This manual gives the contractor guidelines for installing
the LIFEBREATH Air Handler. All national and local
codes relating to this type of equipment must be followed.
Locating The Unit
The Air Handler is designed to be installed vertically, in a
conditioned space,
where the surrounding temperature
does not fall below 50°F (10°C)
. Attic installations are not
recommended. Typically the unit is installed in a mechani-
cal area of the basement, or other partitioned mechanical
room, elsewhere in the home.
A location close to an outside wall is recommended, as the
ventilation supply and exhaust portion will need to be duct-
ed to the outside air. Sufficient clearance around the unit is
required for service of the filter, heat recovery core and
components. As a rule this unit should be installed adjacent
to the hot water heater. If this is not possible, or if the pip-
ing layout is complex, the total head pressure on the pump
should be calculated.
Ducting
The duct sizing for the furnace section can be determined
using HRAI Residential Air System Design Manual,
SMACNA, or any other industry-recognized manuals.
Note: "Combo units" normally deliver air at approx.
110°F (43°C), and therefore may require larger than nor-
mal ductwork. When installing the Air Handler as a
replacement unit on a retrofit application, always calcu-
late the size of duct that is there.
Any ductwork running through unconditioned space must
be sealed properly and insulated to prevent heat loss. All
local codes must be followed in determining the amount of
insulation needed.
Duct Connections
Penetrations from sheet metal screws used to fasten the
ductwork to the cabinet of the unit should only be placed
into the duct flange provided. This is to avoid contact and
damage of the heating/air conditioning coils and internal
wiring.
13
Installation
