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105985
VENT-FREE NATURAL GAS STOVE HEATER
SUN VALLEY STOVE COMPANY
For more information, visit www.desatech.com
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INSTALLATION
Continued
WARNING: Never use an open
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming
show a leak. Correct all leaks at
once.
WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
CHECKING GAS
CONNECTIONS
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 sup-
ply 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 ei-
ther using compressed air or opening
main gas valve located on or near gas
meter.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 20).
2. Pressurize supply piping system by ei-
ther using compressed air or opening
main gas valve located on or near gas
meter.
3. Check all joints from gas meter to
equipment shutoff valve (see Figure
21). Apply mixture of liquid soap and
water to gas joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Pressure Testing Heater Gas
Connections
1. Open equipment shutoff valve (see Fig-
ure 20).
2. Open main gas valve located on or near
gas meter.
3. Make sure control knob of heater is in
the OFF position.
4. Check all joints from equipment shutoff
valve to control valve (see Figure 21).
Apply mixture of liquid soap and wa-
ter to gas joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater,
pages 14 through 17). Check all other
internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, remote-ready models, page
15, variable manual models, page 16).
Figure 20 - Equipment Shutoff Valve
Closed
Equipment
Shutoff
Valve
Gas Meter
Equipment
Shutoff
Valve
Control Valve Location
Figure 21 - Checking Gas Joints
Open
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
We recommend that you install a sediment
trap in supply line as shown in Figures 18
and 19, page 11. Locate sediment trap where
it is within reach for cleaning. Install in
piping system between fuel supply and
heater. Locate sediment trap where trapped
matter is not likely to freeze. A sediment
trap traps moisture and contaminants. This
keeps them from going into heater controls.
If sediment trap is not installed or is in-
stalled wrong, heater may not run properly.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check re-
connected fittings for leaks.