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1 Vdc =
5 Vdc =
10 Vdc =
31
COMANDI
E SCHEMI ELETTRICI
LEGENDA
MC
= Morsettiera
del cablaggio
FCT
= Morsettiera
del FAN COIL
M
= Motoventilatore
Y1/Y2 = Valvola acqua
(IMPIANTO A 2 TUBI)
Y2
= Valvola acqua CALDA
o resistenza elettrica
Y1
= Valvola acqua FREDDA
= Estate - aria fredda
= Inverno - aria calda
NTC
= Sonda NTC
Q1
= Sezionatore con un polo
protetto da fusibile
(raccomandato)
T1
= Sonda aria
T3
= Sonda di minima
IN1P = Cambio
stagionale esterno
GNYE = Giallo/Verde
RD
= Rosso = Minima
OG
= Arancio = Media
BK
= Nero = Massima
BN
= Marrone
BU
= Blu
WH
= Bianco
• Impianto senza valvole
A
• Termostatazione
sul motore
• Impianto 2 tubi
(1 valvola)
B
• Termostatazione
sulla valvola
• Impianto 4 tubi
(2 valvole)
C
• Termostatazione
sulle valvole
ELECTRICAL
CONTROLS AND
WIRING DIAGRAMS
LEGEND
MC
= Wiring
terminal board
FCT
= Fan coil
terminal board
M
= Fan
Y1/Y2 = Water valve
(two tube unit)
Y2
= Hot water valve
or electrical heater
Y1
= Cold water valve
= Summer - cold air
= Winter - warm air
NTC
= NTC thermostat
Q1
= Circuit breakers
with one pole protected
by fuse (recommended)
T1
= Air probe
T3
= Low temperature
cut-out thermostat
IN1P = External season mode
switch-over
GNYE = Yellow/Green
RD
= Red = Low
OG
= Orange = Medium
BK
= Black = High
BN
= Brown
BU
= Dark blue
WH
= White
• Without valves installation
A
• Thermostatic control
on the fan
• 2-tube installation
(1 valve)
B
• Thermostatic control
on the valve
• 4-tube installation
(2 valves)
C
• Thermostatic control
on the valves
UNT-SVX20B-XX
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