Heatcraft LFA Quick start guide

Low Flow Unit Coolers
Technical Guide
Models LFA |Air Defrost
LFAE |Electric Defrost
LFAH |Hot Gas Defrost
LK-LFTB |October 2016
Replaes LK-LFTB APR. 2015

2
2
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
Table of Contents
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)
BH = 208-230/1/60 (PSC)
MH = 460/1/60 (PSC)
AE = 115/1/60 (EC)
BE = 208-230/1/60 (EC)
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�
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�
Nomenclature

33
Features & Benefits
Cabinet
n
Rust-free, all-aluminum white case with louvered intake
grille for attractive appearance
n
Statically and dynamically balanced fans are designed for
quiet air movement
n
All factory installed electrical components are wired to
a terminal board in the junction box making field wiring
quick and easy
n Inlet connection allows for external mounting of TXV
Coil
n
Sweat-type cooling coil connections reduce the potential
for leaks
n
Nickel-steel alloy heaters provide a positive defrost and
have long life
n
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
n
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
n
Generous coil surface helps to maintain steady room
temperature and minimize product shrinkage
n
Access port on the suction connection allows superheat
to be easily and accurately set
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�
Drain Pan
n
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
n All models use inner drain pans to reduce sweating
Motors
n
Motors are factory-wired to unit junction box for fast
installation
n
Thermal overload protected motors are resiliently
mounted inside the unit to assure minimum noise level
n
High efficiency PSC motors are optional on sizes 070
through 170� PSC motors are standard on sizes 190
through 270
n
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
n
Units available with copper fins� Air defrost units also
available with polyester coated fins or various coil
coatings options
n
Factory installed mounted components are available in
these configurations:
sPre-assembled units come with mounted TXV, liquid
line solenoid valve and room thermostat
sPre-charged units come with mounted TXV, liquid
line solenoid valve, room thermostat, and quick
connect fittings
sMounted TXV
sMounted TXV and solenoid valve
sMounted room thermostat

4
4
Model
Capacity Fan Data
10°F TD
25°F SST
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 m3h
BTUH Watts BTUH Watts BTUH Watts
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
Model
Capacity Fan Data
10°F TD
25°F SST
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 m3h
BTUH Watts BTUH Watts BTUH Watts
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
PERFORMANCE DATA
LOW PROFILE UNIT COOLER
Model LFA/LFAE/LFAH Air/Electric/Hot Gas Defrost | 50 Hz
Model LFA/LFAE/LFAH Air/Electric/Hot Gas Defrost | 60 Hz
LFA = Air Defrost
LFAE = Electric Defrost
LFAH = Hot Gas Defrost

55
Model
Shaded Pole Motor PSC Motor EC Motor
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
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
Model
Shaded Pole Motor PSC Motor EC Motor Defrost Heaters
208-230/1 208-230/1 460/1 208-230/1 Watts 208-230/1 460/1
Amps Watts Amps Watts Amps Watts Amps Watts Total Amps
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
Model
Shaded Pole Motor PSC Motor EC Motor Drain Pan Heaters
115/1 208-230/1 115/1 208-230/1 460/1 115/1 208-230/1 Watts 115/1 208-
230/1 460/1
Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts Total Amps
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
PERFORMANCE DATA
Model LFA Air Defrost
Model LFAE Electric Defrost
Model LFAH Hot Gas Defrost

6
6
Model
Part #
115V SP
(2) Req’d
230V SP
(2) Req’d
115V PSC
(2) Req’d
230V PSC
(2) Req’d
460V PSC
(2) Req’d
115V EC
(2) Req’d
230V EC
(2) Req’d
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
Model Fan Blade
(2) Req’d
Motor
Mount
(2) Req’d
Drain Pan
Defrost
Heater
(2) Req’d
Filters
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
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�
Replacement Parts
Commercial Refrigeration Parts
Part # Description
4267W
LFAH Defrost Termination / Fan Delay Thermostat
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
Dimensions
A B C D E F G
in. mm in. mm in. mm in. mm in. mm in. mm in. mm
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
DIMENSIONAL DATA
LFA = Air Defrost
LFAE = Electric Defrost
LFAH = Hot Gas Defrost
Motors
Dimensional Data For All Models

77
Model
Distributor Type No. of
Circuits
R-404A*
Nozzle
R-407A**
Nozzle
OD Length
in. cm in. cm
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
Standard Nozzle Selection
Model
Distributor Type No. of
Circuits
R-404A
Nozzle*
R-407A**
Nozzle
OD Length
in. cm in. cm
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
Model
Distributor Type No. of
Circuits
R-404A
Nozzle*
R-407A**
Nozzle
OD Length
in. cm in. cm
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
Model
Connections OD (in.) Approx. Net Weight
Inlet†Suction Hot Gas lbs. kg
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
DIMENSIONAL DATA
Model LFAE Electric Defrost
Model LFA Air Defrost
Model LFA/LFAE/LFAH AirElectric Hot Gas Defrost
Model LFAH Hot Gas Defrost
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
nLiquid temperature is not 90-100°F
nEvaporator TD is not 10°-15°F (room temperature –
saturated suction temperature)
nElectric 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!

2175 West Park Place Blvd. · Stone Mountain, GA 30087
Phone: 800.537.7775 · Fax: 770.465.5900
heatcraftrpd.com
©2016 Heatcraft Refrigeration Products LLC
Since product improvement is a continuing effort, we reserve the right to make
changes in specifications without notice.
LK-LFTB-1016 | Version 001
This manual suits for next models
2
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