Desa VF-24N-MHD - Manual (Page 14)

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INsTallaTIoN
Continued
4. Check all joints from equipment shutoff valve
to control valve (see Figure 14 or 15). Apply
noncorrosive leak detection fluid to all joints.
Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 15).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli-
ance, page 18).
Figure 13 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
Figure 15 - Checking Gas Joints for
Propane/LP Gas
Control Valve Location
Propane/LP
Supply Tank Equipment Shutoff Valve
Figure 14 - Checking Gas Joints for
Natural Gas
Gas Meter
Equipment Shutoff Valve
Control Valve
Location
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 heater 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 13).
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 sup-
ply to equipment shutoff valve for propane/LP
(see Figure 14 or 15). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 13).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of heater is in the OFF
position.
Place Lava Rock and
Small Decorative
Logs in Front of
Burner
Place
Glowing
Embers
on Burner
Ports
Figure 16 - Placement of Embers and
Lava Rock
ADDING EMBERS, LAVA ROCK AND
DECORATIVE LOGS
The effect of glowing embers is created by placing
ember material on the front burner.
1. Make sure the heater is OFF and has cooled
if it has been running.
2. Gently remove embers from the bag using
gloves or tweezers (recommended to prevent
skin irritation). Separate the pieces.
3. Place ember pieces, one at a time, over ports
on flat burner (see Figure 16). Do NOT place
ember material anywhere else on the unit.
Use only ember material supplied with unit (12
one inch square pieces). Excessive ember mate-
rial may produce carbon monoxide or soot.