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6. With the heat side tuned, manually set the COOL parameter or
Proportional Band Coefficient for Cooling. If the cooling output is
less powerful than the heating output, the Cooling Proportional
Band must be narrower than the Heating Proportional Band; the
COOL parameter would be less than “1”. If the cooling output is
more powerful than the heating output, the Cooling Proportional
Band must be wider than the Heating Proportional Band; the COOL
parameter would be more than “1”. See the programming section
for more details.
7. Finally, you can add a Deadband/Overlap. The programmed
Deadband/Overlap parameter can be within -50% to +50% of the
Heating Proportional band. To establish a Deadband, parameter
“db” is set somewhere between 0% and 50% of the Heating
Proportional band. To establish an Overlap, “db” is set somewhere
between -50% and 0% of the Heating Proportional Band.
8. Manually fine-tune the parameters “COOL” and “db” until just the
right amount of cooling is achieved. Refer to the programming sec-
tion for more details on these parameters.
Heating Side
Cooling SIde
Heating Proportional Band
Cooling Proportional Band
[P/2]
[P/2 COOL]
I
I (same as for heating)
D
D (same as for heating)
