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Safety
Turn Down Test
Turn Down Test
with the Use of
the Y99AB Test
Kit
"B" valve
Table 1: Thermocouple Output Table
Thermocouple Lead
Series
Code Number
Number
K14
80
K15
88D, 88F, 88J, 88E,
88H
K16
87D, 87F, 87K, J87D,
K16K, L87D, N87D,
K16S, JC87F, L87F
K19
K19
!
WARNING:
To perform the turn down test with the Y99AB Test Kit (purchasable
from your BASO Gas Products authorized wholesaler):
1.
Disconnect the thermocouple from the BASO safety shutoff device
and connect it to the test kit (see Figure 2). Hold the BASO in the
open position during this test using battery power from the test kit.
Power
Source
Manual
Pilot
Button
Manual
BASO
Main
Power Unit
Reset
Valve
Button
Pilot Burner
Gas Line
Figure 2: Using the Y99AB for the Turn Down Test
Turn Down
(mV)
4
4
4
4
Fire or Explosion Hazard. 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 in the On position. Follow the
procedure below to assure the location of the pilot
with respect to the main burner is acceptable.
Thermostat
20
MILLIVOLTS
PENN-BASO CONTROLS
44549-7
Actuator
Thermocouple
Lead
Pilot Burners/Thermocouples Technical Bulletin
Open Circuit
Minimum
Range (mV)
Fixed Load
Voltage (mV)
20 - 28
20 - 28
25 - 35
25 - 35
MILLIAMPS
500
0-500
D.C.
0-1000 0-50
MILLIVOLTS
ADJUST
MILLIAMPS
MILLIVOLTS
44549-8
Black
Red
y99ab
8
8
8
8
3
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