Chiltrix AC series Heating & Cooling series CX30, Инструкция по установке и эксплуатации

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Example of head calculation
To calculate the head pressure for the correct water flow, the pipe length must be measured and all fittings
counted. It is advisable to use flexible red oxygen barrier pex piping to avoid as many elbows as possible. All
fittings have an equivalent length of pipe already calculated, available on the next page under PEX Fittings
Pressure Drops. Add up the equivalent length of pipe for the fittings, 13.8’ + 11.7’ =25.5’. Then, add this to
the actual pipe, 25.5’+115” = 140.5’ of 1” pipe. Once you know the total length of pipe, use a (1” PEX 10%
Glycol, feet of head per 100 feet of tubing chart), to get the head for 1’ of pipe, at 40°F and 4.76 GPM. This
comes to (.0500) feet of head per foot. 140.5 x .0500=7.02 ft. of head. Add up all head calculations, 7.02 +
2.3 + 8.35 + 8.3 = 23.67 ft. of head. Next we will look at the Wilo Pump curve on page 13. Maximum head at
4.76 GPM is 25 ft.
If using the CX30SE (Free Cooling option) the CX30SE’s pressure drop is 4.5 PSI when active.