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10. REFRIGERANT CONNECTIONS
10.1. PIPE LINKS TO BE CREATED ON SITE
This work must be performed by qualified personnel in accordance with the best heating and air conditioning
engineering practices (brazing, vacuum draining, filling, etc.).
²
Only use refrigeration quality copper pipe.
²
Use anti-vibration collars for attaching pipe work
to the walls.
²
To avoid the introduction of foreign bodies into the
pipes (dust, filings, etc.) always fit the pipes with end
caps before handling or work.
²
Carefully unwind pipe coils in the opposite direction to the spirals and take care to avoid creating
folds or twists.
10.1.1. REFRIGERATION PIPE BENDING
The bending radius of the pipes should be equal to or more than 3,5 times de outside diameter
of the pipe.
Do not bend the pipes consecutively more than three times and do not make more than 12 bends
over the complete length of the link.
10.1.2. PIPE BRAZING
Pipes must only be cut with a pipe cutter (no filings) and then de-burred and scoured before brazing.
You are advised to remove all grommets and protect the bodywork before starting any brazing work to avoid
damaging the paintwork.
To avoid introducing any scale deposits inside the pipes we recommend that brazing is performed in a dry nitrogen
atmosphere.
10.1.3. PIPING CONNECTION MAXIMUM LENGTH AND HEIGHT
SYSAQUAC units and indoor units must be connected using less than 30m piping connections lines. Refrigerant
charge must be adjusted regarding the table (Refer to the § REFRIGERANT FLUID CHARGE, appendix VIII).
10.1.3.1. OUTDOOR UNIT AT A HIGHER LEVEL
Install a siphon on the Gas pipe every 5 m
L
30 m maxi.
16
SYSAQUAC
H+
25 m maxi.
Air Handling Unit
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