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ACV Delta Pro Pack 25 Manual

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EN • 25
ENFRRU PL DE IT ES NL
Delta Pro S / Delta Pro Pack : 664Y4900 • E
FILLING OF DHW AND HEATING CIRCUITS
IMPORTANT
It is essential that the DHW cylinder is filled and pressurised
before filling the heating circuit.
1. Fill the DHW circuit and bring it up to pressure.
2. Fill the heating circuit taking care not to exceed the 2bar pressure limit.
3. Vent the air from the top of the boiler.
4. After venting the air from the system, bring the pressure up to the static
head plus 0.5 bar.
Head of the heating system:
• 10 m ➠ heating circuit pressure = 1.5 bar
• 15 m ➠ heating circuit pressure = 2 bar
BOILER COMMISSIONING
1. Check the gas or oil supply connection and make sure there are no leaks.
2. Check the boiler power connection, the boiler room ventilation and
ensure that there are no leaks in the combustion gas discharge pipes or
the burner chamber plate.
3. Set the boiler thermostat or potentiometer to between 60°C and 90°C.
4. Set the Summer/Winter selector to the desired position.
5. Put the ON/OFF switch to the ON position.
6. Carry out the required venting, measurement and setting procedures.
RECOMMENDATION
ACV advises that boilers should be serviced at least once a year. This service
and any boiler inspections must be carried out by a qualified technician.
BOILER MAINTENANCE
1. Switch off the power at the external isolator and shut off the gas or oil
supply.
2. Set the on/off switch on the control panel to the OFF position.
3. Remove the top cover of the boiler (A).
4. Take off the top of the Flue reduction (B).
5. Remove the turbulators (C) from the flue pipes (D) for cleaning.
6. Remove the burner chamber plate [E].
7. Brush the flue pipes (D).
8. Clean the combustion chamber (F) and the burner.
9. Check the condition of the burner chamber plate insulation [H] and
replace if necessary.
BURNER MAINTENANCE
Refer to the burner’s service and repair instructions.
MAINTENANCE OF SAFETY DEVICES
- Check that all thermostats and safety devices are working properly:
boiler thermostat, cut-off thermostat and manual reset safety
thermostat.
- Check the safety valves of the heating and DHW circuits.
DRAINING OF THE BOILER
Water flowing out of the drain cock is very hot and can
cause severe burns. Keep people away from discharges
of hot water.
DRAINAGE OF THE HEATING CIRCUIT
1. Turn the ON/OFF switch on the control panel to the OFF position,
isolate the boiler’s external electrical supply and close the gas or oil
supply valve.
2. Close the isolating valves (3) on the heating circuit.
3. Connect a flexible hose to the drain valve (8).
4. Open the drain valve (8) to empty the heating circuit.
DRAINAGE OF THE DHW CIRCUIT
1. Turn the ON/OFF switch on the control panel to the OFF position,
isolate the boiler’s electrical supply and close the gas or oil supply valve.
2. Lower the heating circuit pressure until the gauge indicates zero
pressure.
3. Close the valves (7 and 11).
4. Open the valves (9 and 10) (9 first then 10).
5. Let the hot water circuit empty into the drain.
The drain valve (9) must be at ground level to allow the cylinder
to drain.
Water flowing out of the safety valve or the safety unit
may be extremely hot and could cause severe burns.
COMMISSIONING AND MAINTENANCE
… 25 …


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