Pump Forced Operation - Honeywell SDC heating and district heating controller Service Manual

SDC / DHC
6.8.9
Function
See also
EN2H-0221GE51 R0808

Pump forced operation

With this function activated, all the pumps are switched on every
day for approx. 20 seconds to protect against blocking owing to
corrosion in case of long switch-off periods (> 24 h) and the mixed
heating circuit is opened temporarily during this period.
5.2.3 "System Parameters" menu, Pg. 72
Control Functions
127