ACV Prestige Box 200 LP, Installation, Operating And Maintenance Instructions For The Installer And The User

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Prestige Box: A1004849 - 664Y7100 • A
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MAINTENANCE
SHUTTING DOWN THE SYSTEM
1. Switch the boilers off using the ON/OFF master switch and isolate the external power supply.
2. Close the gas supply valve of the appliance.
SAFETY INSTRUCTIONS FOR MAINTENANCE
Essential recommendation for the electrical safety
• Isolate the external power supply of the appliance before performing any operation,
unless it is required to take measurements or perform system setup.
Essential recommendations for safety
• Water flowing out of the drain valve may be extremely hot and could cause severe
scalding.
• Check the tightness of the flue pipe connections.
Essential recommendations for the correct operation of the appliance
• It is recommended to have the appliance and the burner(s) serviced at least once a
year or every 1,500 hours. More frequent servicing may be required depending on the
appliance use. Please consult your installer for advice.
• The boiler and burner maintenance will be carried out by a qualified engineer, and
the defective parts may only be replaced by genuine factory parts. Refer to the boiler
installation, Operation and Maintenance manual for the correct procedures.
• Control the tightness of the hydraulic circuit connections.
• Make sure to replace the gaskets of the removed items before reinstalling them.
DRAINING THE HEATING CIRCUIT
1
2
3
1
Essential recommendations for safety
• If an external DHW tank is installed in the system, make sure to drain the heating
(primary) circuit or bring its pressure to 0 bar before draining the DHW tank.
• Water flowing out of the drain valve may be extremely hot and could cause severe
scalding. Keep people away from the hot water discharge.
Set-up conditions
• Boiler(s) switched off using the ON/OFF master switch
• External power supply isolated
• Gas supply closed
Heating circuit draining procedure
1. Close the isolating valves ( 1 ).
2. Connect the drain valve ( 2 ) to the sewer with a hose.
3. Open the 3-way valve (
3
) (in vertical position) to empty the circuit and allow air to enter.
4. Open the drain valve ( 2 ) to finish emptying the heating circuit of the boiler.
5. Close the drain valve ( 2 ) and the 3-way valve ( 3 ) once the heating circuit of the boiler is empty.