Page 43
K-Control Systems
ī·īīīī¤īīī īøīīīī ī¦īīīīīīīīīī īīīīīīīīī īīīī īīīīīīīī īīīīīīīīī īīīī
the rooftop unit. Default operation requires a standard
īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī§ī§ī¦īīīī·īīīī¤īīī
can also control the unit from a zone temperature sensor.
ī·īīīī¤īīīīøīīīīī¦īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī-
sychained to the L Connection
Ā®
Network Control System.
ī©īīīīīīīīīīīīīīīæīīīīīīīīīīīīīīī¤īīīīīīīī
īīīīīīīīīīīīīīīīī
PC with Unit Controller PC software installed.
L-Indoor Air Quality (CO2) Sensor A63
The indoor air quality sensor monitors CO2 levels and
īīīīīīīī īīīī īīīīīīī īīī īīīīī¤īīī īøīīīī ī¦īīīīīīīīīīī ī·īīī ī
īīīīī
adjusts the economizer dampers according to the CO2
levels. The sensor is mounted next to the indoor thermo-
stat or in the return air duct. Refer to the indoor air qual-
ity sensor installation instructions for proper adjustment.
Wiring for the indoor air quality switch is shown on the
temperature control section (C2) wiring diagram in back
of this manual.
ī°īī§īīīīīī³īīīī²īīīīīīīī¶īīīīīīī¶īīīīīīīīīīīīīī
ī·īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
when excessive condensate collects in the drain pan. The
ī±īī¦īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī°īīīøīīīīī¦īīīīīī-
īīīīīī¤īīīīīīīīīīīīī§ī¬īīīīīŗīīīīīīīīīīīīīīīīīīīīīīīīīīīøīīīī
ī¦īīīīīīīīīīīīīīīīīīīīīó°Øīīīīīīīīīīīī¤īīīīīīīīæīīīīīīīīīīīīīīīīīīīī
īīīīīøīīīīī¦īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
and restart the unit (if the switch has closed). The Unit
Controller has a three-strike counter before the unit locks
īīīīīī·īīīīīīīīīīīīīīīøīīīīī¦īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
switch to open three times per thermostat demand. If the
īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīøīīīīī¦īīīīīīīīīīīīīīīīīīīīīīīī-
ter the switch has closed to restore unit operation.
N-Smoke Detectors A17 and A64
Photoelectric smoke detectors are a factory installed op-
tion. The smoke detectors can be installed in the supply
īīīīīīīīīīīī īī¤īīīīīīīīīīīī īīīīīīīīīīīīīī¤īīīīī īīīīīī ī
īīīīīīīī
supply and return air section. Wiring for the smoke detec-
tors are shown on the temperature control section (C2)
wiring diagram in back of this manual.
O-Factory Installed-Hot Gas Reheat (optional)
General
ī«īīīīŖīīīīµīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī-
eration. These units contain a reheat coil adjacent to and
downstream of the evaporator coil. Reheat coil solenoid
īīīīīīīīÆīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
to the reheat coil. Return air pulled across the evaporator
īīīīīīīīīīīīīīīīīīīīīīīīīīīīæīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīīīīīīīīīīīīīīī¶īīīīæīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīīīīæīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
P-Optional Cold Weather Kit (Canada only)
Electric heater is available to automatically control the
minimum temperature in the gas burner compartment.
ī«īīīīīīīīīī¦īīŖīī¤īīīīīīīīæīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīīīīīīīīīīīīīīīīīīīīī©īīīīīīīī¦īīī
The kit includes the following parts:
1 - A heater assembly is installed on the vestibule of
the heating compartment. Included in the box are
the following:
a. īīīØīīīīīīīīīīīīīīīīīīīīī«īµīīī
b. īī·īīīīīīīīīīīīīīīīīīī¶īīīīīīīīīīīīīīīīīīīīīī¶ī³ī¶ī·ī
N.C. switch which opens on a temperature drop.
The switch is wired in series with 24v power
and the combustion air blower switch. When
īīīīīīīīīīīīīīīīīīīīīīī
īīīīīīīīīīī©īīīīīīī¦īīīīīī
switch opens and the gas heat section is de-
energized. The switch automatically resets when
the heating compartment temperature reaches
īīīīīī©īīīīīīīī¦īī
c. īī·īīīīīīīīīīīīīīīīīīī¶īīīīīīīīīīīīīīīīīīīīīī¶ī³ī¶ī·ī
N.C. switch which opens on a temperature rise.
ī·īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī«īµīīīīŗīīīīīīīī
īīīīīīīīīīīīīīīīīīīī
īīīīīīīīī©īīīīīīī¦īīīīīīīīīīīīī
opens and the electric heater is de-energized.
The switch automatically resets when the heating
īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī©īīīīīīīī
C).
d. Thermostat switch (S61) is an auto-reset SPST
N.O. switch which closes on a temperature
īīīīīī ī·īīī īīīīīīī īīī īīīīīī īīī īīīīīīī īīīīī ī«īµīīī
īŗīīīīīīīīīīīīīīīīīīīīīīī
īīīīīīīīīī©īīīīīīī¦īīīīīī
switch closes and electric heater is energized.
The switch automatically opens when heating
īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī©īīīīīīī¦īī
2 - īī®īīīīīīīīīīīīīīó°Øīīīīīīīīīīīīīīīīīīīīī«īµīīīīīīīīīī
īīīīīī¶īīīīīīī¶īīīīīīīīīīīīīīīīīīīīīīīīīīīīīī®īīīī
must be installed in the control section.
3 - Wire harness is routed between the heat section
īīīīīīīīīīī īīīī īīīī īīīīī īīīīīīīī ī
īīīī ī©īīīīīī
instructions provided with kit for wire connections.
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