York H5CE090 User Manual
035-15407-002-B-0404
8
Unitary Products Group
NOTE: Add the operating charge of the condensing unit, the evaporator coil and
the refrigerant lines to determine the total refrigerant charge of the system.
1
Charges are based on 40°F suction temperature and a 105°F liquid temperature.
2
Type “L” copper tubing.
Model
Designation
Nominal
Capacity
(Tons)
Refrigerant
Flow Rate
3
(Lbs./Min.)
Type L
Copper Tubing
(Inches O.D.)
Refrigerant
Gas
Velocity
(FT./Min.)
Friction
Loss
4,5
(PSI/100 Ft.)
HCE090
7-1/2
22
1-1/8
1-3/8
1-5/8
2050
1680
1140
4.3
1.6
0.7
HCE120
10
30
1-1/8
1-3/8
1-5/8
3500
2280
1560
8.0
2.8
1.2
HCE150
12-1/2
37
1-3/8
1-5/8
2510
1800
3.9
1.5
TABLE 4 - SUCTION LINES
1All horizontal suction lines should be pitched at least 1 inch every 20 feet in the direction of the refrigerant flow to aid the return of oil to the compressor.
2
Every vertical suction riser greater than 3 feet in height should have a “P” trap at the bottom to facilitate the return of oil to the compressor. Use short radius fittings for these traps.
3
Based on Refrigerant-22 at the nominal capacity of the condensing unit, a suction temperature of 40°F and a liquid temperature of 105°F.
4
Although suction lines should be sized for a friction loss equivalent to a 2°F change in saturation temperature (or approximately 3 psi), sizing the lines for the proper return of oil
is more important.
5
These friction losses do not include any allowances for valves or fittings.
Model
Designation
Nominal
Capacity
(Tons)
Refrigerant
Flow Rate
1
(Lbs./Min.)
Type L
Copper Tubing
(Inches O.D.)
Pressure Drop
3
Friction
2
(PSI/100 Ft.)
Vertical
Rise
(PSI/Ft.)
HCE090
7-1/2
22.0
1/2
5/8
11.0
3.5
0.5
HCE120
10
30
5/8
3/4
5.8
2.3
0.5
HCE150
12-1/2
37
5/8
3/4
8.0
3.0
0.5
0.5
1
Based on Refrigerant-22 at the nominal capacity of the condensing unit, a liquid temperature of 105°F and a suction temperature of 40°F.
2
These friction losses do not include any allowances for a strainer, filter-drier, solenoid valve, isolation valve or fittings.
3
The total pressure drop of the liquid line for both friction and vertical rise must not exceed 40 PSI. If the pressure drop exceeds 40 PSI, the liquid refrigerant could flash before it reaches the
expansion valve. This flashing will not only cause erratic valve operation and poor system performance, but could also damage the expansion valve.
NOTE: Maximum line length for HCE150 is 150 feet.
TABLE 5 - LIQUID LINES
Liquid Line
2
Inches, O.D.
1/2
0.070 lb./ft.
5/8
0.113 lb./ft.
3/4
0.167 lb./ft.
Suction Line
2
Inches, O.D.
1-1/8
0.009 lb./ft.
1-3/8
0.013 lb./ft.
1-5/8
0.019 lb./ft.
TABLE 6 - REFRIGERANT-22 LINE CHARGE
1
1,2