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Idiomas disponibles
Idiomas disponibles
Refrigerant piping
Air thermistor
Two air thermistors are supplied inside the control box. The purpose
and identification of each one is as follow:
PCB socket /
Item
Thermistor
connector color
Inlet air thermistor
Blue
Outlet air thermistor
Red
C A U T I O N
In case that the thermistors supplied with the Dx-Interface are not
long enough, please make sure that the length extension is properly
done avoiding the sensing distortion and that the joint is properly in-
sulated to avoid any electrical failure.
N O T E
When fitting the air thermistor, remember that they must be secure
correctly, in an adequate place to avoid external influences, like am-
bient conditions, and where the air temperature is significant.
Thermistor extension installation
A
8 REFRIGERANT PIPING
8.1 GENERAL NOTES BEFORE PERFORMING PIPE WORK
1
Prepare locally-supplied copper pipes.
2
Select the piping size with the correct thickness and correct material
able to withstand sufficient pressure.
3
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 sys-
tem. Take particular care to ensure that all copper piping is clean and
dry internally.
D A N G E R
The system design pressure is 4.15 MPa. The compression
strength of the pipes must exceed 12.45 MPa (3 times the design
pressure).
C A U T I O N
Cap the end of the pipe when pipe is to be inserted through a wall
hole.
9
PMML0243A rev.3 - 12/2014
PCB socket
Thermistor
number
length (mm)
THM 1
1200
THM 2
1200
B
Cable clamp example
1
Tie (Field supplied)
2
Cable clamp (Field supplied)
3
Thermistor (supplied)
C A U T I O N
The thermistor must be installed properly in order to avoid water onto
the thermistor.
Typical installation
A
Thermistor
PCB socket
extension
THM1
Blue
THM2
Red
THM3
Black
THM5
Yellow
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 lon-
ger 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.
Do not use insulation material that contains NH3, as it can damage
copper pipe material and become a source of future leakage.
Completely insulate both refrigerant gas piping and liquid piping bet-
ween the indoor unit and the outdoor unit.
If not insulated, in cooling mode and high ambient humidity condi-
tions, dew will appear on the piping surface.
Refrigerant circuit and Water circuit must be performed and inspected
by a licensed technician and must comply with all relevant European
and national regulations.
3
B
Thermistor
Thermistor
extension
Blue
Blue
Red
Red
Black
Black
Yellow
Yellow
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