EPV SERIES CONDENSING WATER BOILER
34-501 07/13
8
Horizontal Venting Through a Wall
WARNING: Vent terminals for the flue and inlet air must use only vent terminations as supplied by the
appliance manufacturer for these purposes. Failure to use the correct terminations could result in carbon
monoxide poisoning causing personal injury or loss of life.
•
The vent must extend one foot beyond the wall.
•
The vent must not exit over a public walkway or over any other area where condensate or vapor could be
hazardous.
•
The vent must discharge at least three feet above grade of the level of normal snow accumulation.
•
The vent must terminate at least four feet below, four feet horizontally from, or one foot above any
building air inlet including doors and windows.
Vertical Venting Through a Roof
•
The vent must extend upwards beyond nearby obstructions in accordance with Figures 501-2 and 501-3
(see page 9).
Venting of Multiple Units
•
Multiple EPV models must not be vented into a common duct or breeching. Vent each unit
independently in accordance with the instructions for either horizontal or vertical venting included above.
AIR INLET DUCT OPTION
WARNING: Vent terminals for the flue and inlet air must use only vent terminations as supplied by the
appliance manufacturer for these purposes. Failure to use the correct terminations could result in carbon
monoxide poisoning causing personal injury or loss of life.
Air inlet duct is defined as a means of ducting the outside combustion air to the burner for the purpose of avoiding
corrosion that can be caused by contaminants which may be contained in indoor air and/or providing sufficient
fresh air for proper combustion. If your POWER VT
boiler requires an air inlet duct, it can be connected directly to
the burner inlet cap with self-tapping screws. No additional parts are necessary.
Constructing the Air Inlet Duct
•
Use 6 inch, PVC sewer and drain pipe when constructing the combustion air duct for all POWER VT
boiler models. Single-wall galvanized may be used when PVC is not available. Care should be taken to
tape all duct joints and connections.
When Ducting Vertically Through a Roof (Figure 501-4, Page 10)
•
The duct must terminate with the UL listed vent termination provided by Riverside Hydronics.
When Ducting Horizontally Through a Wall (Figure 501-5, Page 10)
•
The duct must extend one foot beyond the wall.
•
The duct must terminate with the UL listed vent termination provided by Riverside Hydronics.
•
The duct must terminate at least three feet above grade or the level of normal snow accumulation.
Maximum Equivalent Length of Duct
•
The combustion air duct should be no more than 100 equivalent feet in length, but it may be of different
configuration. See section on vent system design for details concerning combustion air duct construction.