Manual
2100-369E
Page
8 of 18
FIGURE 2
FRESH AIR DAMPER ASSEMBLY
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in the
service panel.
If the unit is equipped with the fresh air damper
assembly, the assembly is shipped already attached to the
unit. The damper blade is locked in the closed position.
To allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 2.
All capacity, efficiency and cost of operation information
as required for Department of Energy “Energyguide” Fact
Sheets is based upon the fresh air blank-off plate in place
and is recommended for maximum energy efficiency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN
A plastic drain hose extends from the drain pan at the top
of the unit down to the unit base. There are openings in
the unit base for the drain hose to pass through. In the
event the drain hose is connected to a drain system of
some type, it must be an open or vented type system to
assure proper drainage.
LOW VOLTAGE CONNECTIONS
These units use a grounded 24 volt AC low voltage
circuit.
The
"R"
terminal is the
hot
terminal and the
"C"
terminal
is
grounded
.
"G"
terminal is the
fan input
.
"Y"
terminal is the
compressor input for cooling
.
"W1"
terminal is the
1st stage electric heat
. The
reversing valve must be energized for heating mode.
"W2"
terminal is
second stage heat
(if equipped).
"F"
terminal is the
ventilation input
. This terminal
energizes any factory installed ventilation option.
LOW VOLTAGE CONNECTIONS
FOR DDC CONTROL
Fan Only
Energize G
Cooling Mode
Energize Y, G
1st Stage Heating
Energize W1
2nd Stage Heating
Energize W1, W2
(if employed)
Ventilation
Energize G, F
