8
5. Terminal connection overview
X1
Termin
al No.
Allocation
Function
Description
⚫
L
X1.1
Live
Live Terminal
External Potential: 230 V AC, max. 1
A
⚫
N
X1.2
Neutral
Neutral Terminal
⚫
3
X1.3
Comm
Communication terminal
Internal potential 0 - 75 V DC
⚫
PE
X1.4
Protective earth
Protective Earth Conductor
X2
⚫
F1
X2.1
Potential for F2
Fan Operation Signal
External Potential: max. 250 VAC 8 A
⚫
F2
X2.2
Fan contact
X3
⚫
FS1
X3.1
Potential for FS2
Float switch
(ex factory bridged)
Internal Potential: 12 V DC
⚫
FS2
X3.2
Float switch
⚫
FD1
X3.3
Potential for FD2
Control of an additional external fan
or additional external air handling
unit
Internal potential: 12 V DC
⚫
FD2
X3.4
Fan Signal
⚫
EX1
X3.5
Potential for EXCT
EXCT-Contact
(external thermostat off switch)
Internal Potential: 5 V DC
⚫
EX2
X3.6
EXCT-Contact
X4
⚫
TA1
X4.1
No polarity
Suction Temperature Sensor TA
(included)
(Room Temperature Sensor)
⚫
TA2
X4.2
No polarity
⚫
E1.1
X4.3
No polarity
Sensor E
1
/ TH
2
⚫
E1.2
X4.4
No polarity
⚫
E2.1
X4.5
No polarity
Sensor E
2
/ TH
3
⚫
E2.2
X4.6
No polarity
⚫
OP1
X4.7
12 V DC
12 V DC
12 V DC relay required for each
signal output, field supplied
⚫
OP2
X4.8
Potential of Defrost
Defrost signal output
⚫
OP3
X4.9
Potential for Thermostat Thermostat signal output
⚫
OP4
X4.10
Potential for Cool start
Cool operation signal output
⚫
OP5
X4.11
Potential for Heat start
Heat operation signal output
⚫
OP6
X4.12
Potential for Fan start
Fan (free cooling) operation signal
output
⚫
OT1
X4.13
Potential for OT2 - OT6
COM
⚫
OT2
X4.14
Heat input
Heat mode input
5 V DC 0.5mA Current input
⚫
OT3
X4.15
Cool input
Cool mode input
⚫
OT4
X4.16
Demand Input 1
LV1 demand control input
Demand control, QUIET and EXCT
inputs must be set using indoor unit
detailed settings, parameter code
0002EE, please see relevant technical
⚫
OT5
X4.17
Demand Input 2
LV2 demand control / QUIET input
