State Water Heaters SCE 65-400, Инструкция по установке, эксплуатации и обслуживанию

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M
aintenance
62 Instruction Manual SCE
9
s
9.3 Water-side
maintenance
9.3.1 Introduction
The following steps should be carried out on the water side:
1.
Check anodes .
2. Descale and clean the tank .
9.3.2 Check anodes
Timely replacement of the anodes extends the service life of the appliance. The
anodes that are present must be replaced as soon as a usage rate of 60% or
more has been reached (take this into consideration when determining the
maintenance frequency).
Remember
The draught diverter
and the cover may be
hot.
1.
Remove the flue gas thermostat connector from the connector on the unit.
9.3.3 Descale and clean the tank
Scale and calcium deposits prevent effective conduction of the heat to the
water. Period descaling prevents build-up of this deposition. This means that the
service life of the appliance is extended further benefiting the heating process.
The speed of scaling should be taken into account when determining the
maintenance frequency.
1. Remove the cover plate
1
on the external shell. See Figure 9.1 .
2. Undo the bolts.
3. Remove the cover and the rubber O ring.
4. Inspection the tank and remove any dirt.
5. Then remove the calcium deposition using Borcoil
(1)
.
6. Close the cleaning opening.
Use a new rubber O ring for this.
Figure 9.1 Cleaning opening
IMD-0128
1
2
. Disconnect the draught diverter from the flue gas outlet.
3
. Undo the screws on the draught diverter.
4
. Remove the draught diverter from the appliance.
5
. Undo the screws on the cover on the top of the appliance.
6
. Remove the cover from the appliance.
7
. Remove the sealing ring from the
tank
.
8
. Undo the anodes using the appropriate tool.
9
. Check the anodes and if necessary replace them.
1
0
. Now also check the flue baffles. Replace them, if necessary. See paragraph
’9.4.4 Check flue baffles’ .
1
1
. Fit a new sealing ring around the edge of the tank and replace the cover.
1
2
. Reconnect the
flue gas thermostat connector to the connector on the unit.
n
Remark
This unit is also appropiate for the use of Power Anodes. These are
available as an accessory and can be ordered separately. Please check
your Power Anode instructions for correct use or consult your installer.