Navien Venting Instructions. Horizontal venting can be installed in two ways. Navivent concentric kit install manual en | downloads | navien navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to.
The navien common vent system provides an easy way to install the vent system for up to 8 navien npe water heater or nhb/nfb boiler units. Get in touch with navien technical support or a professional heater repairman to fix the issue. User manual heating system, you must use the navien 4”.
