Start Up; Troubleshooting - Saunier Duval SDH 17-025 NW Manual De Instalación

MAINTENANCE
• Close the valves on the service manifold and disconnect the
vacuum pump.
• Check the manometer needle after approximately 10-15
minutes have elapsed: the pressure should not rise. If it does
rise, there are leaks in the circuit. Please repeat the process
described on the section 12.1, Checking for leaks.
WARNING!
a
Do not proceed to the next step until a satisfactory
evacuation of the installation has been completed.
Fig. 12.4 Low pressure manometer reading with the low valve
closed: checking for leaks.
WARNING!
a
Danger of malfunction and leaks.
Ensure that the service valves on the outdoor unit are
closed.
12.3

Start up

EN EN
Fig. 12.5 Filling the installation.
Legend
1 Two-way valve
2 Actuation faucet
• 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 the
allen key anticlockwise as far as it will go.
- 20 -
Fig. 12.6
Legend
1
2
3
• Seal the two and three-way service valves with the
corresponding protective covers.
Fig. 12.7 Protective covers.
Legend
1
2
• Connect the unit and run it for a few moments checking that
it carries out its functions correctly (for more information see
the user manual).
1
12.4
2
If the event of a gas leak, 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.
a
• Check the flaring joins.
• Repair the leak, replace indoor and outdoor parts which are
the cause of the leak as necessary.
• Carry out the vacuum (section 12.2).
• Fill the unit with the correct weight of refrigerant using
accurate and calibrated electronic scales.
• Proceed to check for leakage as described above.
1
3
Opening of the two and three-way valves.
Three-way service valve
Allen key (not supplied) to open valves
Two-way shut off valve
1
Service hole lid
Two and three-way valve covers

Troubleshooting

WARNING!
Never release refrigerant into the environment!
Refrigerant R410A is a harmful product for the
environment.
SDH17-NW-I_EN - 01/15 - Saunier Duval
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