Installation Heat Calculator; Connection Sensors - Zenner MULTIDATA WR3 Manual De Instalacion Y Uso

Español Italiano

Installation heat calculator

The calculator WR3 is preferab-
ly to be mounted on the wall. Do
not mount the device at the pipe or
attach it directly on the flow sen-
sor. The mounting adapter at the
backside of the calculator can be
used for rail mounting or for wall
mounting. For wall mounting de-
tach the adapter and turn it 180°,
attach with at least two screws to
the wall and clip the calculator on
it. For rail mounting lift the adapter
a little bit, place the calculator on
the rail and push the adapter back
until it locks.
Rail mounting
Wall mounting

Connection sensors

The mounting of the temperature
sensors should be done sym-
metrical with direct immersion. If
immersion sleeves are used they
have to be checked for conformi-
ty to MID and have to be marked
accordingly. The installation of
immersion sleeves has to be done
according to DIN EN 1434-2.
■
Sensors are colour-coded (red
= supply (warmer pipe), blue =
return (colder pipe)).
■
Do not buckle, extend or shor-
ten the wires!
■
Do only use paired sensors with
the same serial number on it.
■
At 2-wire systems the cable
length of the temperature sen-
sor for supply and return should
not exceed 2.5 m for PT100,
12.5 m for PT500. At 4-wire
systems the maximum cable
length is 20 m. Consider EN
1434-2 regarding the diameter
of the wires.
■
Supply and return sensors must
be inserted into the immersion
sleeves completely.
■
Installation points in the flow
sensor can be used for symme-
trical installation of the tempe-
rature sensors.
■
Seal temperature sensor after
installation to prevent unautho-
rized demounting (seals inclu-
ded).
23