Honeywell Home Y87RF2024 Installation Manual page 4

5.1 Wiring for a basic boiler (not requiring a pump overrun).
The boiler relay powers the boiler live input.
230V
50-60Hz
L
N
Place link here
BDR91
N L
<5A
L A B C
N L
A-B:5(3)A
A-C:5(3)A