Carrier 50PEC09-18 Wire Low Voltage Connections, Electrical Data 50PEC Units, A50-7467tf

Table 2 — Electrical Data — 50PEC Units

50PEC			VOLTAGE	V-PH-Hz	MIN/MAX	COMPRESSOR			FAN MOTOR	TOTAL UNIT	MIN CIRCUIT	MAX
UNIT SIZE			CODE		VOLTAGE	QTY	RLA	LRA	FLA	FLA	AMPS	FUSE/HACR
			1	115-1-60	104/126	1	8.1	46.5	0.6	8.6	10.7	15
09			3	208/230-1-60	197/254	1	4.5	23.0	0.4	4.9	6.0	15
			4	265-1-60	239/292	1	3.1	24.0	0.4	3.5	4.3	15
			1	115-1-60	104/126	1	10.6	55.8	1.0	11.6	14.3	25
12			3	208/230-1-60	197/254	1	5.2	24.0	0.6	5.8	7.1	15
			4	265-1-60	239/292	1	4.2	25.0	0.4	4.6	5.7	15
15			3	208/230-1-60	197/254	1	6.1	30.0	0.8	6.9	8.4	15
			4	265-1-60	239/292	1	4.7	28.5	0.6	5.3	6.5	15
18			3	208/230-1-60	197/254	1	6.8	38.0	0.7	7.5	9.2	15
			4	265-1-60	239/292	1	6.2	29.0	0.6	6.8	8.4	15
			LEGEND
FLA	—	Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA	— Locked Rotor Amps
RLA	— Rated Load Amps

Step 5 — Wire Low Voltage Connections

WATER FREEZE PROTECTION — The Aquazone™ con- trol allows the field selection of source fluid freeze protection points through jumpers. The factory setting of jumper JW3 (FP1) is set for water at 30 F. In earth loop applications, jumper JW3 should be clipped to change the setting to 10 F when using antifreeze in colder earth loop applications. See Fig. 30.

a50-7467tf

AQUAZONE CONTROL (Complete C Control Shown)

Fig. 30 — Typical Aquazone Control Board

Jumper Locations

ACCESSORY CONNECTIONS — Terminal labeled A on the control is provided to control accessory devices such as water valves, electronic air cleaners, humidifiers, etc. This signal operates with the compressor terminal. See Fig. 31. Refer to the specific unit wiring schematic for details.

NOTE: The A terminal should only be used with 24-v signals

— not line voltage signals.

Terminal Strip

C

Typical

24 VAC Water

Valve

A

Fig. 31 — Typical Aquazone Accessory Wiring

WATER SOLENOID VALVES — An external solenoid valve(s) should be used on ground water installations to shut off flow to the unit when the compressor is not operating. A slow closing valve may be required to help reduce water hammer. Figure 31 shows typical wiring for a 24-vac external solenoid valve. Figures 32 and 33 illustrate typical slow closing water control valve wiring for Taco 500 Series and Taco ESP Series valves. Slow closing valves take approximately 60 sec. to open (very little water will flow before 45 sec.). Once fully open, an end switch allows the compressor to be energized (only on valves with end switches). Only relay or triac based electronic thermostats should be used with slow closing valves. When wired as shown, the slow closing valve will operate properly with the following notations:

1.The valve will remain open during a unit lockout.

2.The valve will draw approximately 25 to 35 VA through the “Y” signal of the thermostat.

IMPORTANT: Connecting a water solenoid valve can overheat the anticipators of electromechanical thermo- stats. Only use relay based electronic thermostats.

C Y1

a50-8441

	2	AMV
1	3	TACO VALVE
	HEATER SWITCH
C	Y1
THERMOSTAT

Fig. 32 — AMV Valve Wiring

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Fig. 33 — Taco SBV Valve Wiring

30