Viessmann Vitocal 300-G Installation And Service Instructions Manual page 77

Electrical connections
Plug sYS
Terminals Function
212.2 Heating circuit pump for
heating circuit without mixer
A1
(A1)
212.3 DHW circulation pump
(cont.)
Explanation
■ This pump is installed in addition to the
secondary pump if a heating water buf-
fer cylinder is connected.
■ Connect temperature limiter as maxi-
mum temperature limiter for underfloor
heating circuit (if installed) in series
(see the following chapter)
Connection values
■ Output: 100 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Connect on site.
Connection values
■ Output: 50 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Connect on site.
Installation sequence
77