Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 25

Connecting pumps
Pumps in the underfloor heating circuit
sÖ
M
1~
B
A
Fig. 17
Control unit
sÖ
Primary heating circuit pump
A
Temperature limiter
B
Secondary heating circuit pump
C
(for system separation)
Temperature limiter for maximum temperature limiter (accessories)
C
B
M
A
1~
Fig. 18
A Heating circuit pump
Temperature controller/temperature limiter
B
Plug of the temperature controller/temperature
C sÖ
limiter to the control unit
(cont.)
M
1~
C
The common power consumption of both pumps must
not exceed 2 A.
Electromechanical temperature limiter according to the
liquid expansion principle
Switches the heating circuit pump off when the set
■
value has been exceeded.
The flow temperature is only slowly reduced in this
■
situation, i.e. it may be several hours before the sys-
tem restarts again automatically.
■
Connection: Screw terminals for 1.5 mm
Specification
Setting range
Switching differential
Immersion thermostat
■
Contact thermostat
■
Electrical connections
2
30 to 80 °C
Max. 11 K
Max. 14 K
25