Carrier 62MC, 62ME, 62MD, 62MB specifications High Voltage Low Voltage

Before performing service or maintenance operations on 62M unit, turn off power switches to unit. Multiple switches may exist. Electrical shock could cause personal injury or death.

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	LEGEND
COM	— Common
DPDT	— Dual Pole, Dual Throw Relay
ERV	— Energy Recovery Ventilator
GRD	— Ground
NC	— Normally Closed
NO	— Normally Open

WIRING LEGEND

High Voltage

Low Voltage

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(OPTIONAL)

(OPTIONAL)

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NOTES:		4.	Variable frequency drives are sensitive to the polarity of a 0 to 10 volt DC control signal. If the control
1.	When the 62M unit is used in a stand-alone application, the solid-state relay will be added to activate		source is acting properly and the voltage variance can be detected on the proper leads of the VFD,
	ERV at approximately 2 volts. CO2 sensor output signal is sent to relay. Coupled units are activated		reverse the leads and the controller will respond.
	through HVAC unit.	5.	Three-phase motor on all 62M750,950 units.
2.	Supply and Exhaust Variable Frequency Drive (VFD) terminals no. 25 and no. 2 can be used as a	6.	Color determined by primary voltage: Red — 200 vac, Orange — 230 vac, Black — 460 vac.
	4 to 20 mA power control source, if desired.	7.	0 to 10 volt and 4 to 20 mA inputs are polarity sensitive. Reverse leads if signal fails to update controller.
3.	Transformer not necessary on all 62M750,950 units.	8.	DPDT relay may be substituted. If so, pins 2, 5 and 8 will not exist.

Fig. 52 — Typical Wiring Schematic, High/Low Voltage with Variable Air Volume Option