UTICA BOILERS OLSSV-050 Installation, Operation & Maintenance Manual page 21

5 - HYDRONIC PIPING
5-8C Multiple Boilers Using Primary/Secondary Pumping with DHW Tank
12"/305mm Maximum Separation
Closely
spaced tees
in primary
system loop
CH/System
Pump
System
Size common piping
Temperature
per maximum heat
Sensor
capacity of entire
system
Limit
length to
5' (1.6m)
Up to 16
boilers
21
P/N# 2400010616, Rev. F [10/26/2015]