Y Plan

Underfloor Heating Wiring Diagrams

18 October 2016

Here are wiring diagrams for connecting underfloor heating zones to S Plan and Gravity Hot Water systems. Also how to connect UFH Control Centres such as Wunda, Pipypipe and Honeywell. How to connect UFH to an S Plan Central Heating system This schematic wiring diagram shows how to connect a single zone Underfloor Heating to an […]

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Wiring of Y Plan Biflow Central Heating Systems

22 February 2012

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. Online Training        City+Guilds Training        Electrician’s Insurance (To enlarge image click once, and then double click […]

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How does a Y Plan Central Heating 3 Port Mid Position Motorised Valve work?

2 November 2011

Find Mid Position Valves on EBAY… This interesting article is from DIYFAQ.ORG.UK with links to WIKI for further info. It shows a circuit diagram and explains the internal workings of the 3 Port Mid Position Central Heating Valve commonly used in Honeywell Sundial Y Plan (4073A) and similar Drayton Biflow systems. There’s also some useful info on faulty and stiff […]

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