Figure 18 Shears' opening
2.4 Connecting the unit to the boiler
Generally it’s best to place the unit as close as practical to the boiler. If placing the unit away from the
boiler, ensure the piping system is designed to allow the easy removal of air from the boiler piping and
easy flushing of the system.
Copper Pipe Sizing BTU / HR Capacity
½" 16,000 BTU
¾" 36,000 BTU
1" 72,000 BTU
1¼" 110,000 BTU
Table 5 Pipe sizing
2.4.1 Sizing pumps
Note
To size the pump, refer to the Installation manual of the boiler manufacturer for boiler head
loss specifications.