Immersion Thermostat; Contact Thermostat; Extension For Heating Circuit Control Unit For Heating Circuit With Mixer M2/Hc2 Or For; Integrating The External Heat Generator - Viessmann VITOCAL Series Technical Manual

Control unit accessories

Immersion thermostat

Part no. 7151728
May be used as a maximum temperature limiter for underfloor heat-
ing systems.
The temperature limiter is integrated into the heating flow. If the flow
temperature is too high, the temperature limiter switches off the
heating circuit pump.
0
7 2
1 3
9

Contact thermostat

Part no. 7151729
May be used as a maximum temperature limiter for underfloor heat-
ing systems (only in conjunction with metal pipes).
The temperature limiter is integrated into the heating flow. If the flow
temperature is too high, the temperature limiter switches off the
heating circuit pump.
0
7 2
1 3
9.10 Extension for heating circuit control unit for heating circuit with mixer M2/HC2 or
for integrating the external heat generator
Note
The mixer is linked into the flow, downstream of the heating water
buffer cylinder (if installed) and controlled by the heat pump control
unit.
VIESMANN
142
(cont.)
Specification
Cable length
Setting range
Switching differential
Breaking capacity
Setting scale
Stainless steel sensor well
(male thread)
DIN reg. no.
Specification
Lead length
Setting range
Switching differential
Breaking capacity
Setting scale
DIN reg. no.
4.2 m, fully wired
30 to 80 °C
Max. 11 K
6(1.5) A, 250 V~
Inside the enclosure
R ½ x 200 mm
DIN TR 1168
4.2 m, fully wired
30 to 80 °C
Max. 14 K
6(1.5) A, 250 V~
Inside the casing
DIN TR 1168
VITOCAL