Mod Con 300 - Page 18

Cascade Multiple Mod Con Boilers with
Indirect Priority on One Boiler
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LP-205-J Rev. 5/14/08
PART 5: BOILER PIPING (CONTINUED)
NOTES:
1. This drawing is meant to show system piping concept only.
2. An Anti-Scald mixing valve is recommended if the DHW temperature is set above the factory setting
of 119°F.
3. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
4. Piping shown is Primary/Secondary
5. Reference Figure 5-2 to determine manifold pipe sizing.
6. System Flow (Secondary Loop) must be greater than the boiler’s primary loop flow.
GAS-FIRED BOILER Boiler Manual
17