Cleaning The Condensing Primary Exchanger And The Burner - Biasi ADVANCE 25S User Manual

Main circuit
drain valve
Fig. 10.6
• To make draining easier, lift the plug 22 of
the automatic relief valve in Fig. 10.7.
Fig. 10.7
10.5 Cleaning the condensing
primary exchanger and the
burner
Removing the fan burner unit 32 in Fig.
10.8.
- 70 -
MAINTENANCE
CLOSED
OPEN
10
22
N
P
Q
O
M
Fig. 10.8
• Remove the front panel and lower the
controls panel (see "Dismantling the ex-
ternal panels" on page 68).
• Unscrew the connector L, remove the fix-
ing fork K and remove the pipe J.
• Unhook the silencer pipe.
• Insert a flat screwdriver in the connector
recess M and lever towards the bottom,
disconnect the connector at the same
time O by pulling towards the front O (Fig.
10.8).
• Disconnect the fan connector P by press-
ing the plastic hook Q positioned at the
bottom part of the connector (Fig. 10.8).
• Unscrew screws N and remove the fan
burner unit 32 (Fig. 10.8)
• Extract the burner casing by pulling it out-
wards.
32
K
J
L