Wiring Diagrams And Operating Sequence - Lennox HP21 Unit Information

A−Field Wiring
6
6 FIELD INSTALLED JUMPERS REQUIRED
FOR TERMINAL STRIP TB1
Humidity
Control
With CCB1
Single-Speed Heat Pump
Humidity
Two-Speed Heat Pump
Control
Without CCB1
Single-Speed Heat Pump
Humidity
Two-Speed Heat Pump
Control
VII−WIRING DIAGRAMS AND OPERATION SEQUENCE
FIELD WIRING DIAGRAM HP21 WITH CB21
24VAC 18GA. MIN.
Outdoor Unit Jumpers
Required
Y1 to Y2
none
DS to Y1
DS to Y2
FIGURE 24
Page 27
THREE-PHASE
LINE VOLTAGE
FIELD WIRING
208−230/60/3
L3 L2 L1
COMPRESSOR
CONTACTOR
USE COPPER
CONDUCTOR ONLY
SINGLE-PHASE
LINE VOLTAGE
FIELD WIRING
208−230/60/1
L2 L1
COMPRESSOR
CONTACTOR
REFER TO UNIT RATING PLATE
FOR MAXIMUM CIRCUIT AMPAC-
ITY AND MAXIMUM FUSE SIZE.