BASO G292 Series Dual Pilot Gas Valve - Manual (Page 3)

G292 Series BASO Dual Pilot Gas Valve Installation Instructions 3
6. Set the thermostat for the second main burner to
the highest setting. It should ignite from the pilot
burner.
7. Set the thermostat for each burner to the lowest
setting. Both main burners should extinguish.
8. Extinguish the pilot burners by closing the main
upstream manual shutoff valve. Verify that the
valve drops out within 90 seconds.
9. Relight each pilot burner.
10. Check the millivoltage (mV) output of the
thermocouple and the milliampere (mA) dropout
range of each BASO power unit to ensure that
they meet the values listed in Table 1 and Table 2.
Step-by-step procedures for these checks are
included with the Y99AB-4 BASO Test Kit
Application Note.
11. Observe at least three complete operating cycles
to make sure that all components are functioning
properly.
12. Reset the thermostat to the desired setting before
leaving the installation.
Table 1: Thermocouple Output
Thermocouple mV Range
Lead
Type Turn
Down Normal
Not Less
Than
K15 4 mV 20-28 15
K16 4 mV 25-35 17
K19 4 mV 25-35 17
Table 2: Dropout Range
mA Range of Power Unit Assembly
Low High
100 300
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 2).
• 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 2: Flame Position
Repairs and Replacement
!
WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff
valve before installing or servicing the G292. Failure
to shut off the gas supply can result in the release of
gas during installation or servicing, which can lead to
an explosion or fire, and may result in severe
personal injury or death.
Field repairs must not be made to the G292 valve. If
the thermocouple meets the output listed in Table 1
and the valve does not function, replace the entire
valve. Any attempt to repair this assembly voids the
manufacturer’s warranty. For a replacement valve,
contact the original equipment manufacturer or the
nearest BASO Gas Products distributor.