Water Tightness Test; Evacuation; Opening The Valves - DeDietrich AWHP-2 MIT-IN-2 iSystem Installation And Service Manual

AWHP-2 MIT-IN-2 iSystem
A
C
35 bar
A
C
A
D
25/06/2014 - 7616371-001-04
4.8.2.
1. Check that the shut off valves A and B are closed.
B
2. Connect the pressure gauge valve and the nitrogen cylinder to the
3. Progressively pressurise the refrigerant connection pipes and the
4. Check the watertightness of the connections with a "leak detector"
5. Release the pressure and release the nitrogen.
M002297-A
M001470-B
4.8.3.
1. Check that the shut off valves A and B are closed.
B
2. Connect the vacuum gauge and the vaccuum pump to the
3. Produce a vacuum in the indoor module and the refrigerant
4. Check the pressure according to the recommendations table
M002297-A
5. Close the valve between the vacuum gauge/vaccuum pump and
6. After shutting off the vaccuum pump, immediately open the valves.
M002499-B
4.8.4.
1. Remove the cap D on the refrigerant off valve A.
B
2. Open the valve with a hexagonal spanner by turning anti-
3. Put the cap back in place.
D
4. Remove the cap D on the refrigerant gas shut off valve B.
5. Open the valve with a pair of pliers, turning it anticlockwise by a
6. Put the cap back in place.
M002295-B
7. Disconnect the vacuum gauge and the vaccuum pump. Put the

Water tightness test

operating connection C on the shut off valve A.
indoor module in steps of 5 bar until you reach 35 bar.
spray. If leaks occur, redo and recheck tightness.

Evacuation

operating connection C and the shut off valve A.
connection pipes.
below:
Outside temperature (°C)
Pressure to be reached (Pa)
Draw-off evacuation time after reaching the
pressure (h)
the shut off valve A.

Opening the valves

clockwise until it stops.
quarter turn.
cap back in place.
4. Installation
ª 20 10
0 - 10
1000 600 250 200
1 1 2 3
35