DORCHESTER DR-FC 25, Инструкции по установке, пусконаладке и обслуживанию

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Maintenance
94 Instruction Manual DR-FC
12
s
3. Fit the orifice.
12.4.4 Cleaning 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 flue gas discharge.
4. Clean the end of the heat exchanger using tap water.
5. Fit the burner.
6. Fit the flue gas discharge.
n
Remark
Check the pressure differential again after cleaning. If the pressure
differential is too low following cleaning, please contact the supplier of the
water heater.
12.5 Finalising mainte-
nance
To finalise the maintenance carry out the following steps:
1. Fill the water heater. See paragraph
’4.2 Filling the water heater’ .
2. Re-start the water heater. See ’7.2 Starting up’ .
3. Remove the
SERVICE REQUIRED
message. Do this by:
pressing
R
once, followed by
E
once.