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can anyone tell me how to wire this unit the wireing diagram shows mains in bridge L2 and 5 what termials do i connect to switch on the boiler 
horstmann 425 tiara
- Thread starter thomas1351
- Start date
H
holmslaw
..
Horstmann ship a very detailed leaflet with instructions on how to wire up their programmers both as replacements and also as new installs for S plan, Y plan etc.
It will be in the box with the Tiara (that's probably what Wills told Kate )
It will be in the box with the Tiara (that's probably what Wills told Kate )
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