Ashley AF700, Owner'S Installation And Operation Manual

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8
DUCTWORK INSTALLATION
We strongly recommend that the hot air ductwork be installed by a home heating specialist. If doing the installation
yourself, before you decide which installation will best suit your needs, consult a quali fi ed heating technician and
follow his recommendations as to the safest and most ef fi cient method of installation.
This furnace can be installed in three ways, as a stand alone unit, parallel, and in series with an existing furnace.
SUPPLY AIR (HOT AIR) PLENUM
The warm-air supply duct shall be constructed of metal in accordance with NFPA 90B, 2-1.1. The plenums installed
to the furnace shall be constructed of metal in accordance with NFPA 90B, 2-1.3.
When installing this furnace the hot air plenum is to have a minimum height of 24” (610mm) if the top of the fi rst
vertical section is not fl ush with the top of the fi rst horizontal section of ductwork. If the top of the plenum is fl ush
with the top of the fi rst horizontal section of ductwork then the minium height is 15” (381mm).
RETURN AIR (FRESH AIR)
The return (fresh) air intake on the furnace is on the rear of the unit. The ductwork must be mechanically attached
to the unit or blower kit box with sheet metal screws to ensure a proper operation.
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SUPPLY AIR (HOT AIR)
DUCTWORK OUTLET SIZE
SUPPLY AIR PLENUM
MINIMUM HEIGHT OF 24”
SUPPLY AIR PLENUM WITH
MINIMUM HEIGHT OF 15”