Lennox CSC Installation, Operating And Maintenance Manual page 11

1.- GENERAL CHARACTERISTICS
1.5.- PIPING DRAWINGS
AIR TREATMENT UNIT. EXAMPLE
DS
Fan
Coil
Expansion valve
(ELEMENTO OPCIONAL)
OPTION ELEMENT
AIR TREATMENT UNIT. EXAMPLE
Fan
DS
045
Expansion valve
(ELEMENTO OPCIONAL)
OPTION ELEMENT
Pressure gauge. (5/16" to be fi tted by the installer).
Discharge sensor.
DS
Liquid solenoid valve (Long distance option).
SVL1
To be connected by the installer in the air treatment unit.
Liquid solenoid valve (Long distance option).
SVL2
Liquid solenoid valve (Long distance option).
SVL3
To be connected by the installer in the air treatment unit.
• 9 •
C1
SVL1
Filter drier
Check valve Check valve
Service valve option
C1
Service valve option
SVL1
Filter drier
Expansion valve
Check valve Check valve
Service valve option
C2
Service valve option
SVL3
Filter drier
Check valve Check valve
CONDENSING UNIT
CSH 020/025/030/035/040
Service valve
Scroll compressor
option
LP1
LPT1
Suction accumulator
Suction accumulator
(Remote connection option)
Service valve
option
SVL2
Check valve
CONDENSING UNIT
CSH 045
Scroll compressor
LP1
LPT1
Suction accumulator
Suction accumulator (Long
distance connection option)
SVL2
Filter drier
Check valve
Scroll compressor
LPT2 LP2
Suction accumulator
Suction accumulator (Long
distance connection option)
SVL4
Filter drier
Check valve
Liquid solenoid valve (Long distance option).
SVL4
Low pressure transducer, circuit 1.
LPT1
Low pressure transducer, circuit 2.
LPT2
High pressure switch, circuit 1.
HP1
High pressure switch, circuit 2.
HP2
Crank case heater.
CH1
Crank case heater.
CH3
High pressure transducer, circuit 1.
HPT1
High pressure transducer, circuit 2.
HPT2
Outdoor temperature sensor.
OS
Installation, Operation and Maintenance manual • CSC/CSH-MIL153E-1217-05/2018
HEAT PUMP UNITS
4-way valve
HP1
PT1
HPT1
Filter drier
Expansion valve
Check valve
4-way valve
HP1 PT1
HPT1
Expansion valve
Check valve
4-way valve
HP2 PT2
HPT2
Expansion valve
Check valve
Fan motor
Coil
OS
Coil
Fan motor
OS