Si33-105
Refrigerant System Diagram
Function R407C PLUS Series Heat Recovery System
35
No.
Name
Code
Function
Remarks
1
Outside air thermistor
R1T
Detects outside temperature and uses it as a function in
determining defrost IN conditions during heating operation.
2
Heat exchanger thermistor 1
R21T
Uses inlet temperature of each heat exchanger as a function
(together with outside temperature data) in determining defrost IN
conditions during heating operation.
3
Heat exchanger thermistor 2
R22T
4
Heat exchanger thermistor 3
R23T
5
Discharge pipe thermistor 1
R31T
Detects discharge pipe temperature of inverter compressor and
use it for compressor discharge pipe temperature protection.
6
Discharge pipe thermistor 2
R32T
Detects discharge pipe temperature of constant-speed
compressor 1 and use it for compressor discharge pipe
temperature protection.
7
Discharge pipe thermistor 3
R33T
Detects discharge pipe temperature of constant-speed
compressor 2 and use it for compressor discharge pipe
temperature protection.
8
Suction thermistor 1 (Hx. 1)
R41T
Detects outlet temperatures of heat exchangers and uses it in
constant superheated degree (SH) control (electronic expansion
valve control)
9
Suction thermistor 2 (Hx. 2)
R42T
10
Suction thermistor 3 (Hx. 3)
R43T
11
Suction pipe thermistor
R6T
Detect accumulator outlet temperature and protect compressor.
12
Liquid pipe thermistor
R8T
Detect liquid receiver outlet temperature and judge the Y5S open/
close under liquid pressure control.
Summary of Contents for R407C PLUS
Page 1: ...System R407C PLUS Series Heat Recovery System Si33 105 Service Manual ...
Page 11: ...Introduction Si33 105 x ...
Page 41: ...Specifications Si33 105 30 Specifications R407C PLUS Series Heat Recovery System ...
Page 147: ...Test Operation Si33 105 136 Test Operation R407C PLUS Series Heat Recovery System ...
Page 263: ...Si33 105 iv Index ...