Lochinvar CHA 100 G CE Installation, Commissioning, User & Maintenance Instructions page 60

12
12.3.2
12.3.3
60
Performing maintenance
Checking the anodes
Timely replacement of the anodes extends the service life of the appliance. The
appliance's anodes must be replaced as soon as they are 60% or more used up
(take this into consideration when determining the maintenance frequency).
1. Disconnect the plug of the flue gas thermostat from the connector on the
appliance.
2. Disconnect the draught diverter from the flue gas discharge.
3. Unscrew the screws from the lid on top of the appliance.
4. Remove the lid from the appliance, including the draught diverter.
5. Remove the sealing ring from the appliance.
6. Undo the anodes using suitable tools.
7. Check the anodes, and if necessary, replace them.
8. Now also check the flue baffles
them, if necessary.
9. Place a new sealing ring on the rim of the tank and re-fit the lid.
10. Insert the plug of the flue gas thermostat into the connector on the appliance.
Descaling and cleaning the tank
Scale and lime build-up prevent effective conduction of the heat to the water.
Periodic cleaning and descaling prevents build-up of these deposits. This
increases the service life of the water heater, and also improves the heating
process.
Take the rate of scale formation into account when deciding on the service
interval. Scale formation depends on the local water composition, the water
consumption and the water temperature setting. A water temperature setting of
maximum 60°C is recommended for the prevention of excessive scale build-up.
To guarantee a good, watertight seal around the cleaning opening, replace the
gasket (6), the O-ring (7), washers (4), bolts (3) and if necessary the lid (5) with
new parts before reassembly (see diagram). A special set is obtainable from the
supplier/manufacturer.
To simplify descaling and cleaning of the tank, the appliance is equipped with
two cleaning openings.
2
1
1. Remove the cover plate (1) on the outer jacket (see the figure).
2. Carefully remove the insulation (2) and set it to one side. This will be needed
again later.
(12.4.4 "Checking the flue
5 6
3 4
Instruction manual CHA
s
baffles"). Replace
7
IMD-0235 R2