Y Plan Wiring Diagram Honeywell. About honeywell home we are the leading suppliers of domestic heating and combustion controls in the uk with products that include time temperature gas and water controls. Sundial y plan satisfies the minimum standard requirements of the building regulations part l1 when used in conjunction with radiator thermostats and an automatic bypass valve.
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. Electrical wiring for central heating systems. Y plan hot water only central heating only hot water and central heating both calling hw satisfied ch calling hw calling ch satisfied both satisfied s plan hot water calling central heating calling.
Contains all the essential wiring diagrams across our range of heating controls.
If used to provide time control for gravity hot waterpumped heating system it is not possible to select. The reason this system is called a y plan is because of the shape of the 3 port valve. Connect the controls pump boiler and 230 volt fused supply to the junction box terminals indicated by the arrows. Gravity system y plan with no hot water off wire.