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Hi Chris. The plan would be that SL from the thermostats will fire the zone valves (S-Plan) accordingly and if any of the 5 heating zone valves are sending 230v to orange wire then the pump will fire.
I am planning to run both boilers at once as much as possible ideally and share the heating load equally. I understand that you could run one boiler some of the time and some at others but will speak to Viessmann technical to sort out these details. Am going to size the exact pump size required if I get the job to be honest as it looks like it takes a wee bit of time to do the calcs on a system this size. Don't want to waste any more time if I don't get it.
Quote for everything has come in at £25k including VAT supplied and fitted. She has got the quote and has said she will look at it tonight and get back to me once her kids are off to bed! Seemed incredibly expensive but the fact she's acknowledged it so quickly means it's not ruled out.
Chris will probably ask to pick your brains if I get this and PM you on here, you seem like you know your stuff regarding larger heating systems. Would that be ok?
Will also read L1a in more detail if I get the job too! Spent 4 hours already designing the system and the controls can be sorted if I get the job. May bung in programmable room stats for each zone all wired in. Will keep you posted.
Cylinder is an 18KW 300L rapid recovery cylinder.
I am planning to run both boilers at once as much as possible ideally and share the heating load equally. I understand that you could run one boiler some of the time and some at others but will speak to Viessmann technical to sort out these details. Am going to size the exact pump size required if I get the job to be honest as it looks like it takes a wee bit of time to do the calcs on a system this size. Don't want to waste any more time if I don't get it.
Quote for everything has come in at £25k including VAT supplied and fitted. She has got the quote and has said she will look at it tonight and get back to me once her kids are off to bed! Seemed incredibly expensive but the fact she's acknowledged it so quickly means it's not ruled out.
Chris will probably ask to pick your brains if I get this and PM you on here, you seem like you know your stuff regarding larger heating systems. Would that be ok?
Will also read L1a in more detail if I get the job too! Spent 4 hours already designing the system and the controls can be sorted if I get the job. May bung in programmable room stats for each zone all wired in. Will keep you posted.
Cylinder is an 18KW 300L rapid recovery cylinder.
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