Viessmann Vitocal 252-A Series - Page 18

18
Indoor unit with 1 integrated heating/cooling circuit
A B C D E F
B
C
D
E
F
A
B
C
D
E
47
597
600
687
697
1397
1473
1556
1666
1748
1831
1900
1946
1951
86
163
245
355
438
520
A
F
Fig. 2
A
Secondary circuit flow (heating/cooling circuit 1/
external buffer cylinder), connection Cu 28 x
1.0 mm
B
Cold water, connection Cu 22 x 1.0 mm
C
Heating water from outdoor unit, connection Cu 28
x 1.0 mm
D
Heating water to outdoor unit, connection Cu 28 x
1.0 mm
E
DHW, connection Cu 22 x 1.0 mm
F
Secondary circuit return (heating/cooling circuit 1/
external buffer cylinder), connection Cu 28 x
1.0 mm
Preparing for installation
Requirements for on-site connections
6222080
Installation