G115 Direct Vent Installation Instructions

Installation Procedures: Exhaust Terminations and Exhaust Vent Piping.

NOTE: Use only the approved materials listed on the previous page for direct venting of oil-fired

Buderus G115 boilers. Use of any other materials, or systems not installed in accordance with the

instructions contained in this manual will void the ITS listing.

NOTE: Use strictly high temperature rated silicone (500 ºF rated silicone, G.E. 106 or equivalent) and/or

high temperature tape (360º F rated aluminum foil tape) for sealing at all exhaust pipe joints. Check all

seams and joints of the exhaust venting for gas tightness.

NOTE: Maintain clearances to combustibles as indicated in Table 1.

Table 1: Boiler and exhaust vent pipe clearances to combustibles

Front Side Rear Top Galv. Pipe Insul. Oil Vent

24" 6" 6" 6" 18" 1"

Option 1: Aerocowl termination. Option 2: Concentric termination.

Figure 4: Exhaust termination options.

Option 1: Installation of the Aerocowl termination.

1. Cut a 6" round opening in the outside wall at the selected location. Apply silicone to the backside

of the outer face plate and secure it to the outside wall.

2. Insert the Aerocowl termination from the outside up to the outer wall stop. Ensure proper slope.

3. Slide inner plate on the termination up to the inside wall, tighten the gear clamp and secure the

inner plate to the wall.

Option 2: Installation of the concentric termination.

1. Cut a square 7" opening in the outside wall at the selected location. Remove the 4" air intake

collar from the termination assembly.

2. Apply silicone to the back side of the wall face plate. Insert the concentric termination from the

outside. Ensure proper slope. Secure the face plate to the outside wall. Reinstall the 4" collar.