3
11
10
9
21
6
13
14
16
17
7219708 - 01 (04/15)
2
12
5
15
18
4.3
Main Components
1.
7
2.
1
3.
4.
5.
6.
7.
8.
9.
8
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
19
20
4
Description of the Product
Expansion Vessel (Note: This component
is at the left on 32 model)
Boiler Adaptor
Primary Heat Exchanger
Pump with Automatic Air Vent
Central Heating System Pressure Gauge
Fan Assembly with Venturi
Expansion Vessel Locating Stud
Flame Sensing Electrode
Air/Gas Collector
Spark Ignition Electrode
Combustion Box Cover & Burner
Control Box Display
Condensate Trap
Safety Pressure Relief Valve
Gas Valve
Boiler Controls
Boiler Control Box
Boiler Drain Tap
Heating Flow Sensor
Safety Thermostat
Igniter
EcoBlue System
4
21