Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 82

Installation sequence
Power supply
(cont.)
Adapt the cross-section of common power cable to the connected load of the
instantaneous heating water heater and the compressor. The connected load of
the control unit does not have to be taken into consideration.
A Common heat pump power cable
Recommended power cable: 3 x
2
10 mm
B Control unit, no power-OFF per-
missible
Recommended power cable: 3 x
2
1.5 mm
Control unit power supply
A Terminals in the control panel
82
C Instantaneous heating water hea-
ter
Recommended power cable: 7 x
2
2.5 mm (see also page 83)
D Compressor
Recommended power cable: 3 x 4
2
mm
E Sub-distribution (near the Com-
pact Energy Tower)
Note
This supply must never be blocked.
Max. protection 16 A.