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Setup and Adjustments
Checkout
!
WARNING: Risk of Explosion or Fire.
Follow this or an equivalent checkout procedure
after installation. Before leaving the installation,
verify that the gas valve functions properly and that
the system has no gas leaks. Gas leaks can lead to
an explosion or fire, and may result in severe
personal injury or death.
Make sure all components are functioning properly by
performing the following test:
1. Open all upstream shutoff valves and test all joints
and connections for leaks with a soap solution.
2. Close the main upstream manual shutoff valve
and pilot adjust (applications with a pilot adjust
valve only) and wait at least five minutes for
unburned gas to escape from the appliance. Then
reopen the valves.
3. Push the reset button and light the pilot burner.
Continue to hold the reset button for 30 to
45 seconds or until the pilot remains burning when
the reset button is released.
4. Set the thermostat to the highest setting. The main
burner should now ignite from the pilot burner.
5. Extinguish the burner by closing the main
upstream manual shutoff valve. Verify that the
valve drops out within 90 seconds.
6. Relight the pilot burner.
7. Check the millivoltage (mV) output of the
thermocouple and the milliampere (mA) dropout
range of the BASO power unit to ensure that they
meet the values listed in Tables 2 and 3.
Step-by-step procedures for these checks are
included with the Y99AB-4 BASO Test Kit
Application Note.
8. Observe at least three complete operating cycles
to make sure that all components are functioning
properly.
9. Reset the thermostat to the desired setting before
leaving the installation.
Note: BASO recommends using only BASO
thermocouples that come from the original
equipment manufacturer to provide optimum
performance for your safety shutoff device.
©
2018 BASO Gas Products
Part No. BASO-INS-G92MODELREVB, Rev. -
G92 Model Rev. B Series BASOTROL® Automatic Pilot Gas Valve
Table 2: Thermocouple Output
Thermocouple
Lead
Turn
Type
Down
K15
4 mV
K16
4 mV
K17
4 mV
K19
4 mV
Table 3: Dropout Range
Series Number
All models except G92CAA-19
and G92CBA-10
G92CAA-19 and G92CBA-10
Pilot Gas Adjustment (Applications with a Pilot
Adjust Valve)
Models with an optional manual adjust pilot valve allow
for the adjustment of the pilot gas flame. To adjust the
pilot gas flame:
1. Turn the slotted screw to adjust desired flame
height.
2. Slowly turn counterclockwise to allow more pilot
flow and clockwise to lower the flame height.
Pilot Servicing
If pilot flame problems occur, check the following:
If the pilot flame burns yellow, it may be due to dirt
or lint covering the lower portion of the pilot
burner. Remove this using a soft brush or a
vacuum.
A flame approximately 1/2 in. (12.7 mm) high must
surround the thermocouple tip (see Figure 7).
Because this is an electrical connection, the
thermocouple lead connection to the BASO power
unit must be clean and free of grease.
Approximately
1/2 in. (12.7 mm)
Figure 7: Flame Position
mV Range
Not Less
Normal
Than
20-28
15
25-35
17
30-30
25
25-35
17
mA Range of
Power Unit
Assembly
Low
High
100
300
100
200
5
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