Lennox CSC Installation, Operating And Maintenance Manual page 21

2.- INSTALLATION
2.7- REFRIGERANT CONNECTIONS
To locate the outdoor and the indoor units, refer to the following information:
OUTDOOR UNIT
2
A
2%
INDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT
2%
2
2%
OUTDOOR UNIT
2
1
2%
NOTE: The refrigerant connections are brazing
connections. Service valves can be supplied as
option if required.
- THE GAS LINE MUST BE ALWAYS INSULATED.
- THE HORIZONTAL LINES MUST BE TIPPED AT LEAST 2% TOWARD THE OUTDOOR UNIT.
- THE MAXIMUM SPEED INSIDE LINES SHOULD NOT BE MORE THAN 15 m/seg.
• 19 •
2%
POSITION A : A syphon suction must be installed at the base of the vertical of the
gas line, and syphons must be installed every 8 meters upward. The minimum speed
suction must not be below 6m/s. Maximum vertical length 16m.
1
POSITION B : Tip the lines toward the outdoor unit. Make special attention
B
to line length longer than 10m and avoid collapse on pipe lines installation.
1
L
POSITION C : Install a siphon at the base of the vertical of the gas line; no
more siphons are necessary. Maximum vertical length 16m.
INDOOR UNIT
C
A,B,C : Unit positions
L : Total length
1 = Gas line
2 = Liquid line
Installation, Operation and Maintenance manual • CSC/CSH-MIL153E-1217-05/2018