Desa CGCFTP - Manual (Page 18)

www.desatech.com 111044-01F 18
4. Apply pipe joint sealant lightly to male threads
of gas connector attached to flexible gas line/
equipment shutoff valve (see Figure 26).
5. Check all gas connections for leaks. See
Checking Gas Connections.
6. Replace branch support back into fireplace.
Feed flexible gas line into fireplace base area
while replacing branch support. Make sure
the entire flexible gas line is in fireplace base
area. Reattach branch support to fireplace with
screws removed in step 2 on page 17.
INSTALLATION
Continued
Figure 26 - Attaching Flexible Gas Line
to Equipment Shutoff Valve
Flexible Gas Line from
Fireplace Gas Regulator
Provided with Fireplace
To Fireplace
Gas Regulator Equipment Shutoff
Valve Provided by
Installer
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: Make sure exter-
nal regulator has been installed
between propane/LP supply and
fireplace. See guidelines under
Connecting to Gas Supply,
page 16.
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 equipment
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 equipment
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 system.
Apply a noncorrosive leak detection fluid to
gas 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.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 27).
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 natural
or propane/LP supply to equipment shutoff
valve (see Figures 28 and 29, page 19). Ap-
ply a noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 27 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
PROPANE/LP
To External
Regulator
NATURAL
To Gas Supply