Emptying The Primary Circuit; Emptying The D.h.w. Circuit - Biasi Advance Plus 25C Service Manual

GENERAL ACCESS ANd EmPTyING hydRAuLIC CIRCuITS
6 Remove the terminal block lid F (Figure 2.7).
7 Free the hooks placed on the three sides indicated and rotate
the lid towards left (Figure 2.9).
figure 2.9

2.5 Emptying the primary circuit

1 Close the c.h. circuit flow and return cocks G (Figure 2.10).
h
figure 2.10
2 Remove the front and right panels of the boiler.
3 Open the drain tap I (Figure 2.11) until the boiler is completely
emptied.
4 To help the draining of the primary circuit loose the condens-
ing heat exchanger air purger valve.
figure 2.11
G
CLOSED
OPEN
I

2.6 Emptying the d.h.w. circuit

1 Close the d.c.w. inlet cock H (Figure 2.10).
2 Open one or more hot water taps until the boiler has been
completely emptied.
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