lp-657 Rev. 001 Rel. 000 Date 12.10.18
23
NOTES:
1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes.
2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.
3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.
4. The minimum pipe size for connecting an indirect water heater is 1”
5. The minimum pipe size for connecting a 285 – 1.25”, 399 – 1.5”.
6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with
circulator flanges as an alternative.
7. A mixing valve is recommended if the DHW temperature is set above the factory setting of 119
o
F.
8. Piping shown is Primary/Secondary. System flow (secondary loop) must be greater than the boiler’s primary loop flow.
9. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
10. VERY IMPORTANT – Minimum flow rates outlined in this manual must be maintained through the heat exchanger to minimize short
cycling.
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 10 - Primary / Secondary Piping with Zone Valves and Indirect Priority
Summary of Contents for Elite FT EFT-285
Page 22: ...lp 657 Rev 001 Rel 000 Date 12 10 18 22 Figure 9 Piping Symbol Legend ...
Page 41: ...lp 657 Rev 001 Rel 000 Date 12 10 18 41 Figure 31 Internal Connection Diagram ...
Page 66: ...lp 657 Rev 001 Rel 000 Date 12 10 18 66 Figure 36 Cabinet Replacement Parts ...
Page 69: ...lp 657 Rev 001 Rel 000 Date 12 10 18 69 Maintenance Notes ...