Setup Steps
21
Hot Water Valve Polarity
(setup step 20)
This step allows the hot water valve to set to
NORMALLY OPEN or NORMALLY CLOSED,
default = NORMALLY CLOSED.
Chilled Water Valve Polarity
(setup step 21)
This step allows the cold water valve to set
to NORMALLY OPEN or NORMALLY CLOSED,
default = NORMALLY CLOSED.
These steps configure the type of water valve(s) connected to the thermostat.
A normally closed valve allows no water flow when no power is applied to it. A
normally open valve allows water flow when no power is applied to it. Some 4 pipe
fancoils use a normally closed chilled water valve with a normally open hot water
valve. If you have a two pipe fancoil, the setting in step 15 for CHILLED WATER
VALVE will apply to the single valve in use.
Summary of Contents for EXPLORER Mini T2100
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