Carrier PC211 specifications Protective Safety Limits and Control Settings

Table 3 — Protective Safety Limits and Control Settings

Monitored Parameter		Limit	Applicable Comments
Temperature Sensors Out Of		–40 to 245 F (–40 to 118.3 C)	Must be outside range for 2 seconds
Range
Pressure Transducers Out Of		0.08 to 0.98 Voltage Ratio	Must be outside range for 2 seconds.
Range			Ratio = Input Voltage ÷ Voltage Refer-
			ence
Compressor Discharge Tem-		>220 F (104.4 C)	Preset, alert setting configurable
perature
Motor Winding Temperature		>220 F (104.4 C)	Preset, alert setting configurable
Bearing Temperature		>185 F (85 C)	Preset, alert setting configurable
		<33 F (for water chilling) (0.6° C)	Preset, configure chilled medium for
Evaporator Refrigerant			water (Service1 table)
		<Brine Refrigerant Trippoint (set point	Configure chilled medium for brine
Temperature
		adjustable from 0 to 40 F [–18 to 4 C]	(Service1 table). Adjust brine refrigerant
		for brine chilling)	trippoint for proper cutout
Transducer Voltage		<4.5 vdc > 5.5 vdc	Preset
Condenser Pressure — Switch		>263 ± 7 psig (1813 ± 48 kPa), reset	Preset
		at 180 ± 10 (1241 ± 69 kPa)
	— Control	>260 psig (1793 kPa) for HCFC-22;	Preset
		215 psig (1482 kPa) for HFC-134a
Oil Pressure	— Switch	Cutout <11 psid (76 kPad) ± 1.5 psd	Preset, no calibration needed
		(10.3 kPad) Cut-in >16.5 psid
		(114 kPad) ± 4 psid (27.5 kPad)
	— Control	Cutout <15 psid (103 kPad)	Preset
		Alert <18 psid (124 kPad)
Line Voltage	— High	>110% for one minute	Preset, based on transformed line volt-
			age to 24 vac rated-input to the Starter
	— Low	<90% for one minute or <85% for 3
			Management Module. Also monitored at
		seconds
			PSIO power input.
	— Single-cycle
		<50% for one cycle
		>110% for 30 seconds	Preset
Compressor Motor Load		<10% with compressor running	Preset
		>10% with compressor off	Preset