8. Refrigerant cycle and hydraulic circuit
TCGB0075 rev.0 - 11/2012
96
8.1 RAS-(4-6)H(V)RNME-AF + RWH-(4.0-6.0)FS(V)NFE combination
No.
Part name
No.
Part name
No.
Part name
No.
Part name
No.
Part name
1
Outdoor unit compressor
13
Solenoid valve
25
Indoor unit manometer
37
W
ater outlet connection (1”)
49
IU compressor suction thermistor
2
Outdoor
unit
heat
exchanger
14
Ambient thermistor
26
W
ater pressure switch
38
DHW inlet connection (3/4”)
50
IU compressor discharge thermistor
3
Liquid tank
15
Evaporator pipe thermistor
27
Expansion
vessel
39
DHW outlet connection (3/4”)
51
Indoor unit compressor
4
Outdoor
unit
expansion
valve
16
OU compressor discharge thermistor
28
W
ater pump
40
T-branch
52
IU high pressure switch (protection)
5
Reversing valve
17
Refrigerant gas connection
29
W
ater outlet thermistor
41
W
ater pressure port (G 3/8”)
53
Check valve
6
Strainer
18
Refrigerant liquid connection
30
W
ater
flow
switch
42
W
ater inlet thermistor
54
Evaporating heating thermistor
7
Distributor
19
Gas pipe thermistor
31
3-way valve
43
W
ater strainer
55
Liquid pipe thermistor
8
R410A
check joint (1/2”)
20
Plate
heat
exchanger
(R410A-R134a)
32
Domestic hot water tank
44
Safety valve
56
Indoor
unit
expansion
valve
(1st
cycle)
9
OU high pressure switch (protection)
21
Indoor
unit
expansion
valve
(2nd
cycle)
33
DHWT
manometer
45
Plate
heat
exchanger
(R410A-H2O)
10
Gas pipe stop valve
22
Evaporating cooling thermistor
34
Flexible
water
pipe
(1”)
46
R134a check joint (7/16”)
11
Liquid pipe stop valve
23
Plate
heat
exchanger
(R134a-H2O)
35
Flexible
water
pipe
(3/4”)
47
Low pressure sensor (Ps)
12
Pressure switch (control)
24
Air purger
36
W
ater inlet connection (1”)
48
High pressure sensor (Pd)
Refrigerant 1:
Refrigerant 2:
Heating
refrigerant
flow
W
ater
flow
Field supplied piping line
Flare Nut connection
Brazed
connection
R-410A
R-134a