Panasonic PAW-160MAH2L Installation Instructions Manual page 46

Installation
When installing the expansion valve, the following limitations and restrictions need to be
observed:
● Wires must not be put out of equipments.
● Wires must not be cut and connector of wires must not be detached.
● The distance from AHU heat exchanger must not exceed 6 m.
● Pipe reducers must be installed in the fi eld where applicable.
For example, for 10HP ECOi systems, piping size to outdoor unit is Ø 9.52 mm
(instead of Ø 15.88 mm*).
● Vertical inclination of expansion valve must be less than ±15°.
● The coil wire must be inserted drooped in the AHU body with the drooping wire
being close to the AHU Kit.
i
Important
If there are multiple heat exchangers in one ECOi system, an individual expansion valve must
be installed for each heat exchanger.
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AHU heat exchanger
Pipe to the outdoor unit
Max. length: 6 m
Flare connection:
Ø 15.88 mm
Pipe to the outdoor unit
Expansion valve (MOV)
Pipe to the outdoor unit
Pipe to the AHU heat exchanger
Inside of AHU
AHU Kit
Drooping wire
Expansion valve (accessory)
Pipe to the AHU heat exchanger