ᐅ Flow rate setting for underfloor heating at the manifold in liters per minute (L/min)
Created on: 27 Dec 2022 12:53
V
vaderle
Hello everyone,
I have set a desired temperature of 21.5°C (70.7°F) on my heating system (air-to-water heat pump) at the bottom. The room thermostats are all fully open (set to 33°C (91.4°F)).
So far so good. Almost all rooms reach 21.5°C (70.7°F). Only in the bedroom (upstairs) does it reach a maximum of 20.7°C (69.3°F). Now I wanted to increase the flow rate slightly at the distribution manifold. According to my online research, you only need to turn the red cap on the flow indicator to increase or decrease the flow. This should allow more warm water to reach the room and raise the temperature.
However, below the flow indicator, I found a sticker from the heating installer. The sticker says “Warning! The flow indicator serves only to shut off the heating circuits.” (see the photo)
Does this mean that fine adjustments cannot be made there at all? Where else can the flow rate in liters per minute be adjusted?
Does this mean that fine adjustments cannot be made there at all? Where else can the flow rate in liters per minute be adjusted?
I have set a desired temperature of 21.5°C (70.7°F) on my heating system (air-to-water heat pump) at the bottom. The room thermostats are all fully open (set to 33°C (91.4°F)).
So far so good. Almost all rooms reach 21.5°C (70.7°F). Only in the bedroom (upstairs) does it reach a maximum of 20.7°C (69.3°F). Now I wanted to increase the flow rate slightly at the distribution manifold. According to my online research, you only need to turn the red cap on the flow indicator to increase or decrease the flow. This should allow more warm water to reach the room and raise the temperature.
However, below the flow indicator, I found a sticker from the heating installer. The sticker says “Warning! The flow indicator serves only to shut off the heating circuits.” (see the photo)
Does this mean that fine adjustments cannot be made there at all? Where else can the flow rate in liters per minute be adjusted?
Does this mean that fine adjustments cannot be made there at all? Where else can the flow rate in liters per minute be adjusted?
R
RotorMotor6 Jan 2023 09:36vaderle schrieb:
But I find the Roth label misleading. It says "Flow indicator serves only to shut off the heating circuits." As a layperson, I would read that to mean I can close the heating circuit by turning the dial.You can do that too. 😉Otherwise, trying is the best way to learn.
With all the writing, one could have just tried turning it once?
RotorMotor schrieb:
That’s possible too. 😉
Otherwise, trial is the best way to learn.
With all this writing, couldn’t you have just tried turning it once? I agree with you. But it’s easier when you can immediately see the reaction (heating circuit closes) to an action (turning setting 1 clockwise) right away (display drops to 0 or float moves down). If I only notice that the temperature slowly decreases over several days (because the bedroom is still indirectly heated by other rooms), it’s harder for me to draw a direct conclusion. That’s why I have uncertainties and all these questions.
I will try carefully turning the two scales in the bedroom—where I think (though apparently can’t read properly) the heating circuit is closed—counterclockwise, and see if the room temperature rises more again.
There have also been repeated, apparently incorrect, reports here that the scale is only for reading and cannot be adjusted.
Similar topics