Kol-Flo Low Profile
Unit Cooler
Small to Medium
Walk-ins
Coolers & Freezer
Applications
Air Defrost - 3,900 to 39,000 BTUH
Electric Defrost - 3,600 to 28,000 BTUH
Now available with EC Motors
High Efficiency / High Reliability
Features
The RDI Kol-Flo is the original low profile unit cooler that has established an industry
standard as being the all purpose design for walk-in coolers, freezers and other applications.
They feature an air draw-through design offering air and electric defrost models.
Sizes
There are 35 sizes available with 3,700 to 39,000 BTUH at
a 10° TD ranging from 740 to 4,980 cfm. One through six
fan models are available.
Housing
Rust-free, heavy gauge, textured Aluminum casing is
light weight yet durable. Each fan section is baffled to
prevent short cycling of the air. The unit is designed
to mount flush to the ceiling and meets all NSF
requirements. Slotted hangers are provided for easy
installation. Drain fittings are installed in the horizontal
position to gain more usable head-room in low ceiling
applications. The end panels now are hinged to open
up out for easy access to both the piping and electrical
ends. Expansion valves, solenoid and temp controls are
conveniently installed inside the cabinet.
Coil
Seamless Copper tubes are staggered and mechanically
expanded into corrugated Aluminum fins and heavy
gauge tube sheets to achieve maximum heat transfer
and strength. Die formed fin collars provide even fin
spacing. Fin spacings available are 4, 6, and 8 fins per
inch. Sweat connections are standard on all models.
Motors
Standard Motors are high efficiency PSC or EC motors are
available in 115V and 230V.
Fans
Heavy duty 12" Aluminum fans are balanced to provide
vibration-free operation. Our new low throw black plastic
fan guards have an improved air pattern. The optional
epoxy resin high throw fan guard moves air up to 50 feet.
Air Defrost
All models with the prefix “AM” are designed for use in
coolers of 35°F and warmer. Complete air defrost systems
for off-cycle or timed air defrost are available from RDI.
Electrical
Available in 115V, 208/230V, and 460V (see page 4). All
components are factory wired to convenient screw-type
terminal strips. A large compartment is supplied internal
to the unit for all electrical components and is easily
accessible by removing the end panel. All models are UL
& cUL listed.
Electric Defrost
Available on all models with the prefix “SE”. Designed for
use where electric heat is used to defrost. Placement of
the heaters internal to the coil allows for an extremely
rapid and efficient defrost. This arrangement enables the
heat to be conducted through the fins from the center
out for an even defrost pattern. All heaters are wired to
a terminal strip to allow a quick field change-over from
single phase to three phase, 230V to 460V and vice versa.
A lower heater is installed close to the drain pan for fast,
reliable drainage. A defrost termination thermostat (DT )
terminates the defrost cycle when the temperature is
satisfied. A heater safety thermostat is installed to prevent
heaters from overheating above 75° in case of DT failure.
All heaters are flexible and can be easily replaced within
12 inches of the end of the units. A fan delay thermostat
is supplied to allow the warm coil to cool after a defrost
cycle prior to the fans turning on. Complete electric
defrost refrigeration systems are available from RDI.
Standard Features
• HighefficiencyECfanmotors
• Factorymountedexpansionvalves,TXV,and
Solenoid valves
Optional Features
• 460voltmotorsandheaters
• CoatedAluminumfinsorCopperFins
• Bakedwhiteenamelhousing
• Epoxyresinhighthrowguardsforupto50ft.
2
RDI standard EC motors
bring the benefits inherent to unit bearing motor design to the refrigeration
Unit Cooler market.
• Largeoilresevoir
• Totallyenclosedconstruction
• Journalbearingmachinedintothecastironendbell
• Spiralgroovedshaftpumpguaranteespositiveoil
circulation
• Threadedshaftuseshublessfanblade.
Energy Savings per Motor
by Changing to More Efficient Unit Cooler Motors (based on Energy Cost of $0.10 per kWh)
Motor Change
SP to PSC 120 85 35 22 281 28 959 18 47 0.6
PSC to EC 85 47 38 22 305 31 1041 20 51 2.0
SP to EC 120 47 73 22 586 59 2000 38 97 1.3
Subtract 6% from total savings for medium temperature air defrost units that run 24 hours per day.
EC = 50 Watt Electronically Commutated motor (Standard motor)
PSC = 1/20 HP PSC motor (Optional motors available at additional cost)
SP = 1/20 HP Shaded pole motor (Optional motors)
Std Motor
Power
Watts/Mtr
Change to
Motor Power
Watts/Mtr
Reduced Power
Watts/Mtr
Run Time
Hrs/Day
Motor Energy
Savings
kWh/Yr
Motor Energy
Savings $/Yr
Reduced Box
Load
MBTU/Yr
Cond. Unit
Energy
Savings $/Rd
Yearly Savings
$ Per MTR
Pay back in Yrs.
Nomenclature
Kol-Flo
Type of Defrost
A = Air Defrost
E = Electric Defrost
Temp Range
M = Medium
L = Low
Number of fans
A M 1 8 41 A E
Fins per inch
Motor Code
E = Electronically Commutated
P = Perm. Split Capacitor
S = Shaded Pole
Voltage Code
A = 115V
D = 208-230/1/60
E = 208-230/3/60
F = 460/1/60
BTUH in hundreds
3
Air Defrost / Specifications
MODEL
NUMBER
Re-Evap 10º TD 12º TD 115V 230V 460V 115V 230V 115V 230V
AM18-41 4,100 4,900 800 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM18-53 5,300 6,400 770 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM18-66 6,600 7,900 740 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM28-76 7,600 9,100 1,460 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM28-97 9,700 11,600 1,420 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM28-106 10,600 12,700 1,540 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM28-122 12,200 14,600 1,380 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM28-134 13,400 16,100 1,480 3.8 2.0 1.1 2.0 1.0 1.8 0.90
8 FPI
AM38-160 16,000 19,200 2,310 5.7 3.0 1.6 3.0 1.5 2.7 1.35
AM38-195 19,500 23,400 2,220 5.7 3.0 1.6 3.0 1.5 2.7 1.35
AM48-212 21,200 25,400 3,080 7.6 4.0 2.2 4.0 2.0 3.6 1.80
AM48-264 26,400 31,700 2,960 7.6 4.0 2.2 4.0 2.0 3.6 1.80
AM58-275 27,500 33,000 3,850 9.5 5.0 2.7 5.0 2.5 4.5 2.25
AM68-318 31,800 38,200 4,620 11.4 6.0 3.2 6.0 3.0 5.4 2.70
AM68-390 39,000 46,800 4,440 11.4 6.0 3.2 6.0 3.0 5.4 2.70
AM16-39 3,900 4,700 830 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM16-48 4,800 5,800 800 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM16-58 5,800 7,000 780 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM26-70 7,000 8,400 1,540 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM26-87 8,700 10,400 1,500 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM26-115 11,500 13,800 1,560 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM36-145 14,500 17,400 2,400 5.7 3.0 1.6 3.0 1.5 2.7 1.35
6 FPI
AM36-170 17,000 20,400 2,340 5.7 3.0 1.6 3.0 1.5 2.7 1.35
AM46-192 19,200 23,000 3,200 7.6 4.0 2.2 4.0 2.0 3.6 1.80
AM46-230 23,000 27,600 3,120 7.6 4.0 2.2 4.0 2.0 3.6 1.80
AM56-245 24,500 29,400 4,000 9.5 5.0 2.7 5.0 2.5 4.5 2.25
AM66-295 29,500 35,400 4,800 11.4 6.0 3.2 6.0 3.0 5.4 2.70
AM66-345 34,500 41,400 4,680 11.4 6.0 3.2 6.0 3.0 5.4 2.70
AM14-42 4,200 5,000 830 1.9 1.0 0.54 1.0 0.5 0.9 0.45
AM24-84 8,400 10,100 1,660 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM24-105 10,500 12,600 1,620 3.8 2.0 1.1 2.0 1.0 1.8 0.90
AM34-130 13,000 15,600 2,490 5.7 3.0 1.6 3.0 1.5 2.7 1.35
4 FPI
AM44-170 17,000 20,400 3,320 7.6 4.0 2.2 4.0 2.0 3.6 1.80
AM54-215 21,500 25,800 4,150 9.5 5.0 2.7 5.0 2.5 4.5 2.25
AM64-255 25,500 30,600
* PSC = Permanent Split Capacitor EC = Electronically Commutated Motor
Note: All fan motors are wired for single phase supply voltage.
BTUH
Capacity @ 25º F.S.T.
CFM
4,980 11.4 6.0 3.2 6.0 3.0 5.4 2.70
SP Motor Replacement Only PSC Motor Standard EC Motor
Total Fan Motor Amps - 1 Phase
Ordering Information Required
It is vital that the information listed below is given with each evaporator order. Orders without this
information may be delayed.
(1) Model Number
(2) Type of motor (If replacement only) std is EC
(3) Voltage, frequency and phase of motors and heaters (when applicable)
(5) Evaporator temperature
4
Electric Defrost / Specifications
MODEL
NUMBER
Re-Evap
EL16-36 3,400 3,600 3,700 3,900 830 1.0 0.54 0.5 0.45 4.4 2.6 2.2 1,000
EL16-41 3,900 4,100 4,300 4,800 800 1.0 0.54 0.5 0.45 4.4 2.6 2.2 1,000
EL16-46 4,400 4,600 4,800 5,800 780 1.0 0.54 0.5 0.45 4.4 2.6 2.2 1,000
EL26-60 5,700 6,000 6,200 7,000 1,540 2.0 1.1 1.0 0.90 7.0 6.0 3.5 1,600
EL26-75 7,100 7,500 7,800 8,700 1,500 2.0 1.1 1.0 0.90 7.0 6.0 3.5 1,600
EL26-92 8,700 9,200 9,600 11,500 1,560 2.0 1.1 1.0 0.90 8.7 7.5 4.4 2,000
EL36-120 11,400 12,000 12,500 14,500 2,400 3.0 1.6 1.5 1.35 13.0 11.3 6.4 3,000
6 FPI
EL36-140 13,300 14,000 14,600 17,000 2,340 3.0 1.6 1.5 1.35 13.0 11.3 6.4 3,000
EL46-164 15,000 16,400 17,100 19,200 3,200 4.0 2.2 2.0 1.80 17.4 15.1 8.7 4,000
EL46-185 17,600 18,500 19,200 23,000 3,120 4.0 2.2 2.0 1.80 17.4 15.1 8.7 4,000
EL56-210 20,000 21,000 21,800 24,500 4,000 5.0 2.7 2.5 2.25 — 18.8 10.9 5,000
EL66-245 23,300 24,500 25,500 29,500 4,800 6.0 3.2 3.0 2.70 — 22.6 13.0 6,000
EL66-280 26,600 28,000 29,100 34,500 4,680 6.0 3.2 3.0 2.70 — 22.6 13.0 6,000
EL14-37 3,500 3,700 3,800 4,200 830 1.0 0.54 0.5 0.45 4.4 2.6 2.2 1,000
EL24-72 6,800 7,200 7,500 8,400 1,660 2.0 1.1 1.0 0.90 8.7 7.5 4.4 2,000
EL24-85 8,100 8,500 8,800 10,500 1,620 2.0 1.1 1.0 0.90 8.7 7.5 4.4 2,000
EL34-105 10,000 10,500 10,900 13,000 2,490 3.0 1.6 1.5 1.35 13.0 11.3 6.4 3,000
4 FPI
EL44-140 13,300 14,000 14,600 17,000 3,320 4.0 2.2 2.0 1.80 17.4 15.1 8.7 4,000
EL54-180 17,10 18,000 18,700 21,500 4,150 5.0 2.7 2.5 2.25 — 18.8 10.9 5,000
EL64-2150 20,400 21,500 22,400 25,500 4,980 6.0 3.2 3.0 2.70 — 22.6 13.0 6,000
(1) All fan motors are wired for single phase.
(2) For 208/230 volt models, heaters are wired as standard for single phase on 1 through 4 fan models. 5 and 6 fan models are wired 3 phase. 460 Volt models
are only available in single phase and are compatible with all 3 phase systems.
BTUH Capacity @ 10º T.D.
Evaporator Temperature
-30º -20º -10º +20º 230V 460V 1 PH 3 PH
CFM
Motor Amps
Standard
1
PSC
230V
ECM
230V
Heater Amps
208/230V
1
460V
1 PH
Watts
5
Physical Data
Models
AM EL A B C W
18-41 — EXT 1/2ODS 5/8 ODS — 2 19 — 27-1/2 43
18-53 — EXT 1/2 5/8 — 2 19 — 27-1/2 46
18-66 — EXT 1/2 5/8 — 2 19 — — 27-1/2 50
28-76 — EXT 1/2 5/8 — 2 33 — — 41-1/2 64
28-97 — EXT 1/2 7/6 — 2 33 — — 41-1/2 69
28-106 — EXT 1/2 7/8 — 2 37 — — 45-1/2 71
28-122 — EXT 1/2 7/8 — 2 33 — — 41-1/2 74
28-134 — EXT 1/2 7/8 — 2 37 — — 45-1/2 77
38-160 — EXT 1/2 1-1/8 — 2 55 — — 63-1/2 110
38-195 — EXT 1/2 1-1/8 — 2 55 — — 63-1/2 120
48-212 — EXT 1/2 1-1/8 — 3 36-1/2 36-1/2 — 81-1/2 145
48-264 — EXT 1/2 1-1/8 — 3 36-1/2 36-1/2 — 81-1/2 160
58-275 — EXT 1/2 1-1/8 — 3 54-1/2 36-1/2 — 99-1/2 230
68-318 — EXT 1/2 1-1/8 — 4 36-1/2 36 36-1/2 117-1/2 255
68-390 — EXT 1/2 1-1/8 — 4 36-1/2 36 36-1/2 117-1/2 275
16-39 16-36 EXT 1/2ODS 5/8 ODS 5/8ODS 2 19 — — 27-1/2 41
16-48 16-41 EXT 1/2 5/8 5/8 2 19 — — 27-1/2 44
1S-5S 16-46 EXT 1/2 5/8 5/8 2 19 — — 27-1/2 47
2G 70 26-60 EXT 1/2 5/8 7/8 2 33 — — 41-1/2 61
26-87 26-75 EXT 1/2 7/8 7/8 2 33 — — 41-1/2 67
26-115 26-92 EXT 1/2 7/8 7/8 2 37 — — 45-1/2 74
36-145 36-120 EXT 1/2 7/8 7/8 2 55 — — 63-1/2 105
36-170 36-140 EXT 1/2 1-1/8 1-1/8 2 55 — — 63-1/2 115
46-192 46-164 EXT 1/2 1-1/8 1-1/8 3 36-1/2 36-1/2 — 81-1/2 140
46-230 46-185 EXT 1/2 1-1/8 1-1/8 3 36-1/2 36-1/2 — 81-1/2 155
56-245 56-210 EXT 1/2 1-1/8 1-1/8 3 54-1/2 36-1/2 — 99-1/2 225
66-295 66-245 EXT 1/2 1-1/8 1-1/8 4 36-1/2 36 36-1/2 117-1/2 250
66-345 66-280 EXT 1/2 1-1/8 1-1/8 4 SRW 36 36-1/2 117-1/2 270
14-42 14-37 EXT 1/2ODS 5/8 ODS 5/8ODS 2 19 — — 27-1/2 42
24-84 24-72 EXT 1/2 7/8 7/8 2 37 — — 45-1/2 67
24-105 24-85 EXT 1/2 7/8 7/8 2 37 — — 45-1/2 72
J4-130 34-105 EXT 1/2 7/8 716 2 55 —
44-170 44-140 EXT 1/2 7/8 1-1/8 3 36-1/2 36-1/2 — 81-1/2 135
54-215 54-180 EXT 1/2 1-1/8 1-1/8 3 54-1/2 36-1/2 — 99-1/2 220
64-255 64-215 EXT 1/2 1-1/8 1-1/8 4 36-1/2 36 36-1/2 117-1/2 245
TXV
TYPE
Refrigerant Connections
All
Liquid
AM
Suction
EL
Suction
No. of
Hangers
Dimensions (Inches)
— 63-1/2 100
Ship Wt.
(lbs.)
Installation Notes:
(1) Install 12" away from back wall.
(2) Drain connection on AM and EL units are centered on drain pan.
(3) For long air throw requirements, specify high throw fan guard.
6
Electric Defrost Kits
Model Number
EL16-36 KED-10 ED-12 D-20* ED-22 ED-30 ED-32
EL16-41 KED-10 ED-12 ED-20' ED-22 ED- 30 ED-32
EL16-46 KED-10 ED-12 ED-20 " ED-22 ED-30 ED-32
EL26-60 KED-10 ED-12 ED-20* ED-22 ED-30 ED-3 2
EL26-75 KED-10 ED-12 ED-20* ED-22 ED-30 ED-3 2
EL26-92 KED-10 ED-12 ED-20* ED-22 ED-30 ED-3 2
EL36-120 KED-10 ED-12 ED-20* ED-22 ED-33 ED-3 2
EL36-140 KED-10 ED-12 ED-20* ED-22 ED-33 ED-yz
EL46-164 KED-10 ED-12 ED-23* ED-22 ED-35 ED-3 2
EL46-185 KED-10 ED-12 ED-23* ED-22 ED-35 ED-3 2
EL56-210 KED-11 ED-12 ED-23* ED-22 ED-35 ED-3 4
EL66-245 KED-11 ED-12 ED-23* ED-22 ED-35 ED-3 4
EL66-280 KED-11 ED-12 ED-23' ED-22 ED-3 5 ED-34
EL14-37 KED-10 ED-12 ED-20' ED-22 ED-3 0 ED-32
EL24-72 KED-10 ED-12 ED-20* ED-22 ED-30 ED-3 2
EL24-85 KED-10 ED-12 ED-20* ED-22 ED-30 ED-3 2
EL34-105 KED-10 ED-12 ED-20* ED-22 ED-33 ED-3 2
EL44-140 KED-10 ED-12 ED-23* ED-22 ED-35 ED-3 2
EL54-180 KED-11 ED-12 ED-23* ED-22 ED-35 ED-3 4
EL64-215 KED-11 ED-12 ED-23' ED-22 ED-3 5 ED-34
Electric defrost kits consist of components that are necessary to control the defrost cycle. The optional kits are available as a factory installed option when
ordered with a condensing unit. Not all KED-Kits are available for all condensing unit models. The contents of each kit is described below, along with the function
of each component. * - 1/2 through 3 HP models require KED-210 or KED-213.
1 Unit Cooler Per System 2 Unit Coolers Per System 3 Unit Coolers Per System
230V 460V 230V 460V 230V 460V
Electric Defrost Kits
Kit No. Timer
KED10-230 /I 1 — 1-30A — — —
KED11-230 /3 1 1 — 1-30A — —
KED12-460 /3 1 1 — 1-30A 1-25A —
1
KED210-23 0/1 1 — 1-30A — — —
1
KED213-23 0/1 1 1 — 1-50A — —
1
KED213-23 0/3 1 1 — 1-50A — —
KED20-230 /1 1 — 1-30A — — 2
KED22-460 /3 1 1 — 2-15A 1-25A 2
KED23-230 /1 1 1 — 2-25A — 2
KED23-230 /3 1 1 — 2-25A — 2
KED30-230 /1 1 — 1-30A — — 3
KED32-460 /3 1 1 — 3-10A 1-25A 3
KED33-230 /1 1 1 — 3-16A — 3
KED34-460 /3 1 1 — 3-16A 1-25A 3
KED35-230 /1 1 1 — 3-33A — 3
KED35-230 /3 1 1 — 3-33A — 3
1
For use with 2 evaporators , 1/2 through 3 HP 120-series systems ONLY!
Auxiliary
Switch
Block-Out
Relay
Defrost
Contractor
Fan
Contractor
Sequencing
Relay
Timer: Initiates the defrost cycle. Also used as a
override protection for defrost termination.
Auxiliary Switch: Is mounted on the compressor
contactor and prevents the defrost contactor from
operating whenever the compressor is energized.
Block-Out Relay: Serves the same function as auxiliary
switch. Used when defrost contactor is not required
(lower wattage single phase only).
Defrost Contactor: Carries amperage load for heaters.
Fan Contactor: Used with 460V motors or when 230V
motors are wired 3 phase.
Sequencing Relays: Provides interconnection of
multple unit coolers on a single system so that each
unit cooler is allowed to individually terminate defrost
on temperature.
7
2915 Tenn es se e Ave n or Th , PArso ns , Tn 38 36 3 • 1 -8 77 -7 59-9 01 9 • FA x 1-73 1- 847- 90 12
1/2 Through 20 HP
Complete Refrigeration Packages
•AirDefrost
•ElectricDefrost
Contact Your RDI Representive for details
Kol-Flo Low Profile Unit coolers Low Air Velocity Unit Coolers Two-Flo Space Saver Unit Coolers
RDI
Multi-Pak Condensing unit up to 20HP RDI 120 Series Condensing Units 1/2 - 6HP
SolutionS
RDI provides many of the operational solutions from Manitowoc Foodservice, a global company dedicated to bringing
value to foodservice operators by equipping them with highly individualized real-world answers that enhance menus,
service, profits and efficiency.
To learn how Manitowoc Foodservice and its leading brands can equip you, visit our global web site at
www.manitowocfoodservice.com then find the regional or local resources available to you.
©2009 Manitowoc Foodservice except where explicitly stated otherwise. All rights reserved. 4597 12/09
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