Viessmann VITOCAL 200-G Installation And Service Instructions Manual page 44

Installation sequence
Electrical connections
Plug sYA
Terminals Function
211.4 ■ Circulation pump for cyl-
inder heating
■ Cylinder loading pump
■ 2-way shut-off valve
M
211.5 Switching cooling function
NC function (natural cool-
ing)
NC/AC
Plug sYS
Terminals Function
212.2 Heating circuit pump for
heating circuit without mixer
A1
(A1/HC1)
212.3 DHW circulation pump
44
(cont.)
Explanation
Connection values
■ Output: 130 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Circulation pump for cylinder heating con-
nected at the factory.
Connect cylinder loading pump and 2-
way shut-off valve on site.
Circuit on site
Connection values
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Explanation
■ This pump is connected in addition to
the secondary pump if a heating water
buffer cylinder is installed.
■ Connect the temperature limiter to re-
strict the maximum temperature for un-
derfloor heating systems (if installed) in
series (see the following chapter)
Connection values
■ Output: 100 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Connection values
■ Output: 50 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A