Download L H - Systemair

electrical DIAGRAM abreviations
COMPRESSOR / SAFETIES CIRCUITS
K1
:M1 compressor contactor
M2
K2
:M2 compressor contactor (1)
RV1 :Cycle reversal valve (Heat pump model)
:Compressor (2)
FT1/FT2: compressor M1/M2 thermal relay
RV2 :Cycle reversal valve (Heat pump model) (2)
KA1 :order and cutted phase controller for "SCROLL"
compressor (according to models)
RT
:Anti-frost thermostat (option)
ICT
:Indoor coil temperature sensor (option)
LP1
:Low pressure pressostat (automatic reset)
LP2
:Low pressure pressostat (automatic reset) (1)
OCT :Outdoor coil temperature sensor
OCT2: Outdoor coil temperature sensor (1)
HP1 :High pressure pressostat (automatic reset)
HP2 :High pressure pressostat (automatic reset) (1)
SM1 :Remote ON/OFF switch (not supplied)
(disconnect the shunt SHM on the circuit board)
R1
:Sump heating resistance
X
R2
:Sump heating resistance (2)
PCB : Controller board
:Terminal block
FF7 :Cut-out switch
T1
M1
Note1: depending on model.
:Compressor
: PCB’s transformer
Note 2: Only models with 2 compressors
FAN MOTORS & THEIR EQUIPMENT
MO1 :Outdoor unit fan motor. (See table 2)
FT3 :MI3 motor thermal relay or cut-out switch(1)
MO2 :Outdoor unit fan motor. (1) (See table 2)
K3
CO1 :MO1 motor condenser (1)
MI3 :Indoor unit motor
CO2 :MO2 motor condenser (1)
C3
FO1 :Safeties of motor MO1 (1) (automatic reset)
Note 1 :depending on model.
FO2 :Safeties of motor MO2 (1) (automatic reset)
all seasons kit
ACS1/ACS2 :Three phase frequency regulator
S1/S2
:Pressure transducer
KA2/KA3:
Heat pump mode signal relay (Heat
pump models)
KO1/KO2
:"ON/OFF" relay
21
:MI3 contactor (1)
:Condenser MI3 (single phase model)