4Water connections
Hot water piping must be supported by suitable hangers or floor stands, NOT by the boiler. Copper pipe systems will be subject to considerable expansion and contraction. Rigid pipe hangers could allow the pipe to slide in the hanger resulting in noise transmitted into the system. Padding is recommended on rigid hangers installed with a copper system. The boiler pressure relief valve must be piped to a suitable floor drain. See the relief valve section on page 23 of this manual.
CAUTION | A leak in a boiler system will cause the | |
system to intake fresh water constantly, | ||
| ||
| which will cause the tubes to accumulate | |
| a lime/scale build up. This will cause a | |
|
Water Connections
Heating Boilers with inputs of 45,000 - 260,000 Btu/hr have 1 1/2" NPT inlet and outlet connections.
CAUTION Field installed reducing bushings may decrease flow resulting in boiler noise or
flashing to steam.
Installation & Service Manual
Circulator Pump Requirements
This is a low mass, high efficiency hot water boiler which must have adequate flow for quiet, efficient operation. The boiler circulating pump must be field supplied. The boiler circulator pump must operate continuously while the boiler is firing. Pump selection is critical to achieve proper operation. A pump should be selected to achieve proper system design water temperature rise. A heat exchanger pressure drop chart (Table 4C) is provided to assist in proper pump selection. Also provided is a System Temperature Rise Chart (Table 4B on page 25). This table provides GPM and boiler
TABLE - 4C
HEAT EXCHANGER PRESSURE DROP CHART
FT/HD
26 
6
5
4
3
2
1
0
0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 |
|
|
| Gallons per Minute |
|
|
| |
CB 45
CB 75
CB 90
CB 135
CB 180
CB 215 
CB 260
