Carrier 38VMH Series - Page 12

12
Legend
IDU - Indoor Unit
Fig. 19 — Connecting Communication Wire to Outdoor Unit Communication Terminal
P Q
X Y
X Y
Outdoor Unit Centralized controller
HA HB
P Q
P Q
P Q
P Q
P Q
wired controller
HA HB
L1
L3
L5
L6
L7
L8
L9
L10
L11
L3
L3
L3
L3
Indoor unit 1#
Indoor unit 2#
Indoor unit 4#
Indoor unit 5#
Indoor unit 6#
Indoor unit 3#
P Q
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
NOTE: Power from IDU
NOTE: 24 v. AC Power
Maximum wiring length
L1+L3< 3937 ft 18AWG, 2-Core Stranded Shield
L5 < 3937 ft 18AWG, 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