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3
Technical Information
Component Parts
No.
A
DHW outlet pipe
B
Cold water inlet pipe
C
Water pipe (Space heating return connection (to heat pump))
D
Water pipe (Space heating flow connection (from heat pump))
E
Water/Brine pipe (Ambient loop return connection (to heat pump))
F
Water/Brine pipe (Ambient loop flow connection (from heat pump))
1
Control and electrical box
2
Main remote controller
3
Plate heat exchanger (Refrigerant - Primary circuit)
4
Low-pressure sensor
5
3-way valve
6
Manual air vent
7
Drain cock (Primary circuit)
en
8
Manometer
9
Pressure relief valve (3 bar) (Primary circuit)
10
Automatic air vent
11
Expansion vessel (Primary circuit) (Local supply)
12
Flow sensor
13
Strainer valve
14
Water circulation pump 1 (Primary circuit)
15
Pump valve
16
DHW tank
17
Plate heat exchanger (Primary circuit (water) - Sanitary circuit (water))
18
Scale trap
19
Water circulation pump (Sanitary circuit)
20
Immersion heater
21
Magnetic filter (Ambient loop) (Local supply)
22
Temperature and pressure relief valve
23
Drain cock (DHW tank)
24
Pressure relief valve (10 bar) (Ambient loop) (Local supply)
25
Flow water temp. thermistor (THW1)
26
Return water temp. thermistor (THW2)
27
DHW tank water temp. thermistor (THW5A)
28
DHW tank water temp. thermistor (THW5B)
29
Refrigerant liquid temp. thermistor (TH2)
30
Module
31
Drain pipe (Local supply)
32
Expansion vessel (Sanitary circuit (water)) *1
33
Isolating valve (Local supply)
34
Magnetic filter (Local supply) (Recommended)
35
PICV (Pressure Independent Control Valve) (Local supply)
36
Compressor
37
High-pressure sensor
38
Linear expansion valve
39
Charge plug
40
Liquid temp. thermistor (TH3)
41
Discharge temp. thermistor (TH4)
42
Ambient temp. thermistor (TH7)
43
Heat sink temp. thermistor (TH8)
44
Plate heat exchanger (Water/Brine - Refrigerant)
45
Drain cock (Ambient loop)
46
Inlet control group *1
47
Flow switch
48
Water inlet temperature (Ambient loop) thermistor (TH32)
49
Water outlet temperature (Ambient loop) thermistor (TH34)
50
Muffler
51
Drain cock (Sanitary circuit)
52
Filling loop (Ball valves, check valves and flexible hose) *1
53
High-pressure switch
54
Compressor surface temperature (TH33)
*1 Supplied with UK model ONLY.
Please refer to PAC-WK02UK-E Installation Manual for more
information on accessories.
Note: For parts not shown on this page, please refer to 'Circuit
diagram <Figure 3.2>'.
9
Part name
<Table 3.2>
<Overall>
F
E
9
10
D
C
8
22
16
20
5
30
Note:
For installation, make sure to install a suitably sized pri-
mary-side expansion vessel. (See figure 3.2 and 4.3.2 for
further guidance)
<Module>
37
53
50
4
38
12
7
3
13
14
15
<Figure 3.1>
A
B
1
19
6
18
23
17
51
36
47
44
45
39
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