

equipment

shutoff

sediment trap where it is within

valve

is

for turning

on

or

shutting

reach

for

cleaning.

Locate

off the gas to the appliance.

sediment

trap

where

trapped

Apply pipe joint sealant lightly to

matter is not likely to freeze. A

male threads. This will prevent

sediment

trap

traps

moisture and

excess sealant from going into

contaminants.

This

keeps

them

pipe. Excess sealant in pipe could

from going into heater controls. If

result

in

clogged heater

valves.

sediment

trap is

not

installed

or is

installed

wrong,

heater

may

not run properly.

CAUTION: Use

pipe

joint

IMPORTANT:

Hold

pressure

regulator with

wrench

when

sealant

that

is

resistant

to

connecting it to gas piping and/or

natural

gas.

fittings.

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