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SUPERIOR
Gas
Valve
3/8 in. Nipple
3/8 in. Union
3/8 in. Close Nipple
Figure 48: Gas Connection
f i r e - p a r t s . c o m
Main Gas
Shut-Off Valve
Figure 49: Millivolt Gas Valve—Lower Control Compartment
TEST ALL CONNECTIONS FOR GAS LEAKS
(FACTORY AND FIELD)
Turn on gas supply and test for gas leaks,
using a gas leak test solution (also referred to
as bubble leak solution).
Note: Using a soapy water solution is an
effective leak test solution but it is not
recommended, because the soap residue
that is left on the pipes/fittings can result in
corrosion over time.
A. Light the appliance (refer to the
lighting instructions label in the control
compartment or in the Care and Operation
Instructions manual).
B. Brush all joints and connections with the
gas leak test solution to check for leaks. If
bubbles are formed, or gas odor is detected,
turn the gas control knob (off/pilot/on) to
the "OFF" position. Either tighten or refasten
the leaking connection, then retest as
described above.
C. When the gas lines are tested and
leak free, be sure to rinse off the leak
testing solution.
• DIRECT-VENT GAS FIREPLACES (SDV35-N-2) • INSTALLATION INSTRUCTIONS
®
Optional Gas Flex Line Connector
3/8 in. NPT x 3/8 in.
1/2 x 3/8 in. Flare
Flare Fitting
Shut-Off Valve
3/8 in. Flex Tubing
1/2 x 3/8 in.
Reducer
3/8 in. Shut-Off Valve
Gas Valve
Standard Burner
ON/OFF Switch
Step 8. VERIFYING APPLIANCE
OPERATION
With gas line installed, run initial system
checkout before closing up the front of the
unit. Follow the pilot lighting instructions
provided in the Care and Operation
Instructions. For piezo igniter location, see
Figure 49.
Note: Lighting Instructions are also found on
the literature tag tied to the gas piping next
to the gas valve. To access the tag, open the
lower control compartment door (Figure 49)
by pushing in simultaneously the left and
right top corners of the door (the door is
hinged at the bottom). Remove the bottom
compartment door by sliding the hinge
pin, located at the door's left side, to the
right until it disengages from the left corner
post hole.
When first lighting the appliance, it will take
a few minutes for the line to purge itself of
air. Once purging is complete, the pilot and
burner will light and operate as indicated
in the instruction manual. Subsequent
lighting of the appliance will not require such
purging. Inspect the pilot flame (remove logs,
if necessary, handling carefully).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Gas
Stub
Piezo
Door Latch
Appliance Inspection
The pilot flame should be steady, not lifting
or floating. Flame should be blue in color
with traces of orange at the outer edge.
The top 3/8 in. (10 mm) at the pilot generator
(thermopile) and the top 1/8 in. minimum
(tip) of the quick drop out thermocouple
should be engulfed in the pilot flame.
The flame should project 1 in. (25 mm)
beyond the hood at all three ports (see
Figure 50). Replace logs if removed for pilot
inspection.
To light the burner; turn "ON" the remote wall
switch and rotate the gas valve control knob
counterclockwise to the "ON" position ("ON"
will be at the top side of the valve).
Hood
Igniter Rod
Thermocouple
Pilot
Nozzels
Thermopile
Figure 50: Millivolt Pilot
3/8 in.
(9 mm)
Min
27
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