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SiUS281811EA
Outline of Control (Indoor Unit)
Part 4 Functions and Control
125
Note(s)
Suction air thermistor (
∗
1) is used for temperatures from 27°C (81°F) to 30°C (86°F) (E
→
F).
Assuming suction temperature has changed from 30°C (86°F) to 18°C (64°F) (F
→
A):
Suction air thermistor (
∗
1) is used for temperatures from 30
°
C (86
°
F) to 25
°
C (77
°
F) (F
→
D).
Remote controller thermistor is used for temperatures from 25
°
C (77
°
F) to 21
°
C (70
°
F) (D
→
B).
Suction air thermistor (
∗
1) is used for temperatures from 21
°
C (70
°
F) to 18
°
C (64
°
F) (B
→
A).
∗
1. For FTQ: Remote sensor (Optional accessory)
Heating
When heating, the hot air rises to the top of the room, resulting in the temperature being lower near
the floor where the occupants are. When controlling by suction air thermistor (
∗
1) only, the indoor
unit may therefore be turned off by the thermostat before the lower part of the room reaches the set
temperature. The temperature can be controlled so the lower part of the room where the occupants
are does not become cold by widening the range in which remote controller thermistor can be used
so that suction temperature is higher than the set temperature.
Assuming the set temperature in the figure above is 24°C (75°F), and the suction
temperature has changed from 18°C (64°F) to 28°C (82°F) (A
→
D):
(This example also assumes there are several other air conditioners, and the suction temperature
changes even when the thermostat sensor is off.)
Suction air thermistor (
∗
1) is used for temperatures from 18°C (64°F) to 25°C (77°F) (A
→
C).
Remote controller thermistor is used for temperatures from 25°C (77°F) to 28°C (82°F) (C
→
D).
Assuming suction temperature has changed from 28°C (82°F) to 18°C (64°F) (D
→
A):
Remote controller thermistor is used for temperatures from 28°C (82°F) to 23°C (73°F) (D
→
B).
TH1 = Ts – 1
A B
C
D
TH1 = Ts + 1
d
31°C
TH1 = Ts + 12
d
33°C
TH1 = Ts + 10
d
31°C
Range in which remote controller
thermistor can be used
Range in which
suction air thermistor
can be used
Differential
Set temperature
(Ts)
32
30
28
26
24
22
20
18
(°C)
(°F)
90
86
82
79
75
72
68
64
60 16
(°C)
12
14
16
18
20
22
24
26
28
30
32
34
Suction temperature (TH1)
(°F)
54
57
60
64
68
72
75
79
82
86
90
93
Summary of Contents for SkyAir RZR-TA Series
Page 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
Page 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Page 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Page 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Page 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Page 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...