12
Fig. 23 — Typical Heat Recovery System Communication Wiring
P Q
X Y
X Y
Main MDC unit
MDC unit
outdoor unit
Centralized controller
P Q
P Q
P Q
P Q
P Q
P Q
To No.1
indoor
To No.2
indoor
To No.3
indoor
To No.4
indoor
To No.1
indoor
To No.2
indoor
To outdoor
To Sub MDC
To outdoor
L1
L2
L3
L3
L3
L3
L4
L4
L5
L6
L7
L8
L9
L10
1
1
L
Indoor unit 1#
Indoor unit 2#
HA HB
HA HB
HA HB
HA HB
HA HB
HA HB
Indoor unit 3#
Indoor unit 4#
Indoor unit 5#
Indoor unit 6#
Maximum wire length:
L1+L2 ≤ 3937 ft 16 AWG, 2-Core Stranded Shield
L3 ≤ 3937 ft 16 AWG, 2-Core Stranded Shield
L4 ≤ 3937 ft 16 AWG, 2-Core Stranded Shield
L5 ≤ 3937 ft 16 AWG, 2-Core Stranded Shield
L6+L7+L8+L9 ≤ 820 ft 16-20 AWG, 2-Core Stranded Shield
L10+L11 ≤ 820 ft 16-20 AWG, 2-Core Stranded Shield
NOTE: 24 v. DC Power
(Field Supplied)
HA HB
Touch screen
wired controller
wired controller
HA HB
NOTE: Power from IDU
Summary of Contents for 40VMU012 Series
Page 19: ......
