Viessmann Type B2HA Operations Instructions download pdf (Page 23)

A buffer relay must be fitted if the current

flowing to the connected working parts

(e.g. circulation pumps) is higher than

the safety level of the relevant acces-

sory.

Accessories Internal fuse

protection

Extension kit for heat-

ing circuit with mixer

2 A

Extension AM1 4 A

Extension EA1 2 A

Solar control module,

type SM1

2 A

Power supply

fÖ

Danger

Incorrect core allocation can

result in serious injury and dam-

age to the appliance.

Take care not to interchange

wires "L1" and "N".

■ Remove the existing test wires from

plug

fÖ

■ Max. fuse rating 16 A.

■ Connect the mains power supply to

plug

fÖ

Installation sequence

Electrical connections

(cont.)

5772 909 GB

Installation

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 187 188

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Viessmann Type B2HA Operations Instructions Page 23