Desa KC42N Series Owner's Operation And Installation Manual page 23

FIREPLACE
INSTALLATION
Continued
To Gas Supply
(Natural)
To External
Regulator
(Propane/LP)
Flexible Gas Line
Do NOT Kink
Control Valve
Figure 33 - Connecting Flexible Gas Line
to Millivolt 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
noncorrosive leak detection fluid
to all joints. Bubbles forming show
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 fireplace and its individual equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig (3.5 kPa)
will damage fireplace gas regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas fireplace or opening main gas
valve located on or near gas meter for natural
gas fireplace or using compressed air.
116239-01G
Equipment
Shutoff Valve
www.desatech.com
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak. Correct
all leaks at once.
5. Reconnect fireplace and equipment shutoff
valve to gas supply. Check reconnected fittings
for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 34).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas fireplace or opening main gas
valve located on or near gas meter for natural
gas fireplace or using compressed air.
3. Check all joints from propane/LP supply tank
or gas meter to equipment shutoff valve (see
Figure 35 or Figure 36). Apply noncorrosive
leak detection fluid to all joints. Bubbles
forming show a leak. Correct all leaks at
once.
Equipment
Shutoff Valve
Figure 34 - Equipment Shutoff Valve
Equipment Shutoff Valve
Propane/LP
Supply Tank
Figure 35 - Checking Gas Joints for
Propane/LP Gas Fireplace
Equipment
Shutoff Valve
Gas
Meter
Figure 36 - Checking Gas Joints for
Natural Gas Fireplace
Open
Closed
Gas Valve
Gas Valve
23