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Installation
4
i
Important
If there are multiple heat exchangers in one ECOi system, an individual expansion valve must be
installed for each heat exchanger.
4.3
Installation of thermistors
ATTENTION
!
Damage to the thermistor wires
Exposing the wires of thermistors to the outside and/or to direct sunlight might damage the wires
and should therefore be avoided.
► Attach the AHU Kit either directly to the Air Handling Unit or to a wall nearby and make
► Use protecting wire ducts to avoid exposing the wires of thermistors and the electronic
When installing the thermistors, the following limitations and restrictions need to be observed:
42
● Vertical inclination of expansion valve must be less than ±15°.
Expansion valve (MOV)
Pipe to the AHU heat exchanger
● The coil wire must be inserted drooped in the AHU body with the drooping wire being
close to the AHU Kit.
Inside of AHU
AHU Kit
Clamp
Drooping wire
sure that it is not exposed to direct sunlight.
expansion valve to the outside.
● Wires must not be placed outside of equipment.
● Wires must not be cut and wiring connectors must not be detached.
● Thermistors must be Identified by the tag which is wound to each thermistor.
● The head of the thermistor must be attached exactly onto the pipe, because the head
is the most sensitive point of the thermistor.
Maximum contact
Most sensitive point of the thermistor
Pipe to the outdoor unit
AHU Kit – Installation Instructions – 07/2023
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