Control Specification
SiEN04-306D
62
Function and Control
3.6
Freeze-up Protection Control
Outline
During cooling operation, the signals being sent from the indoor unit allow the operating
frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from
the indoor unit must be divided into the zones as the followings.
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from
operation start.
Control in Each Zone
3.7
Heating Peak-cut Control
Outline
Heat Pump Only
During heating operation, the signals being sent from the indoor unit allow the operating
frequency limitation and prevent abnormal high pressure. (The signal from the indoor unit must
be divided as follows.)
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 min from
operation start.
Control in Each Zone
The heat exchange intermediate temperature of indoor unit controls the following.
He
a
t exch
a
nger
thermi
s
tor temper
a
t
u
re
Ret
u
rn / Re
s
et zone
Up zone
Unch
a
nged zone
Drooping zone
S
top zone
A
B
C
D
E
(R1
3
79)
S
top zone
He
a
t exch
a
nger
thermi
s
tor
temper
a
t
u
re
Re
s
et zone
(R1
38
0)
Up zone
Unch
a
nged zone
Drooping zone
Summary of Contents for SiEN04-306D
Page 109: ...Instruction SiEN04 306D 100 System Configuration...
Page 199: ...Outdoor Unit SiEN04 306D 190 Removal Procedure...
Page 203: ...Others SiEN04 306D 194 Others...
Page 214: ...SiEN04 306D Wiring Diagrams Appendix 205 FTKD18 24 28BVMS...
Page 216: ...SiEN04 306D Wiring Diagrams Appendix 207 RKD18 24 28BVMS...
