ECR International 75 Installation, Operation & Maintenance Manual page 16

5 - HYDRONIC PIPING
5-7 SINGLE BOILER USING PRIMARY/SECONDAY PUMPING
12"/305mm Max. apart
Existing closely
spaced tees
12"/305mm
Max. apart in primary
system loop
CH/System
Limit length
Pump
to
5'/1.6 m
Heat exchanger ball Heat exchanger 3/8"/10mm Open
End Wrench
valve open ball valves closed
3/8"/10mm Open
End Wrench
16