i am simulating a 52 floor mixed use project
the heating system is fed from boilers in the basements and on each 10
floor i have a mechanical room where a heat exchanger exist.The system can
be summarized as follow:
1-the boilers have their own pump which pump to a buffer tank
2- from the buffer tanki have a header connected to three loops
3-each loop is connected to a heat exchanger
4- heat heat exchanger is connected to a pump
5- each pump is connected to a collector
6- to each collector i have one loop ( with its pump) dedicated to
baseboard loop and the other for the water heaters.

to conclude how can I model pumps in series? and do i have to model heat
exchangers?

*Tarek Dalati PMP,LEED AP BD+C,CPMP,CxA*