7
INTRODUCTION
Condexa PRO NA 117 P
26
25
20
10
24
23
22
2
1
3
4
5
6
7
8
14
13
12
11
21
19
18
17
16
15
9
1
3
4
5
15
24
18
23
1
Flue gas exhaust connection
2
Exhaust flue temperature sensor
3
Fan
4
Combustion chamber
5
PCB (printed control board)
6
Flue check valve
7
Drain cock
8
LWCO/Minimum Water Pressure Switch (set to 7
psi/0.5 bar)
9
Pump with integrated check valve
10
Power switch
11
Central heating return
12
Gas supply
13
Central heating supply
14
Condensate drain connection
15
Flow-meter
16
Gas valve
17
Intake pressure for flue gas pressure switch
18
Return temperature sensor
19
Flue gas pressure switch
20
Control panel
21
Ignition/detection electrode
22
Safety Water High-limit Thermostat with manual
reset by PCB
23
Supply temperature sensor
24
Automatic air vent
25
Spark generator
26
Casing