3.1
FILLING THE HEATING AND HOT
WATER CIRCUITS
1.
Fill the domestic hot water circuit and bring it up to pressure.
IMPORTANT
The hot water tank must be pressurised before the
heating circuit is filled.
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: 1.5 bar = 10 m – 2 bar = 15 m.
5.
Check the power connection, the boiler room ventilation, and ensu-
re that there are no leaks in the flue gas discharge pipes.
6.
Set the thermostat (1) to between 60 and 90° C.
3 START-UP
4
SERVICING
Fig. 10: Control panel
7.
Set the Summer/Winter selector (3) to the desired position.
8.
Switch the on/off switch (2) to the ON position.
9.
Check the gas supply pressure on starting up.
3.2
BURNER TROUBLESHOOTING
Refer to the servicing and troubleshooting instructions for the burner.
Before servicing or repairs, switch off the power at the
mains switch fitted in the boiler room by the electrician.
2
1
3
3
2
5
4
7
1
8
6
4.1
RECOMMENDATION
ACV advises that boilers should be serviced at least once a year.
The burner must be serviced and tested by a competent engineer.
4.2
SERVICING THE GAS BOILER
1 - Switch off the power at the mains switch outside the boiler and
close the gas tap.
2 - Set the on/off switch on the control panel to the OFF position.
3 - Release and remove the chimney flue (1) to free the top of the
boiler.
4 - Remove the jacket top (2) and lift off the flue reducer (3).
5 - Remove the baffles (4) from the flue pipes (5) for cleaning. Replace
them if in poor condition.
6 - Unscrew the burner chamber plate (6).
7 - Brush the flue pipes (5).
8 - Clean the burner chamber (7) and the burner (8).
9 - Check that the insulation on the burner chamber plate (6) is in
good condition.
1. Chimney flue
2. Jacket top
3. Chimney flue reducer
4. Baffles
5. Flue pipes
6. Burner chamber plate
7. Burner chamber
8. Burner
Fig. 11: Main components.
4.3
SERVICING THE SAFETY DEVICES
-
Check that all thermostats and safety devices are working properly:
boiler thermostat, cut-off thermostat and manually reset safety
thermostat.
-
Test the safety valves on the central heating and hot water circuits
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