Lennox CSC Installation, Operating And Maintenance Manual page 13

1.- GENERAL CHARACTERISTICS
1.5.- PIPING DRAWINGS
AIR TREATMENT UNIT. EXAMPLE
DS
Fan
Coil
DS
Coil
Fan
(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.
Liquid solenoid valve (Long distance option).
SVL4
• 11 •
Service valve
Service valve
Filter
SVL1
drier
Expansion valve
Check
Check
valve valve
Service valve
112D/128D
Liquid receiver
Check valve
Service valve
SVL3
Expansion valve
Filter drier
Check Check
valve valve
CONDENSING UNIT
CSH 100
Scroll compressor
option
LP1
LPT1
C1
Scroll compressor
Suction accumulator
Suction accumulator (Long
distance connection option)
option
SVL2
Check
valve
Scroll com-
option
LP2
LPT2
pressor
Suction accumulator
C2
Suction accumulator (Long
distance connection option)
option
SVL4
Check
valve
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.
CH2
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
HP1 PT1
HPT1
4-way valve
Filter
drier
Expansion valve
Check
valve
HP2 PT2
HPT2
4-way valve
Filter
drier
Expansion valve
Check
valve
Fan motor
Coil
OS
Fan motor
Coil