Start Up; Troubleshooting - Vaillant V 12-060 M2W Installation Manual

12.3 Start Up

Fig. 12.5 Filling the installation.
Legend
1 Two-way valve
2 Allen key to open valves
• Open the two-way valve by twisting the allen key 90º
anticlockwise and close it after 6 seconds. The
installation will be filled with coolant.
• Check the installation again for tightness:
• If there are leaks see section 12.4.
• If there are no leaks, continue.
• Remove the service manifold.
• Open the two and three-way service valves by twisting
allen key anticlockwise as far as it will go.
Fig. 12.6 Opening of the two and three-way valves.
Legend
1 Two-way shut off valve
2 Three-way service valve
3 Allen key (not supplied) to open valves
Split Type Installation Manual
Preparation for Use 12
• Seal the two and three-way service valves with the
corresponding protective covers.
Fig. 12.7 Protective covers.
Legend
1 Valve cap
2 Two and three-way valve covers
• Power up the unit and run it for a few moments
checking that it carries out its functions correctly (for
more information see the user manual).

12.4 Troubleshooting

If the event of a gas leak, during operation proceed as
follows:
• Recover the remaining refrigerant from the system.
- You will need the correct refrigerant recovery unit
and refrigerant reclaim cylinder to achieve this.
Warning!
Recovery and re-charging of refrigerant can only
be completed by qualified and competent
persons. This is a legal requirement.
Warning!
Never release refrigerant into the environment!
Refrigerant R410A is a harmful product for the
environment.
• Check the flare joints first as these are the most likely
place for refrigerant to leak.
• Repair the leak, replace indoor and outdoor parts
which are the cause of the leak as necessary.
• Fill the unit with the correct weight of refrigerant
using accurate and calibrated electronic scales.
• Proceed to check for leakage as described above.
• Dispose of any unwanted refrigerant carefully. Follow
local environmental rules and deposit only in a
recognised refrigerant reclaim facility.
EN 23