Unit Features - Carrier 52M Performance Series Installation And Operating Instructions Manual

UNIT FEATURES CONTINUED
• Unit Configuration – There are many different
configuration possibilities, through both dipswitches
and the digital keypad, that allow you to configure
the unit for your exact application. See section on
unit configuration for more details. Following are the
configuration selections that have not previously been
mentioned:
• _F or _C – The unit can display in either _F or _C
• Indoor Temperature Sensor Biasing – Optimize
the room temperature sensor reading to your exact
application (one for cooling and another for heating)..
• Emergency Heat (for Heat Pump Only) – Disable
the compressor during heating mode operation (heat
only with Electric Heat).
• Display Setpoint OR Room Temperature - - The
unit can be configured to display the room
temperature OR setpoint only, during heating and
cooling modes. See section on unit configuration for
more details.
Series Designation
PTAC (Packaged Terminal Air Conditioner)
Performance Series
ME – Cooling with Electric Heat
MQ – Heat Pump
Electric Heater Size
U – Universal (defined by power cord)
• Limit the Setpoint Range - - The unit can be
configured to limit the controlling setpoint range. The
display will always show the complete setpoint range,
but the controlling setpoint will be limited to the
configured minimum and maximum setpointselected.
See section on unit configuration for more details.
• Energy Management – Sometimes known as
Front Desk Control, an input is provided so that the
unit can be manually disabled from a different
location. If the unit detects 24vac on this input, it will
automatically turn itself off. If no voltage is detected
on the input, the unit will run normally.
• Wall Thermostat Control – A wired wall
thermostat can be connected to the unit. If it is, the
unit must be configured to disable the keypad. See
section on wired inputs and unit configuration for
more details.
52 ME U 12
–
Fig. 3 – Catalog Number Nomenclature
5
3
– – –
Electrical Data
3 – 230/208-v, 60 Hz
4 – 265-v, 60 Hz
Cooling Capacity (nominal)
07 – 7,000 Btuh
09 – 9,000 Btuh
12 – 12,000 Btuh
15 – 15,000 Btuh
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