Hitachi UTOPIA R32 Series User Manual

19
PMEN0654 rev.0 - 12/2023
5
GENERALINSTRUCTIONSONTHEINSTALLATIONOFREFRIGERANTPIPES
REFRIGERANT PIPING AND REFRIGERANT CHARGE
5.4.2 Cung copper refrigeraon pipes
Use a pipe cuer and dene the necessary length of pipe and add a
few more cenmetres to give yourself enough margin in case the cut
has to be repeated.
Remove any internal burrs arising from the pipe cuer using a pipe
reamer. While making the cut, slant the pipe downwards to prevent
burrs or shavings from falling inside the pipe.
! CAUTION
•
Ensure the pipe cuer rollers remain perfectly seated on the copper
pipe.
•
Do not use hand saws, circular saws, abrasive grinders or other
tools that generate shavings.
•
Wear appropriate means of protecon during cung or brazing
operaons and installaon (gloves, eye protecon, etc).
•
Strictly follow naonal or local regulaons regarding occupaonal
health and safety.
5.4.3 Bending copper pipes
Where the refrigerant pipes are to be bent, always use a bending tool or a spring, both of a
diameter that is adapted to the pipe to be bent. The bending radii must be as wide as possible so
that the gas or liquid refrigerant ow is not altered and no circulaon noise is generated during
operaon.
! CAUTION
Never bend pipes with radii of less than 90°.
 NOTE
• Bends in refrigerant pipes reduce system performance due to changes in the ow of gas and
liquid refrigerant circulaon.
• Do not use any other tool to bend pipes, as the pipe may be excessively bent or crushed and its
inner diameter reduced.

Hitachi UTOPIA R32 Series Specifications

General

Brand	Hitachi
Model	UTOPIA R32 Series
Category	Air Conditioner
Language	English