24
LP- 276 REV. 9.4.14
Figure 8
NOTES:
1. This drawing is meant to demonstrate system piping concept only. Installer is responsible for all equipment and detailing required by local codes.
2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators.
3. Boiler circulator(s) operate continuously.
4. The minimum pipe size for connecting to a water storage tank is 1 ½”.
5. The minimum pipe size for connecting the boiler is 1 ½” for the Mod Con 300 VWH and 2” for the 500 and 850 models.
6. All pumps are shown with isolation flanges or full port ball valves for isolation. The alternative is standard flanges with full port ball valves and a
separate flow check valve.
7. Install a minimum of 12 diameters of straight pipe upstream of all circulators and check valves.
8. Install a vacuum relief valve in accordance with local code requirements.
9. Multiple boilers and storage tanks shall be installed with reverse return piping (as shown).
10. Mixing valves are recommended on all tanks if hot water temperature is above 119
o
F.
11. Expansion tank must be rated for use with potable water.
12. Use either indirect/tank sensor or system/pipe sensor mounted on common return to the boiler.
13. Aquastat or system/pipe sensor connects to DHW sensor input on boiler.
Содержание Mod Con 300 VWH
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