Y Plan Wiring Diagram For System Boiler

Here coloured wires indicate the permanent mains supply to the boiler and programmer.

Y plan wiring diagram for system boiler.
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Electrical wiring for central heating systems.
This diagram shows the wiring layout using the most typical components.

Wiring diagrams and further information continues below.
This article shows a y plan wiring diagram and gives an overview of the electrical control wiring connections for a typical sundial honeywell yplan or drayton biflow fully pumped central heating system which use a mid position motorised valve.
A y plan system uses a simple valve.

Wiring diagrams and further information continues below.
Y plan boiler systems are designed to control the flow of hot water.
Part 2 in the series looks at s plan wiring a system which uses two separate valves.

One valve for hot water another for heating.
This video covers the wiring and electrical operation of an s plan system with two 2 port valves.
This video covers the wiring and electrical operation of a y plan system.

Electrical wiring for central heating systems.
Part 3 in the series looks at y plan wiring a system which uses a single 3 port valve.
Wiring a y plan system can be confusing but with a bit of patience you should be able to master the basic concepts.

This has one inlet and two outlets one for hot water the.
Here coloured wires indicate the permanent mains supply to the boiler and programmer.
Hot water can either be delivered to the tank or sent round the radiators.