We
reserve the right to make changes
Page 26 of 40
Fixed pace: Run step 3 or a constant RPM control in the step that secures a circulation at a mini-
mum of 20% of the design flow when there is not a heating need from the central heating system.
Auto. Can be used if there is a fixed circulation. Do not work for a pressure controlled circulation
valve.
Proportional pressure. Can be used if there is a fixed circulation. Do not work for a pressure con-
trolled circulation valve.
Constant pressure. Can be used if there is a fixed circulation. Do not work for a pressure controlled
circulation valve. Circulation is set with a minimum flow of 20% of the design flow.