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MK/MV SeriesPRODUCT COOLERS

Technical Bulletin: MKMV_004_071119

Products that provide lasting solutions.

MK/MV SERIES UNIT COOLERS

Specifications subject to change without notice.

MK/MV Series Unit Coolers

Medium Profile Unit Coolers for Medium Size Coolers and Freezers


Specifications subject to change without notice.1

MK SERIES –

Specially designed for walk-in coolers with ceiling heights of 10 to 14 feet that require high airflow.

Standard Features

n Ruggedly constructed cabinets are easily installed from ceilings or on hanger rods.

n Wide capacity range.

n Air defrost for medium temperature rooms.

n Electric or Hot Gas defrost for medium and low temperature rooms.

n 4, 6, and 8 fins per inch spacing.

n Aluminum drain pan and cabinet.

n Coated, corrosion-proof wire fan guards.

n Compartmented fan sections.

n EC motors available 115V or 230V.

n Schraeder valve for easy super heat adjustment.

Optional Features

n 2, 3, and 4 fan units may be wired as three-phase.

n Electric defrost heater available in 230V single- or three-phase and 460V three-phase.

n Swept wing low noise fan blade.

n Variable speed dual voltage EC motor in 115V or 208-230V.

n Totally enclosed, lifetime lubricated PSC motor for 460V or other voltages when applied outside the USA.

Optional Accessories

n Long Air-Throw Adapters*

n Room Thermostat*

n TEV Thermostatic Expansion Valve**

n LLSV Liquid Line Solenoid Valve**

n SLHX Suction Liquid Heat Exchanger*

* Shipped Loose

**Factory Mounted or Shipped Loose

MV SERIES –

Specially designed to deliver low temperature air at extra-high velocity.

Standard Features

n Ruggedly constructed cabinets are easily installed from ceilings or on hanger rods.

n Wide capacity range.

n Electric defrost for low temperature rooms.

n 4 and 6 fins per inch spacing.

n Aluminum drain pan and cabinet.

n Coated, corrosion-proof wire fan guards.

n Compartmented fan sections.

n EC motors available in 115V or 230V.

n Schraeder valve for easy super heat adjustment.

Optional Features

n 2, 3, and 4 fan units may be wired as three-phase.

n Electric defrost heater available in 230V single- or three-phase and 460V three-phase.

n Variable speed dual voltage EC motor in 115V or 208-230V.

n Totally enclosed, lifetime lubricated PSC motor for 460V or other voltages when applied outside the USA.

Optional Accessories

n Long Air-Throw Adapters*

n Room Thermostat*

n TEV Thermostatic Expansion Valve**

n LLSV Liquid Line Solenoid Valve**

n SLHX Suction Liquid Heat Exchanger*

* Shipped Loose

**Factory Mounted or Shipped Loose


Ordering Information



Specify When Ordering All Models

n Complete model number.

n Refrigerant R404A, R407A, R407C, R407F, R507, and R448A / R449A.

n Room temperature.

n Saturated suction temperature.

n Electric service: Motors-Heaters-Control.

n Optional features.

n Optional accessories.

Model Key

Heater Voltage

A = 208-230/1/60B = 115/1/60K = 208-230/3/60M = 460/3/60

Unit Type

MK = Medium Pr

1, 2, 3, 4

ofileMV = High Velocity

Medium Profile

Fin Spacing

4, 6, 8 FPI

Number of Fans

Type of Defrost

A = Air DefrostB = Brine / Glysol

E = Electric Defrost with Electric Pan HeatG = 3 Pipe Hot Gas with Gas Pan HeatH = 3 Pipe Hot Gas with Electric Pan HeatK = 2 Pipe Kool Gas with Gas Pan HeatP = 2 Pipe Kool Gas with Electric Pan HeatR = Heat Reclaim

Motor Type

E = EC Motors V = Variable Speed EC B = PSC Motors (5)

BTU/h in Hundreds (00)

Motor Voltage

A = 208-230/1/60B = 115/1/60

H = 460/1/60 (2)K = 208-230/3/60 (1)

M = 460/3/60 (3)

2 6 E - 152 - B A AMK

Note:

(1) Single-phase motors wired for three-phase operation. Not available on single fan units.(2) 460V motors are Motor Type PSC only.(3) Single-phase motors wired for three-phase operation. Not available on single fan units. 460V motors are Motor Type PSC only.(4) Available on H&P gas defrost options for Drain Pan Heater only.(5) PSC motors are allowed as 460V only in the USA.


Air Defrost Medium Profile



SHIPPINGWGT.(LBS)115125130115125130115125130225240215225240215225240350330350330350470470470

MODELMK14A-68MK14A-94MK14A-121MK16A-86MK16A-118MK16A-145MK18A-98MK18A-133MK18A-160MK24A-188MK24A-242MK26A-172MK26A-236MK26A-290MK28A-196MK28A-266MK28A-320MK34A-363MK36A-354MK36A-435MK38A-393MK38A-480MK44A-484MK46A-580MK48A-640

@ 10°F TD6,8009,400

12,1008,600

11,80014,5009,800

13,30016,00018,80024,20017,20023,60029,00019,60026,60032,00036,30035,40043,50039,30048,00048,40058,00064,000

@ 15°F TD10,20014,10018,15012,90017,70021,75014,70019,95024,00028,20036,30025,80035,40043,50029,40039,90048,00054,45053,10065,25058,95072,00072,60087,00096,000

AIRFLOW(CFM)3,2453,0602,9602,9852,8152,7252,8602,7102,6256,1205,9205,9705,6305,4505,7205,4205,2508,8808,4458,1758,1307,875

11,84010,90010,500

L W H38.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7538.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7563.00 19.00 26.7592.00 19.00 26.7592.00 19.00 26.7592.00 19.00 26.7592.00 19.00 26.7592.00 19.00 26.75119.00 19.00 26.75119.00 19.00 26.75119.00 19.00 26.75

MEDIUM TEMPERATURE

DIMENSIONS (IN)CAPACITY (BTUH)

Capacity Ratings are based on sensible heat removal with a TEV fed, medium frosted coil when:- SST (saturated suction temp.) is above -20°F. Derate 10% for -30%°F SST.- Medium temp. selection – use 10 to 15°F TD. Low temp. selection – use 8 to 12°F TD. (TD is the the temp. difference between room and SST.)- Derate 12% for 50 Hertz (0.88 multiplier) or increase TD to compensate for lower fan RPM – use 11.4°F for 10°F TD or 13.6°F for 12°F for TD.

REFRIGCHARGE (LBS)

2342342345645645687878111111

LIQUIDODS1/21/21/21/21/21/21/21/21/21/21/21/21/21/21/21/25/85/85/85/85/85/85/85/85/8

SUCTIONODS7/87/87/87/87/8

1-1/87/87/8

1-1/81-1/81-1/81-1/81-1/81-5/81-1/81-5/81-5/81-5/81-5/81-5/81-5/81-5/81-5/81-5/81-5/8

REFRIGERATION CONNECTIONS

Capacity Ratings are based on sensible heat removal with a TEV fed, medium frosted coil when: - SST (saturated suction temp.) is above -20°F. Derate 10% for -30%°F SST.

- - Medium temp. selection – use 10 to 15°F TD. Low temp. selection – use 8 to 12°F TD. (TD is the the temp. difference between room and SST.)- - Derate 12% for 50 Hertz (0.88 multiplier) or increase TD to compensate for lower fan RPM – use 11.4°F for 10°F TD or 13.6°F for 12°F for TD.

- As of September 2019, Air Defrost models will be a swept-wing fan blade design. Capacity and CFM not affected by this change.


Electric Defrost Medium Profile



MEDIUM / LOW TEMPERATURE

MODEL

MK14E-60MK14E-82MK14E-105MK16E-76MK16E-103MK16E-127MK24E-120MK24E-164MK24E-210MK26E-152MK26E-206MK26E-254MK34E-246MK34E-315MK36E-309MK36E-381MK44E-420MK46E-508

MV14E-73MV14E-100MV14E-128MV16E-93MV16E-126MV16E-155MV24E-146MV24E-200MV24E-256MV26E-186MV26E-252MV26E-310MV34E-300MV34E-384MV36E-378MV36E-465MV44E-512MV46E-620

SHIPPINGWGT. (LBS)

115125130115125130215225240215225240330350330350470470

115125130115125130215225240215225240330350330350470470

-20 SST

6,0008,200

10,5007,600

10,30012,70012,00016,40021,00015,20020,60025,40024,60031,50030,90038,10042,00050,800

7,30010,00012,8009,300

12,60015,50014,60020,00025,60018,60025,20031,00030,00038,40037,80046,50051,20062,000

+20 SST

6,8009,400

12,1008,600

11,80014,50013,60018,80024,20017,20023,60029,00028,20036,30035,40043,50048,40058,000

N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A

AIRFLOW(CFM)

3,2453,0602,9602,9852,8152,7256,4906,1205,9205,9705,6305,4509,1808,8808,4458,175

11,84010,900

4,7904,3004,1304,4053,9553,8009,5808,6008,2608,8107,9107,600

12,90012,39011,86511,40016,52015,200

L

38.0038.0038.0038.0038.0038.0063.0063.0063.0063.0063.0063.0092.0092.0092.0092.00

119.00119.00

38.0038.0038.0038.0038.0038.0063.0063.0063.0063.0063.0063.0092.0092.0092.0092.00

119.00119.00

W

19.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.00

19.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.00

H

26.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.75

26.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.75

CAPACITY (BTUH) @ 10˚F TD

Low Temperature – Below +30°F Extra High Velocity

DIMENSIONS (IN)REFRIG

CHARGE (LBS)23423445645678781111

23323334634668681010

LIQUIDODS1/21/21/21/21/21/25/85/85/85/85/85/87/87/87/87/87/87/8

1/21/21/21/21/21/25/85/85/85/85/85/87/87/87/87/87/87/8

SUCTIONODS1-1/81-1/81-1/81-1/81-1/81-1/81-5/81-5/81-5/81-5/81-5/81-5/81-5/82-1/81-5/82-1/82-1/82-1/8

1-1/81-5/81-5/81-1/81-5/81-5/81-5/81-5/81-5/81-5/81-5/81-5/81-5/82-1/81-5/82-1/82-1/82-1/8

REFRIGERATION CONNECTIONS


Hot Gas Defrost Medium Profile



Electric Data

LOW / MEDIUM TEMPERATURE

MODEL

MK14( )-60MK14( )-82MK14( )-105MK16( )-76MK16( )-103MK16( )-127MK24( )-120MK24( )-164MK24( )-210MK26( )-152MK26( )-206MK26( )-254MK34( )-246MK34( )-315MK36( )-309MK36( )-381MK44( )-420MK46( )-508

SHIPPINGWGT.(LBS)

115125130115125130215225240215225240330350330350470470

-20 SST

6,0008,200

10,5007,600

10,30012,70012,00016,40021,00015,20020,60025,40024,60031,50030,90038,10042,00050,800

+20 SST

6,8009,400

12,1008,600

11,80014,50013,60018,80024,20017,20023,60029,00028,20036,30035,40043,50048,40058,000

AIRFLOW(CFM)

3,2453,0602,9602,9852,8152,7256,4906,1205,9205,9705,6305,4509,1808,8808,4458,175

11,84010,900

L

38.0038.0038.0038.0038.0038.0063.0063.0063.0063.0063.0063.0092.0092.0092.0092.00

119.00119.00

W

19.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.0019.00

H

26.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.7526.75

CAPACITY (BTUH)

*Available Types of Defrost: (K) KGG - 2 Pipe Kool Gas with Kool Gas Pan, (H) HGE - 3 Pipe Hot Gas with Electric Pan, (G) HGG - 3 Pipe Hot Gas with Hot Gas Pan, (P) KGE - 2 Pipe Kool Gas with Electric Pan

DIMENSIONS (IN)KG-HG-TEE

ODS

1/21/21/21/21/21/25/85/85/85/85/85/87/87/87/87/87/87/8

REFRIGCHARGE (LBS)

23423445645678781111

LIQUIDODS

1/21/21/21/21/21/25/85/85/85/85/85/87/87/87/87/87/87/8

SUCTIONODS

1-1/81-1/81-1/81-1/81-1/81-1/81-5/81-5/81-5/81-5/81-5/81-5/81-5/82-1/81-5/82-1/82-1/82-1/8

REFRIGERATION CONNECTIONS@ 10˚F TD

MK MOTOR OPTIONS

115/1 230/1 230/3*PSC MOTORS OPTIONAL

4.5 127 2.52 125 - - 3.8 192 1.9 192 - - 0.9 234 - -

9.0 254 5.04 250 4.4 250 7.6 384 3.8 384 3.3 384 1.8 468 1.6 468

13.5 381 7.56 375 4.4 375 11.4 576 5.7 576 3.3 576 2.7 702 1.6 702

18.0 508 10.08 500 6.7 500 15.2 768 7.6 768 5.0 768 3.6 936 2.4 936

4.5 357 2.52 352 - - - - 2.3 419 - - 1.1 444 - -

9.0 714 5.04 704 4.4 704 - - 4.6 838 4.0 838 2.2 888 1.9 888

13.5 1071 7.56 1056 4.4 1056 - - 6.9 1257 4.0 1257 3.3 1332 1.9 1332

18.0 1428 10.08 1408 6.7 1408 - - 9.2 1676 6.1 1676 4.4 1776 2.9 1776

EC MOTORS STANDARD460/1

WATTSAMPSWATTSAMPSWATTSAMPSWATTSAMPSWATTSAMPS115/1 230/1

WATTSAMPS230/3

WATTSAMPSWATTSAMPS460/3*

1 Fan

2 Fan

3 Fan

4 Fan

1 Fan

2 Fan

3 Fan

4 Fan

MV MOTOR OPTIONS

NOTE: 3-Phase options are single phase motors wired for 3-phase operation.NOTE: PSC motors are permitted in the USA only for 460V, other voltages must be EC when applied in the USA.Name plate amps for variable speed motors may vary be 0.1 A but do not change MOP calculations.

*3-phase options are single-phase motors wired for 3-phase operation.

NOTE: PSC motors are permitted in the USA only for 460V, other voltages must be EC when applied in the USA.Name plate amps for variable speed motors may vary be 0.1 A but do not change MOP calculations.

*3-phase options are single-phase motors wired for 3-phase operation.


Electric/Hot Gas Defrost Heater Data



MODELMK14( )-60MK14( )-82MK14( )-105MK16( )-76MK16( )-103MK16( )-127MK24( )-120MK24( )-164MK24( )-210MK26( )-152MK26( )-206MK26( )-254MK34( )-246MK34( )-315MK36( )-309MK36( )-381MK44( )-420MK46( )-508

LOW / MEDIUM TEMPERATURE

230/110.010.012.610.010.012.619.119.124.319.119.124.328.736.528.736.547.847.8

230/36.56.57.56.56.57.5

12.212.214.312.212.214.318.321.518.321.527.927.9

460/33.03.04.23.03.04.25.35.37.65.35.37.67.9

11.37.9

11.314.414.4

EDL HEATER AMPS (E)

230V2,3002,3002,9002,3002,3002,9004,4004,4005,6004,4004,4005,6006,6008,4006,6008,400

11,00011,000

460V2,0002,0002,9002,0002,0002,9003,8003,8005,6003,8003,8005,6005,7008,4005,7008,400

11,00011,000

EDL HEATER WATTS (E)

115/14.34.34.34.34.34.37.07.07.07.07.07.0

10.410.410.410.412.212.2

230/12.22.22.22.22.22.23.53.53.53.53.53.55.25.25.25.26.16.1

WATTS500500500500500500800800800800800800

1,2001,2001,2001,2001,4001,400

AMPSKGE-HGE DRAIN PAN (H,P)

MODELMV14E-73MV14E-100MV14E-128MV16E-93MV16E-126MV16E-155MV24E-146MV24E-200MV24E-256MV26E-186MV26E-252MV26E-310MV34E-300MV34E-384MV36E-378MV36E-465MV44E-512MV46E-620

LOW TEMPERATURE

230/110.010.012.610.010.012.619.119.124.319.119.124.328.736.528.736.547.847.8

230/36.56.57.56.56.57.5

12.212.214.312.212.214.318.321.518.321.527.927.9

460/33.03.04.23.03.04.25.35.37.65.35.37.67.9

11.37.9

11.314.414.4

EDL HEATER AMPS (E)

230V2,3002,3002,9002,3002,3002,9004,4004,4005,6004,4004,4005,6006,6008,4006,6008,400

11,00011,000

460V2,0002,0002,9002,0002,0002,9003,8003,8005,6003,8003,8005,6005,7008,4005,7008,400

11,00011,000

EDL HEATER WATTS (E)


Dimensional Data



Note: Dimensions in inches.

SIZE A B C D

1 FAN 38.375 27.000 – 19.1882 FAN 63.375 54.000 – 32.6883 FAN 92.375 81.000 54.000 46.1884 FAN 119.375 108.000 54.000 59.688

UNIT DIMENSIONS

NOTE: Unit should be located a minimum of 24” from walls for best results. Optional air throw booster(s) produce:

60 ft. air throw (MK) 75 ft. air throw (MV)


Wiring Diagrams



Air Defrost Motor Wiring

Electric Defrost Motor and Defrost Control Wiring - Single Phase

L L21

L2

LL1 2

HN F BX PS 7 84 L1

L2


Wiring Diagrams



Electric Defrost Motor and Defrost Control Wiring - Three Phase 230

Electric Defrost Motor and Defrost Control Wiring - Three Phase 460

2LL

1L3HN F BX PS 7 84

L2

L1

L3HN F BX PS 7 84

Krack, a Hussmann Corporation brand 890 Remington BoulevardBolingbrook, Illinois 60440Ph: 630.629.7500

www.krack.com

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Wiring Diagrams

Air Defrost Motor Wiring - VS Motor


Electric Defrost Motor and Defrost Control Wiring - VS Motor

GDF

3.0

SWNE

SHEET OF

®

4 C30823214

DEFROST-AIR MK 1-4 FANS KE2CONTROLLER

GDF

3.0

SWNE

SHEET OF

®

4 C30823214

DEFROST-AIR MK 1-4 FANS KE2CONTROLLER

10 MK/MV SERIES UNIT COOLERS

Specifications subject to change without notice.

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