Lennox CSC - Page 23

• 21 •
020 025 030 035 040 045 055 070 085 100
C1 4800 5950 6700 8650 10000 5700 6800 8600 10250 13000
C2 ------ ------ ------ ------ ------ 5700 6800 8600 10250 9200
020 025 030 035 040 045 055 070 085 100
C1 5000 6150 6900 8950 10350 5850 7000 8850 10600 13450
C2 ------ ------ ------ ------ ------ 5850 7000 8850 10600 9500
055 070 085
C1 6800 8600 10250
C2 6800 8600 10250
055 070 085
C1 7000 8850 10600
C2 7000 8850 10600
Installation, Operation and Maintenance manual • CSC/CSH-MIL153E-1217-05/2018
2.- INSTALLATION
2.7- REFRIGERANT CONNECTIONS
Charge of R-410A refrigerant (g) for 0 meters of line (Cooling only). CSC + Air T. Unit
Charge of R-410A refrigerant (g) for 0 meters of line (Heat pump). CSH + Air T. Unit
Charge of R-410A refrigerant (g) for 0 meters of line (Cooling only)
Charge of R-410A refrigerant (g) for 0 meters of line (Heat pump)
TABLE 3.1.: REFRIGERANT CHARGE
C1: Circuit 1. C2: Circuit 2.
REFRIGERANT CHARGE FOR THE SET:
EXAMPLE:
To install a CSH 030 + Air treatment unit, with 22m refrigerant line length between the Condensing unit and Air
treatment unit, the refrigerant charge must be calculated as follows:
1
.
TABLE 1 (p. 20) shows that for 22m of line length between the Air treatment unit and Condensing unit, the line sizes
are: liquid 5/8” and gas 1 1/8”.
2
.
TABLE 2 (p. 20) shows, for line sizes of 5/8”-1 1/8”, the charge per meter of line is: 177 g/m x 22m = 3894 g.
3
.
TABLE 3.1 shows charge of refrigerant for a set with 0m line length is: 6900 g.
4
.
To determine the charge of the set:
Add the charge in the refrigerant lines + the charge in the Air treatment unit and Condensing refrigerant unit.
Total charge for the set: 3894 + 6900 = 10794 g
Note: If the Condensing unit includes the factory pre-charged kit, only the weight of refrigerant per meter of line in
TABLE 2 is taken into account.
TABLE 3.2.: CHARGE OF REFRIGERANT FOR MULTI-SPLIT SYSTEM