OPERATING CONTROLS
The following controls are located on the front of the control box door, under front panel. To obtain access to operating controls, remove the unit front panel as shown on page 2. See Figure 14.
■FAN CYCLE SWITCH — (Not available on RC or RP units.) This allows the fan to operate in two modes:
CON (Continuous) — This setting allows the fan to run continuously, circulating air even when the tem- perature setting has been satisfied. This switch helps to maintain the room temperature closer to the ther- mostat setting. Use this switch position when maxi- mum comfort is desired. This is the factory default setting.
CYC (Cycle) — This setting allows the fan to cycle on and off with the compressor during heating or cooling. The fan stops when the temperature setting is satis- fied. This results in longer unit
■OUTDOOR THERMOSTAT (52CQ and 52PQ HEAT PUMP UNITS ONLY) — If the setscrew is left at the factory setting (in the heat pump position), the unit will operate in the reverse cycle heating mode. See Fig. 14. When the temperature of the outdoor coil reaches 20° F (approximately 35° F outdoor air tem- perature), the compressor will shut down. The electric heater remains on until the temperature of the out- door coil reaches 35° F (approximately 45° F outdoor air temperature); then the electric heater is shut off and the compressor is energized.
FIGURE 15 — 52P UNIT CONTROLS SHOWN
To set unit to operate in electric heat mode only, turn the setscrew to the electric heat position. See Fig. 14.
IMPORTANT: If setscrew on standard heat pump unit is set to electric heat mode operation, the com- pressor is disabled for both heating and cooling operations. If setscrew on heat pump unit with wall thermostat control is set to electric heat mode operation, the compressor will be disabled only for heating operation.
OPERATING MODES (See Figures 15
and 16.)
■OUTSIDE AIR — To bring outside air into occupied space, turn the vent handle to the full open position. See Figure 13.
■OFF — The OFF mode terminates unit operation.
■FAN— The FAN mode will circulate air in the space at high speed and at high or low speed for cooling only models.
■HIGH HEAT OR HIGH COOL — Select mode and rotate temperature knob to desired comfort level. This function provides maximum heating or cooling, and is recommended to raise or lower the room temperature quickly.
■LOW HEAT OR LOW COOL — Select mode and rotate temperature knob to desired comfort level. This function provides minimum heating or cooling with maximum dehumidification and quietest operation.
NOTE: 52C and 52P wall thermostat units have a blank plate. See Figure 16.
FIGURE 16 — 52P UNIT WITH
WALL THERMOSTAT CONTROL SHOWN
(Blank Plate)
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