KeepRite DLCCHR - Refrigerant Lines and Charging; General Refrigerant Line Sizing Guidelines

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Specifications subject to change without notice.
REFRIGERANT LINES
General refrigerant line sizing:
1. The units are shipped with a full charge of R410A refrigerant. All
charges, line sizing, and capacities are based on runs of 25 ft. (7.6
m). For runs over 25 ft. (7.6 m), review the Long−Line
Applications Units section on the following page for proper charge
adjustments.
2. Minimum refrigerant line length between the indoor and outdoor
units is 10 ft. (3 m).
3. Refrigerant lines should not be buried in the ground. If it is
necessary to bury the lines, not more than 36−in (914 mm) should
be buried. Provide a minimum 6−in (152 mm) vertical rise to the
service valves to prevent refrigerant migration.
4. Both lines must be insulated. Use a minimum of 1/2−in. (12.7
mm) thick insulation. A closed−cell insulation is recommended
in all long−line applications.
5. Special consideration should be given to isolating interconnecting
tubing from the building structure. Isolate the tubing so that
vibration or noise is not transmitted into the structure.
IMPORTANT: Both refrigerant lines must be insulated separately.
S The following maximum lengths are allowed:
Table 21—Piping Information DLFCAB / DLCCAR / DLFCHB / DLCCHR
SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K
Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60
Min. Piping Length
ft 10 10 10 10 10 10 10 10
m 3 3 3 3 3 3 3 3
Standard Piping
Length
ft 25 25 25 25 25 25 25 25
m 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5
Max. Outdoor-
Indoor Height
Difference
ft 32.8 32.8 32.8 32.8 32.8 32.8 32.8 32.8
m 10 10 10 10 10 10 10 10
Max. Piping
Length w/ No
Additional
Refrigerant
Charge
ft 25 25 25 25 25 25 25 25
m 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5
Max. Piping
Length
ft 49.2 65.6 49.2 65.6 82 82 98.4 98.4
m 15 20 15 20 25 25 30 30
Gas Pipe (size -
connection type)
in 3/8 1/2 3/8 1/2 5/8 5/8 5/8 5/8
Liquid Pipe (size
- connection
type)
in 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4
Table 22—Refrigerant Information DLFCAB / DLCCAR / DLFCHB / DLCCHR
SYSTEM SIZE 9K 12K 9K 12K 18K 24K 30K 36K
Voltage 115/1/60 115/1/60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60
Cooling
Only
Refrigerant Type -- R410A R410A R410A R410A R410A R410A R410A R410A
Charge Amount
Oz 42.3 47.6 45.9 47.6 56.4 81.1 84.66 84.7
Kg 1.2 1.35 1.3 1.35 1.6 2.3 2.4 2.4
Additional
Refrigerant
Charge
(between
Standard – Max
Piping Length)
Oz/ft 0.161 0.161 0.161 0.161 0.161 0.161 0.161 0.16
g/m 15 15 15 15 15 15 15 15
Heat
Pump
Refrigerant Type -- R410A R410A R410A R410A R410A R410A R410A R410A
Charge Amount
Oz 42.3 47.6 45.9 47.6 56.4 77.6 84.66 91.7
kg 1.2 1.35 1.3 1.35 1.6 2.2 2.4 2.6
Additional
Refrigerant
Charge
(between
Standard – Max
Piping Length)
Oz/ft 0.215 0.215 0.215 0.215 0.161 0.538 0.538 0.54
g/m 20 20 20 20 15 50 50 50