by dedeleco » 21/09/10, 01:30
Amusing!!
A great investment already !!
To simplify the problem, and to be more ecological, we should add a thermal solar heating from 100 to 200m2, and a beautiful large Canadian well at 4 or 6 m deep well dimensioned with water exchanger to store summer heat and find it in winter at 50%, to heat much cheaper !!
Otherwise, the diagram shows the pipe connections but not problems of regulation, temperature measurement, solenoid valve control and the rules of the regulation program, which go with the pipe connections, all of which must remain consistent, whatever the operating conditions hot water generators, heat pump, boiler and insert and uses, radiators and sanitary water. !!.
The more we connect together the more we risk unforeseen problems, even chaos !!
So keep the possibility of operating each element alone without the effect of the others.
The resolution of possible problems will be greatly facilitated.
The heat pump has a lower efficiency for domestic hot water 55 to 60 ° C than for low temperature radiators 30 to 40 ° C (To be quantified) ???
On the diagram only the PAC heats the sanitary ??
I would tend to consider separating these 2 uses more with two mixing boxes at 2 different temperatures. ????????
In summer only the smaller toilet would work with more savings.
It is also necessary to define rules of priority of use between the different sources according to their temperatures and the desired savings and to make a list of the possible problems and incompatibilities to be respected in the connections.
Suddenly running each heat source empty may not be very good by looping them on themselves, risk of overheating, the boiler is regulated on its water temperature, the heat pump too (to be checked), but the insert can boil its water because the power of the heating wood is not regulated.
I would tend to let the insert take out its hot water somewhere as a priority as soon as it is hot, annex radiator or other, with its special circulator which accelerates if its water is too hot ???
Otherwise, the insert having a function similar to the boiler, very hot water possible, I would tend to connect it instead of the boiler as a hot water supplier, with 3-way valves, placing the insert instead of the boiler as long as its water is hotter than that of the boiler, then disconnected ???
I limit myself to these considerations because a thorough careful analysis is necessary, otherwise traps and random operation.
You must provide the specifications and instructions for the mixing box, to better understand the problems envisaged by the manufacturer, to read carefully.
It is not certain that the current problem of too many cycles per hour is due only to the size of the mixing box, but also to the unusual regulation system, to the hysteresis of the thermostats, often not adjustable but which fixes the cadence of cycles in simpler assemblies.
Details of current systems, their regulations and their interconnections must be provided.
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