York H5CE090, H3CE120, H1CE150 SUCTION LINES 1,2, Liquid Lines, REFRIGERANT-22LINE CHARGE1

					035-15407-002-B-0404
TABLE 4 - SUCTION LINES 1,2
	Nominal	Refrigerant	Type L	Refrigerant	Friction
Model				Gas
	Capacity	Flow Rate3	Copper Tubing		Loss4,5
Designation	(Tons)	(Lbs./Min.)	(Inches O.D.)	Velocity	(PSI/100 Ft.)
				(FT./Min.)
			1-1/8	2050	4.3
HCE090	7-1/2	22	1-3/8	1680	1.6
			1-5/8	1140	0.7
			1-1/8	3500	8.0
HCE120	10	30	1-3/8	2280	2.8
			1-5/8	1560	1.2
HCE150	12-1/2	37	1-3/8	2510	3.9
			1-5/8	1800	1.5

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.

2Every 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. 3Based on Refrigerant-22 at the nominal capacity of the condensing unit, a suction temperature of 40°F and a liquid temperature of 105°F.

4Although 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.

5These friction losses do not include any allowances for valves or fittings.

TABLE 5 - LIQUID LINES

Model	Nominal	Refrigerant	Type L		Pressure Drop3
	Capacity	Flow Rate1	Copper Tubing	Friction2		Vertical
Designation	(Tons)	(Lbs./Min.)	(Inches O.D.)	(PSI/100 Ft.)		Rise
						(PSI/Ft.)
HCE090	7-1/2	22.0	1/2	11.0		0.5
			5/8	3.5
HCE120	10	30	5/8	5.8		0.5
			3/4	2.3
HCE150	12-1/2	37	5/8	8.0		0.5
			3/4	3.0		0.5

1Based on Refrigerant-22 at the nominal capacity of the condensing unit, a liquid temperature of 105°F and a suction temperature of 40°F.

2These friction losses do not include any allowances for a strainer, filter-drier, solenoid valve, isolation valve or fittings.

3The 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 6 - REFRIGERANT-22 LINE CHARGE1

Liquid Line2	1/2	0.070 lb./ft.
	5/8	0.113 lb./ft.
Inches, O.D.
	3/4	0.167 lb./ft.
Suction Line2	1-1/8	0.009 lb./ft.
	1-3/8	0.013 lb./ft.
Inches, O.D.
	1-5/8	0.019 lb./ft.

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.

1Charges are based on 40°F suction temperature and a 105°F liquid temperature.

2Type “L” copper tubing.

8 Unitary Products Group