Heatcraft LFA, LFAE, LFAH Technical Manual

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Page 1

Low Flow Unit Coolers

LK-LFTB | October 2016 Replaes LK-LFTB APR. 2015

Technical Guide

Models LFA | Air Defrost

LFAE | Electric Defrost

LFAH | Hot Gas Defrost

Page 2

Table of Contents

Nomenclature ��2 Features & Benefits ��3 Performance Data

All Defrost Types ��4

Specifications

Air Defrost ��5 Electric Defrost ��5

Hot Gas Defrost ��5 Dimensional Data ��6 Replacement Parts by InterLink™ ��6 Physical Data ��7 Standard Nozzle Selection ��7

Choose the most energy-efficient motor available for evaporators�

The EC motor is an energy efficient option on Larkin Low Flow Unit Coolers� Available on all new equipment or as an easy-to-install, drop-in replacement aftermarket part from InterLink™ Commercial Refrigeration Parts� Because they are a drop-in replacement for existing shaded pole and PSC motors, installation is quick and easy� It’s a high impact, quick payback solution for reducing costs and achieving green initiatives without replacing the entire system�

Nomenclature

LFA 070 A E

Model Series Capacity Electrical Code Design Revision

LFA = Larkin Low Flow, air defrost # x 100 = BTUH A = 115/1/60

LFAE = Larkin Low Flow, electric defrost B = 208-230/1/60

LFAH = Larkin Low Flow, hot gas defrost AH = 115/1/60 (PSC)

EC motors by InterLink are up to 75% energy efficient - that’s a 51-59% increase over shaded pole motors and a 30-35% increase over permanent-split capacitor (PSC) motors� With all of this added efficiency, you can count on more energy savings and lower operational costs while taking a step in the right direction toward conserving our planet’s resources�

BH = 208-230/1/60 (PSC)

MH = 460/1/60 (PSC)

AE = 115/1/60 (EC)

BE = 208-230/1/60 (EC)

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Features & Benefits

Low Flow unit coolers are ideal for meat storage and preparation rooms, floral coolers, dough retarding and many other applications

requiring low air velocities and low sound levels� With low velocity unit coolers, high humidities can be maintained to prevent product

drying and weight loss� These units are ideal for any type of workroom where human comfort is important�

Cabinet

Rust-free, all-aluminum white case with louvered intake grille for attractive appearance

Statically and dynamically balanced fans are designed for quiet air movement

All factory installed electrical components are wired to a terminal board in the junction box making field wiring quick and easy

Inlet connection allows for external mounting of TXV

Coil

Sweat-type cooling coil connections reduce the potential for leaks

Nickel-steel alloy heaters provide a positive defrost and have long life

Electric defrost coils have a hermetically sealed defrost termination thermostat that does not require adjustment� Hot gas defrost units come with an adjustable defrost termination thermostat

Cross-fin cooling coils with corrugated aluminum fins spaced 6 FPI & 3/8” OD staggered copper tubes provide optimum heat transfer and reduce the amount of refrigerant required

Generous coil surface helps to maintain steady room temperature and minimize product shrinkage

Access port on the suction connection allows superheat to be easily and accurately set

Drain Pan

Hot gas models use inner drain pans with low-wattage electric heaters� This eliminates the braze joints and tubing associated with hot gas drain pan loops

All models use inner drain pans to reduce sweating

Motors

Motors are factory-wired to unit junction box for fast installation

Thermal overload protected motors are resiliently mounted inside the unit to assure minimum noise level

High efficiency PSC motors are optional on sizes 070 through 170� PSC motors are standard on sizes 190 through 270

EC Motors (optional) available factory-installed or as a drop-in replacement through InterLink™ Commercial Refrigeration Parts in 115/1/60 and 208-230/1/60

Options

Units available with copper fins� Air defrost units also available with polyester coated fins or various coil coatings options

Factory installed mounted components are available in these configurations:

s Pre-assembled units come with mounted TXV, liquid

line solenoid valve and room thermostat

s Pre-charged units come with mounted TXV, liquid

line solenoid valve, room thermostat, and quick connect fittings

s Mounted TXV s Mounted TXV and solenoid valve s Mounted room thermostat

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PERFORMANCE DATA

Model LFA/LFAE/LFAH Air/Electric/Hot Gas Defrost | 60 Hz

Capacity Fan Data

Model

LFA*070 7,000 2,050 10,500 3,075 14,000 4,100 2 1,200 2,040

LFA*087 8,700 2,550 13,050 3,822 17,400 5,100 2 1,200 2,040

LFA*120 11,800 3,460 17,700 5,183 23,600 6,910 2 1,300 2,210

LFA*135 12,500 3,660 18,750 5,490 25,000 7,320 2 1,300 2,210

LFA*150 15,000 4,390 22,500 6,590 30,000 8,790 2 1,900 3,230

LFA*170 16,500 4,830 24,750 7,250 33,000 9,670 2 1,900 3,230

LFA*190 18,900 5,540 28,350 8,300 37,800 11,070 2 2,400 4,080

LFA*230 22,500 6,590 33,750 9,890 45,000 13,180 2 2,700 4,590

LFA*270 26,600 7,790 39,900 11,690 53,200 15,580 2 3,200 5,440

10°F TD

25°F SST

BTUH Watts BTUH Watts BTUH Watts

6°C TD

-4°C SST

15°F TD

25°F SST

8°C TD

-4°C SST

20°F TD 25°F

SST

10°C TD

-4°C SST

No. CFM m

Model LFA/LFAE/LFAH Air/Electric/Hot Gas Defrost | 50 Hz

Capacity Fan Data

Model

LFA*070 6,390 1,870 9,588 2,810 12,780 3,740 2 1,085 1,846

LFA*087 7,950 2,330 11,917 3,490 15,900 4,660 2 1,085 1,846

LFA*120 10,780 3,150 16,162 4,730 21,560 6,320 2 1,176 1,999

LFA*135 11,420 3,350 17,123 5,020 22,840 6,690 2 1,176 1,999

LFA*150 13,700 4,010 20,546 6,020 27,400 8,030 2 1,719 2,922

LFA*170 15,070 4,410 22,601 6,620 30,140 8,830 2 1,719 2,922

LFA*190 17,260 5,060 25,888 7,580 34,520 10,110 2 2,171 3,691

LFA*230 20,550 6,020 30,819 9,030 41,100 12,040 2 2,443 4,153

LFA*270 24,290 7,120 36,433 10,670 48,580 14,230 2 2,895 4,922

LFA = Air Defrost LFAE = Electric Defrost LFAH = Hot Gas Defrost

10°F TD

25°F SST

BTUH Watts BTUH Watts BTUH Watts

6°C TD

-4°C SST

15°F TD

25°F SST

8°C TD

-4°C SST

20°F TD

25°F SST

10°C TD

-4°C SST

No. CFM m

Page 5

PERFORMANCE DATA

Model LFA Air Defrost

Shaded Pole Motor PSC Motor EC Motor

Model

LFA070 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA087 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA120 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA135 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA150 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA170 3.6 232 2.4 244 1.64 160 1.0 196 – – 1.8 57 1.0 59

LFA190 – – – – 2.80 230 1.40 230 0.8 288 5.5 316 2.8 290

LFA230 – – – – 2.80 230 1.40 230 0.8 288 5.5 316 2.8 290

LFA270 – – – – 2.80 230 1.40 230 0.8 288 5.5 316 2.8 290

115/1 208-230/1 115/1 208-230/1 460/1 115/1 208-230/1

Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts

Model LFAE Electric Defrost

Shaded Pole Motor PSC Motor EC Motor Defrost Heaters

Model

LFAE070 2.4 244 1.0 196 – – 1.0 59 2,650 11.5 –

LFAE087 2.4 244 1.0 196 – – 1.0 59 2,650 11.5 –

LFAE120 2.4 244 1.0 196 – – 1.0 59 3,850 16.7 –

LFAE135 2.4 244 1.0 196 – – 1.0 59 3,850 16.7 –

LFAE150 2.4 244 1.0 196 – – 1.0 59 3,850 16.7 –

LFAE170 2.4 244 1.0 196 – – 1.0 59 3,850 16.7 –

LFAE190 – – 1.40 230 0.8 288 2.8 290 4,770 20.7 10.4

LFAE230 – – 1.40 230 0.8 288 2.8 290 5,700 24.8 12.4

LFAE270 – – 1.40 230 0.8 288 2.8 290 5,700 24.8 12.4

208-230/1 208-230/1 460/1 208-230/1

Amps Watts Amps Watts Amps Watts Amps Watts Total Amps

Model LFAH Hot Gas Defrost

Shaded Pole Motor PSC Motor EC Motor Drain Pan Heaters

Model

LFAH070 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 660 5.8 2.9 –

LFAH087 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 660 5.8 2.9 –

LFAH120 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 960 8.4 4.2 –

LFAH135 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 960 8.4 4.2 –

LFAH150 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 960 8.4 4.2 –

LFAH170 3.6 232 2.4 244 1.64 196 1.0 196 – – 1.8 57 1.0 59 960 8.4 4.2 –

LFAH190 – – – – 2.80 230 1.4 230 .08 288 5.5 316 2.8 290 1,190 10.4 5.2 2.6

LFAH230 – – – – 2.80 230 1.4 230 .08 288 5.5 316 2.8 290 1,426 12.4 6.2 3.1

LFAH270 – – – – 2.80 230 1.4 230 .08 288 5.5 316 2.8 290 1,426 12.4 6.2 3.1

115/1 208-230/1 115/1 208-230/1 460/1 115/1 208-230/1

Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Total Amps

Watts

208-230/1 460/1

208-

115/1

Watts

230/1

460/1

Page 6

Commercial Refrigeration Parts

DIMENSIONAL DATA

LFA = Air Defrost LFAE = Electric Defrost LFAH = Hot Gas Defrost

Dimensional Data For All Models

Dimensions

Model

LFA*070 83 2108 49 1245 17 432 14 356 22 559 19-1/2 495 23-1/4 591 LFA*087 83 2108 49 1245 17 432 14 356 22 559 19-1/2 495 23-1/4 591 LFA*120 111 2819 38-1/2 978 17 432 14-1/2 368 22 559 19-1/2 495 23-1/4 591 LFA*135 111 2819 38-1/2 978 17 432 14-1/2 368 22 559 19-1/2 495 23-1/4 591 LFA*150 114 2896 38-1/2 978 18-1/2 470 16 406 22 559 19-1/2 495 23-1/4 591 LFA*170 114 2896 38-1/2 978 18-1/2 470 16 406 22 559 19-1/2 495 23-1/4 591 LFA*190 134 3404 48-1/2 1232 18-1/2 470 16-1/2 419 22 559 19-1/2 495 23-1/4 591 LFA*230 153 3886 58 1473 18-1/2 470 16-1/2 419 22 559 19-1/2 495 23-1/4 591 LFA*270 158 4013 58 1473 21 533 20 508 27 689 24-1/2 622 28-1/4 718

A B C D E F G

in. mm in. mm in. mm in. mm in. mm in. mm in. mm

Replacement Parts

Right source� Right parts� Right now�

InterLink™ is your link to a complete line of dependable and certified commercial refrigeration parts, accessories and innovative electronic controls for all Larkin equipment� At InterLink, we provide our wholesalers with a comprehensive selection of product solutions and innovative technologies for the installed customer base� And every product is built to ensure the same high performance standards with which all Heatcraft Refrigeration Products (HRP) brands are built — backed by a dedicated team to serve every customer need, delivering at the best lead times in the industry�

Dependable� Versatile� Courteous�

Finally, one simple source for all your replacement needs from a name you can trust�

For parts, please contact (800) 686-7278 or visit www�heatcraftrpd�com�

Motors

Model

LFA*070 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*087 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*120 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*135 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*150 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*170 25300101 25300201 25302601 25302501 – 25317801 25317701 LFA*190 – – 2530688 2530689 25305001 25317601 25317501 LFA*230 – – 2530688 2530689 25305001 25317601 25317501 LFA*270 – – 2530688 2530689 25305001 25317601 25317501

115V SP

(2) Req’d

230V SP

(2) Req’d

115V PSC

(2) Req’d

Part # Description

4267W 22592801 Terminal Strip 28906601 Defrost Termination / Fan Delay Thermostat

2697490 Drain Fitting: Adapter

269151011 Drain Fitting: Locknut

5469 Drain Fitting: Washer

26914901 Drain Fitting

Model

LFA*070 22900601 2316597 4040170 2470063 89900801 LFA*087 22900601 2316597 4040170 2470063 89900801 LFA*120 22900601 2316597 4040171 2470135 89900801 LFA*135 22900601 2316597 4040171 2470135 89900801 LFA*150 22900701 2316598 4040171 2470135 89900802 LFA*170 22900701 2316598 4040171 2470135 89900802 LFA*190 2291240 4000111 4040172 2470150 89900802 LFA*230 2291240 4000111 4040174 2470200 89900802 LFA*270 2291624 4000112 4040173 2470200 89900803

LFAH Defrost Termination / Fan Delay Thermostat

Fan Blade

(2) Req’d

Motor

Mount

(2) Req’d

Drain Pan

Defrost

Heater

(2) Req’d

Part #

230V PSC

(2) Req’d

460V PSC

(2) Req’d

115V EC

(2) Req’d

230V EC

(2) Req’d

Filters

Page 7

DIMENSIONAL DATA

Model LFA/LFAE/LFAH AirElectric Hot Gas Defrost

Connections OD (in.) Approx. Net Weight

Model

LFA*070 1/2 7/8 1/2 178 81 LFA*087 1/2 7/8 1/2 189 86 LFA*120 1/2 7/8 1/2 262 119 LFA*135 1/2 7/8 1/2 264 120 LFA*150 1/2 1-1/8 1/2 280 127 LFA*170 1/2 1-1/8 1/2 285 129 LFA*190 1/2 1-1/8 1/2 298 135 LFA*230 1/2 1-1/8 1/2 366 166 LFA*270 1/2 1-3/8 5/8 405 184

†

7/8" inlet on hot gas defrost models

Inlet

†

Suction Hot Gas lbs. kg

Standard Nozzle Selection

Model LFA Air Defrost

Distributor Type

Model

LFA070 3/16 0.5 24 61 2 L-1/2 L-1/3 LFA087 3/16 0.5 24 61 2 L-3/4 L-1/2 LFA120 3/16 0.5 24 61 4 L-1 L-3/4 LFA135 3/16 0.5 24 61 4 L-1 L-3/4 LFA150 3/16 0.5 24 61 4 L-1-1/2 L-3/4 LFA170 3/16 0.5 24 61 6 L-1-1/2 L-1 LFA190 3/16 0.5 24 61 4 L-1-1/2 L-1 LFA230 3/16 0.5 24 61 6 L-2 L-1-1/2 LFA270 3/16 0.5 30 76 12 L-2 L-1-1/2

OD Length

in. cm in. cm

No. of

Circuits

R-404A*

Nozzle

R-407A**

Nozzle

LAH = Air Defrost LAD = Electric Defrost LAG = Hot Gas Defrost

*Also suitable for R-507, R-502, R-134a, R-401A, R-402A, R-448A & R-449A. ** Also suitable for R-407C, R-407F, R-22

Note:

Nozzles sized for 90-100°F liquid temperature at expansion valve.

Contact Application Engineering for guidance if

Liquid temperature is not 90-100°F

Evaporator TD is not 10°-15°F (room temperature –

saturated suction temperature)

Electric defrost and hot gas models with a saturated

suction temperature of 10°F or higher

Caution: Refrigeration system will not perform

properly without correct nozzle!

Model LFAE Electric Defrost

Distributor Type

Model

LFAE070 3/16 0.5 24 61 2 L-1 L-3/4 LFAE087 3/16 0.5 24 61 2 L-1 L-3/4 LFAE120 3/16 0.5 24 61 4 L-1-1/2 L-1 LFAE135 3/16 0.5 24 61 4 L-2 L-1 LFAE150 3/16 0.5 24 61 4 L-2 L-1-1/2 LFAE170 3/16 0.5 24 61 6 L-2-1/2 L-1-1/2 LFAE190 3/16 0.5 24 61 4 L-2-1/2 L-1-1/2 LFAE230 3/16 0.5 24 61 6 L-3 L-2 LFAE270 3/16 0.5 30 76 12 L-4 L-2-1/2

OD Length

in. cm in. cm

Model LFAH Hot Gas Defrost

Distributor Type

Model

LFAH070 1/4 0.6 24 61 2 L-1 L-3/4 LFAH087 1/4 0.6 24 61 2 L-1-1/2 L-3/4 LFAH120 1/4 0.6 24 61 4 L-2 L-1 LFAH135 1/4 0.6 24 61 4 L-2 L-1-1/2 LFAH150 1/4 0.6 24 61 4 L-2-1/2 L-1-1/2 LFAH170 1/4 0.6 24 61 6 L-2-1/2 L-1-1/2 LFAH190 1/4 0.6 24 61 4 L-3 L-2 LFAH230 1/4 0.6 24 61 6 L-4 L-2 LFAH270 1/4 0.6 30 76 12 E-4 E-2-1/2

OD Length

in. cm in. cm

No. of

Circuits

No. of

Circuits

R-404A Nozzle*

R-407A**

Nozzle

R-407A**

Nozzle

Page 8

2175 West Park Place Blvd. · Stone Mountain, GA 30087 Phone: 800.537.7775 · Fax: 770.465.5900 heatcraftrpd.com

Since product improvement is a continuing effort, we reserve the right to make changes in specifications without notice.

LK-LFTB-1016 | Version 001