Hi I am putting the pipework in for a heating system and am left with 3 rads to pick up with 13,333 btus of heat needed for this 3 rads. After the last rad on the circuit before these 3. Is around 4 meters, I have ran 22mm from there. I plan on reducing down to 15mm around 300 mm before picking up the first of these 3 rads. Should that be ok? On a sealed combi system
13,333 btus of 15mm pipe
- Thread starter Fallout
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It should be okay as the flow rate, velocity and pressure loss, will allow these rads to be heated effectively over this length with 15mm pipe.
But as above, I would run the 22mm, as far as possible before reducing down.
But as above, I would run the 22mm, as far as possible before reducing down.
Is it a completely new installation? If so, what is the design temperature differential?
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If I kept it at 22 till after the first of this 3 rads. This rad is 4185 btu. leaving around 9000 btus for the over two rads in 15mm Its just the pipe work goes around a corner, so thought of reducing down in that elbow. Would you advise against and this and take 22mm to that rad only 300mm from the elbow.
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