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Service Call 0844 736 9138, Technical Help (Chargeable) Call 0906 802 0253
19.4 Hydraulic block
11
9
10
8
6
24
17
13
5
4
2
1
18
19
21
22
14
20
23
3
25
27
26
30
7
28
29
15
16
31
32
33
34
18mm
21mm
Key
1 Three-way valve motor
2 Three-way valve electrical plug
3 Three-way valve electrical plug retaining clip
4 Low water pressure sensor connector
5 Low water pressure sensor
6 Low water pressure sensor retaining clip
7 Heating ow pipe retaining clip
8 Heating ow pipe
9 Heating ow pipe lter assembly
10 Heating ow pipe retaining clip
11 Gas pipe
12 Flow sensor electrical plug
13 Flow sensor
14 Heating return pipe
15 Expansion vessel pipe
16 Plate-to-plate heat exchanger
17 Automatic air vent
18 Expansion vessel pipe clip
19 Automatic air vent retaining clip
20 Pump head retaining screws
21 Pump housing
22 Pump head connector
23 Plate-to-plate heat exchanger retaining screws
24 Safety Discharge Valve
25 Bypass Valve
26 Bypass Valve retaining nut - rear
27 Bypass Valve retaining nut - front
28 Impeller housing
29 Safety discharge valve plastic housing
30 Hydroblock assembly clip
31 3 way valve housing
32 O-ring
33 3 way valve shaft group
34 3 way valve upper plastic block
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