IM-P402-93 AB Issue 7
25
8.4 Input level
Choose '0 - 6 V' for LP20 probe, or '4 - 20 mA' if required:-
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page 24
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8.5 Minimum level
This is the minimum water level in the gauge glass, not the low alarm level,
and defines the lowest point of reference for the system.
It is most unlikely that the level will be correct for a new system. Select
'Change' to allow manual control of the valve / pump as shown in the diagram.
Use the bottom blowdown valve to lower the water level in a boiler. Press
'Enter' when the water is at the required level:-
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