Daikin RMXS-L Series, Руководство по обслуживанию

Страница: 41 / 250

SiUS181305E Refrigerant Circuit
Refrigerant Circuit 32
1.2 Branch Provider (BP) Unit
No. in
diagram
Symbol Name Major Function
A EVU
Electronic expansion valve
(for operating room) Among EVA, EVB and EVC, the electronic expansion valve of operating room is called
EVU.
B EVT
Electronic expansion valve
(for non-operating room) Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called
EVT.
C EVH
Electronic expansion valve
(Bypass)
Adjusts the refrigerant circulating rate of the indoor unit during oil-return operation.
1
DGA
~ DGC
Thermistor (Gas pipe)
During cooling operation, carries out the indoor unit SH control and cooling gas pipe
isothermal control.
2
DLA
~ DLC
Thermistor (Liquid pipe) During heating operation, carries out the indoor unit SC control.
3 R1T
Thermistor
(Room temperature)
Detects room air temperature and instruct the capacity supply to the BP unit.
4 R2T
Thermistor
(Indoor heat exchanger) Detects heat exchanger temperature and carry out various protection functions and
controls of capacity.
5 R1T
Thermistor
(Room temperature)
Detects room air temperature and instruct the capacity supply to the BP unit.
6 R2T
Thermistor
(Indoor heat exchanger 1:
liquid pipe)
Detects heat exchanger temperature and carry out various protection functions and
controls of capacity.
7 R3T
Thermistor
(Indoor heat exchanger 2) Detects heat exchanger temperature and carry out various protection functions and
controls of capacity.
Filter
Filter
Filter
Filter
Filter
RA indoor unit
SA indoor unit
EV
A
EV
H
(C)
(A) (B)
EV
B
EV
C
(Q0403)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
To
outdoor
unit