Design And Functions - Viessmann Vitodens 200-W B2HA 100 Technical Data Manual

Boiler Control

Design and Functions

Boiler Temperature Sensor
The boiler temperature sensor is connected at the control
unit for weather-responsive operation and is built into the
boiler.
Max. ambient temp.
- at operation:
- when storing
or transporting:
DHW Tank Temperature Sensor
Supplied with:
- Cable length approximately 13 ft. (3.75 m),
ready to plug in
- All pipe connections are field supplied.
Specification:
Max. ambient temp.
- at operation:
- when storing
or transporting:
Outdoor Temperature Sensor
Sensor location:
- North or northwest wall of building
- 6.6 to 8.2 ft. (2 to 2.5 m) above ground or in case
of a multi-storey building approximately halfway up
the second floor
Electrical connection:
- 2-wire cable, max. cable length 115 ft. (35 m) with
a wire size of min. AWG 16 copper
- Cable to the outdoor sensor must not be laid near
line voltage wiring (120/240 V)
Max. ambient temp.
- at operation:
- when storing
or transporting:
26
(continued)
32 to 266º F (0 to 130º C)
- 4 to+158º F (-20 to+70º C)
32 to 194º F (0 to 90º C)
- 4 to+158º F (-20 to+70º C)
32 to 194º F (0 to 90º C)
-40 to+158º F (-40 to+70º C)
Vitodens 200-W B2HA 100 to 150 Technical Data
Room Temperature Sensor
Separate room temperature sensor as supplement to the
Vitotrol 200A and 300A; to be used if the Vitotrol 200A
or 300A cannot be installed inside the main living room
or in a suitable position where the unit can capture and
adjust the temperature.
Installation in the main living room on an internal wall
opposite radiators. Never install inside shelf units,
recesses, immediately by a door or heat source (e.g.
direct sunlight, fireplace, TV set, etc.).
Connect the room temperature sensor to the Vitotrol
200A or 300A.
Electrical connection:
- 2-wire cable with a wire size of min. AWG 18 copper
- The cable length between the control unit, remote
control unit and room temperature sensor must not
exceed 98 ft. (30 m)
Max. ambient temperature
- at operation:
- when storing
or transporting: -4 to+149º F (-20 to +65º C)
Supply Temperature Sensor
(strap-on sensor, included with mixing valve actuator
accessory kit),
Installed with a strapping band.
Cable length 19.7 ft. (6 m), ready to plug in.
Max. ambient temperature
- at operation:
- when storing
or transporting:
32 to 104º F (0 to 40º C)
32 to 212º F (0 to 100º C)
-4 to+149º F (-20 to+70º C)