Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 100

Installation sequence
Electrical connections
B
aVG
3
2
A
aVG
1
A Connection on controller and sensor
PCB
B External extension H1
C Thermostat for swimming pool tem-
perature control (zero volt contact,
230 V~; 0.1 A; accessory)
D Junction box (on site)
E Fuses and contactor for circulation
pump for swimming pool heating
(accessory)
Required parameters
Parameter Ó setting
"System definition"
■ "External extension 7010" Ó "1"
■ "Swimming pool 7008" Ó "1"
Cascade control via KM BUS
Make connections to "External extension
H1" only according to the following dia-
gram.
100
(cont.)
fÖ
L L1
? ?
N N
aVD
C
3
2
1
gÖ
N
?
L
L2
?
L1 L3
D
M
3~
F E
F Circulation pump for swimming pool
water heating (accessory)
G Three-way diverter valve "swim-
ming pool" (zero volt: Heating the
heating water buffer cylinder)