BOILER SCHEMATIC THEMA F 23 E

3- Ignition module 4- Heating temperature adjuster 5- Hot water temperature adjuster 6- Temperature/ressure gauge 8- Expansion vessel 9- Pump

23 22

10- Automatic air vent 11- Burner

13

12- Heat exchanger bleed pipe 13- Heatexchanger

20

14- Gas valve 16- Heating and hot water thermistor 17 -Ignition electrode

12 19

19- Overheat thermostat 20 -Flame sense electrode

11 17

21 -Loss of water pressure switch 22 -Fan

10 16

23 -Air pressure switch 24 -Gas cock

9 14

A -Heating return

8 3

B -Cold water inlet C -Heating flow

5

D -Domestic hot water flow E -Gas supply

6 4 21 24

ABCDE

THEMA F SB 18 E - THEMA F SB 23 E

3- Ignition module 4- Heating temperature adjuster 6- Temperature/pressure gauge 8- Expansion vessel 9- Pump 10- Automatic air vent 11- Burner

23 22

12- Heat exchanger bleed pipe 13- Heatexchanger 14- Gas valve 16- Heating and hot water thermistor

13

17 -Ignition electrode 19- Overheat thermostat 20 -Flame sense electrode

12 19

21 -Loss of water pressure switch 22 -Fan

11 17

23 -Air pressure switch 24 -Gas cock

10 16

A -Heating return

9 14

B -Cold water inlet C -Heating flow

8 3

D -Domestic hot water flow E -Gas supply

6 4 21 24

Diagram 4

ACE

Shy 131

6