Atlantic alfea extensa duo+ - Final Sealing Test; Additional Charge

• First seal test
- Remove the protective plugs (B) from the charging
hole (Schrader) in the "Gas" valve (large diameter).
- Connect the high pressure hose to the Manifold.
- Connect the bottle of nitrogen to the Manifold
(Use only dry nitrogen type U)
- Pressurize the refrigerant circuit with nitrogen
(10 bar maximum) ("Gas" connection – condensor -
"Liquid" connection assembly).
- Let the circuit under pressure for 30 minutes.
Lo
Hi
UE
MH
Liaison...
liquide
gaz
Haute
pression
Azote
10 bars max.
30 mn mini
- Search for leaks with a leak detector product, repair
and repeat the test.
Lo
Hi
UE
MH
Liaison...
liquide
gaz
Haute
pression
Contrôle
d’étanchéité
Vanne fermée,
Contrôle pression
- When the pressure is stable and leakage is excluded,
drain nitrogen letting a pressure above atmospheric
pressure (0,2 to 0,4 bar).
• Creating a vacuum and lling the refrigeration
connections with gas
- If necessary, calibrate the Manifold gauge to 0 bar.
Adjust the vacuum gauge to the atmospheric pressure
(around 1013 mbar)
- Connect the vacuum pump to the Manifold. Connect
a vacuum gauge if the vacuum pump is not equipped.
Lo
Hi
UE
MH
Liaison...
liquide
gaz
Haute
pression
Vacuomètre
Pompe à vide
- Create a vacuum until the residual pressure* in the
circuit falls below the value given in the following table.
(* measured with the vacuum gauge)
T °C 5°C<T<10°C 10°C<T<15°C 15°C < T
Pmax
- bar . .
- mbar
. . . 0.009 . . .
. . . . . 9 . . . . .
. . . 0.015 . . .
. . . . 15 . . . .
. . . 0.020 . . .
. . . .20 . . . . .
Refrigeration connexion
Plug (A)
Hex / Allen key of 4mm
3-way valve
Load orifice
Plug (B)
Service hose (blue)
fitted with valve push-button
gure 19 - "Gas" hose connection
- Let the pump continue to operate for another
30 minutes minimum after reaching the vacuum.
- Close the Manifold valve and then stop the vacuum
pump without disconnecting any of the hoses in
place.
" If the outdoor temperature is between +5 and
+10 °C, use method 3 empty (see ANNEX 2)
- Remove the access plugs (A) from the valve controls.
- If an additional charge is requires, add the additional
charge before lling the hydraulic unit with gas. Please
refer to the para. "Additional charge", page 21.
- First of all fully open the "Liquid" valve (small)
and then the "Gaz" valve (large) using a hex key
(counterclockwise direction) without forcing
excessively against the stop.
- Remove the hose rapidly to the Manifold.
- Ret the 2 original caps (be sure they are clean) and
tighten them to the recommended tightening torque.
The sealing is performed in the caps only metal to metal.
The outdoor unit does not contain any additional
refrigerant, enabling the installation to be purged.
Flushing is strictly forbidden.
2.7.2 Final sealing test
The sealing test must be performed with a certied gas
detector (sensitivity 5g/year).
Once the refrigeration circuit has been gassed as
described above, check that all the refrigeration
connectors are gas-tigh (6 connectors for models 5 & 6,
5 connectors for models 8 and 4 connectors for models 10).
If the arings have been made correctly, there should
be no leaks. Eventually, check the tightness of the
refrigerant valves caps.
" If there is a leak:
- Bring the gas into the outdoor unit (pump down).
The pressure should not drop below atmospheric
pressure (0 bar to read on Manifold) so as not to
contaminate the recovered gas with air or moisture.
- Remake the defective connection,
- Repeat the commissioning procedure.
High
pressure
High
pressure
High
pressure
Vacuum pump
Nitrogen
Max. 10 bar
during 30 mn mini.
Closed valve,
pressure control
Connection
Liquid
High pressure hose (red)
Refrigeration connecxion (gas)
Leak control
Connection
Liquid
Gas
Gas
Vacuum gauge
Installation and operating manual "1578 - EN"
Heat Pump alféa extensa duo +
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