BASO H17 Series Automatic Pilot Valve User Manual
Page 3
H17 Series BASO Automatic Pilot Valve Installation Instructions 3
Setup and Adjustments
Checkout Procedure
!
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.
!
WARNING: Risk of Explosion or Fire.
Keep hands and clothing clear when manually
lighting the pilot. Gas flows to both main and pilot
burners when reset button is pressed. Excess gas
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.
Test all joints and connections for leaks with a
rich soap and water solution. If leaks occur, see
Step 7 in the Installation section.
2.
Close the manual shutoff valve and wait at least
5 minutes for unburned gas to escape from the
appliance, and then reopen the shutoff valve.
3.
Push the reset button of the BASO power unit
and light the pilot burner, or the main burner in
applications without a pilot burner. Continue to
hold the reset button for 30 to 45 seconds or until
the pilot or main burner remains burning when
the reset button is released.
4.
In applications that use a pilot burner along with a
thermostatically operated electric valve, set the
thermostat to the highest setting. The main
burner ignites from the pilot burner.
5.
Set the thermostat to the lowest setting. The main
burner will extinguish.
6.
Extinguish all flames by closing the manual
shutoff valve. Verify that the valve drops out
within 90 seconds.
7.
Relight the pilot burner or main burner in required
applications.
8.
Check the millivoltage output of the thermocouple
and milliampere dropout range at the BASO
power unit terminal to see that they meet the
values in Table 1 and Table 2. Step-by-step
procedures for these checks are included with the
Y99AB-4 BASO Test Kit Application Note.
9.
Observe at least three complete operating cycles
to make sure that all components are functioning
properly.
10. Return 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
Series Number
Low High
H17_A
100 300
H17_B
50 165
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.