Desa WMN10 ユーザーズマニュアル

www.desatech.com

123995-01C

Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-

ure 14).

2. 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.

3. Check all joints from gas meter for natu-

ral or propane/LP supply to equipment
shutoff valve (see Figure 15 or 16). Apply
a noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.

4. Correct all leaks at once.

INSTALLATION

Continued

Figure 14 - Equipment Shutoff Valve

Equipment
Shutoff Valve

Open

Closed

Propane/LP
Supply Tank

Control Valve Location

Figure 16 - Checking Gas Joints for

Propane/LP Gas

Figure 15 - Checking Gas Joints for

Natural Gas

Control
Valve
Location

Gas Meter

Equipment
Shutoff
Valve

Equipment Shutoff Valve

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping

and connections, internal and

external to unit, for leaks after

installing or servicing. Correct

all leaks at once.

WARNING: Never use an

open flame to check for a leak.

Apply a noncorrosive leak detec-

tion fluid to all joints. Bubbles

forming show a leak. Correct all

leaks at once.

CAUTION: For propane/LP

gas, make sure external regula-

tor has been installed between

propane/LP supply and heater.

See guidelines under Connect-

ing to Gas Supply, page 10.

PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance

main gas valve (control valve) and equip-
ment shutoff valve from gas supply piping
system. 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.

4. Check all joints of gas supply piping sys-

tem. Apply a noncorrosive leak detection
fluid to all joints. Bubbles forming show a
leak.

5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff

valve to gas supply. Check reconnected
fittings for leaks.