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LG PAHCMR000 Installation Manual page 23

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AHU COMMUNICATIONS KIT INSTALLATION
Return Air Temperature Control
DDC Control by Modbus : Fixed T
Room
T
r
AHU
The DDC controls return air temperature (T
Communication Kit for Return air control. To control room air, the LG wired controller can be purchased optionally. A
fixed target evaporator or condensing temperature (T
Required Items
MULTI V
Single Zone
Function List
O
p
r e
O
p
r e
R
e
u t
n r
Control
D
s i
h c
o F
c r
d e
C
p a
c a
E
m
e
g r
O
p
r e
O
p
r e
R
e
u t
n r
Monitor
D
s i
h c
D
r f e
s o
E
o r r
A r
C
o
m
p
Notes
O = Applied; X = Not applied
1. LG Central controller is based on AC Smart IV and ACP IV
+ T
or T
e
r
Room
.
T
Room
Remote
Controller
(optional)
DX
Coil
T
e
) or room air temperature (T
r
) can be changed in MULTI V and Single Zone outdoor function code setting.
e
Expansion Valve
E
E
V
N
o
R t
q e
r i u
d e
Function List
Modbus Comm. type (DDC)
i t a
g n
O
n
O /
f f
i t a
n o
M
o
e d
r i A
e T
m
e p
a r
u t
e r
r a
e g
r i A
e T
m
e p
a r
u t
e r
T
e h
m r
a
O l
n
O /
f f
y t i
C
o
t n
l o r
n e
y c
t S
p o
i t a
g n
O
n
O /
f f
i t a
n o
M
o
e d
r i A
e T
m
e p
a r
u t
e r
r a
e g
r i A
e T
m
e p
a r
u t
e r
s t
t a t
s u
a l
m r
e r
s s
r o
O
n
O /
f f
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
DDC
(Field Supply)
Modbus
AHU Controller
PAHCMR000
) by transferring Modbus signal to the AHU
Room
Wired Remote Controller
O
i t p
n o
l a
O
i t p
n o
l a
LG Remote Controller
O
O
O
O
O
O
X
X
X
X
X
X
X
X
O
O
O
O
O
O
X
X
O
O
O
O
O
O
Solutions Overview
LG Central
Controller
(Optional)
Outdoor Unit
Central Controller
O
i t p
n o
l a
O
i t p
n o
l a
1
LG Central Controller
O
O
O
X
X
X
O
O
O
O
X
X
O
X
23

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