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
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13,333 btus of 15mm pipe
- Thread starter Fallout
- Start date
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?
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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