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Adding zone to existig combi heating system
Buying a house that has a combi boiler in the garage.
I will change the house to a programable themostat rather than the current regular themostat. We are adding a Convervantory, but I want to connect this to the heating (not sure if underfloor yet, or U/F and rads) using a zone, so that we can heat the house and leave the conservatory cold (or on a programmable stat, seperate to the house) Whilst at it, I am thinking of doing the same with the garage, so that the heating can fire to heat the garage if required (i.e only on a "frost setting" for the garage). What is the easiest way to acheve this? We are effectivly creating 3 zone, each with there own stats. |
#2
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Adding zone to existig combi heating system
Bob Smith wrote:
Buying a house that has a combi boiler in the garage. I will change the house to a programable themostat rather than the current regular themostat. We are adding a Convervantory, but I want to connect this to the heating (not sure if underfloor yet, or U/F and rads) using a zone, so that we can heat the house and leave the conservatory cold (or on a programmable stat, seperate to the house) Whilst at it, I am thinking of doing the same with the garage, so that the heating can fire to heat the garage if required (i.e only on a "frost setting" for the garage). What is the easiest way to acheve this? We are effectivly creating 3 zone, each with there own stats. Relative piece of cake. You need one stat (possibly wireless and/or timed) one motorized valve Some wire. Insert motorized valve into zone plumbing take switch contacts and wire in parallel with other motorized switch contacts so *any* motorized valve will call for the boiler. connect local switched fused spur heating live to thermostat and return to motor on valve. Connect up neutrals. Done. Unless you have an 'orrid all built=in type combi. There things get more interesting. |
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Adding zone to existig combi heating system
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#4
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Adding zone to existig combi heating system
On Tue, 04 Sep 2007 12:35:40 +0100, The Natural Philosopher wrote:
Bob Smith wrote: Buying a house that has a combi boiler in the garage. I will change the house to a programable themostat rather than the current regular themostat. We are adding a Convervantory, but I want to connect this to the heating (not sure if underfloor yet, or U/F and rads) using a zone, so that we can heat the house and leave the conservatory cold (or on a programmable stat, seperate to the house) Whilst at it, I am thinking of doing the same with the garage, so that the heating can fire to heat the garage if required (i.e only on a "frost setting" for the garage). What is the easiest way to acheve this? We are effectivly creating 3 zone, each with there own stats. Relative piece of cake. You need one stat (possibly wireless and/or timed) one motorized valve Some wire. Insert motorized valve into zone plumbing take switch contacts and wire in parallel with other motorized switch contacts so *any* motorized valve will call for the boiler. connect local switched fused spur heating live to thermostat and return to motor on valve. Connect up neutrals. Done. Unless you have an 'orrid all built=in type combi. There things get more interesting. Nearly all if not all combis have provision for an external thermostat. This is the way to control the heating. There may be some latest model swhich are using something other than a simple on off control but they probably have 'backwards compatible' control terminals even if not clearly indicated. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html |
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