LP-517 Rev. 000 Rel. 019 Date 7.21.20
20
FIGURE NOTES:
1. This drawing is meant to demonstrate system piping concept only.
2. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
3. Install a minimum of 6 diameters of straight pipe up and downstream of all closely spaced tees.
4. The minimum pipe size for connecting a 750 boiler is 2”. The minimum pipe size for connecting a 1000 boiler is 2 1/2”.
5. Installations must comply with all local codes.
6. Direct piping is shown. VERY IMPORTANT: Minimum flow rates outlined in the manual must be maintained to minimize short cycling.
7. See Multiple Boiler Manifold Piping chart, this manual, when sizing and installing a multiple boiler system.
The piping will not support the weight of the circulators. Refer to the circulator manufacturer’s instructions to properly support the circulator.
Failure to comply with these instructions could result in property damage, severe personal injury, or death.
Figure 9 - Single Boiler Space Heating - Direct Piping
Figure 10 - Cascaded Boilers Space Heating - Direct Piping