Tbh - Electrical Heater For Dhw Boiler; H-L1-C - For Room Thermostat (High Voltage) - Ferroli OMNIA ST 3.2 Manuel D'installation, D'utilisation Et D'entretien

OMNIA ST 3.2

TBH - Electrical heater for DHW boiler

16
13
CN11
Power supply
A1
A2
TCO
ATCO

H-L1-C - For room thermostat (high 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 230VAC between C and L1 ,the unit operates in
the cooling mode.
A.2 When unit detect voltage is 230VAC between H and L1, the unit operates in
the heating mode.
A.3 When unit detect voltage is 0VAC for both side(C-L1, H-L1) the unit stop wor-
king for space heating or cooling.
A.4 When unit detect voltage is 230VAC for both side(C-L1, H-L1) the unit working
in cooling mode.
3 4
15
CN11
3 15 4
HEAT(H)
L1 COOL(C)
POWER
IN
RT1
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7
CN30
(TBH)
fig. 28 -
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7 CN30
Method A
（Mode set control）
fig. 29 -
Cod. 3541V991 - Rev. 01 - 10/2021
• 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 230VAC between H and L1, unit turns on.
B.2 When unit detect voltage is 0VAC between H and L1, unit turns off.
3
15
CN11
HEAT(H) L1
POWER
IN
RT1
• 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 230VAC between H and L1,zone1 turns on.When
unit detect voltage is 0VAC between H and L1, zone1 turns off.
C.2 When unit detect voltage is 230VAC between C and L1, zone2 turns on ac-
cording to climate temp curve. When unit detect voltage is 0V between C and L1,
zone2 turns off.
C.3 When H-L1 and C-L1 are detected as 0VAC, unit turns off.
C.4 when H-L1 and C-L1 are detected as 230VAC, both zone1 and zone2 turn on.
3 4
15
S1
CN4
L1
HEAT(H)
POWER IN
RT1
zone1
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7 CN30
Method B
（One zone control）
fig. 30 -
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN11 CN7 CN30
Method C
（Double zone control）
COOL(C)
POWER IN
RT2
zone2
fig. 31 -
EN
103