Hisense Hi-Therma Serie Manual De Instalación Y Mantenimiento página 23

PIPING WORK
7 PIPING WORK
Make sure that refrigerant piping installation complies with the
legislation EN378 and local legislation.
7.1 GENERAL NOTES BEFORE
PERFORMING PIPING WORK
• Prepare locally-supplied copper pipes.
• Select the piping size with the correct thickness and correct
material able to withstand sufficient pressure.
• Select clean copper pipes. Make sure that there is no dust or
moisture inside the pipes. Blow the inside of the pipes with
oxygen free nitrogen to remove any dust and foreign
materials before connecting them.
?
N O T E
A system with no moisture or oil contamination will give maximum
performance and lifecycle compared to that of a poorly prepared
system. Take particular care to ensure that all copper piping is clean
and dry internally.
• Cap the end of the pipe when pipe is to be inserted through
a wall hole.
• Do not put pipes on the ground directly without a cap or vinyl
tape at the end of the pipe.
• If piping installation is not completed until next day or over a
longer period of time, braze off the ends of the piping and
charge with oxygen free nitrogen through a Schrader valve
type access fitting to prevent moisture and particle
contamination.
• It is advisable to insulate the water pipes, joints and
connections in order to avoid heat loss and dew condensation
on the surface of the pipes or accidental injures due to
excessive heat on piping surfaces.
• Do not use insulation material that contains NH3, as it can
damage copper pipe material and become a source of future
leakage.
• It is recommended to use flexible joints for the water piping
inlet and outlet in order to avoid vibration transmission.
• Refrigerant circuit and water circuit must be performed and
inspected by a licensed technician and must comply with all
relevant European and national regulations.
• Proper water pipe inspection should be performed after piping
work to assure there is no water leakage in the water circuit.
Location of Refrigerant and Water Pipeline are shown below.
•
Water
inlet
75 94
7.2 REFRIGERANT PIPING CONNECTION
Piping connection size of indoor unit is shown below.
Model
044(2.0HP)
060(2.5HP) Ø 15.88 (5/8")
080(3.0HP)
Torque required is shown below.
Pipe Diameter
Ø 6.35
Ø 9.53
Ø 12.7
Ø 15.88
?
N O T E
Screw up the nut cap by two wrenches. Heat preservation material
on site should be used to prevent heat leakage of gas pipe, liquid
pipe and connecting nut cap.
7.3 WATER PIPING CONNECTION
1) Piping connection size of indoor unit.
Model Water inlet
044(2.0HP)
060(2.5HP) G1" (male)
080(3.0HP)
11
Liquid Gas
Water
pipe pipe
outlet
75
58
Gas pipe Liquid pipe
Ø 9.53 (3/8")
Torque(N•m)
14~18
33~42
50~62
63~77
Water outlet
G1" (male)