There are many 3 port producers including honeywell horstmann and danfoss to name but a few. Wiring diagrams contains all the essential wiring diagrams across our range of heating controls.
Central Heating Wiring Diagrams Honeywell Sundial Y Plan Gas
Its just a guideline on how the average boiler is wired.
Honeywell wiring diagram y plan. Amend y plan wiring diagram to show correct terminal arrangement for cylinder thermostat. 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. It can be adapted how you need it.
This document has neither been produced nor endorsed by honeywell. The customer only had hot water. Hot water thermostat valve boiler and pump are unchanged.
General cleanup of wiring diagrams. Im investigating a fully pumped honeywell sundial y plan system with a mid position zone valve. Use the information herein entirely at your own risk.
Hot water thermostat valve boiler and pump are unchanged. Central heating wiring diagrams honeywell central heating wiring diagrams sundial y plan please note we do not accept any responsibility for the accuracy of any of the diagrams literature or manuals and information may have been supercededamendedwork must be completed by qualified electricians or heating engineers. The honeywell name.
The sundial w plan is designed to provide independent temperature control of both heating and domestic hot water circuits in fully pumped central heating installations. The diagram can be used as a boiler with a pump overrun as well you just take the pump live neutral earth from the wiring center and run it to the boiler terminals. Wiring is essentially the same as a standard y plan with the room thermostat removed and the controller unit replacing the programmer.
The reason this system is called a y plan is because of the shape of the 3 port valve. Overview of a y plan system. I found that the motor on the valve was knackered and changed it.
Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans. The w plan uses a two position diverter valve which is normally installed to give priority to the domestic hot water circuit. The information in this document is provided as is with no implied warranty.
I also had to replace the sundial wiring centre and swopped the wiring over one for one i think. 10 dec 09 1d remove references to 28mm valves note.
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