REFRIGERANT PIPES PREPARATION
CAUTION!
Before starting installation check for the following:
а
) Apply copper tubing used for installation of air conditioning systems (1/4'' and 3/8”) with
appropriate insulation (at least 8 mm), Fig. 4, suitable for use with refrigerant R417a;
Insulation
Fig. 4
b) Do never apply pipes thinner than 0.8 mm;
c) Secure the simplest and shortest passage (max. distance 8 m. length and 3 m displacement),
d) Protect both pipes and cables to prevent damages.
CAUTION!
The pipes and fittings for the refrigerant must be thermally insulated in order to
prevent burns, cuts or loss of product.
The pipes should not be wet and dirty. Avoid any sharp bends of pipes or harm to its cylindrical
shape. Any bending must be carried out with suitable tool.
CONNECTING THE REFRIGERANT TUBING WITH THE INDOOR UNIT
(WATER HEATER)
а
) Unfold required pipes length from the rolls;
b) Remove the refrigerant nipples protective nuts of the indoor unit (make sure there is no dirt or
moisture);
c) Cut the pipes desired length with suitable tool avoiding formation of burrs and distortions. The
cut must be perpendicular to the pipe axis (Fig. 4);
7
Marking
External diameter [mm]
Thickness [mm]
1/4“
6,35
0,8
3/8“
9,52
0,8
