Carrier 69NT40-489-100 Series, Operation And Service Manual

Page: 73 / 178

T-305
49
SET POINT
FALLING
TEMPERATURE
RISING
TEMPERATURE
--1.5
_
C (2.7
_
F)
--1
_
C (1.8
_
F)
--0.5
_
C (0.9
_
F)
--0.20
_
C
+.20
_
C
+1.5
_
C (2.7
_
F)
+1
_
C (1.8
_
F)
+0.5
_
C (0.9
_
F)
HEATING HEATING
MODULATING
COOLING
AIR CIRCULATION ONLY
AIR CIRCULATION
MODULATING
COOLING
+2.5
_
C (4.5
_
F)
Figure 16. Controller Operation -- Perishable Mode
AIR
CIRCULATION
ONLY
SET POINT
FALLING
TEMPERATURE
RISING
TEMPERATURE
--1.5
_
C (2.7
_
F)
--1
_
C (1.8
_
F)
--0.5
_
C (0.9
_
F)
--0.20
_
C
+.20
_
C
+1.5
_
C (2.7
_
F)
+1
_
C (1.8
_
F)
+0.5
_
C (0.9
_
F)
COOLING
AIR
CIRCULATION
ONLY
COOLING
Figure 17. Controller Operation -- Frozen Mode