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SiUS12-928_A
Control Specification
Function and Control
52
3.10 Defrost Control
Outline
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat
exchanger temperature must be more than a certain value to finish.
Detail
Conditions for Starting Defrost
The starting conditions are determined with the outdoor temperature and the outdoor heat
exchanger temperature.
The system is in heating operation.
The compressor operates for 6 minutes.
More than
minutes of accumulated time pass since the start of the operation, or ending the
previous defrosting.
Conditions for Canceling Defrost
The target heat exchanger canceling condition temperature is selected in the range of 4 ~ 12°C (39
~ 54°F) according to the outdoor temperature.
The defrost operation operates120 seconds after the start. (A
→
B)
Then the defrost operation stops at the following conditions.
1. When the heat exchanger temperature reaches the target heat exchanger temperature. (B
→
C)
2. When 650 seconds have passed after the start even if the heat exchanger temperature does not
reach the target heat exchanger temperature. (C)
18 class
24/32 class
(minutes)
43
38
(Hz)
54
39
(Hz)
82
62
(seconds)
120
60
(pulse)
450
350
(pulse)
450
400
(pulse)
140
160
Fre
qu
ency
Compressor
Fo
u
r-
w
ay
v
al
v
e
Fan
Electronic expansion
v
al
v
e opening
(operating room)
Electronic expansion
v
al
v
e opening
(stop room)
O
N
A
B
C
OFF
O
N
OFF
O
N
OFF
0 Hz
Hz
5 sec.
450 p
u
lse
0 p
u
lse
PI control
5 sec.
60 sec.
650 sec.
120 sec.
Initial opening
Initial opening
(R12296)
Hz
sec.
p
u
lse
p
u
lse
p
u
lse
Содержание SUPER MULTI NX G Series
Страница 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Страница 7: ...SiUS12 928_A Table of Contents vi...
Страница 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Страница 11: ...SiUS12 928_A List of Functions 2...
Страница 16: ...SiUS12 928_A 7 Specifications Part 2 Specifications 1 Specifications 9 1 1 Indoor Unit 9 1 2 Outdoor Unit 11...
Страница 17: ...SiUS12 928_A Specifications 8...
Страница 23: ...SiUS12 928_A Specifications Specifications 14...
Страница 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Страница 35: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 26...
Страница 37: ...SiUS12 928_A Function and Control 28...
Страница 69: ...SiUS12 928_A Control Specification Function and Control 60...
Страница 71: ...SiUS12 928_A Operation Manual 62...
Страница 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Страница 83: ...SiUS12 928_A Duct Free System Operation Manual 74 2 7 HOME LEAVE Operation is no longer displayed on the LCD...
Страница 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Страница 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Страница 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Страница 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Страница 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Страница 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Страница 99: ...SiUS12 928_A Service Diagnosis 90...
Страница 169: ...SiUS12 928_A Removal Procedure 160...
Страница 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Страница 235: ...SiUS12 928_A Appendix 226...
Страница 243: ...SiUS12 928_A Wiring Diagrams Appendix 234...