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Quick Reference Guide - Page 11
Pump operation / configuration
Change Pump speed, so that water flow is always greater than the minimum flow rate. If water flow
is lower than the minimum rate during operation, the unit detects error.
Water charging
Charge water until the pressure gauge shows 0.2 MPa (2 bar).
Hydraulic pressure may drop when the trial run begins. In that case, add water.
Air may enter if the charged hydraulic pressure is low.
Loosen the purge valve cap by two turns to release air.
Loosen the cap of the pressure relief valve to release air.
Water may come out of the pressure relief valve.
Release the air completely from the water circuit. Failure to do so
may disable correct operation.
Water quality
The water used must satisfy EN directive 98/83 EC.
Piping insulation
It is recommended that insulation treatment be applied to all pipes. To perform optional cooling
operation, apply insulation treatment of 20 t or more to all pipes.