Carrier 50PTH, PTV specifications Bm Ecm

ECM INTERFACE BOARD LAYOUT

BM (ECM)

SW1

SW2

SW3

SW4

SW5

SW6

SW7

SW8

SW9

OFF ON

ECM

INTERFACE

BOARD

17

LEGEND

AL	— Alarm Relay Contacts	P1	— Field Wiring Terminal Block
ASTAT	— Aquastat	RVS	— Reversing Valve Solenoid
BM	— Blower Motor	TRANS	— Transformer
CB	— Circuit Breaker		Field Line Voltage Wiring
CC	— Compressor Contactor		Field Low Voltage Wiring
CO	— Sensor, Condensate Overflow
			Printed Circuit Trace
COMPR	— Compressor
DDC	— Direct Digital Control		Relay/Contactor Coil
DTS	— Discharge Temp Switch
ECM	— Electronically Commutated Motor		Condensate Pan
FP1	— Sensor, Water Coil Freeze Protection
FP2	— Sensor, Air Coil Freeze Protection		Solenoid Coil
HP	— High-Pressure Switch
HWG	— Hot Water Generator		Thermistor
JW1	— Jumper, Alarm
NSB	— Digital Night Setback		Ground
LOC	— Loss of Charge Pressure Switch		Wire Nut
MV	— Motorized Valve
NEC	— National Electrical Code

BM (ECM)

		J1
		Y
W	R	S1
		CFM
		SW1

O						SW2
	G					SW3
						SW4
						SW5
Y2	G					SW6
						SW7
						SW8
Y1	G					SW9
							OFF	ON
G	G	TB1				G	DEHUM
R	C	Y2 Y1 G	O	W	C	R DH AL1 A	A	AL1

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer for 208/230 v will be connected for 208 v operation. For 230 v operation, dis- connect RED lead at L1 and attach ORN lead to L1. Insulate open end of RED lead. Trans- former for 220/240 v will be connected for 220 v operation. For 240 v operation, disconnect RED lead at L1 and attach ORN lead to L1. Transformer is energy limiting or may have cir- cuit breaker.

4.FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

5.Typical Aquazone™ thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage.

6.24-v alarm signal shown. For dry alarm contact, cut AL2 dry jumper and dry contact will be available between AL1 and AL2.

7.Transformer secondary ground via Deluxe D board standoffs and screws to control box. (Ground available from top two standoffs as shown.)

8.Aquastat is field-supplied and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.

9.Place jumpers on 2 and 3, ECM board, when dehumidification mode is used.

Fig. 18 — Wiring of 50PTH,PTV,PTD026-072 Units with Deluxe D Controller, Three Phase (208/230 V)