Viessmann VITOLIGNO 300-P Service Instructions Manual page 124

Function description
Control functions
Soft start at plug gÖ
50
50
N L
A
K
close
1
B
gÖ Closing the mixers
A Contactor relay, part no. 7814 681
B Downstream heating circuit control-
ler, switching contact closed: Signal
for mixer "Close"
124
(cont.)
close close
2 n
■ For systems without heating water buf-
fer cylinder
■ The boiler water flow rate in the start-
up phase (e.g. after a weekend shut-
down) must be able to be reduced by
at least 50 %
■ Plug gÖ of the control unit is used as
a switching contact
■ Required code: "08:1"
■ Also affects the heating circuits of a
Vitotronic 200-H installed downstream