ACV HeatMaster 100 N, Installation, Operation And Maintenance Instructions

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ANNUAL MAINTENANCE
ACV recommends the boilers should be serviced at least once a year.
Maintenance and the burner control must be performed by a qualified
engineer.
More frequent servicing may be required depending on boiler use. If this
is the case, consult your installer for advice.
BOILER MAINTENANCE
1. Put the master switch on the control panel on "OFF" and isolate
power supply to the unit.
2. Turn off the gas or oil supply to the boiler.
3. Remove the flue pipe to gain access to the top of the boiler
4. Remove the casing top panel and lift off the flue reduction collar by
releasing the fastening bolts.
5. Remove the turbulators from the flue pipes for cleaning.
6. Unscrew the burner chamber plate and remove the burner
7. Brush the flue pipes.
8. Clean the burner chamber and the burner.
9. Reassemble turbulators, flue reduction collar and flue pipe,
checking that the gasket of the flue reduction collar is in good
condition. Replace gasket if necessary.
MAINTENANCE OF THE SAFETY DEVICES
- Check that all thermostats and safety devices are working properly.
- Test the safety valves on the central heating and hot water circuits.
SERVICING THE BURNER
For all burners, please refer to the relevant servicing and troubleshooting
instructions in the technical manual of your burner.
DRAINING THE BOILER
Water flowing out of the drain valve may be extremely hot
and could cause severe scalding.
Keep people away from discharge of hot water.
DRAINING THE HEATING CIRCUIT
1. Put the master switch of the control panel on OFF, isolate the
external electrical supply and turn off the gas or oil supply to the
boiler.
2. Close the isolating valves (4) or put manually the 4-way mixing valve
(1) on “0”.
3. Connect a hose to the draining valve (7).
4. Open the draining valve to empty the primary circuit.
DRAINING THE DHW CIRCUIT
1. Put the master switch of the control panel on OFF, isolate the
external electrical supply and turn off the gas or oil supply to the
boiler.
2. Release the pressure in the heating circuit until the pressure gauge
indicates 0 bar.
3. Close valves (1) and (8).
4. Open valves (9) and (10) (first 9 then 10).
5. Allow the drained water to flow into the sewer.
For the circuit to be drained, the draining valve (9) must
be located at ground level.
MAINTENANCE
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