Reassembly The External Panels; 10.5 Emptying The C.h. System; Cleaning The Condensing Primary Exchanger And The Burner - Biasi BASICA COND 28S User Manual And Installation Instructions

10.4 Reassembly the external
panels
Side panels
Fit the external panels "F" and "H" in the
reverse order to that described on section
"Dismantling the external panels" on page
63.
Front panel
• Fit the front panel "E" in the reverse order
to that described on section "Dismantling
the external panels" on page 63.

10.5 Emptying the C.H. system

• Close the C.H. isolating valves (4 and 8
in Fig. 10.7).
4
Close
position
Fig. 10.7
• Loosen the central heating drain cock 7
indicated in Fig. 10.8.
- 64 -
MAINTENANCE
Fig. 10.8
• To make draining easier, lift the plug 22 of
the automatic relief valve in Fig. 10.9.
8
Fig. 10.9
10.6 Cleaning the condensing
Removing the fan burner unit 33 in Fig.
10.10.
CLOSED
OPEN
7
primary exchanger and the
burner
Main circuit
drain valve
22