Installation & Servicing Instructions ATAG Q-Series
23
7 External hot water cylinders
Depending of the comfort preferences different external hot water cylinders can be
connected to the boiler. The choice of the cylinder depends on the coil output. The coil
output must comply with the boiler output.
A cylinder which is used in combination with a Q 51S or Q 60S, should have a minimal
capacity of 40 kW resp. 45kW (minimal ø28mm coil). The maximum permitted pressure
drop is respectively 20 and 10 kPa at a ow of respectively 1417 and 1587 l/h.
See installation example 17.2 on page 40 for the hydraulic connection.
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