Viessmann Vitocal 350-A AWHI 351.A14, Installation And Service Instructions Manual

Page: 44 / 140

44
Subject to system version, one or more of the
4 red wires will need to be removed in accordance with
the following details.
Type AWHO 351.A
Fig. 40
E
Instantaneous heating water heater (accessories)
Red wires to be removed (see fig. 39 on page 43)
A X6.6
—
211.2
B
X6.2
—
211.3
C
X6.1
—
224.4
D
X6.4
—
211.4
Electrical connections for components
The following components are connected up in the
heat pump control unit (see page 46 onwards):
■ Secondary pump
■ Circulation pump for cylinder heating
■ Instantaneous heating water heater switching
Type AWHI 351.A
Fig. 41
E
Instantaneous heating water heater (accessories)
Red wires to be removed (see fig. 39 on page 43)
A X6.6
—
211.2
D X6.4
—
211.4
Electrical connections for components
The following components are connected up in the
heat pump control unit (see page 46 onwards):
■ Secondary pump
■ Circulation pump for cylinder heating
The following components are connected up in the
heat pump control panel (see separate installation
instructions and page 34 onwards):
■ Instantaneous heating water heater
Type AWHI 351.A
Fig. 42
E
Instantaneous heating water heater (accessories)
Red wires to be removed (see fig. 39 on page 43)
D X6.4
—
211.4
Electrical connections for components
The following components are connected up in the
heat pump control unit (see page 46 onwards):
■ Circulation pump for cylinder heating
The following components are connected up in the
heat pump control panel (see separate installation
instructions and page 34 onwards):
■ Secondary pump
Note
Electrical connection, on-site secondary pump, see
the following chapter.
■ Instantaneous heating water heater
Electrical connection of the on-site secondary
pump
M
1~
25
L
N
BK
GN/YE
BU
Fig. 43
Installation sequence
Heat pump control unit electrical connections
(cont.)
5692878
Installation