Honeywell HLEX 4.75, HLEX 8 PRODUCT DATA

Series HLEX 4.75 - 7, HLEX 8 - 11

HOT GAS BYPASS VALVES FIXED ORIFICE, ADJUSTABLE SUCTION PRESSURE LIMITATION

HLEX 4.75 - 7

HLEX 8 - 11

Application

Hot gas bypass valves series HLEX are used to adjust the compressor capacity to the actual evaporator capacity in a refrigerating plant.

The hot gas bypass valve can be installed in a bypass tube between the hot gas line and suction line. The suction pressure is downward limited by flowing hot gas from the high pressure to the low pressure side.

For plants in general refrigeration and for original equipment such as dehumidifiers, air driers, water coolers or ice-making machines.

PRODUCT DATA

Features

•Compact design

•High performance

•Hermetic construction

•Adjustable suction pressure limitation

•Solder connections

•External pressure equalisation

•Extreme durable due to stainless steel head and stainless steel diaphragm welded using protective gas

•Balanced port construction

•Fixed orifice

•Refrigerants: all CFC, HCFC, HFC,

not for ammonia

Specification

Nominal capacity	see table on page 2
Adjusting range for
suction pressure limitation	1 - 9 bar(a)
Factory setting	3.7 bar(a)
Maximum pressure PS	29 bar(a)
Maximum test pressure PF	32 bar(a) (simultanous on
	all connections)
Max. ambient temperature	100 °C

Installation

•The valves may be installed in any position.

•When soldering the valve, the valve body must not get warmer than 100 °C.

•Remove plastic cap during soldering

•Constructive modifications at the valve are not allowed.

Materials

Body	brass
Head	stainless steel, brass
Connection tubes	copper

Adjustment

One complete revolution of the adjusting screw effects an alternation of the suction pressure limitation by approx. 0.5 bar.

	Turning clockwise	=	Higher suction pressure
	Turning	=	Lower suction pressure
	counterclockwise

Copyright © 2009 Honeywell GmbH • Subject to change without notice

EN0H-1914GE23 R0709

SERIES HLEX 4.75 - 7, HLEX 8 - 11

Capacities

							Condensing		pOffset			Bypass-capacity QN (kW)
	Type			Orifice size			temperature tc				R134a		R407C		R404A
							(°C)		(bar)
						35			0.5	0.98			1.67		1.40
			4.75						0.7	1.37			2.33		1.95
						50			0.5	1.13			1.86		1.41
									0.7	1.57			2.60		1.97
						35			0.5	1.29			2.18		1.83
			5						0.7	1.79			3.04		2.55
						50			0.5	1.47			2.43		1.84
									0.7	2.05			3.39		2.57
						35			0.5	1.92			3.26		2.73
			6						0.7	2.68			4.54		3.81
						50			0.5	2.20			3.64		2.75
									0.7	3.07			5.07		3.83
						35			0.5	2.35			3.98		3.34
	HLEX		7						0.7	3.27			5.55		4.65
						50			0.5	2.69			4.44		3.36
									0.7	3.75			6.19		4.68
						35			0.5	2.66			4.52		3.79
			8						0.7	3.72			6.31		5.29
						50			0.5	3.05			5.04		3.81
									0.7	4.26			7.04		5.32
						35			0.5	3.29			5.57		4.67
			10						0.7	4.58			7.77		6.52
						50			0.5	3.76			6.22		4.70
									0.7	5.25			8.67		6.56
						35			0.5	4.50			7.63		6.40
			11						0.7	6.29			10.66		8.94
						50			0.5	5.16			8.52		6.45
									0.7	7.20			11.90		9.00
Evaporating temperature t0: 0 °C; hot gas superheat								tV2oh: 25 K

Type Code / Order Information

		HLEX			5			12 mm x 16 mm
Series
Orifice size
Solder connections ODF
(inlet x outlet)

EN0H-1914GE23 R0709

2

Honeywell GmbH • Subject to change without notice