3 .4 .1 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
High
pressure
Nitrogen
Max. 10 bar
during 30 mn mini.
Connection
Liquid
Gas
-
If pressure drop, get it down to 1 bar and look for leaks
with a leak detector, repair and repeat the test.
Lo
Hi
UE
MH
Liaison...
liquide
gaz
Haute
pression
Contrôle
d’étanchéité
Vanne fermée,
Contrôle pression
High
pressure
Closed valve,
pressure control
Leak control
-
When the pressure is stable and leakage is excluded,
drain nitrogen letting a pressure above atmospheric
pressure (0.2 to 0.4 bar).
figure 27 -
Connexion of the hose on the "Gaz" valve
3 .4 .2 Creating a vacuum
The 3 empty method (ANNEX 2) is highly
recommended for any installation especially when
the outdoor temperature is below 10 ° C.
-
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
Vacuum pump
High
pressure
Vacuum pump
Connection
Liquid
Gas
Vacuum gauge
-
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 . . . . .
-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
Refrigerant connexion
(gas)
Plug (A)
Hex / Allen key (4mm)
3-way valve
Load orifice
Plug (B)
High pressure hose (red)
Installation and commissioning instructions "1485 - EN"
- 29 -
Heat pump alféa hybrid duo gas
Содержание WOYG112LHT
Страница 51: ... Installation and commissioning instructions 1485 EN 51 Heat pump alféa hybrid duo gas ...
Страница 69: ... Installation and commissioning instructions 1485 EN 69 Heat pump alféa hybrid duo gas ...
Страница 90: ...Installation and commissioning instructions 1485 EN Heat pump alféa hybrid duo gas 90 ...
Страница 91: ...Installation and commissioning instructions 1485 EN 91 Heat pump alféa hybrid duo gas ...