Problem: What size vent is needed to vent 3 boilers?
Information:
(3) lochinvar Knight XL boilers 650,000 Btu.
Installation Manual calls out common vent application move to a category II increaser size from 6" to 8". I believe this to be slightly undersized.
Attached design and manual for clarity.
Information:
(3) lochinvar Knight XL boilers 650,000 Btu.
- All 3 units are inline and going to a common vent.
- Natural draft application
- Rise of each unit is roughly 6' and 20' lateral with 1 elbow 2 tees.
Installation Manual calls out common vent application move to a category II increaser size from 6" to 8". I believe this to be slightly undersized.
Attached design and manual for clarity.
