Installing The Chiller Lines; Chiller Line Geometric Limits And Installation Examples - Immergas AUDAX PRO 5 Instruction And Recommendation Booklet

5
INSTALLING THE CHILLER
LINES.
- The length of the pipes between the outdoor
and indoor units and the difference in the pipe
lengths after the first junction and the drop
must not exceed the indicated limits.
- R-410A is a high pressure coolant.
- Only use pipes that are certified for chilling and
follow the installation methods below.
- Only use clean pipes with no harmful ions,
oxides, dust, traces of iron or moisture.
- Only use equipment and fittings for R-410A.
Manometric unit. Use an R-410A manometric
unit to keep foreign objects from getting into the
chiller lines and prevent reading errors.
Vacuum pump. Only a vacuum pump with a
non return valve must be used to prevent the
oil inside it from getting into the chiller circuit
when it stops. This pump must be able to create
a vacuum of up to 500 mTorr (66 Pa).
Flare nuts. Only use the flare nuts supplied
with the unit.
5.1 CHILLER LINE GEOMETRIC LIMITS
AND INSTALLATION EXAMPLES.
The maximum lengths of the chiller lines are
listed below, based on the condensing unit model
and the type of installation (fig. 5-1).
Audax Pro 5
A ≤ 30 m
H1 ≤ 20 m
H2 ≤ 20 m
N.B.: it is recommendable to provide for a siphon
in the immediate vicinity of the condensing unit.
If the length of the chiller line is greater than
the one given in the machine pre-load, it is
recommendable to provide for a siphon halfway.
A siphon is also recommendable in the event of
installation with drops between the condensing
unit and the hydronic unit.
Audax Pro
8 and 10
≤ 50 m
≤ 30 m
≤ 15 m
5-1
A
H2
15 15
H1
A