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MCA 15 - MCA 25 MCA 25/28 MI
29/04/2010 - 300022146-001-B
7.4.1.
Checking the hydraulic pressure
The hydraulic pressure must reach a minimum of 0,8 bar. If the
hydraulic pressure is lower than 0,8 bar, the symbol bar flashes.
If necessary, top up the water level in the heating system
(recommended hydraulic pressure between 1,5 and 2 bar).
7.4.2.
Checking the opened expansion vessel
Check the opened expansion vessel and replace it if necessary.
7.4.3.
Checking the ionisation current
The ionisation current is displayed in the menu #MEASURES.
¼ See chapter: "Reading out measured values", page 78
7.4.4.
Checking the transfer capacity
If the transfer capacity is noticably low (temperature too low and/or
flow rate less than 6,2 l/min), clean the plate exchanger (domestic hot
water end) and the water filter cartridge.
¼ See chapter: "Cleaning the plate exchanger (domestic hot
water end) and the water filter cartridge", page 106
7.4.5.
Checking the tightness of the combusted
gases evacuation and air inlet connections
Check the tightness of the connection for the evacuation of
combustion gases and the air inlet.
T001580-A
7. Checking and maintenance
101
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