TECHNICAL CHARACTERISTCS
8
2.4 Water circuit
LEGEND
1.
PRIMARY CONDENSING HEAT EXCHANGER
2.
PREMIX BURNER UNIT (GAS
MBURNER)
3.
PRIMARY CONDENSING HEAT EXCHANGER
CONDENSATE DRAIN PIPE
4.
IONISATION ELECTRODE
5.
IGNITION ELECTRODE
6.
FAN
7.
VENTURI
8.
IGNITION TRANSFORMER
9.
ELECTRONIC GAS VALVE
10.
3 BAR PRESSURE RELIEF VALVE - HTG CIRCUIT
11.
AUTOMATIC AIR VENT VALVE
12.
HEATING SAFETY THERMOSTAT
13.
HEATING SENSOR
14.
PUMP WITH AIR VENT
15.
WATER PRESSURE SWITCH
16.
FLUE HOOD
17.
SAFETY THERMO FUSE
18.
EXPANSION VESSEL
19.
ROOM SEAL CHAMBER BACK SID
20.
CONDENSATE TRAP
21.
WATER PRESSURE GAUGE
22.
AUTOMATIC BY-PASS
23.
CONDENSATE DRAIN PIPE
24.
SYSTEM DRAIN VALVE
25.
3-WAY VALVE
26.
FILLING TAP
LEGEND
HR
HEATING RETURN
HF
HEATING FLOW
RCR
REMOTE D.H.W. CYLINDER RETURN
RCF
REMOTE D.H.W. CYLINDER FLOW
CWI
COLD WATER INLET
G
GAS
SC
CONDENSATE DRAIN
4
19
18
17
2
16
5
6
9
11
24
22
14
21
13
1
12
25
20
10
15
23
7
3
8
26