Supplied By www.heating spares.co Tel. 0161 620 6677
Remeha Gas
550/550 Duo
18
1
2
3
1. pressure regulator
2. part load adjustment
ring
3. hydraulic brake
(setting cap)
Fig. 10 Dungs MB-ZRDLE 415 / 420 S22.
10.1 Switching off the boiler
1. Switch off the electric supply.
2. Shut off the gas cock.
Warning:
When switched off and full of water the boiler
could be damaged if the temperature falls below freezing
point.
Note:
Commissioning must only be carried out by a
qualified engineer with the relevant product training and
certification i.e. Acops - Corgi. A commissioning data
sheet / logbook must be completed on site for issue to
owner.
11 MAINTENANCE
To maintain maximum efficiency it is essential to service
the boiler, check safety parameters and re-set combus-
tion once a year.
Normal Service Maintenance
- Isolate power , controls and gas supply.
- Remove front, top casings and flue hood covers.
- Remove gas manifold.
- Remove the burners and floor plates.
- Clean the internal flue ways of the boiler.
- Clean the floor underneath the boiler and boiler room.
- Clean the burners internally and externally using a
soft brush.
- Clean the gas train, ignition, pilot burner, thermostats
and wiring.
- Check and re-set/re-place ignition electrode and ioni-
sation probe as found necessary.
- Re-assemble boiler.
- Check ignition and ionisation cables for connections
and continuity.
- Restore power, controls and gas supply.
- Check start program, ignition time and safety times.
- Check flame protection and thermostats.
- Check boiler input at 100% (full load) and 50% (part
load) load.
- Carryout a combustion efficiency test.
- Check the boiler and immediate installation connecti-
ons for water leaks (seals).
- Check gas train and gas pipe for gas leaks.
- Check flue connections.
- Clean boiler casings.
- Complete a commissioning report.
