BASO Pilot Burners - Manual (Page 2)

2 Pilot Burners/Thermocouples Technical Bulletin
When the pilot burner has been installed, carefully make the following
observations and tests:
1. Ensure the main burner flames do not impinge on any part of the pilot
burner.
2. Ensure the pilot burner will ignite the main burner under all pilot
burner conditions that maintain the safety shutoff device (BASO
®) in
the On position. (See the Safety Turn Down Test section.)
3. Ensure the pilot burner will not be smothered out or snuffed out:
• when the main burner is ignited from a cold start.
• when the main burner is ignited with the appliance at the
maximum temperature conditions of operation.
• with normal variation in air adjustments of the main burner.
• with rapid Off and On operation of the main burner with the
combustion chamber cold.
• with rapid Off and On operation of the main burner with the
combustion chamber hot.
• with continued operation of the main burner.
4. To ensure proper operation, the pilot flame must produce a
satisfactory millivoltage as described in the Thermocouple Output
Test section.
Note: When a pilot is to be applied to an appliance already in the field,
obtain the appliance manufacturer’s recommendations for the
correct pilot specification and location dimensions for the
particular model appliance.
When the pilot is applied properly, the thermocouple will produce an open
circuit millivoltage as shown in Table 1. Normal operating voltages, as
shown, must be obtained to give trouble-free performance. Perform the
following tests with the Y99AB Test Kit.
Attach the proper junction terminal of the millivoltmeter to the
thermocouple lead and measure the open circuit voltage. Allow at least
five minutes for each meter reading. For specifications, see Table 1.
After
Installation
Thermocouple
Output Test
Instructions for
Testing BASO
Pilot Burners with
K15, K16, K19, 80,
85, 87, and 88
Thermocouples