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Morning, I have a job later this week with the above , Viessmann Vitodens System boiler. It has a 4 pipe setup with internal diverter and at present there is a wireless thermostat/programmer controller in the hallway. Customer wants a Honeywell Evohome System and I just wondered if I can wire...

Afternoon all, I have a customer with a heavily extended semi which now has 4 beds, 2 bathroom and 5 reception rooms. They have started working from home and want to zone the heating system, unfortunately the system boiler and cylinder is in the garage with 2 x 22mm primary pipes disappearing...

Morning all, I've just bought a 4 bedroom/ 2 bathroom property and wanted some advice on which way to go with the water system. I've redone the drains and in the process replace the incoming mains to 25mm from the external meter. At the moment this supplies 20l/m at around 1.2bar, static...