11
P Q
X Y
Centralized controller
X Y
P Q
P Q
P Q
P Q
P Q
P Q
wired controller
HA HB
L1
L3
L5
L6
L7
L8
L9
L10
1
1
L
L3
L3
L3
L3
outdoor unit
Indoor unit 1#
Indoor unit 2#
Indoor unit 3#
Indoor unit 4#
Indoor unit 5#
Indoor unit 6#
P
Q
HA
HB
HA
HB
HA
HB
HA
HB
HA
HB
HA
HB
Network Resistor
Maximum wiring length
L1+L3 < 3937 ft. 18 AWG, 2-Core Stranded Shield
L5< 3937 ft. 18 AWG, 2-Core Stranded Shield
L6+L7+L8+L9< 820 ft. 18 AWG, 2-Core Stranded Shield
L10+L11 < 820 ft. 18 AWG, 2-Core Stranded Shield
HA HB
Touch screen
wired controller
Note: 24v DC Power
Note: Power from IDU
Fig. 13 — Typical Communication Wiring of Heat Pump System
