ECR International Utica Boilers UCS 240 Installation, Operation & Maintenance Manual page 20

FIGURE 5-7 - Multiple Boilers Without Manifold, with Common Primary Secondary, Zone Pumps and
(Optional) Indirect
DHW Pump
5 - HYDRONIC PIPING
System
Temperature
Sensor
UP TO 6 BOILERS
Refer to pump manufacturer
literature for proper pump sizing.
18
1
# Boilers on Pipe
Pipe Branch Size
2 2
3 2½
4 3
5 3
6 4
7 4
8 4
PN 240011654, Rev. J [01/31/2020]