solid fuel and multizone heating

liveandnetural

hi guys from the electrical forum i posted this question and had little response so will try in in here

#6 fishdog
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Boiler control 3 Channel time clock - with 3 zone valves and 3 stats
Here is a control arrangement that I have often used when installing 3 zone valves to be controlled by a 3 channel time clock. It is very simple to use and also very efficient. This is because an individual zone can be selected and switched on independently. The boiler can heat 1 zone on its own far quicker than it can heat 3 zones at the same time. Often it is desirable to heat just hot water for a bath or just the radiators downstairs etc. Connecting stats to the zone valves ensures that once the boiler has reached its set point it will switch off even if the time clock is “calling” for it thus using the boiler to a minimum saving expensive fuel.

Note: When the zone value operates it is the auxiliary connections on the valve that switches on or off the boiler. The auxiliary connection wires are often colored orange and grey and not polarity conscious. Any zone valve switching on will then switch on the boiler with this dry contact.



mulizone heating
great post 2011 seen it in the stickies i have used it a few time and it works a treat .its great for a two zone heat and cylinder system worked of one boiler but a common system is also to have a solid fuel heat source wither its a stove back boiler or cooker(range) feeding the system
i have a few questions on best practice on wiring and on plumbing of thees types of systems
1 any wiring diagrams
2 any plumbing drawings
3 whats the best way to deal with solid fuel heat source in the event of a power cut when it feeds into a dhw cylinder or rads ie to make it i.e.failsafe