Desa VsGF28PTF - Manual (Page 15)

www.desatech.com 119303-01A 15
CHECKING GAS CONNECTIONS
WARNING: Test all gas pip-
ing and connections, internal
and external to unit, for leaks
after installing or servicing. Cor-
rect all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak
detection fluid to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
insTallaTion
Continued
Figure 20 - Attaching Flexible Gas Lines
Flexible Gas Line
from Fireplace
Gas Regulator
To Fireplace
Gas Regulator
Equipment
Shutoff Valve
Provided by
Installer
Propane/LP
To External
Regulator
Natural Gas
To Gas Meter
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is provided to allow accessibility
from the fireplace (see Figure 20).
The flexible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
4. Attach the flexible gas line to gas supply (see
Figure 20). Check tightness of flexible gas
line attached to gas regulator of fireplace (see
Figure 20).
5. Check all gas connections for leaks. See
Checking Gas Connections, page 16.
6. Replace log base assembly back into fireplace.
Feed flexible gas line into fireplace base area
while replacing log base assembly. Make sure
the entire flexible gas line is in fireplace base
area. Reattach log base assembly to fireplace
with screws removed in step 2.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect fireplace with its main gas valve
(control valve) and equipment shutoff valve
from gas supply piping system. Pressures
in excess of 1/2 psig will damage fireplace
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 noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. 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 21).
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 to equipment
shutoff valve for natural gas or propane/LP
supply to equipment shutoff valve for propane/
LP (see Figures 22 and 23, page 16). Apply
noncorrosive leak detection fluid to all joints.
Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 21 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve