3-inch frame diameter with a shell length of 3

facility managers can quickly address leaks or mechanical failures

s combustion assembly

Always verify your specific valve model number on the nameplate to ensure proper fitment with this technical rebuild set

A compromised bracket often leads to burner misalignment

Viessmann 7855737 Burner Gasket 321894-709 3-inch frame diameter with aThe Viessmann 7855737 Burner Gasket is a critical OEM replacement component designed to maintain a high integrity seal for 1. 5 2. 0 MMBH condensing boilers. As a veteran technician knows, a compromised seal at the burner door or tube interface leads to dangerous flue gas leakage and significant drops in combustion efficiency. This high temperature burner gasket is engineered to withstand the extreme thermal cycling of commercial HVAC systems,