Immersion Temperature Controller; Contact Temperature Controller - Viessmann VITODENS 242-F Technical Manual

Control units
(cont.)
Mixer PCB
0
1 8
5 8
Specification
Rated voltage
Rated frequency
Rated current
Power consumption
IP rating
Safety category
Permissible ambient temperature
– During operation
– During storage and transport
Rated relay output breaking capacity

Immersion temperature controller

Part no. 7151 728
May be used as a maximum temperature limiter for underfloor heating
systems.
The temperature limiter is installed into the heating flow and switches
the heating circuit pump OFF if the flow temperature is too high.
0
7 2 1 3

Contact temperature controller

Part no. 7151 729
May be used as a maximum temperature limiter for underfloor heating
systems (only in conjunction with metal pipes).
The temperature limiter is installed into the heating flow and switches
the heating circuit pump OFF if the flow temperature is too high.
VITODENS
230 V~
50 Hz
2 A
1.5 W
IP 20D to EN 60529
Ensure through design/instal-
lation
I
0 to +40 °C
–20 to +65 °C
Heating circuit pump sÖ
Mixer motor
Required runtime of the mixer motor
for 90 ° ∢
Flow temperature sensor (contact temperature sensor)
4 2
6 6
Secured with a tie.
Specification
Cable length
IP rating
Sensor type
Permissible ambient temperature
– During operation
– During storage and transport
Specification
Cable length
Setting range
Switching differential
Breaking capacity
Setting scale
Stainless steel sensor well
DIN reg. no.
2(1) A 230 V~
0.1 A 230 V~
approx. 120 s
5.8 m, fully wired
IP 32D to EN 60529
Ensure through design/instal-
lation
Viessmann NTC 10 kΩ at
25 °C
0 to +120 °C
–20 to +70 °C
4.2 m, fully wired
30 to 80 °C
max. 11 K
6(1.5) A 250 V~
inside the casing
R ½ x 200 mm
DIN TR 1168
VIESMANN
99
7