UTICA BOILERS SSC UBSSC-075 Installation Operation & Maintenance page 20

5 - HYDRONIC PIPING
5-8C Multiple Boilers Using Primary/Secondary Pumping with Open External Primary Loop
12"/305mm Maximum Separation
Existing closely spaced tees
12"/305mm
in primary system loop
Maximum
Separation
CH/System
Pump
System
Size common piping
Temperature
per maximum heat
Sensor
capacity of entire
system
Limit
length to
5' (1.6m)
Heat exchanger
ball valve open
(as shipped)
Up to 16
boilers
3/8"/10mm Open End
Wrench
20