Worcester 24ijunior Installation And Servicing Instructions page 12

Wall mounted combination boilers for central heating and mains fed domestic hot water
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Fig. 10. Functional flow diagram.
Inputs
Outputs
Electronics/
microprocessor
(Safety Low Voltage)
Convert AC to low
voltage electronics
CH Control knob
Gas valve mode switch
Reset button
12
Electronics
Electronics
Fan
Pump
Electronics

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