OSTBERG HERU 400-2400 S, User Manual

Page: 43 / 120

43 / 120
2018-02-13 Climatix HERU® 400-2400
External components basic unit
The earth connection terminals, green-yellow, are all connections connected to each
other and in direct contact with DIN rail and through that, also in contact with the unit
casing.
Temperature sensors
The temperature sensors are cable sensors, with 6 mm stainless bulb and PVC cable in
custom length. If there are any problems with the temperature sensors, check
resistance using the table below.
Temp. C° -30 -20 -10 0 10 20 30 40 50
Resistance Ω 872 913 956 1000 1045 1091 1138 1186 1235
Internal temp. sensor
Outside air, extract air and exhaust air.
The cable sensor is equipped with 2 m cable, sensor body 6x50 mm.
994020613 Temp. sensor internal 2 m cable Climatix
The supply air temperature sensor
The supply air temperature sensor is designed to be mounted in the supply air duct
(round or rectangular). It is important that it is positioned after the last treatment
module, i.e. after any cooling coils.
The sensor is a cable sensor, i.e. the sensor body is directly mounted at the end of the
cable. The cable is 5 meters long and the recess in the duct is ~130 mm.
The delivery includes a flange mount for the duct, mounted with 2 screws (max 4.2
mm
ø )
995010002 Duct temp. sensor 5 m with mounting flange Climatix
Connection of supply air temp. sensor as follows:
Wh
Air supply
temp.sensor
GT1
41
42
Temp. sensors
GT2, GT3, GT42
Part no.:
GT1
Part no.:
Connection