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Control unit for weather-compensated operation
Accessories
Extension kit for heating circuit with
mixer
Part No. 7450 058
Mixer controller
The mixer controller is mounted directly
on the Viessmann DN 20 to 50 and Ø b"
to 1a" mixer.
The mixer controller is a motor-driven
control unit. The rotational direction is
reversible.
With connection plug for heating circuit
pump, flow temperature sensor (contact
sensor), mains power and BUS connec
tion.
Rated voltage:
230 V~
Rated frequency:
50 Hz
Rated current:
4 (2) A
Power consumption:
7.5 VA
Protection class:
Test class:
II
Degree of protection:
IP 32 to
EN 60529
Ambient temperature
H during operation:
20 to +40 °C
H during storage
and transport:
20 to +65 °C
Relay output for
heating circuit
pump sÖ:
4 (2) A 230 V~
Motor:
Torque:
3 Nm
Time of 90°í:
2 minutes
Dead zone of PI controller
with slope 1.4:
±1.2 K
Control unit for weather-compensated operation
Flow temperature sensor (contact sensor)
Mounted with clamping strap.
Cable length approx. 2 metres, with plug
ready for connection
Degree of protection:
IP 32
Ambient temperature
H during operation:
20 to +100 °C
H during storage
and transport:
20 to + 70 °C
Viessmann 2-wire BUS expansion
module,
Part No. 7144 549
for connecting a Vitotronic 050 heating
circuit control unit, a Vitocom 200, a Vito
com 300 or a Solartrol control unit.
Comprising one electronics board.
Accessories
Immersion limit thermostat
Max. temperature limiter for underfloor
heating systems, Part No. 7151 728
R b
The limit thermostat is mounted in the
flow of the heating system and switches
off the heating circuit pump when the
maximum permissible flow temperature is
exceeded. With connection cable (approx.
4 metres long) and Rast system plug.
Setting range:
30 to 100 °C
Operating differential:
max. 11 K
Breaking capacity:
6 (1.5) A 250 V~
Setting scale:
Inside case
Stainless steel
sensor well:
Øb" x 200 mm
long
DIN Reg. No.:
DIN TR 77798
or
Clip-on limit thermostat
Max. temperature limiter for underfloor
heating systems, Part No. 7151 729
(only in conjunction with metal pipes)
The limit thermostat is mounted in the
flow of the heating system and switches
off the heating circuit pump when the
maximum permissible flow temperature is
exceeded. With connection cable (approx.
4 metres long) and system plug.
Setting range:
30 to 110 °C
Operating differential:
max. 14 K
Breaking capacity:
6 (1.5) A 250 V~
Setting scale:
Inside case
DIN Reg. No.:
DIN TR 77798
17
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