Desa CVDA24M Owner's Manual page 7

We recommend that you install a sediment trap
in the supply line as shown in Figure 4, page 6.
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 contami-
nants. This keeps them from going into log set
controls. If sediment trap is not installed or is
installed wrong, log set may not run properly.
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 detection fluid
to all joints. Bubbles forming show
a leak. Correct all leaks at once.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect log set and its individual
equipment shutoff valve from gas supply
piping system.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system by either
using compressed air or opening main gas
valve located on or near gas meter.
4. Check all joints of gas supply piping system.
Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect log set 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 5).
2. Pressurize supply piping system by either
using compressed air or opening main gas
valve located on or near gas meter.
901268-01H
INSTALLATION
Continued
3. Check all joints from gas meter to equip-
ment shutoff valve (see Figure 5). Apply
a noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
HEARTH PAN INSTALLATION
If using propane/LP gas, see Propane/LP
Gas Conversion on page 8, before installing
hearth pan.
1. Place burner pan assembly in center of
fireplace floor. Make sure front of pan
faces forward.
2. Thread gas supply fitting to fireplace gas
supply pipe. Adjust to most convenient
position.
3. Install gas connector tube to gas supply
adapter. Carefully shape tube and attach
to gas inlet fitting (see Figure 6). Be care-
ful not to cause kinks in tube.
4. Test for leaks following instructions under
Testing Burner for Leaks, page 9.
5. Retighten and adjust location of gas control
as necessary. Gas control should be level,
with control rod to the front.
Figure 6 - Installing Inlet Fitting and Gas
Connector Tube (Valve Cover Removed
www.desatech.com
Figure 5 - Checking Gas Joints
for Clarity)
Equipment
Shutoff Valve
Gas Meter
Gas Control
Valve
Regulator
Gas Connector
Tube
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