DORCHESTER DR-FC 120, Installation, Comissioning And Maintenance Instructions

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Instruction manual DR-FC 85
s
1. Remove the cover plate (1) on the outer jacket (see the figure).
2. Undo the bolts.
3. Remove the cover and the gasket.
4. Inspect the tank and remove the loose scale deposits and contamination.
5. If the scale cannot be removed by hand, descale the water heater with a
descaling agent. Contact the supplier/manufacturer for advice on what
descaling agent to use.
6. Close the cleaning opening. To avoid damage to the tank, tighten the bolts
that fasten the lid with a torque no greater than 50 Nm. Use suitable tools for
this.
15.3.3 Clean condensation water discharge
To prevent blockages, it is essential to clean the condensation water discharge
and condensation trap regularly.
15.4 Gas-side
maintenance
15.4.1 Introduction
The following steps must be carried out on the gas side:
1.
Clean burner .
2. Clean heat exchanger .
3. Finalizing maintenance .
15.4.2 Clean burner
1. Detach the burner.
2. Remove all contamination present on the burner.
3. Fit the burner.
15.4.3 Clean heat exchanger
1. Detach the burner.
2. Clean the combustion chamber of the heat exchanger using a vacuum
cleaner and a soft brush.
3. Detach the chimney flue.
4. Clean the end of the heat exchanger using tap water.
5. Fit the burner.
6. Fit the chimney flue.
Note
Check the pressure differential again after cleaning. If the pressure
differential is too low following cleaning, please contact the supplier of the water
heater.
1
IMD-0080 R1