Carrier 40UV075 - Page 24

24
Fig. 18 — 115-v ECM Motor without Controls
BLK/104
LLT
(SEE NOTE 2)
3
1
NOTE 2
2
24 VAC
RED/502
TRAN1
WHT/110
SW1
BLK/101
WHT/110
BLK/102
FU1
USE COPPER SUPPLY WIRES
115 V
L1
N
GND
BLK/100
DISC1
GRN
BLK/109
120VAC
BLK/109
WHT/111WHT/111
LOW
MED
HIGH
MAX
24Vac
SPEED BOARD
BLU/EC9
GRN
WHT
BLK
ORN/EC2
3 WIRE
POWER
CABLE
ECM
1 3
12
2 9
14
5 4 3 2 1
16 PIN
RECEPTACLE
ON MOTOR
5 PIN
RECEPTACLE
ON MOTOR
11
5
BRN
SW2
RED/EC12
RED/EC12
YEL/EC5
SEE NOTE 3
BRN/EC1
MAX
LOW
HIGH
BLK/103
LLR
3
1
FIELD CONNECTED TO REMOTE CONDENSER. LLR INSTALLED ONLY ON UNITS WITH DX COILS.
2
RED/503
RED/502
WHT
BLK
GRN
LEGEND
DISC — Disconnect Switch DX — Direct Expansion ECM — Electronically Commutated Motor ESP — External Static Pressure FU — Fuse GND — Ground LLR — DX Low Limit Switch LLT — Water Coil Low Limit Thermostat SW — Switch TRAN — Transformer
Harness Connection Connection Point Splice Splice Terminal Connection Component Tie Point Optional Wiring Factory Wiring Chassis Ground Earth Ground
NOTES:
1. Make electrical installation in accordance with job diagram, and in com-
pliance with national and local electrical codes.
2. Low limit thermostat (LLT) is installed on all units with water coils. 3. Wire YEL/EC5 factory connected to LOW. Positions MED, HIGH, MAX
are for field use with increased ESP.