General Layout - Benchmark MAIN Installation & Service Instructions Manual

1
16
15
14
13
12
5
10
9
Reset
18
8
© Baxi Heating UK Ltd 2007
11
8
20 21 22 23 24
25
30° 40° 50° 60° 70° 80°
27 28
26
30° 40° 50° 60° 70° 80°
19

2.0 General Layout

17
2.1
1.
2.
3.
4.
5.
6.
7.
8.
2
9.
10.
11.
12.
3
13.
4
14.
15.
16.
17.
18.
19.
20.
6
21.
7
22.
23.
24.
25.
26.
27.
28.
When neons 20 to 25 are constantly illuminated, they
indicate the temperature of the central heating water.
Layout
Air Pressure Switch
Expansion Vessel
Burner Manifold
Automatic Air Vent
Circulation Pump
Drain Off Point
Pressure Relief Valve
System Pressure Gauge
PCB
Control Box
Condensate Trap
Flame Sensing Electrode
Spark Electrode
Burner
Primary Heat Exchanger
Fan Assembly
Secondary Heat Exchanger
On/Off/Reset Selector Switch
Temperature Control
Flame Failure or Blocked Condensate Drain
Safety Thermostat Activated (Boiler or Flue)
Fault on Fan or Flue
Fault on Pump or Low System Pressure
Fault on Temperature Sensor
Fault on Temperature Sensor
Power On
Boiler On
Burner On
2
bar
8