Desa HEARTH CDCFTN Owner's Operation And Installation Manual page 18

INSTALLATION
Continued
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
fireplace. See guidelines under
Connecting to Gas Supply ,
pages 16 and 17.
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 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 lo-
cated 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 fit-
tings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG
(3.5 kPa)
1. Close equipment shutoff valve (see Figure 23).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve lo-
cated 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 sup-
ply to equipment shutoff valve for propane/LP
(see Figures 24 or 25). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Equipment
Shutoff
Valve
Figure 23 - Equipment Shutoff Valve
18
Pressure Testing Fireplace Gas
Connections
1. Open equipment shutoff valve (see Figure 23).
2. Open main gas valve located on or near gas
3. Make sure control knob of fireplace is in the
4. Check all joints from equipment shutoff valve
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace,
7. Turn off fireplace (see To Turn Off Gas to Ap-
Figure 25 - Checking Gas Joints (Natural
Open
ON
POSIT
O
Closed
POS
www.desatech.com
meter for natural gas or open propane/LP sup-
ply tank valve.
OFF position.
to gas regulator (Thermostat-Controlled Mod-
els), or to gas control valve (Remote-Ready
Models) (see Figures 24 or 25). Apply non-
corrosive leak detection fluid to all joints.
Bubbles forming show a leak.
pages 21 through 26). Check all other inter-
nal joints for leaks.
pliance, page 22 for Thermostat-Controlled
Models or page 24 for Remote-Ready Models).
Gas Regulator or
Gas Control Valve
Figure 24 - Checking Gas Joints
(Propane/LP Only)
Gas Regulator or
Gas Control Valve
Gas Only)
Equipment
Shutoff
Valve
Propane/LP
Supply
Tank
Equipment
Shutoff Valve
Gas Meter
111244-01C