Lennox CSC Installation, Operating And Maintenance Manual page 12

1.- GENERAL CHARACTERISTICS
1.5.- PIPING DRAWINGS
AIR TREATMENT UNIT. EXAMPLE
Fan
DS
055/070/085
OPTION ELEMENT
(ELEMENTO OPCIONAL)
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.
• 10 •
Service valve option
Service valve option
SVL1
Filter drier
Expansion valve
Check valve Check valve
Service valve option
Service valve option
SVL3
Filter drier
Expansion valve
Check valve Check valve
CONDENSING UNIT
CSH 055/070/085
Scroll compressor
LP1
LPT1
Suction accumulator
C1
Suction accumulator (Long
distance connection option)
SVL2
Filter drier
Check valve
Scroll compressor
LP2
LPT2
Suction accumulator
C2
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
HP1 High pressure switch, circuit 1.
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
OS Outdoor temperature sensor.
Installation, Operation and Maintenance manual • CSC/CSH-MIL153E-1217-05/2018
HEAT PUMP UNITS
4-way valve
HP1 PT1
HPT1
Expansion valve
Check valve
Fan motor
4-way valve
HP2 PT2
HPT2
Expansion valve
Check valve
Fan motor
Coil
OS
Coil