Ferroli OMNIA UE 3.2 User Manual

104
EN
Cod. 3541V991 - Rev. 06 - 10/2022
OMNIA ST 3.2
HT-COM-CL - Room thermostat (Low voltage)
There are three methods for connecting the thermostat.
• Room thermostat method A (mode set control)
To activate this function set the service parameter 6.1 “Room thermostat” = 1
(mode setting) refer “9.2 Service parameters table” on page 117.
A.1 When unit detect voltage is 12VDC between CL and COM ,the unit operates
in the cooling mode.
A.2 When unit detect voltage is 12VDC between HT and COM, the unit operates
in the heating mode.
A.3 When unit detect voltage is 0VDC for both side(CL-COM, HT-COM) the unit
stop working for space heating or cooling.
A.4 When unit detect voltage is 12VDC for both side(CL-COM, HT-COM) the unit
working in cooling mode.
RT1
POWER
IN
92 03
32
25 26 27 28
31
7
11 21
9 01
18
8
7
5
4222 32
1 2
13
3
4
6
2014 15 17 1916 21
6 8 9
10
5
4 3 2
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11 CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL COM HT
EVU SG
Method A
COOL(CL)HEAT(HT)
COM
（Mode set control）
fig. 33 -
• Room thermostat method B (one zone control)
To activate this function set the service parameter 6.1 “Room thermostat” = 2 (one
zone) refer “9.2 Service parameters table” on page 117.
B.1 When unit detect voltage is 12VDC between HT and COM, unit turns on.
B.2 When unit detect voltage is 0VDC between HT and COM, unit turns off.
RT1
POWER
IN
92 03
32
25 26 27 28
31
7
11 21
9 01
18
8
7
5
4222 32
1 2
13
3
4
6
2014 15 17 1916 21
6 8 9
10
5
4 3 2
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11 CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL COM HTEVU SG
Method B
HEAT(HT) COM
（One zone control）
fig. 34 -
• Room thermostat method C (double zone control)
To activate this function set the service parameter 6.1 “Room thermostat” = 3
(double zone) refer “9.2 Service parameters table” on page 117.
C.1 When unit detect voltage is 12VDC between HT and COM ,zone1 turn
on.When unit detect voltage is 0VDC between HT and COM, zone1 turn off.
C.2 When unit detect voltage is 12VDC between CL and COM, zone2 turn on
according to climate temp curve. When unit detect voltage is 0V between CL and
COM, zone2 turn off.
C.3 When HT-COM and CL-COM are detected as 0VDC, unit turn off.
C.4 when HT-COM and CL-COM are detected as 12VDC, both zone1 and zone2
turn on.
COOL(CL)
HEAT(HT)
COM
RT1
POWER IN
RT2
POWER IN
92 03
32
25 26 27 28
31
7
11 21
9 01
18
8
7
5
4222 32
1 2
13
3
4
6
2014 15 17 1916 21
6 8 9
10
5
432
1
CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11
CN7
CN17
CN19
CN30
CN35
CN14
CN31
CN36
CN25
CN29
CN40
CN41
CL COM HTEVU SG
Method C
zone1 zone2
（
Double zone control）
fig. 35 -
NOTE
The wiring of the thermostat should correspond to the settings of the user
interface.
Power supply of machine and room thermostat must be connected to the
same Neutral Line .
Zone 2 can only operate in heating mode, When cooling mode is set on user
interface and zone1 is OFF,“CL” in zone2 closes, system still keeps ‘OFF’.
While installation, the wiring of thermostats for zone1 and zone2 must be
correct.

Ferroli OMNIA UE 3.2 Specifications

General

Brand	Ferroli
Model	OMNIA UE 3.2
Category	Air Conditioner
Language	English