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GENERAl ACCESS ANd EMPTyiNG HydRAuliC CiRCuiTS
figure 2.4
5 Remove the screws E and remove the service panel (Figure
2.5);
6 To gain access to the electronic regulation PCB remove the
screws F and remove the control panel lid (Figure 2.5);
figure 2.5
E
f
f
2.4 Access to the sealed chamber
figure 2.6
G
G
To gain access to the parts contained in the sealed chamber it is
necessary to remove the lid of the sealed chamber. For this pur-
pose, remove the front and side panels of the case, remove the
screws G as indicated in Figure 2.6 and remove the lid.
2.5 Emptying the primary circuit
1 Close the c.h. circuit flow and return cocks.
2 Remove the front and right panels of the boiler.
3 Open the drain tap I (Figure 2.7) until the boiler is completely
emptied.
4 Close drain tap again once the emptying has been complet-
ed.
figure 2.7
i
2.6 Emptying the d.h.w. circuit
5 Close the d.c.w. inlet cock;
6 Open one or more hot water taps until the boiler has been
completely emptied.
