Ht-Com-Cl - Room Thermostat (Low Voltage) - Ferroli OMNIA S 3.2 Manuel D'installation, D'utilisation Et D'entretien
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HT-COM-CL - Room thermostat (Low voltage)
There are three methods for connecting the thermostat.
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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" a pagina 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
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working in cooling mode.
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Method A
（Mode set control）
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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" a pagina 117.
B.1 When unit detect voltage is 12VDC between HT and COM, unit turns on.
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B.2 When unit detect voltage is 0VDC between HT and COM, unit turns off.
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Method B
（One zone control）
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EN
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HEAT(HT) COM
COOL(CL)
POWER
IN
RT1
fig. 32 -
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HEAT(HT)
COM
POWER
IN
RT1
fig. 33 -
Cod. 3541V941 - Rev. 00 - 09/2021
•
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" a pagina 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.
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C.4 when HT-COM and CL-COM are detected as 12VDC, both zone1 and zone2
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turn on.
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HEAT(HT)
Method C
（Double zone control）
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.
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OMNIA S 3.2
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COM
COOL(CL)
POWER IN
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zone1
zone2
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POWER IN
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