Bryant AIR CONDITIONERS 564A - Manual (Page 13)

B. COOLING
On a call for cooling, the compressor contactor (C) and the IFR are
energized through the Y and G terminals of the thermostat. On
units with a compressor time-delay relay, there is a 5-minute (
±
45
sec) delay between compressor starts. Energizing the compressor
contactor supplies power to the compressor and the outdoor
(condenser) fan motor (OFM). Energizing the IFR provides power
to the IFM.
When the need for cooling has been satisfied, the OFM, compres-
sor, and IFM (FAN on AUTO) are deenergized. If the unit is
equipped with a 30-second delay, the indoor fan will remain
energized for 30 seconds after the compressor is deenergized (030
and 060 units only).
C. HEATING
If accessory electric heaters are installed, on a call for heat the
thermostat energized the W relay which energizes the electric
heaters. The IFR is energized which starts the indoor-fan motor. If
the heaters are staged, W2 is energized when the second stage of
heating is required. When the need for heating is satisfied, the
heater and IFM are deenergized.
Fig. 17—Cooling Charging Chart, 564A036 Units
C00017
°
OUTDOOR TEMP
° F ° C
115 46
45 7
55 13
65 18
75 24
95 35
105 41
85 29
Fig. 18—Cooling Charging Chart, 564A042 Units
C00018
°
OUTDOOR TEMP
° F ° C
115 46
45 7
55 13
65 18
75 24
95 35
105 41
85 29
Fig. 19—Cooling Charging Chart, 564A048 Units
C00019
°
OUTDOOR TEMP
° F ° C
115 46
45 7
55 13
65 18
75 24
95 35
105 41
85 29
→
Fig. 20—Cooling Charging Chart, 564A060 Units
C00020
°
OUTDOOR TEMP
° F ° C
115 46
125 52
45 7
55 13
65 18
75 24
95 35
105 41
85 29
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