RW-SLHE Series Suction Line Heat Exchanger

Description

Nominal RW-SLHE selections should be based on system horsepower, which will provide a nominal 10ºF subcooling and a nominal 20ºF suction superheat for R-22, R-502, R-404A, R-507, R-407A, R-504, R-134A, R-407C and R-410A at 110ºF condensing and 25ºF suction. For example, for a 1-1/2 HP system, select an RW-SLHE 1-1/2. Do not select undersized models to avoid high suction pressure drops and gas whistling.

Selections based on suction and liquid line sizes are appropriate for standard low, medium and high temperature refrigeration systems provided the system HP rating closely matches the RW-SLHE selection.

Selection of oversized models will provide additional liquid subcooling and suction superheat. Oversized models are acceptable only if the suction gas temperature to the compressor is not raised above 65ºF for proper compressor performance.

Standard and custom models can be selected by Doucette to meet any performance criteria, up to 60ºF subcooling. For exacting subcooling and superheat performance please contact the factory.

Applications

(For enhanced evaporator capacity, system stability, compressor protection and oil return.)

• Supermarket Case Application
• Suction Line Heat Exchanger Cut-away
• Suction Line Heat Exchangers

• Improves Evaporator Capacity Up To 10%!

• Protects Compressor From Premature Failure

Refrigerant droplets can cause serious compressor damage. Doucette Suction Line Heat Exchangers protect the compressor by "vaporizing" droplets as they pass through the heat exchanger, greatly reducing the chance for premature compressor failure.

• Improves Expansion Valve Operation

Flucation in operating conditions such as low-ambient and low-load can cause a refrigeration system to experience expansion valve "hunting" and liquid line bubbles. Doucette's Suction Line Heat Exchangers help eliminate this problem and provide improved expansion valve operation and proper capillary performance.

• Reduces Suction Line Sweating and Improves Oil Return

Doucette Suction Line Heat Exchangers reduce line sweating and frost formation by raising the temperature in the suction piping. This diminishes water and corrosion damage to other equipment. Oil return is improved from the increase in suction gas temperature.

Features

Ordering Code

Model	Capacity (HP)	Gas Connection (Inch)	Liquid Connection (Inch)	Length (Inch)	DWP (Psig)	Weight (Lbs)
RW-SLHE 1	1	5/8 "	3/8 "	13 3/4 "	700 psig	2 lbs
RW-SLHE 1 1/2	1 1/2	7/8 "	3/8 "	14 1/2 "	700 psig	3 lbs
RW-SLHE 2	2	1 1/8 "	3/8 "	15 "	400 psig	3 lbs
RW-SLHE 1/2	1/2	1/2 "	1/4 "	11 1/2 "	500 psig	1 lbs
RW-SLHE 3/4	3/4	5/8 "	3/8 "	11 3/4 "	500 psig	2 lbs
RW-SLHE 3	3	1 1/8 "	1/2 "	15 "	700 psig	3 lbs
RW-SLHE 5	5	1 3/8 "	5/8 "	14 1/4 "	633 psig	4 lbs
RW-SLHE 7 1/2	7 1/2	1 5/8 "	5/8 "	17 "	633 psig	4 lbs
RW-SLHE 10	10	2 1/8 "	7/8 "	18 "	400 psig	8 lbs
RW-SLHE 15	15	2 1/8 "	7/8 "	25 "	400 psig	12 lbs
RW-SLHE 20	20	2 1/8 "	1 1/8 "	27 "	400 psig	13 lbs
RW-SLHE 20 HP	20	2 1/8 "	1 1/8 "	30 7/8 "	700 psig	15 lbs
RW-SLHE 25	25	2 5/8 "	1 1/8 "	28 7/8 "	450 psig	15 lbs
RW-SLHE 30/35	30	2 5/8 "	1 3/8 "	28 7/8 "	450 psig	16 lbs
RW-SLHE 40	40	3 1/8 "	1 3/8 "	28 7/8 "	450 psig	20 lbs
RW-SLHE 50	50	3 1/8 "	1 5/8 "	28 7/8 "	450 psig	20 lbs
RW-SLHE 60	60	4 1/8 "	1 5/8 "	29 7/8 "	450 psig	44 lbs
RW-SLHE 75/80	75	4 1/8 "	2 1/8 "	29 7/8 "	450 psig	45 lbs
RW-SLHE 100/125	100	5 1/8 "	2 1/8 "	30 7/8 "	360 psig	54 lbs
RW-SLHE 150	150	6 1/8 "	2 5/8 "	30 7/8 "	360 psig	55 lbs