Outside Temperature Sensor; Floating Switching Contact Connection - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Electrical connections

Outside temperature sensor

Fitting location for outside temperature sensor
■ North or north-westerly wall, 2 to 2.5 m above
ground level; in multi storey buildings, in the upper
half of the second floor
Not above windows, doors or vents
■
Not immediately below balconies or gutters
■
■ Never render over.

Floating switching contact connection

Connection at plug
lH
One of the following functions can be connected:
External demand
■
■ External blocking
■ DHW circulation pump external demand (pushbutton
function, pump runs for 5 min). Cannot be connected
with Vitodens 222-W.
■ Room temperature controller (room thermostat)
For room temperature-dependent operating mode
A
1 L N
?
lH
Fig. 39
A Floating contact
(cont.)
!
Outside temperature sensor connection
Connect outside temperature sensor on plug
heat management unit. See page 42.
2-core lead, length up to 35 m with a cross-section
2
of 1.5 mm
Assigning functions in the commissioning assis-
tant
See commissioning assistant in "Commissioning".
Installation sequence
to
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45