Carrier Compressor and Condensing Unit specifications Aux, Dts, Lls

			LEGEND
AUX	— Auxiliary	M1	— Evaporator Fan or
C	— Compressor Contactor		Chilled Water Pump
C1	— Compressor Contactor	M2	— Cooling Tower Pump
	(XL start and first step of PW start)	M3	— Cooling Tower Fan
C2	— Compressor Contactor	NEC	— National Electrical Code
	(PW second step)	OPS	— Oil-Pressure Switch
CH	— Crankcase Heater	POR	— Pumpout Relay
CHR	— Crankcase Heater Relay	PW	— Part Wind
CR	— Control Relay	SW	— Start-Stop-Reset Switch
DTS	— Discharge Temperature Sensor	TB	— Terminal Block
DX	— Direct Expansion	TDR	— Time Delay Relay
FU	— Fuse	TM	— Timer Motor
HPS	— High-Pressure Switch	TR	— Timer Relay
LLS	— Liquid Line Solenoid Valve	XL	— Across-the-Line
LPS	— Low-Pressure Switch

Terminal Block Connector

Unmarked Terminal

Marked Terminal

Factory Wiring

Field Control Wiring

To indicate common potential only; not to represent wiring.

Splice

NOTES:

1.Factory wiring is in compliance with NEC. Any field modifications or additions must be in compliance with all applicable codes. Use copper, copper-clad aluminum for field power supply only.

2.Field power supply wiring must be 75 C minimum.

3.Compressor thermally protected. Three-phase motors are pro- tected against primary single-phasing condition.

4.Pilot duty control must be field supplied. Minimum contact rating must be 25 va.

5.60 Hz units have 120 volt control circuit. 50 Hz units have 230 volt control circuit. A separate source of supply at the correct voltage must be field supplied supply at the through a fused disconnect

device with a maximum rating of 15 A to TB2 connections L1 (Hot Side) and L2 (Neutral).

6.Open control circuit disconnect switch for servicing only. Discon- nect must remain closed for crankcase heater to operate.

7.A transformer of the following rating may be field supplied for 60 Hz units: 350 va.

8.Transformer must be fused and grounded per applicable codes.

9.If any of the original wiring furnished must be replaced, it must be replaced with 90 C wire or its equivalent.

10.Wiring is shown for single pumpout control. Single pumpout control should not be used on direct-expansion (DX) cooler appli- cations (see lower diagram for wiring when applied with DX cooler).

Fig. 6 — Control Circuit Wiring for 06E/07E Units

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