Atag XL75W - Hydraulics Circulation Pumps

20
Installation
Hydraulics Circulation pumps
Pump head diagram, boiler type 75 Pump head diagram, boiler type 125 – 150
Pump head diagram, boiler type 105 Pump head diagram, boiler type 180 – 210
Boiler type Pump type Circulating water volume
(m
3
/h - l/min)
Residual head
(mH
2
O - mbar - kPa)
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XL75W 1 x WILO PARA 8 2,81 - 46,8 2,25 - 37,5 1,5 - 148 - 14,8 3,8 - 373 - 37,3
XL105W 1 x WILO PARA 9 3,90 - 65,0 3,12 - 51,9 0,0 - 0 - 0,0 1,7 - 167 - 16,7
XL125W 2 x WILO PARA 8 4,76 - 79,3 3,81 - 63,5 2,7 - 262 - 26,2 4,8 - 475 - 47,5
XL150W 2 x WILO PARA 8 5,62 - 93,7 4,50 - 74,9 0,7 - 65 - 6,5 3,3 - 321 - 32,1
XL180W 2 x WILO PARA 9 6,70 - 111,7 5,36 - 89,4 0,8 - 80 - 8,0 3,5 - 344 - 34,4
XL210W 2 x WILO PARA 9 7,79 - 129,8 6,23 - 103,8 0,0 - 0 - 0,0 1,6 - 157 - 15,7
For single boiler installation the connection to a low velocity header and secondary circuit pump is strongly
recommended.
For installation of cascaded boilers the connection to a low velocity header and secondary circuit pump is
mandatory.
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The WILO PARA 8 or 9 circulation pump, which is installed at the factory in the boiler, operates continuously and adapts its
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The boiler electronics continues to control the boiler’s output such that the boiler temperature setpoint is maintained.
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