Opt. 2 W/Economizer Option Field Wiring Diagram - Lennox Harmony II Zone Control System Installation Instructions Manual

Option 2 − Harmony Zone Control Center Field Wiring in Economizer
Applications with CB31MV Blower Coil Unit and Lennox Heat Pump
HP3
HP2
HP1
G21V
or GAS
*K18 RELAY FIELD−PROVIDED
Figure 27
Page 26
3
K20−2
9
6
PINK
7
GRAY
4
1
YELLOW
6
9
BLUE
K18−2
3
A RED
*K18
B BLK
J3 P4
Y2
Y1
O
3
1
2
12
13
6
7