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Eclipse Bi-Flame v1.8, Instruction Manual 826, 05/03
18
Valve Leak Sensing Device (VLSD) Interface
The Bi-Flame Valve Leak Sensing Device (VLSD or VDK) interface
provides a 120 VAC output which triggers the start of the test pe-
riod. An input is also provided which receives a 120 VAC signal
from the VLSD. If the signal is received within the selected test pe-
riod (40 or 110 seconds, see page 13), then the test has been suc-
cessfully completed. This option includes the required sequential
software to initiate the valve leak test on start-up and shutdown of
the burners.
When the limits close to the Bi-Flame, the 120 VAC output to the
VLSD is activated. If an optional remote display is connected, the fol-
lowing message will appear:
VALVE LEAKAGE
UNDER TEST XX (where X is the remaining seconds of the
test).
If the VLSD does not activate the VLSD 120 VAC input within the
test period, an alarm lockout will occur, and the following message
will appear on the optional remote display:
VALVE LEAK FAIL
LKOUT HHHH:MM:SS
If a valve leak occurs, the fan output on the Bi-Flame will be acti-
vated to purge the combustion chamber of gases.
Note:
If the VLSD input is not used, then it should be connected to
120 VAC.