Reply 51 - 71 - 101
4.2 General view and main components
A
22
278
161
196
C
114
7
10
252
11
A
Model Reply 51/i
B
Model Reply 71/i-101/i
7
Gas inlet
10
System delivery
11
System return
16
Fan
19
Combustion chamber
22
Burner
32
Heating circulating pump
36
Automatic air vent
44
Gas valve
82
Detection electrode
114 Water pressure switch
154 Condensate drain pipe
161 Condensing heat exchanger
179 Non-return valve
186 Return sensor
188 Ignition electrode
EN
44
16
22
81
278
82
161
19
186
196
193
C
22
278
161
196
193
179
7
114
36
10
252
32
11
253
154
fig. 42 - General view
193 Trap
196 Condensate tray
252 3-way drain and shut-off cock
253 Shut-off cock
278 Double sensor (Safety + Heating)
C
cod. 3540H322 - 09/2008 (Rev. 01)
B
Cascade control unit and support bracket (op-
tional)
16
44
81
82
19
186
193
16
44
81
82
19
186
179
36
32
253
154
89