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Page 13.4
Adjusting the DeadbandAdjusting the Deadband
MULTI-STAGE OPERATION - Controls up to three Heat and two Cool
stages.
The 2nd Stage of heat or cool is
(A) The 1st Stage has been on for the time required (step #27,
page 13.6). It is adjustable from 0-60 minutes and the default
is two minutes.
(B) The temperature spread
than: the setpoint
turned on when:
from the setpoint is equal to or greater
plus the 1st stage deadband (step #24, next
page), plus the 2nd stage deadband (step #25, next page).
This 2nd stage deadband is adjustable from 0-10 degrees and
the default is two degrees.
The 3rd Stage of Heat is turned on when:
(A) The 2nd stage has been on for the time required (step #28,
page 13.6). It is adjustable from 0-60 minutes and the default
is two minutes.
(B) The temperature from the setpoint is equal to or greater
than: the setpoint plus the 1st stage deadband (step #24, next
page), plus the 2nd stage deadband (step #25, next page)
plus the 3rd stage deadband (step #26, next page). This 3rd
stage deadband is adjustable from 0-10 degrees and the
default is two degrees.
The above figure assumes the minimum on time for the prior stage has
been met to allow the next stage to turn on, once the deadbands have
been exceeded.
And
And
Heat
Setpoint
Cool
Setpoint
Deadband Deadband DeadbandDeadbandDeadband
db 1 db 1db 2 db 2db 3
(adj. 1-6 )(adj. 0-10 )(adj. 0-10 ) (adj. 0-10 )(adj. 1-6 )
1st Stage
turn on
2nd Stage
turn on
3rd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating
Cooling
TEMPERATURE
DECREASE INCREASE
13
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