Setting Orifice in Purmo Steel Radiators (1997): Valve Adjustment, Number Scale & Boiler Position

Question

Hello.
I have problems with the radiators. It's about setting the orifices on the valves.
I have Purmo steel radiators from 1997.
I don't know how this orifice is positioned?
What to relate to?
Is there any scale according to which the orifice is adjusted?
What do the numbers 1,2,3,4,5,6,7 mean and what is N?
What is the best way to position the radiator farthest from the boiler and the closest?
Please help.

Anonymous · Answer

My guess is that it's about setting the flow on the thermovalve.
The orifice is a gasket with a hole inside. (It performs the same task - it regulates the flow)
Judging by the numbers you entered, it is a Danfoss valve.
Both orifices and other regulation on the valve should be calculated according to the power of the heater.
However, it is possible to set it up.
"1" is the lowest flow and "N" is no throttling. (Avoid setting "- - -")
You ask about the rules - yes, closer to the boiler (or rather the pump), the flow is smaller and the further the orifice is given larger (to increase the flow).
Of course, theoretically, because it is done to force the same or appropriate flow to the radiator.
It cannot be done "by eye" in ten minutes.
You have to regulate and check the reaction of the radiators (not only the regulated one at the moment, but also the reaction of the others)
In apartment blocks you should not do it yourself (ie you will not tear your head off) because you can "spoil" other tenants.
In installations with solid fuel boilers, it is not recommended to throttle the radiator furthest from the boiler (do not even install the thermostatic head there)
It can also be another heater, e.g. in a representative room with a room regulator.
This is where the room thermostat should respond, but that's another topic.

cyryl70 · Answer

ok but what to refer to when adjusting the orifice? is there any graduation? throttling, i.e. on the smallest settings, e.g. 1.2 yes?

Anonymous · Answer

There is a dot on the valve body when viewed from the front. (On Danfoss) Settings are made in relation to this dot.

cyryl70 · Answer

at what time or so? dot? ie a recess or a hole right? is it in the same place on every valve? I have 7 radiators I am most interested in the temperature, including 7 - smoke because I mainly live there 1 - boiler room 2 kitchen 3 - bathroom 4 - hall 5 - room 6 - room and 7 - room where it is to be warmest You can set it like this: 1 - 1, 2 - 2, 3 - 3, 4 - 4, 5 - 5, 6 - 6, 7 - 7? Assuming that the heaters closest to the furnace should be choked and not farthest away. Room No. 7 is the farthest from the furnace and it should be the warmest there.

cyryl70 · Answer

is this orifice in the same place in each head? what to do to make the last radiator heat the most? I try to set up but nothing. This radiator is the farthest from the stove

zybie · Answer

maybe it is not the fault of bad closure, but a difficult flow, for example a dirty filter on the central heating return

Zbigniew Rusek · Answer

You need to set it for a higher flow (especially when farthest from the boiler means the highest floor of the building). On the last floor, you can successfully set the highest digit, and maybe even N, but it's probably not necessary. Tip. The setting 1 is not recommended even closest to the boiler and on the lowest floor, because in such blockage the valve may silt up and stop heating altogether. It is worth remembering that when there were no thermostatic valves and radiators were traditionally covered, the most common causes of non-heating (or very poor heating) were air or fouling of the orifice (especially when the opening was very small and the radiator was closed for a long time).

greg_1983 · Answer

I have a question - I have a gas stove installed in my apartment (4 rooms with radiators. From the nearest stove: bathroom, small room, kitchen, large room). What is the best way to set the orifice parameters in the radiators? (apartment not too big ~ 48m). Does it make sense to change something (I have 'N' set to all [except for the bathroom one - I don't know there, because I haven't checked]).
because I wonder ... isn't it better to just set 'N' everywhere and control the temperature on the stove and the 'main' knob on the radiators? (all radiators are properly heated with the 'N' setting)

One more violation of 3.1.13 and I will draw the consequences. Please correct previous posts!
mod.serwisant73

zybie · Answer

Colleague GREG you are theoretically right, but with too large differences in the distance, the pump-heater will not work properly. After all, like everything in this world, water is also easy and shortens its path.

pdarek2 · Answer

Or maybe your heads will not tear off, as "Guest" said, but you will make sure that in a multi-family apartment they will be freezing and you will feel comfortable. I work in such a company and I still have to look for people like you if in a multi-family, because you can shoot your own at will as in previous posts
1 closer to the furnace and not finite at the end.

3.1.13. It is forbidden to publish entries that violate the spelling rules of the Polish language, careless and incomprehensible.
mod.serwisant73

Setting Orifice in Purmo Steel Radiators (1997): Valve Adjustment, Number Scale & Boiler Position

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Post #8

Post #9

Post #10

Post #11

Post #12

Didn't find an answer? Ask Artificial Intelligence

Topic summary