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TEMPERATURE
MODULATING
AIR CIRCULATION
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FALLING
COOLING
HEATING
Figure 4-3 Controller Operation - - Perishable Mode
FALLING
TEMPERATURE
COOLING
AIR
CIRCULATION
ONLY
Figure 4-4 Controller Operation - - Frozen Mode
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+2.5
C (4.5
F)
_
_
+1.5
C (2.7
F)
_
_
+1
C (1.8
F)
_
_
+0.5
C (0.9
F)
_
_
+.20
C
_
SET POINT
- -0.20
C
_
- - 0.5
C (0.9
F)
_
_
- -1
C (1.8
F)
_
_
- -1.5
C (2.7
F)
_
_
+1.5
C (2.7
F)
_
_
+1
C (1.8
F)
_
_
+0.5
C (0.9
F)
_
_
+.20
C
_
SET POINT
- -0.20
C
_
- - 0.5
C (0.9
F)
_
_
- -1
C (1.8
F)
_
_
- -1.5
C (2.7
F)
_
_
4-5
RISING
TEMPERATURE
MODULATING
COOLING
AIR CIRCULATION
HEATING
RISING
TEMPERATURE
COOLING
AIR
CIRCULATION
ONLY
T-296
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