Lennox ASC Series Installation, Operating And Maintenance Manual page 21

2. INSTALLATION
2.6- REFRIGERANT CONNECTIONS
For units with 2 circuits, please be sure to connect indoor unit circuits C1 and C2 to the corresponding C1 and C2
circuits of the outdoor unit.
Note :
MODELS 100D and 120D USE DIFFERENT SIZES OF PIPE CONNECTIONS : LARGE SIZE FOR CIRCUIT 1 AND
SMALL SIZE FOR CIRCUIT 2.
TABLE 1: REFRIGERANT LINES SELECTION
REFRIGERANT LINES
0 to 30 m.
(Standard con-
nection of unit)
Total line length.
(Length refri-
gerant lines
between indoor
unit and outdoor
unit.)
30 to 65 m.
0 to 30 m.
(Standard con-
nection of unit)
Total line length.
(Length refri-
gerant lines
between indoor
unit and outdoor
unit.)
30 to 65 m.
With lines length between 40 and 65 m, long distance option must be selected.
Units are factory pre-charged with Nitrogen (N
The installer should remove the nitrogen and charge the units with the R-410A refrigerant shown in the following
tables and also the charge per meter of line shown in TABLE 2.
The unit is supplied as standard with brazed connections. A factory pre-charged kit is available as an option. If fi tted, TABLE 2 is the
only one to take into account (this option includes service valves).
TABLE 2: WEIGHT OF R-410A REFRIGERANT PER METER OF LINE
LIQUID
1/2"
5/8"
5/8"
3/4"
3/4"
7/8"
• 20 •
020S
C1 1/2"
Ø Liquid
C2 n/a
C1 7/8"
Ø Gas
C2 n/a
Max. nr of bends
6
C1 5/8"
Ø Liquid
C2 n/a
C1 1 1/8"
Ø Gas
C2 n/a
Max. nr of bends 12
070D
C1 5/8"
Ø Liquid
C2 5/8"
C1 1 3/8"
Ø Gas
C2 1 3/8"
Max. nr of bends
18
C1 3/4"
Ø Liquid
C2 3/4"
C1 1 3/8"
Ø Gas
C2 1 3/8"
Max. nr of bends 18
).
2
GAS
7/8"
1-1/8"
1-3/8"
1-3/8"
1-5/8"
1-5/8"
Installation, Operation and Maintenance manual • ASC/ASH-MIL152E-1217-01/2019
Sizes
025S 030S 035S
5/8" 5/8" 5/8"
n/a n/a n/a
1 1/8" 1 1/8" 1 3/8"
n/a n/a n/a
12 8 18
5/8" 5/8" 3/4"
n/a n/a n/a
1 1/8" 1 3/8" 1 3/8"
n/a n/a n/a
18 18 18
085D 100D 120D
5/8" 3/4" 3/4"
5/8" 5/8" 5/8"
1 3/8" 1 5/8" 1 5/8"
1 3/8" 1 3/8" 1 3/8"
12 12 12
3/4" 7/8" 7/8"
3/4" 3/4" 3/4"
1 5/8" 1 5/8" 1 5/8"
1 5/8" 1 5/8" 1 5/8"
18 12 12
g/m
108
177
182
265
271
374
040S 045D 055D
5/8" 5/8" 5/8"
n/a 5/8" 5/8"
1 3/8" 1 1/8" 1 1/8"
n/a 1 1/8" 1 1/8"
12 12 8
3/4" 5/8" 5/8"
n/a 5/8" 5/8"
1 5/8" 1 1/8" 1 3/8"
n/a 1 1/8" 1 3/8"
18 18 18
140D 200D 230D
3/4" 7/8" 7/8"
3/4" 7/8" 7/8"
1 5/8" 1 5/8" 2 1/8"
1 5/8" 1 5/8" 2 1/8"
12 12 12
7/8" n/a n/a
7/8" n/a n/a
1 5/8" n/a n/a
1 5/8" n/a n/a
12 n/a n/a
n/a: not available