Worcester 24ijunior Installation And Servicing Instructions page 4

2.11.2 Domestic Hot Water:
The appliance can provide domestic hot water whenever it is
switched on electrically.
A demand for hot water will light the burner. The pressure will
immediately rise to maximum. At the end of the demand the fan
will continue to run for 35 seconds if there is no heating
demand.
In winter it may be necessary to reduce the flow at the taps to
maintain the delivery temperature.
2.11.3 Domestic Hot Water and Central Heating:
The demand for hot water will override the central heating
function when the appliance is in the heating and hot water
mode of operation.
Fig. 2. Water flow diagram.
8
6
11
1 2 5
1. CH flow
2. Domestic hot water flow
3. Mains cold water inlet
4. CH return
5. Pressure relief valve discharge 12. Boiler drain point
6. Domestic water flow turbine 13. Charging link (optional extra)
7. Circulating pump
10
3
8. Expansion vessel
9. Primary heat exchanger
10. Expansion vessel charge point
11. Relief valve
4
9
7
12
4
13