Elecro Engineering G2 Manuel D'installation page 11

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Secondary water flow right to left
Fig 10.
Pump
1" femal nipple
One way valve
Flowswitch
Thermostat
The control box can be attached to the Elecro Heat Exchanger as shown in
the diagram above using the fixings provided.
Electrical connection
Electrical connection:
Undo the lower cover screws and remove the electrical cover. All electri-
cal connections should be made into the relevant terminal block position,
according to the labelled positions.
Connection explanation:
Ensure that the Earth ring is securely connected using the Controller fix-ing
bolts and washers as shown fig:11 (this is then looped to terminals 3 & 6
internally).
Terminals 1, 2 & 3 connect to the mains incoming power supply as
indicated.
Terminals 4, 5 & 6 connect to the Grundfos pump supply cable as
indicated.
Terminals 7 & 8 connect to the flow switch.
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