The y plan has one three port mid position valve supplying heating and hot water for domestic use as shown below. T7 hw on st6400300200 st712722.
Honeywell Uk Wiring Guide Issue 14 Thermostat Electrical
Honeywell y plan wiring. Link l 5 8 in backplate. Honeywell sundial plan wiring centre part number. T6 hw off y plan only. 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. Electrical wiring for central heating systems. The s plan has two separate 2 port motorized valves one for central heating and one for domestic hot water.
Part 3 in the series looks at y plan wiring a system which uses a single 3 port valve. The sundial y plan is designed to provide independent temperature control of both heating and domestic hot water circuits in fully pumped central heating installations. Terminal t 3 ch on. This has one inlet and two outlets one for hot water the. The y plan and s plan names are more commonly used when other honeywell controls are also used programmer room thermostat cylinder thermostat and wiring centre. This insight inspired the latest overhaul of honeywell homes wiring guide app.
Central heating electrical wiring part 3 y plan duration. Faq wiring diagram y plan pump overrun st9420 and dt92e faq wiring diagram s plan pump overrun st9420 and dt92e faq wiring diagram s plan plus pump overrun st9420 and dt92e faq wiring diagram combination boiler st9120 honeywell t4 additional wiring diagrams lyric t6 additional wiring diagrams v4043 zone valve s plan operation. If the property uses a combi boiler rather than a heat only boiler the boiler will usually contain a diverter valve. Honeywell home wiring guide app all the information you need when you need it. Bypass valves on s plan and y plan heating systems short cycling prevention plumbing tips. T3 hw on.
The basic difference between the y plan and the s plan is the type of valves used in the pipework. 42005748 001 wiring a honeywell programmer to the wiring centre st699. With most installers now running their businesses from their smartphones todays installer apps need to offer a whole lot more besides product information. Work safely please note we. 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. John ward 169243 views.
V4073a y plan how a mid position valve operates within a y plan heating system how a w plan heating system operates faq pump overrun wiring diagrams for s plan incorporating a st9400 programmer. T1 hw off y plan only.
Gallery of Honeywell Y Plan Wiring
