Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 16

Type awc-i-m, aw-o-m compact heat pump with electric drive, 230 v~
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Preparing for installation
Internal heat pump, type AWC-I-M
Connections
Diagram without front panels
A Cable entries
B DHW cylinder flow (see page 62)
16
(cont.)
C Condensate drain
D Heating water flow (see page 62)
E DHW cylinder return/heating
water return (see page 62)

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