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6. Piping installation
Installer reference guide / Mono tank integrated type
72
PWM characteristic curve
PWM input signal(%)
Max.
Spe
ed
The additional pump should be the same type of product as the above graph.
Recommendation
GRUNDFOS UPMM 25-95 (Heating Type)
Air purging
Purge the air. (Fill with a flushing unit with sufficient capacity: avoid aerating the water)
Circulate for long enough to ensure that all air has been bled from the complete water piping system.
NOTE
Make sure both air purge valves (one on the magnetic filter and
one on the backup heater) are open.
All automatic air purge valves must remain open after commissioning.
Cap
Air-vent valve
CAUTION
Unless the flushing work is performed adequately, It might result in malfunctions.