Installation check list
Configuration
System Design
Applications
Introduction
• Instaling dry contact
To control by air temperature - Heating-Only type (230V AC)
Cooling/Heating type (230V AC with Mode selection switch)
Thermostat generates "Heating ON or Heating OFF" signal according to user"s heating target tempera-
ture. Thermostat generates both "Heating ON or Heating OFF" and "Cooling ON or Cooling OFF"
signal according to user"s heating and cooling target temperature.
Power supply for Indoor
unit and communication
Connection for thermostat (230V AC)
Supporting type : Heating only or Heating/Cooling
opening or closingwater flow for FCU cooling
OUTDOOR UNIT
2WAY VALVE
(A)
THERMOSTAT
(Default : 230V AC)
1(L) 2(N)
3
L1
L2
N
L
N
L1
L2
11
12
13
14
15
16
17
18
19
20
Thermostat
(L)
(N)
(C)
(H)
THERMOSTAT
(Default : 230 V AC)
17
L
BR
18
N
BL
19
L1
WH
20
L2
BK
Power supply for Indoor
unit and communication
Connection for thermostat (230V AC)
Supporting type : Heating only or Heating/Cooling
opening or closingwater flow for FCU cooling
OUTDOOR UNIT
2WAY VALVE
(A)
THERMOSTAT
(Default : 230V AC)
1(L) 2(N)
3
L1
L2
N
L
N
L1
L2
11
12
13
14
15
16
17
18
19
20
Thermostat
(L)
(N)
(C)
(H)
THERMOSTAT
(Default : 230 V AC)
17
L
BR
18
N
BL
19
L1
WH
20
L2
BK
(L) : Live signal from PCB to thermostat
(N) : Neutral signal from PCB to thermostat
(C) : Cooling signal from thermostat to PCB
(H) : Heating signal from thermostat to PCB
• Installer setting: N/A.
• System diagram
IDU
Purpose: Configuration for supplying hot water in two different temperatures to the room for heating.
Install a separate Thermostatic valveto set up and control 2 temperatures. Generally Thermo-
static valve is to be installed where temperature is lower than main operation temperature.
• Necessary configuration and feature
Dip s/w
N/A
Keep default Check if 2 and 3 are off
Remote controller
Use the default one attached to indoor
unit
No installation required
Leaving water tempera-
ture
Set up by remote controller
1zone : Single temperature
2zone : Adjustable(by valve)
control
Control of indoor air temperature
Thermostatic
valve
A valve needs to be purchased and
installed separately.
3
rd
party scope
Installer setting
Remote controller does not need to
be set up separately.
034
035
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COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL
LG Electronics
9. System 9
