69-0624—2
6
TABLE 7—MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES
WHEN USING Q309A THERMOCOUPLE.
Maximum Leadwire Length x 2 (Wires)
Thermocouple Length
Awg No. 14
Awg No. 16
Awg No. 18
Inches
Meters
Inches
Meters
Inches
Meters
Inches
Meters
12
0.3
47
1.2
30
0.8
18
0.5
18
0.5
41
1.0
26
0.7
16
0.4
24
0.6
35
0.9
22
0.6
14
0.4
30
0.8
29
0.8
18
0.5
11
0.3
36
0.9
23
0.6
15
0.4
9
0.2
40
1.0
19
0.5
12
0.3
7
0.2
48
1.2
11
0.3
7
0.2
60
1.5
DO NOT USE.
Start-up and Checkout
WARNING
FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
1. Do not force the gas control knob. Use only your
hand to push down the reset button or turn the
gas control knob. Never use any tools.
2. If the gas control knob or reset button will not
operate by hand, or if the reset button stays
depressed after it is released, to replace the gas
control call a qualified service technician.
GAS CONTROL KNOB SETTINGS
The gas control knob has three settings:
OFF: Prevents pilot and main burner gas flow.
PILOT: Permits pilot gas flow only. Gas control knob
must be held depressed or the thermocouple must be
heated sufficiently to hold the safety control valve
open.
ON: Permits main burner and pilot gas flow. Gas control
and thermostat control main burner gas flow.
NOTE: Gas controls are shipped with the gas control knob in
the ON position.
PERFORM GAS LEAK TEST
WARNING
FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
Check for gas leaks with rich soap and water
solution any time work is done on a gas control.
GAS LEAK TEST
1. Paint all pipe connections upstream of the gas control
with a rich soap and water solution. Bubbles indicate a gas
leak.
2. If a gas leak is detected, tighten the pipe connection.
CAUTION
Stand clear while lighting main burner to prevent
injury caused from hidden gas leaks that could
cause flashback in the appliance vestibule.
3. Light the main burner.
4. With the main burner in operation, paint all pipe joints
(including adapters) and gas control inlet and outlet with rich
soap and water solution.
5. If another gas leak is detected, tighten adapter screws,
joints, and pipe connections.
6. If gas leak cannot be stopped, turn the gas control knob
clockwise to off.
7. Replace the leaking part.
8. Perform the gas leak test.
LIGHT THE PILOT BURNER FLAME
1. Turn the gas control knob clockwise to OFF.
Wait five minutes to dissipate any unburned gas. Sniff
around the appliance near the floor. Do not relight the pilot
flame if you smell gas.
2. Turn the gas control knob counterclockwise to
PILOT. Push down and hold the gas control knob while
lighting the pilot flame.
3. Hold the gas control knob down about one minute,
then release.
• If the pilot flame goes out, turn the gas control knob
clockwise to OFF and repeat steps one through
three.
• If pilot flame remains lit, turn the gas control knob
counterclockwise to ON.
ADJUST THE PILOT BURNER FLAME
The pilot flame should envelop 3/8 to 1 /2 in. [10 to 13 mm]
of the thermocouple tip. Refer to Fig. 10. To adjust the pilot
flame:
1. Remove the pilot adjustment cover screw. Refer to
Fig. 5.
2. Turn the inner adjustment screw clockwise , to
decrease or counterclockwise to increase the pilot
flame.
3. Be sure to replace the cover screw after adjustment
and tighten firmly.
