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ENGLISH
Performing Leak Tests
To check for gas leaks on the...
Then, using a leak detector,check the ...
Indoor unit
Flare nuts at the end of sections C and D.
Outdoor unit
Valves on sections A and B.
Before completing the installation (insulation of the cables, hose and
piping and fixing of the indoor unit to the installation plate), you
must check that there are no gas leaks.
C
D
A
A
B
C
A
B
C
The designs and shape are subject to change according to the model.
COMPLETING THE INSTALLATION
MH040FX
A2B/MH040FX
A2C/MH050FX
A2B/
MH050FX
A2C/MH18VF1X/MH19VF1X
MH060FX
A3B
MH070FX
A4B/MH080FX
A4B
Important information regulation regarding the
refrigerant used
Refrigerant type
GWP value
R410A
1975
GWP=Global Warming Potential
This product contains fluorinated greenhouse gases covered by the Kyoto
Protocol. Do not vent gases into the atmosphere.
CAUTION
:
Inform user if system contains 3 kg or more of fluorinated greenhouse gases. In this
case, it has to be checked for leakage at least once every 12 months, according to
regulation n¢X842/2006. This activity has to be covered by qualified personnel only.
In case situation above (3 kg or more of R-410A), installer (or recognised person
which has responsability for final check) has to provide a maintenance book, with all
the information recorded according to REGULATION (EC) N¢X 842/2006 OF THE EU-
ROPEAN PARLIAMENT AND OF THE COUNCIL of 17 May 2006 on certain fluorinated
greenhouse gases.
Please fill in with indelible ink,
-
the factory refrigerant charge of the product,
-
the additional refrigerant amount charged in the field and
-
+
the total refrigerant charge.
on the refrigerant charge label supplied with the product.
The filled-out label must be adhered in the proximity of the product
charging port (e.g. onto the inside of the stop valve cover).
Indoor unit
Outdoor unit
= (
) kg
= (
) kg
+
= (
) kg
Contains fluorinated greenhouse gases
covered by the Kyoto Protocol.
Note
a.
Factory refrigerant charge of the product: see unit name plate
b.
Additional refrigerant amount charged in the field
( Refer to the above information for the quantity of refrigerant
replenishment.)
c.
Total refrigerant charge
d.
Refrigerant cylinder and manifold for charging
a
b
c
d
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum and recircu-
lating the R-410A, it’s responsable of installer to pressurize the whole system with
nitrogen (using a cylinder with pressure reducer) at a pressure above 30 bar (gauge).
LEAK TEST WITH R-410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and create vacuum
according to page 23 ~24.
After opening valves, check leaks using a leak detector for refrigerant.
PUMP DOWN (before disconnecing t the refrigerant connections for unit repair,
removal or disposal)
Pump-down is an operation intended to collect all the system refrigerant in the outdoor unit.
This operation must be carried out before disconnecting the refrigerant pipe in order
to avoid refrigerant loss to the atmosphere.
- Shut off all the liquid valve with the Allen wrench.
- Turn the system on in cooling with fan operating at high velocity.
(Compressor will immediately start, provided 3 minutes have elapsed since the last stop).
- After 2 minutes of operation, shut down the suction valves with the same wrench.
- Turn the system off and switch mains supply off.
- Disconnect pipes. After disconnection, protect valves and tubing ends from dust.
- Compressor damage may occur if run at a negative suction pressure.
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