12
34-53 08/14
Vertical Remote Air (recommended) Horizontal Remote Air (allowed)
6.5 Remote Air Consideration for Combined Remote Air Ducting
Each boiler MUST have separate intake piping. Consult factory for common air intake assistance.
7 VENTING
7.1 Venting the unit using Category I, III or IV Venting Materials
The following instructions can be used to install the VT3 using UL, ULC, ETL or CSA listed, Category I, negative
pressure, non-condensing vent materials, like type B venting or it can be installed using smaller diameter UL, ULC,
ETL or CSA listed, stainless steel, Category III, positive pressure, non-condensing venting materials. UL, ULC, ETL
or CSA listed, stainless steel, Category IV, positive pressure, condensing ready venting materials can also be used
to substitute for the Category III venting materials.
Look at the main information decal attached near the front of the unit to determine whether the appliance is for
installation utilizing Category I venting only, Category III venting only or if the appliance is for installation utilizing
Category I, III or IV venting. Follow the instructions below for the specific Category of venting selected and that
appears on the main information decal. Once the Category is selected, follow only the instructions given for that
Category.
WARNING: Venting instructions for Category I (negative vent pressure) and Category III/IV (positive vent
pressure) must not be mixed. Mixing or following instructions for a different Category can cause inadequate
venting or allow carbon monoxide to enter an occupied space, resulting in property damage, personal injury
or death.
7.2 CATEGORY I VENTING
When properly installed with UL, ULC, ETL or CSA listed Category I venting, the appliance operates with a non-
positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the
vent.
Category I venting should terminate above the roof surface and must be installed in accordance with the "Venting of
Equipment" section of the current edition of the National Fuel Gas Code, ANSI Z223.1 / NFPA 54 or, in Canada, the
“Venting Systems and Air Supply for Appliances” section of the current edition of the CAN/CSA B149.1-10
Installation Codes, or applicable provisions of the local building codes.
• Do not use the vent connection size to determine the necessary vent connector, vent or stack size. For proper
sizing use the National Fuel Gas Code “Fan-assisted” table.
• Locate unit(s) as close as possible to the vent or stack. The vent connector from the appliance vent connection
to the vertical vent or stack that terminates outside and above the building roof must be made with listed Type
“B” double wall (or equivalent), must be as direct as possible and must have no blockage or reduction in
diameter.
• Support horizontal portions of the venting system to prevent sagging. Horizontal runs must slope upwards not
less than 1/4 inch per foot (21 mm/m) from the appliance to the vent terminal. Follow manufacturer’s instructions.
• Do not attach the vent connector of any appliance vented by natural draft to any portion of a mechanical draft
system operating under positive pressure.
(40 paginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales