Viessmann Vitocal 222-S Installation And Service Instructions For Contractors page 45

Electrical connection
Swimming pool heating
Note
■ Swimming pool heating is controlled via EA1 exten-
sion with KM-BUS.
Make connections to EA1 extension only in accord-
■
ance with Fig. 41.
A filter circuit pump cannot be controlled via the heat
■
pump control unit.
[{A [{S
DE DE
1 2 1 2 3 4
K H
Fig. 41
EA1 extension
A
Power supply 1/N/PE 230 V/50 Hz
B
Junction box (on site)
C
Fuses and contactor for circulation pump for swim-
D
ming pool heating (accessories)
Jumper
E
3-way diverter valve for "swimming pool" (zero
F
volt: Charging the heating water buffer cylinder)
(cont.)
A
[{D [{{]
DE 0-10V
5 6 + -
f-]
A
E
N L1
B
L1 N
C
D
M
1~
F G
Circulation pump for swimming pool heating
G
(accessories)
Temperature controller for regulating swimming
H
pool temperature (floating contact: 230 V~, 0.1 A,
accessories)
KM-BUS connection to the controller and sensor
K
PCB
Installation sequence
45