Carrier 62MB, 62ME, 62MC, 62MD specifications Typical Wiring Schematic, High Voltage

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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.

NOTES:

1.Transformer for ERV wheel only used on 460-v, 575-v, 115-v ERV units.

2.On single-phase ERV units the L3 and T3 terminals on supply blower contactor and exhaust blower contactor are not used.

3.Overload thermal protection only used on 62M330-640 units with 5 hp and 71/2 hp motors.

4.Red wire not used on 115-v, 208/230-v single-phase units.

5.Wire color determined by primary voltage and transformer type used.

6.On 115-v units, L2 becomes neutral. On 208/230-v single-phase units, L3 does not exist.

7.On units with total fusing greater than 30 amps, when pre-heater is installed and fused disconnect option is selected, fusing will be separated. ERV and pre-heater will have separate fusing.

8.DPDT relay may be substituted. If so, pins 2, 5 and 8 will not exist.

9.Follow all local and other applicable codes.

10.Only qualified electrical contractors should install or service these ERV units.

11.For electrical characteristics (FLA, MCA) refer to charts in this booklet.

12.This diagram is for constant volume units.

	LEGEND
3PDT	— Three Pole, Dual Throw Relay	FLA	— Full Load Amps
DPDT	— Dual Pole, Dual Throw Relay	GRD — Ground
ERV	— Energy Recovery Ventilator	MCA — Minimum Circuit Amps
FIOP	— Factory-Installed Option	OTP	— Overload Thermal Protection

Fig. 50 — Typical Wiring Schematic, High Voltage