ᐅ Air-to-Water Heat Pump: Current Consumption and Data

No. That depends on the installed heating manifold and not on the actuator. The actuator only pushes the "pin" to open or close.

OWLer schrieb:


By the way, I looked up the datasheet for my actuators today just for fun. Power consumption is 2W, which would mean 42W standby power over the whole year for my 21 heating circuits if I set all thermostats to MAX. They actually get much warmer in the open position than my heating circuits.

As a quick fix, I have now set all thermostats to frost protection = MIN and manually set the actuators to open. I will monitor the house’s standby power consumption when the heat pump cycles again.

I also have the same actuators. I only have 13 heating circuits, but I also turned the ERRs in the rooms all the way down to frost protection and set the actuators to manual. The actuators no longer get warm like they used to.

OWLer schrieb:

No. That depends on the installed heating circuit manifold and not on the actuator. The actuator only pushes the "pin" to open or close.

However, with some valves, you can adjust how far the actuator opens and the pin extends.

Malz1902 schrieb:

Actuators no longer get as warm as they used to.

I would even go as far as to say that they only get as warm as the connected thermostatic radiator valve (TRV).

I don't understand how there can be a review in a major outlet praising the normally closed function of these parts.

Malz1902 schrieb:

For some valves, you can adjust how far the actuator opens and the pin extends.

But not with this actuator. It can only open or close. To adjust the flow rate in the open position, you need either the sight glass or the "number of turns," the latter of which I personally consider poor practice. The flow rate decisively depends on the downstream heating circuit as well—length/shortness, tight/large bend radii, pipe diameter, and so on.

OWLer schrieb:

No. That depends on the installed heating circuit distributor, not the actuator. The actuator only moves the "pin" to open or close.

How can I adjust the liters of the heating circuit here? Where do I need to turn?

@Dennis89 It looks like a Logafix heating circuit distributor from Buderus. You can find datasheets for it online. However, it’s also quite clear that your heating technician was just too "lazy" to install or buy the sight glasses.

I’m correcting myself—it seems you can actually buy it like that. But I would be surprised if on your heating circuit distributor you wouldn’t simply have to unscrew a blank plug to retrofit the sight glasses.

PS: Sorry for the formatting, I’m too lazy to figure out how to adjust it after copy and pasting 😉