J99x Series BASO® Replacement Pilot Burners
© 2017 BASO Gas Products
2
Part No. BASO-INS-J99xREPLACEMENT, Rev. B
www.baso.com
After Installation
After installation, carefully make the following
observations and tests:
1.
Ensure that the main burner flames do not
impinge on any part of the pilot burner.
2.
Ensure that the pilot flame produces a
satisfactory millivoltage as described in the
Thermocouple Output Test
section.
3.
Ensure that the pilot burner ignites the main
burner under all pilot burner conditions that
maintain the safety shutoff device (BASO®
power unit) in the On position. (See the
Safety
Turn Down Test
section.)
4.
Ensure that the pilot burner is not smothered 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
Thermocouple Output Test
When the pilot is applied properly, the thermocouple
produces an open circuit millivoltage. Normal
operating voltages must be obtained to provide
trouble-free performance.
Using the Y99AB Test Kit (purchasable from a
BASO Gas Products authorized distributor), attach
the proper junction terminal of the millivolt meter to
the thermocouple lead and measure the open circuit
voltage. Allow at least five minutes for each meter
reading. See Table 1 for specifications.
Note:
Refer to the
Y99AB-4 BASO
Test Kit
Application Note
for details.
Table 1: Thermocouple Output
Thermocouple Lead
Turn
Down
Open
Circuit
Range
Minimum
Fixed
Load
Series
Number
Code
Number
K14
80
4 mV
20-28 mV
8 mV
K15
88D, 88F,
88J, 88E,
88H
4 mV
20-28 mV
8 mV
K16
87D, 87F,
87K, J87D,
K16K,
L87D,
N87D,
K16S,
JC87F,
L87F
4 mV
25-35 mV
8 mV
K19
K19
4 mV
25-35 mV
8 mV
Safety Turn Down Test
Observe the pilot flame under the various test conditions
and ensure it appears stable at all times. Use a millivolt
meter to determine the stability of the pilot flame. During
the observation, or turn down test, position the doors of
the appliance in their normal operating position. Pilot
operation can be affected by draft conditions, appliance
design, and recirculation of combustion products.
!
WARNING: Risk of Fire or Explosion.
Avoid accumulation of unburned gas and resulting
personal injury or property damage by making sure the
main burner lights under all pilot burner flame
conditions that maintain the BASO power unit in the
On position. Perform the following procedure to assure
the location of the pilot with respect to the main burner
is acceptable.
