Immersion Thermostat; Contact Thermostat; Internal H1 Extension - Viessmann VITODENS 222-F Technical Manual

Control units
(cont.)
Specification, flow temperature sensor
Lead length 5.8 m, fully wired
IP rating IP 32D to EN 60529; ensure through
design/installation
Sensor type Viessmann NTC 10 kΩ at 25 °C
Permissible ambient temperature
– Operation 0 to +120 °C
– Storage and transport –20 to +70 °C

Immersion thermostat

Part no. 7151 728
May be used as a maximum temperature limiter for underfloor heat-
ing 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 thermostat

Part no. 7151 729
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

Internal H1 extension

Part no. 7498 513
The internal H1 extension is part of the standard delivery and is inte-
grated (not for Vitodens 222-F and 242-F).
VITODENS
Specification
Lead length 4.2 m, fully wired
Setting range 30 to 80 °C
Switching differential Max. 11 K
Breaking capacity 6(1.5) A, 250 V~
Setting scale Inside the casing
Stainless steel sensor well R ½ x 200 mm
DIN reg. no. DIN TR 1168
Specification
Lead length 4.2 m, fully wired
Setting range 30 to 80 °C
Switching differential Max. 14 K
Breaking capacity 6(1.5) A, 250 V~
Setting scale Inside the casing
DIN reg. no. DIN TR 1168
6
VIESMANN
85