20
Boiler insulation
Door insulation
Item No.
Safety group
0770650
Heating water
pressure gauge
077066
Safety assembly
(This item is omitted for the Micro variants)
Kettle door cord
(This item is omitted for the Micro variants)
Item No.
0770650
Item No.
MH 10/17
44-003
MH 15/23
47-004
MH 30/40
49-004
Door and boiler insulation
(This item is omitted for the Micro variants)
Item No.
MH 10/17
44-004
MH 15/23
47-005
MH 30/40
49-005
Prepare the maintenance work on the heating system as follows:
1.
Cancel the heat request.
2.
Wait 2 min. until the post-purge period is completed.
3.
Switch off the water heater via the main switch on the control panel.
4.
Unplug the connector from the 7-pin burner connector. The power supply to the burner is now interrup-
ted.
5.
Unplug the control panel connector from the socket. The power supply to the boiler is now interrupted.
6.
Dismantle the burner from the boiler.
7.
Carry out the steps for the maintenance work.
8.
Reassemble all the dismantled parts after completing the maintenance work.
Maintenance preparation
maintenance interval
boiler cleaning
Optical inspection annually. When dirty clean with adequate cleaning kit.
(non abrasive)
oil nozzle
Optical inspection annually. Use only genuine spare parts!
Recommended exchange period: annually
ignition electrode
Optical inspection annually. Use only genuine spare parts!
Recommended exchange period: annually
flame tube
Optical inspection annually. Use only genuine spare parts!
Recommended exchange period: every threee years
burner door: gasket and
insulation
Inspect gasket and insulation optically every three years. Tighten up door screws.
Recommended exchange: when needed.
exhaust emission check
After first installation, major repairs or every three years, if exhaust system is longer than 1.5m.
oil filter
Recommended exchange: annually or when the negative pressure is less than -0,30 bar (e.g. -0,35
bar).
oil hoses
Exchange period: every five years
radial fan
Recommended cleaning period: every three years. (depends on environment)
plate heat exchanger for fresh
water
(if mounted)
Cleaning period: every two years. (to avoid or to clean deposition)
Содержание 077480
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