Connecting The Outdoor Temperature Sensor - Viessmann Vitodens 200-W B2HA 112 Installation Instructions Manual

Vitodens 200-W B2HA 112, 150, 399, 530 Installation

Connecting the Outdoor Temperature Sensor

1. Remove cover of outdoor temperature sensor.
2. Mount wall-mount base (cable entry must point
downward).
IMPORTANT
The outdoor temperature sensor should be mounted 6.6
to 8.2 ft. (2 to 2.5 m) above ground level on the north or
northwest wall of the building. In case of a multi-storey
building, mount outdoor temperature sensor in the upper
half of the second floor.
Ensure that sensor is not located above windows, doors
and air vents, or immediately underneath a balcony or
gutter.
The outdoor temperature sensor must not be covered
by plaster. If mounting on an unplastered wall, make
allowances for thickness of plaster or remove sensor
before plastering wall.
3. Route cable from the boiler control board to the
outdoor sensor. Connect cable to sensor terminals
(wires are interchangeable).
Cable specifications:
2-wire cable, max. cable length 95 ft. (35 m) with a
wire size of min. AWG 16 copper.
4. Connect the outdoor temperature sensor to terminals
X 3.1/X3.2 on the boiler control board (wires are
interchangeable).
5. Place cover on base and snap into place.
IMPORTANT
Cable to the outdoor sensor must not be laid near line
voltage wiring (120/240V).
Control Connections
51