Form No. 43539500
July 2021 A
–
17
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*CHECK GAS OUTLET (MANIFOLD) PRESSURE:
1. Be sure that the valve is
in the “OFF” position before removing the pressure tap plug at the valve. With
the main burner operating, check the manifold pressure using a lower-pressure test set connected to the
1/8”
NPT Outlet Pressure Tap. Gas valves are combination valves with built-in appliance regulators.
These regulators are factory set and should not require adjustment. They should provide the correct
manifold pressure at the varying supply pressures noted in the Gas Pressure Table below.
DO NOT
EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE TABLE.
GAS PRESSURE TABLE
BROODER
MODEL
GAS TYPE
MANIFOLD
PRESSURE
SUPPLY PRESSURE
Minimum
Maximum
LPBL42-N5
Natural Gas
4
”
WC (10.0 mbar)
5
”
WC (12.4 mbar)
14”
WC (34.9 mbar)
LPBL42-L5
Propane Gas
10
”
WC (24.9 mbar) 11
”
WC (27.4 mbar)
14”
WC (34.9 mbar)
LPBL42-B5
Propane/Butane Mix Gas 10
”
WC (24.9 mbar) 11
”
WC (27.4 mbar)
14”
WC (34.9 mbar)
Minimum permissible gas supply pressure for the purpose of input adjustment.
*Note: The control no. 5 is equipped with gas valve #25M18-715 having a Flip-Flop convertible regulator
which is for conversion from LP to Nat Gas (or vice-versa) and cannot be field adjusted for outlet (manifold)
pressure. See separate instructions for converting from one gas to another.
REGULATOR LOCK-UP AND LEAKAGE:
After the leak testing and delivery pressure tests have proven satisfactory, the regulator lock-up and leakage
test may be performed. The lock-up pressure of the final stage regulator should be slightly higher than, but
not more than, 120%
of the set delivery pressure. For example, on a delivery pressure setting of 12” water
column, the maximum allowable lock-
up pressure is 14.4” wate
r column.
To perform the lock-up and leakage test, follow these steps:
1. With the LP tank valve fully open, shut off all appliance valves so there is no demand for gas.
2. A slight rise in pressure will occur under these conditions. This rise should be no more than 120% of the
delivery pressure. This is the lock up pressure.
NOTE
:
A quick rise in pressure above the allowable lock-
up point could indicate undersized piping, a worn seat disc or foreign material in the seating area. This
condition must be corrected before putting the system in service.
3. Continue the test for five minutes or more. If a creeping rise in pressure is noticed, the final stage
regulator seat is not closing off properly. The regulator must be replaced or repaired, and the system
retested, before putting the system in service.
