Installation Of Refrigerant Piping; Installation Of Expansion Valve - Panasonic PAW-160MAH2L Installation Instructions Manual

4.2

Installation of refrigerant piping

When installing the refrigerant piping, the following limitations and restrictions need to be
observed:
● Maximum actual and equivalent piping length
● Maximum branch pipe length to AHU Kit
● Maximum branch pipe length diff erence (between longest and shortest piping from
the fi rst branch)
● Dimensions of connecting pipes to heat exchanger of AHU system
● Precharged pipe length of outdoor unit
● Additional refrigerant charging amount for longer pipe runs
● Other technical data and limitations of the relevant outdoor units
● Local piping design regulations
● Best practices for piping design
● Instructions for the safe handling of R32 (see → 1.4 Instructions for safe handling
of R32)
i
Important
For technical data, limitations and restrictions not mentioned in this document, refer to the tech-
nical documentation for the relevant ECOi, ECO G and PACi outdoor units.
4.3

Installation of expansion valve

Installation of expansion valve – ECOi and ECO G systems
!
NOTICE
Damage to the expansion valve wires
Exposing the wires of the expansion valve 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
sure that it is not exposed to direct sunlight.
► Use protecting wire ducts to avoid exposing the wires of thermistors and the electronic
expansion valve to the outside.
Installation
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