HCL, boiler, radiator valves

[hans1121 0]

Hi, 

How do you guys control a heating system that consists of danfos valves, room temp sensors and a boiler? With a HC2 you can create scenes and a var that controls it.. (if room < reqeusted temp, var +1). But how do you do such thing in HCL?

[jakub.jezek 371]

Hi @hans1121,

 

We use heating panel + linked devices. Atleast that is what I teach new dealers at Fibaro training.

 

Heating panel to control temperature in zones and linked devices to link temperature sensor and boiler, because I need to turn on boiler only when sensor measures temperature that is lower than desired one.

 

If we need some non-standart setting of zones, then we make it through block scenes.

[hans1121 0]

Just now, jakub.jezek said:

Hi @hans1121,

 

We use heating panel + linked devices. Atleast that is what I teach new dealers at Fibaro training.

 

Heating panel to control temperature in zones and linked devices to link temperature sensor and boiler, because I need to turn on boiler only when sensor measures temperature that is lower than desired one.

 

If we need some non-standart setting of zones, then we make it through block scenes.

I dont think I can combine multiple radiator valves with 1 boilerswitch.. it would cause on/off flippering and very fast .. if 1 room is on temp, the switch will be turned off. Even if the second room requests hot water....

[Guest spazpeker]

Use one relay per heating zone with the outputs parrelled together (double switch can be used fit 2 zones)

[jakub.jezek 371]

@hans1121,

 

Like @spazpeker suggest. More switches in paralel. FGS-223 is best for it. That is easiest way how to accomplish that.

[kunoch 27]

As the heating is not a fast system, a timer based scene could work too, e.g. checking every 15 minutes if some adjustment to the boiler is needed due to some valve feedback. maybe more often during the day less often during night.

 

[kariem112 3]

5 hours ago, kunoch said:

As the heating is not a fast system, a timer based scene could work too, e.g. checking every 15 minutes if some adjustment to the boiler is needed due to some valve feedback. maybe more often during the day less often during night.

 

How would that work ? Create a scene that runs every X minutes, but what comes in the lower part of the scene ? I can't make a comparison between desired and actual temp....

 

I think your only option is multiple relais...

Edited June 14, 2017 by kariem112

[kunoch 27]

@kariem112: yes, you are right, does not work as within a scene a varaibel can not be 'handed over' as a value to a command. --> nice try, but fail

 

I do not know how these room temp sensors e.g. from Danfoss work and what kind of feedback they give. I just thought about having the AND instead of achieved with the relays in the IF condition of the scene together with the periodical execution and the THEN is activating the boiler if 'enough' conditions are TRUE. As I do not have one of these devices, I can not do more than guessing.

Edited June 15, 2017 by kunoch

[Guest spazpeker]

On 13/06/2017 at 7:20 PM, hans1121 said:

Hi, 

How do you guys control a heating system that consists of danfos valves, room temp sensors and a boiler? With a HC2 you can create scenes and a var that controls it.. (if room < reqeusted temp, var +1). But how do you do such thing in HCL?

How many zones will you have ?

 

[hans1121 0]

3 hours ago, kunoch said:

@kariem112: yes, you are right, does not work as within a scene a varaibel can not be 'handed over' as a value to a command. --> nice try, but fail

 

I do not know how these room temp sensors e.g. from Danfoss work and what kind of feedback they give. I just thought about having the AND instead of achieved with the relays in the IF condition of the scene together with the periodical execution and the THEN is activating the boiler if 'enough' conditions are TRUE. As I do not have one of these devices, I can not do more than guessing.

Can you clarify that?   what do you mean?

Total will be 7 zones... 

 

[kunoch 27]

@hans1121: as I do not know what kind of information is reported by the wall thermostats, it is hard for me to 'guess' what criteria could be used in the IF of the scene. I thought about something like this:

IF  (Every 15 minutes) & ((set_temperature_zone1 > measured_temperature_zone1) or (set_temperature_zone2 > measured_temperature_zone2) or (set_temperature_zone2 > measured_temperature_zone2)....)

THEN switch_on_boiler.

Maybe some zones are combined with an if, so they are not so important in the condition.

Might make sense to also include the boiler temperature into the if as it might not make sense to heat the boiler up to 80°C. maybe the boiler already has a built in thermal sensor to switch off the heating.

Something similar would also be needed to switch the boiler off again. Would then be if all zones report (set_temperature_zone <= measured_temperature_zone)

maybe this is just impossible with the available data from the temperature sensor. I have no clue.

does this make sense, is it understandable?

Edited June 15, 2017 by kunoch