Lennox FLATA IR FLC, Installation And Operating Manual

Page: 15 / 32

15
1.- GENERAL CHARACTERISTICS
1.7.- AVAILABLE OPTIONS
ELECTRIC HEATER
Optionally, these units can contain shielded element electric
heating batteries that are mounted on the inside of the unit in
the schematic opposite.
The electric heater must get its power from the unit’s electrical
box.
MAIN SWITCH
The main switch is located on the access panel to the electrical box in such a way that the unit is disconnected
when the panel is opened.
(Refer to the size diagram on pages 7 to 10 to see the position of the electrical box access panel).
Check to make sure that the main switch is large enough to handle the current for the unit if electric heaters are
installed.
PHASE SEQUENCER (THREE-PHASE UNIT)
The phase sequencer is located in the electrical box in the outdoor section, thus assuring that the unit will not
begin operation while the phase connection of the compressor is not correct. Should this occur, then just switch
two phase connections.
ON/OFF CONDENSATION PRESSURE CONTROL (MODELS 10-12-16)
The condensation pressure control consists of a pressure switch, which starts and stops the outdoor fan regulating
the condensation temperature, thus the unit will be able to operate in the cooling cycle when the outdoor
temperature is below 19ºC.
HOT GAS BYPASS VALVE
The purpose of the BYPASS valve is to make it possible for the unit to operate at low outdoor temperatures (under
0°C), to be used in cooling-only and head-pump units.
It regulates the capacity of the compressor by injecting hot gas from the compressor discharge side to the
evaporator.
CONTROL USING A PROGRAMABLE CONTROLLER:
With the programmable controller option, the desired temperature can be programmed in the area 24 hours a day,
7 days a week.
REMOTE ROOM-TEMPERATURE SENSOR, REMOTE DUCT SENSOR
This sersors may be used in conjunction with remote controller, allowing the controller to be mounted in a room
away from the conditioned space.
-
REMOTE DUCT SENSOR: The sensor will be located in the return-air duct, detecting the air temperature of the
air being air-conditioned.
-
REMOTE ROOM-TEMPERATURE SENSOR: The sensor will be placed in the area to be air-conditioned.
FREECOOLING THERMOSTAT KIT
The Freecooling Thermostat Kit will only operate in cooling-only or heat-pump units. This is an energy saving
system that regulates the dampers doors through which outdoor air is taken in when the outdoor temperature is
lower than the area to be air-conditioned.
This kit consists of the damper, a motor, power card and a controller with specific programming, safety thermostat
for air discharge and outdoor sensor, completely factory-assembled.