Procom MD100TBA Installation Manual download pdf (Page 16)

www.usaprocom.com

200000-01B16

INSTALLATION

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping

and connections for leaks after

installing or servicing. Correct

all leaks at once.

WARNING: Never use an

open ame to check for a leak.

Apply a mixture of liquid soap

and water to all joints. If bubbles

form, there is a leak. Correct all

leaks at once.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1. Disconnect heater with its appliance main

gas valve (control valve) and equipment

shutoff valve from gas supply piping sys-

tem. Pressures in excess of 1/2 PSIG will

damage heater regulator.

2. Cap off open end of gas pipe where equip-

ment shutoff valve was connected.

3. Pressurize supply piping system by either

opening propane/LP supply tank valve

for propane/LP gas or opening main gas

valve located on or near gas meter for

natural gas or using compressed air.

Figure 14 - Gas Connection

* Purchase the optional CSA design-certied equipment

shutoff valve from your dealer.

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.

For propane/LP gas, t

he 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" of water. If you do not reduce incom-

ing gas pressure, heater regulator damage

could occur. Install external regulator with

Figure 15 - External Regulator

with Vent Pointing Down

External

Regulator with

Vent Pointing

Down

Propane/LP

Supply Tank

Equipment

Shutoff Valve

Ground

Joint Union

3/8" NPT

Pipe Nipple

Tee Joint

Reducer

Bushing to

1/8" NPT

1/8" NPT

Plug Tap

Test Gauge

Connection*

Sediment

Trap

Tee Joint

Pipe Nipple

Gap

3" Miniumum

the vent pointing down as shown in Figure

15. Pointing the vent down protects it from

freezing rain or sleet.

Install sediment trap in supply line as shown

in Figure 14. 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 contami-

nants. This keeps them from going into heater

controls. If sediment trap is not installed or is

installed wrong, heater may not run properly.

Natural Gas

From Gas

Meter (4" W.C.

to 10.5" W.C.

Pressure)

Propane/LP

From External

Regulator (11" W.C.

to 14" W.C. Pressure)

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 75 76

Comments to this Manuals

No comments