GF-5050
Innovation Series & ReCon Water Heater
TAG-0043_0Q
Venting and Combustion Air Guide
Page
20
of
39
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
12/01/2016
The vent system for Innovation and ReCon heaters must be installed in accordance with AERCO’s
installation instructions described in this guide.
For Category IV and II Heaters, the vents must be installed to prevent
accumulation of condensate, and have means provided for drainage of
condensate.
3.1. VENT INSTALLATION
NOTE
Figure 8 shows how the vent system is assembled to Innovation water
heaters; installation on ReCon water heaters is comparable.
1. The heaters covered in this section are design-certified as Category II and IV for venting, only
when they are installed with manufacturer specified vent system components and installation
practices.
2. Install vent pipe beginning at the water heater exhaust manifold and work toward the vent cap.
Start by cleaning the top surface of the exhaust manifold and the mating flange section of the duct
starter piece with an alcohol swab and then apply a bead of high temperature red silicon sealant
(such as Permatex Hi-Temp Red RTV or Loctite Superflex Red High Temp RTV) to that surface
(see Figure 8, below).
3. Attach the exhaust connector to the exhaust manifold using the screws supplied with the kit. Use a
cross-tip (Phillips) screwdriver at least 12 inches (305 mm) long. See Figure 1 (page 7) for the list
of available exhaust vent connectors.
4. Vent connectors serving appliances vented by natural draft shall not be connected into any portion
of mechanical draft systems operating under positive pressure
5. For Innovation and ReCon water heaters, horizontal runs shall be sloping upwards
not less than
1/4 inch per foot (21 mm/m)
from the heater to the vent termination.
6. The instructions for the installation of the venting system shall specify that the horizontal portions
of the venting system shall be supported to prevent dips or sags where condensate could collect.
7. Rigidly support vent pipe every 5 feet (1.5 m) and at each elbow. Plumber straps may be used.
8. In a multiple unit common venting setup, to prevent internal exhaust gas recirculation when a unit
is disabled/off, allow for at least 10 feet (3.1 m) of common vertical as a rule of thumb
9. Clearances and enclosures. ALL vent pipe and fittings must be installed with appropriate air space
clearances to combustibles. These air space clearances apply to indoor or outdoor vents, whether
they are open, enclosed, horizontal or vertical or pass through floors, walls, roofs, or framed
spaces. The appropriate air space clearances should be observed between joists, studs, sub
floors, plywood, drywall, or plaster enclosures, insulated sheathing, rafters, roofing, and any other
combustible material. The minimum air space clearance also applies to electrical wires and any
kind of building insulation.
CAUTION
