Glow-worm Easicom 28 Installation And Servicing

0020145065_01 - 09/12 - Glow-worm
18.4 Hydraulic block
11
16
9
10
8
7
6
24
17
13
12
5
4
2
1
18
19
21
22
14
15
20
23
3
25
27
26
30
30
28
29
Key
1 Three-wayvalve
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
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
27 Bypass Valve retaining nut
28 Impeller housing
29 Safety discharge valve plastic housing
30 Retaining clip
18.4.1 Pump (head only)
• Drain the boiler heating circuit as described in the appropriate
chapter "Draining".
• Disconnect the electrical plug (22) from the main board.
• Remove the four cap head screws (20).
• Carefully remove the pump head (21) together with cable.
Do not strain cable.
• Reconnect wiring to new pump head and t cover.
• Fit the new pump head by repeating the operations in reverse.
MAINTENANCE
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Glow-worm Easicom 28 Specifications

General

Type	Combi Boiler
Output	28 kW
Energy Efficiency Rating	A
Mounting	Wall Mounted
Central Heating Output	24 kW
Domestic Hot Water Output	28 kW
Fuel Type	Natural Gas
Central Heating Max Pressure	3 bar