KRAMER KM-CTT-0720A Thermobank Hot Gas Defrost 12 through 70 HP Instruction Manual

KRAMER KM-CTT-0720A Thermobank Hot Gas Defrost 12 through 70 HP

Standard Features

• All Welded Thermobank
• Liquid Subcooling Circuit
• Manual Pumpdown Switch
• Crankcase Heater(s)
• Liquid Line Filter-Drier
• Semi-Hermetic Compressor(s)
• Moisture Indicating Sightglass
• Electronic Room Thermostat (Loose)
• Environmentally Safe Refrigerants
• Suction Solenoid Valve
• Floating Head Pressure
• Sub-Circuit Fusing
• Replaceable Core Liquid Line Filter-Drier
• Replaceable Core Suction Line Filter
• Low Noise / Energy Efficient 850 RPM Motors
• Bank Water Level Gauge
• Thermobank Drain Valve
• Adjustable Fan Cycling
• Copper Tube-Aluminum Fin Coils
• Hi-Lo Pressure Switch
• Pressure Relief Valve
• Electronic Oil Pressure Safety Control
• Weatherproof Outdoor Housing
• Manual Compressor Switch
• Receiver With Service Valves
• Evaporator(s)
• Complete Defrost Controls
• X-Braided Pressure Control Hose
• Suction & Discharge Vibration Elim.
• Control Circuit Transformer – 460V & 575V

Options

• Oil Separator
• Non-Fused Disconnect
• Phase Loss Monitor
• Pressure Relief Valve
• Oversize Condenser
• Oversize Liquid Receiver
• Suction Accumulator
• Anti-Short Cycle Timer
• Single Point Alarm
• High, Low, And Oil Pressure Gauges
• Copper Fin Coil
• Coated Fin Coil

THERMOBANK is available for all commercial and industrial applications with temperatures ranging from -30°F to +35°F. This factory packaged hot gas defrost system employs a
re-evaporator, ensuring a highly efficient defrost cycle, but requires no suction accumulators, reversing valves or hot gas line from condensing unit to evaporator.
THERMOBANK provides continuous energy savings as the outdoor temperature drops; BTU per Hour increases and compressor watts decrease resulting in more cooling and less energy usage for each operating hour.
Less equipment is needed with THERMOBANK because it does more refrigeration in 24 hours than other packaged systems. With it’s extremely fast defrost period (typically 5 to 10 minutes), THERMOBANK is refrigerating while others are still defrosting. With the lowest possible, head pressure there is a marked increase in BTU per Hour capacity.

NOMENCLATURE

SCHEMATIC LEGEND

• A = CONDENSER
• B = THERMOBANK
• C = COMPRESSOR
• E = EVAPORATOR
• R = RECEIVER
• X = EXPANSION VALVE

1. DISCHARGE SOLENOID
2. HOT GAS SOLENOID
3. LIQUID SOLENOID
4. SUCTION SOLENOID
5. BY-PASS VALVE
6. CHECK VALVE
7. SIGHT GLASS

HOW THERMOBANK WORKS
Every refrigeration system discharges the heat picked up from the evaporator and the compressor. This waste heat is normally rejected by the condenser. With Thermobank, the compressor (C) discharge passes through a heating loop that is submerged in a water filled bank (B), and then on through the condenser (A). The bank stores sufficient heat to fully re-evaporate all the liquid resulting from the defrost of the Evaporator (E).

THE REFRIGERATION CYCLE
The compressor discharge refrigerant, after heating the bank water, flows to the air cooled condenser and then to the receiver (R). From the receiver the liquid refrigerant flows through a sub-cooling circuit in the condenser and on to the expansion valve (X), and the evaporator (E). The refrigerant returns to the compressor as in any standard system.
To prevent excessive super-heating of the refrigerant vapor returning to the compressor and to maintain the water temperature in the bank, the refrigerant flow bypasses the bank through the suction line solenoid (4) during the refrigeration cycle. This normally closed suction line solenoid is generously sized for minimum pressure drop, providing an extra margin of safety. On low temperature systems, an electronically operated holdback valve (H) ensures that no refrigerant flows through the bank during the refrigeration cycle.

THE DEFROST CYCLE
A time clock automatically puts the Thermobank system into a defrost cycle and initiates the following: Discharge solenoid Valve (1) closes; the evaporator (E) fans stop; hot gas solenoid valve (2) opens; liquid solenoid valve (3) closes; suction solenoid valve (4) closes.
The compressor discharge gas goes directly into the liquid line because by- pass solenoid valve (5) is open when discharge solenoid (1) is closed. All the warm liquid refrigerant in the liquid line flows through the evaporator. This liquid refrigerant insures a rapid defrost and charges the defrost circuit. Additional hot gas condenses in the evaporator providing an unusually rapid defrost at all ambient conditions.
With the suction solenoid (4) closed, the liquid refrigerant flows through the holdback valve (H) which controls the rate of refrigerant flow and the pressure in the bank. The bank becomes an evaporator and absorbs the stored heat. The Thermobank system utilizes a high pressure safety control which functions to momentarily open the discharge line solenoid (1) if discharge pressures rise to a high level.
The defrost cycle is terminated by a pressure switch that senses evaporator pressures and starts the post-defrost period. During post-defrost the discharge solenoid (1) is open; by-pass solenoid valve (5) is closed and hot gas solenoid (2) is closed. Suction solenoid (4) and liquid solenoid (3) remain closed. At the end of the pressure terminated post-defrost period, both suction solenoid (4) and liquid solenoid (3) open and the evaporator fan motors start. During defrost, the hot gas by-passes the receiver so after defrost the receiver contains ample liquid refrigerant to begin refrigerating immediately and prevent compressor short cycling. The system then returns to the normal refrigeration cycle.

FASTEST DEFROST
THERMOBANK has a typical defrost cycle duration of 5 to 10 minutes. The defrost is uniform throughout the coil, and minimizes the heat and vapor added to the room during defrost. The defrosting evaporator receives the full heat of rejection of the refrigerant. This is the sum of the compressor heat while operating at maximum suction pressure during the defrost cycle and the heat extracted from the bank. There is always an adequate supply of refrigerant for defrosting.

EXTRA COMPRESSOR PROTECTION
Many factors are incorporated in Thermobank to protect the compressor and insure long life. All units utilize
a pump-down cycle to prevent refrigerant migration to the compressor during the off-cycle. During the defrost cycle the bank is protected against flood- back. The holdback valve protects against overloading the compressor motor by regulating the inlet pressure to the compressor. The reduced refrigerant charge is additional protection for the compressor.

BANK DESIGN
The bank has a welded hermetic design to insure a long, leak free life. The heavy gauge steel shell has a bulls-eye water level gauge. Checking the water level is quick and easy. The shell is insulated with closed cell foam to maintain proper water temperature at any ambient condition and provide optimum system performance. The internal heat transfer loops are die formed from extra heavy wall, seamless copper tubing. The bank contains a thermostat controlled immersion heater for stabilizing water temperature and automatic freeze protection. The heavy duty welded design makes the bank durable, reliable, safe and service free. A drain connection is also provided for seasonal shutdown when applicable.

EXTRA LARGE CONDENSERS
Ratings for ambient temperatures to 105°F are given for all Thermobank systems. Special systems are available for ambient design temperatures above 110°F. All condensers have a maximum fin spacing of 12 FPI to help prevent coil fouling and increase the time between coil cleanings. Generous coil surface keeps head pressures lower, saves energy, and extends the life of the equipment. An integral subcooling circuit is standard to prevent flash gas in liquid risers and increase system efficiency. Fan cycle controls allow some adjustability to the head pressure and will minimize fan motor energy consumption in low ambient’s. An optional pressure control may be provided on the header end fan to assure sufficient head pressure is available for a good cold ambient re-start.

OPERATING HOURS
The length of defrost must be taken into account when selecting equipment. Thermobank’s defrost cycle is very rapid, typically 5 to 10 minutes, and for this reason the equipment can be selected on the basis of 22 hours per day operation. Other systems require 30 to 40 minutes for a complete defrost and the general practice
is to select this equipment on eighteen hours per day operation. For the same job, Thermobank equipment requirement is 10% less than others. Thermobank will be refrigerating while others are still defrosting.

AVERAGE OUTDOOR TEMPERATURE
The Average Outdoor Temperature is considerably less than the design outdoor temperature. The outdoor temperature may vary hourly during a twenty-four hour day. It varies day to day, month to month, and season to season. It is the average outdoor temperature that dictates the number of hours of equipment operation. As the outdoor temperature drops, the capacity of Thermobank increases. With more BTU’s per hour, the equipment operates less time to handle the 24 hour refrigeration load. Page 7 shows the Annual Average Outdoor Temperature for locations throughout the U.S.A. and Canada. Select the location nearby or similar in temperature. The estimated annual electrical savings can be calculated from Table 1.

AVERAGE OUTDOOR TEMPERATURE

STATE-CITY| AAOT-°F| STATE-CITY| AAOT-°F| STATE-CITY| AAOT-°F| STATE-CITY| AAOT-°F|
---|---|---|---|---|---|---|---|---
ALABAMA

Birmingham Huntsville Mobile

| 63

62

60

67

| IOWA

Des Moines

| 48

50

| NEW YORK

Albany Buffalo New York Syracuse

| 46

47

48

55

47

| VIRGINIA

Norfolk Richmond Roanoke

| 55

59

58

56

|
KANSAS

Goodland Wichita

| 55

51

56

|
ALASKA

Anchorage Fairbanks Juneau

| 26

36

27

41

| WASHINGTON

Seattle Spokane

| 48

53

47

|
KENTUCKY

Louisville

| 56

56

| NORTH CAROLINA

Asheville Charlotte Raleigh

| 59

55

60

59

|
LOUISIANA

New Orleans Shreveport

| 66

68

65

| PUERTO RICO

San Juan

| 76

79

|
ARIZONA

Flagstaff Phoenix

| 60

46

72

|
NORTH DAKOTA

Bismarck

| 41

41

| WEST VIRGINIA

Beckley Charleston Elkins

| 52

51

55

49

|
MAINE

Portland

| 41

45

|
ARKANSAS

Little Rock

| 61

61

| OHIO

Akron Cincinnati Cleveland Columbus Youngstown

| 51

50

53

50

51

48

|
MARYLAND

Baltimore

| 54

55

|
CALIFORNIA

Fresno

Los Angeles Redding

San Francisco

Stockton

| 59

63

65

62

57

61

| WISCONSIN

Green Bay Milwaukee

| 43

44

46

|
MASSACHUSETTS

Boston

Blue Hill Obs.

| 48

51

48

|
WYOMING

Cheyenne Sheridan

| 43

46

45

|
MICHIGAN

Detroit

Grand Rapids Marquette

| 45

49

47

39

| OKLAHOMA

Oklahoma City

| 60

60

|
COLORADO

Colorado Springs Denver

Grand Junction

| 45

49

50

53

| OREGON

Portland

| 49

53

| CANADA|
MINNESOTA

Duluth Minneapolis

| 41

38

45

| PENNSYLVANIA

Allentown Erie Philadelphia Pittsburgh Scranton

| 49

51

49

54

50

49

| PROVINCE-CITY| AAOT-°F|
ALBERTA

Calgary Edmonton

| ****

35

34

|
CONNECTICUT

Hartford

| 49

50

|
MISSISSIPPI

Jackson Tupelo

| 63

64

62

|
DELAWARE

Wilmington

| 55

54

| BRITISH COLUMBIA

Vancouver Victoria

| ****

51

51

|
D.C.

Washington

| 55

57

| MISSOURI

Kansas City St. Louis

| 55

54

56

| RHODE ISLAND

Providence

| 50

50

|
MANITOBA

Brandon Winnipeg

| ****

35

36

|
FLORIDA

Gainesville Jacksonville Miami Orlando Tampa

W. Palm Beach

| 71

68

68

75

72

72

74

| SOUTH CAROLINA

Charleston Greer

| 63

65

60

|
MONTANA

Billings Glasgow Great Falls Helena

| 433

47

42

45

44

|
NEW BRUNSWICK

Saint John

| ****

42

|
SOUTH DAKOTA

Huron

| 46

45

|
NEWFOUNDLAND

Gander St. John’s

| ****

43

44

|
TENNESSEE

Bristol Knoxville Memphis

| 58

55

57

62

|
NEBRASKA

North Platte Omaha Scottsbluff Valentine

| 49

48

50

48

47

|
GEORGIA

Atlanta Macon Savannah

| 64

61

64

66

| NOVA SCOTIA

Halifax

| ****

46

|
TEXAS

Amarillo Dallas El Paso Houston Lubbock

San Antonio

Wichita Falls

| 65

57

65

63

68

60

68

63

| ONTARIO

Ottawa

Sault Ste. Marie Thunder Bay Toronto Windsor

| ****

42

40

37

47

49

|
HAWAII

Honolulu

| 76

77

| NEVADA

Las Vegas Reno

| 50

67

51

|
IDAHO

Boise

| 45

51

|
NEW HAMPSHIRE

Concord

| 44

45

|
ILLINOIS

Chicago Peoria

| 52

49

51

| QUEBEC

Montreal Quebec

| ****

43

39

|
NEW JERSEY

Newark Trenton

| 63

55

54

|
UTAH

Salt Lake City

| 49

52

|
INDIANA

Fort Wayne Indianapolis

| 52

50

52

| SASKATCHEWAN

Regina Saskatoon

| ****

35

34

|
NEW MEXICO

Albuquerque

| 54

56

| VERMONT

Burlington

| 43

44

|
ANNUAL AVERAGE OUTDOOR TEMPERATURE| 75°F| 70°F| 65°F| 60°F| 55°F| 50°F| 45°F| 40°F
---|---|---|---|---|---|---|---|---
ESTIMATED ANNUAL ELECTRICAL SAVINGS| 5%| 10%| 15%| 20%| 25%| 30%| 35%| 40%
FACTOR TO COST CONVENTIONAL SYSTEM| 0.95| 0.90| 0.85| 0.80| 0.75| 0.70| 0.65| 0.60

LOW TEMPERATURE (0ºF to -40ºFst) PERFORMANCE DATA

42,400
2200L44| 132,000| 119,800| 109,200| 98,100| 87,500| 77,300| 67,600| 49,100
2700L44| 169,800| 153,700| 138,100| 123,100| 108,700| 95,200| 82,600| 60,400
3100L44| 187,300| 169,600| 153,900| 136,300| 121,700| 106,400| 92,700| 69,350
4400L44| 267,000| 242,100| 218,600| 196,300| 175,100| 154,800| 135,300| 98,300
5400L44| 340,500| 307,900| 279,100| 248,500| 219,400| 192,000| 166,400| 121,700
6200L44| 373,300| 338,000| 306,700| 271,650| 242,600| 212,100| 184,750| 138,200
AMBIENT CORRECTION FACTOR

AMB.| R404A
80°F| 1.15
85°F| 1.10
90°F| 1.05
95°F| 1.00
100°F| 0.95
105°F| 0.90

For design conditions other than 95° F, multiply the rating by the correction factor.

LOW TEMPERATURE PHYSICAL DATA

MODEL CTT| COMPRESSOR| COND FANS| CONNECTIONS| CHARGE LBS.| UNIT CONFIG.| APPROX. NET LBS.
---|---|---|---|---|---|---
QTY.| MODEL NO.| QTY.| DIA.| HP| SUC. OD| LIQ. OD| UNIT 2| RECV 1
1200L44| 1| 4DA-F47KE| 2| 30| 1| 1-5/8| 5/8| 22| 95| B| 1,300
1500L44| 1| 4DH-F63KE| 2| 30| 1| 1-5/8| 5/8| 29| 95| B| 2,200
2200L44| 1| 4DJ-F76KE| 2| 30| 1| 2-1/8| 7/8| 39| 128| B| 2,500
2700L44| 1| 6DH-F93KE| 2| 30| 1| 2-1/8| 7/8| 49| 162| B| 3,100
3100L44| 1| 6DJ-F11ME| 3| 30| 1| 2-1/8| 7/8| 58| 195| C| 3,600
4400L44| 2†| 4DJ-F76KE| 4| 30| 1| 3-1/8| 1-1/8| 58| 195| D| 5,000
5400L44| 2†| 6DH-F93KE| 4| 30| 1| 3-1/8| 1-1/8| 101| 370| D| 5,500
6200L44| 2†| 6DJ-F11ME| 6| 30| 1| 3-1/8| 1-1/8| 101| 370| E| 7,000

† Compressors piped in parallel.

1. Receiver at 90% full.
2. Estimated refrigerant charge is for a condensing unit only. It does not include evaporators, interconnecting piping or other
   accessories.
   See back cover for unit configuration.

LOW TEMPERATURE ELECTRICAL DATA

37
1500L44| 52.6| 278| 8.0| 65.6| 79| –| –| –| –| –| 26.3| 139| 4.0| 34.8| 42
2200L44| –| –| –| –| –| 57.7| 374| 8.0| 70.7| 86| 28.8| 187| 4.0| 37.3| 45
2700L44| –| –| –| –| –| 72.4| 450| 8.0| 85.4| 104| 36.2| 225| 4.0| 44.7| 54
3100L44| –| –| –| –| –| 85.9| 470| 12.0| 102.9| 125| 42.9| 235| 6.0| 53.4| 65
4400L44| –| –| –| –| –| 115.4| 748| 16.0| 137.4| 152| 57.6| 374| 8.0| 70.6| 78
5400L44| –| –| –| –| –| 144.8| 900| 16.0| 166.8| 185| 72.4| 450| 8.0| 85.4| 95
6200L44| –| –| –| –| –| 171.8| 940| 24.0| 201.8| 224| 85.8| 470| 12.0| 102.8| 114
MODEL CTT| 575/3/60
---|---
COMP.| COND. FLA| UNIT AMPS| MCA‡
RLA| LRA
1200L44| 17.5| 106| 4.2| 22.2| 27
1500L44| 20.9| 113| 4.2| 25.6| 31
2200L44| 24.1| 135| 4.2| 28.8| 35
2700L44| 32.5| 172| 4.2| 37.2| 45
3100L44| 39.6| 200| 6.3| 46.4| 56
4400L44| 48.2| 270| 8.4| 57.1| 69
5400L44| 65.0| 344| 8.4| 73.9| 90
6200L44| 79.2| 400| 8.4| 88.1| 108

MEDIUM TEMPERATURE (+10ºF to +25ºFst) PERFORMANCE DATA

81,800
1500M**| 144,300| 130,700| 119,100| 108,000| 129,100| 115,500| 103,900| 93,000
2000M**| 157,900| 143,500| 132,200| 118,900| 150,000| 136,300| 125,600| 113,000
2500M**| 201,000| 183,200| 167,700| 151,200| 179,700| 161,800| 146,300| 130,200
3000M**| 228,100| 207,700| 188,400| 170,100| 204,000| 183,400| 164,300| 146,500
3500M**| 298,900| 272,000| 246,700| 222,900| 267,300| 240,200| 215,200| 192,000
4000M**| 339,400| 310,000| 282,000| 255,400| 303,500| 273,800| 246,000| 219,900
5000M**| 384,800| 350,400| 317,300| 285,900| 344,100| 309,500| 276,700| 246,200
6000M**| 455,400| 384,800| 376,300| 339,800| 407,200| 339,800| 328,200| 292,600
7000M**| 584,100| 455,400| 485,700| 440,300| 522,200| 402,200| 423,600| 379,100
 | AMBIENT|
---|---|---
CORRECTION FACTOR
AMB.| R404A| R407C
80°F| 1.15| 1.10
85°F| 1.10| 1.07
90°F| 1.05| 1.03
95°F| 1.00| 1.00
100°F| 0.95| 0.96
105°F| 0.90| 0.92

** 44 = R404A OR R507, 47 = R407C. For ambient design conditions other than 95°F, multiply the rating by the correction factor.

MEDIUM TEMPERATURE PHYSICAL DATA

MODEL CTT

| ****

COMPRESSOR

| ****

COND. FANS

| CONNECTIONS| CHARGE LBS.| ****

UNIT CONFIG.

| ****

APPROX. NET LBS.

---|---|---|---|---|---|---
R407C| R-404A & R-507| R407C| R-404A & R-507
QTY.| MODEL NO.| QTY.| DIA.| HP| SUC. OD| LIQ. OD| SUC. OD| LIQ. OD| UNIT2| RECV1| UNIT2| RECV1
1200M**| 1| 3DF-R15ME| 2| 30| 1| 1-5/8| 7/8| 1-5/8| 7/8| 29| 106| 25| 91| B| 2,000
1500M**| 1| 3DS-R17ME| 2| 30| 1| 1-5/8| 7/8| 1-5/8| 7/8| 34| 102| 29| 94| B| 2,200
2000M**| 1| 4DB-R20ME| 2| 30| 1| 2-1/8| 7/8| 2-1/8| 7/8| 34| 102| 29| 94| B| 2,600
2500M**| 1| 4DH-R22ME| 2| 30| 1| 2-1/8| 7/8| 2-1/8| 7/8| 45| 140| 39| 128| B| 3,000
3000M**| 1| 4DJ-R28ME| 3| 30| 1| 2-1/8| 1-1/8| 2-1/8| 1-1/8| 68| 213| 58| 195| C| 3,600
3500M**| 1| 6DH-R35ME| 3| 30| 1| 2-1/8| 1-1/8| 2-1/8| 1-1/8| 68| 213| 58| 195| C| 3,800
4000M**| 1| 6DJ-R40ME| 3| 30| 1| 2-1/8| 1-3/8| 2-1/8| 1-1/8| 86| 286| 74| 262| C| 4,300
5000M**| 2‡| 4DH-R22ME| 4| 30| 1| 2-5/8| 1-1/8| 2-5/8| 1-1/8| 90| 286| 78| 262| D| 5,250
6000M**| 2‡| 4DJ-R28ME| 4| 30| 1| 2-5/8| 1-5/8| 2-5/8| 1-3/8| 118| 403| 101| 370| D| 5,700
7000M**| 2‡| 6DH-R35ME| 6| 30| 1| 3-1/8| 1-3/8| 3-1/8| 1-3/8| 131| 403| 113| 370| E| 8,000

** 44 = R404A or R507, 47 = R407C † Compressors piped in parallel. See back cover for unit configuration.
1 Receiver at 90% full.
2 Estimated refrigerant charge is for a condensing unit only. It does not include evaporators, interconnecting piping or other accessories.

MEDIUM TEMPERATURE ELECTRICAL DATA

34
1500M**| 53.5| 275| 8.0| 65.5| 79| –| –| –| –| –| 26.0| 138| 4.0| 34.0| 41
2000M**| –| –| –| –| –| 64.7| 374| 8.0| 76.7| 93| 32.4| 187| 4.0| 40.4| 49
2500M**| –| –| –| –| –| 73.7| 428| 8.0| 85.7| 105| 36.9| 214| 4.0| 44.9| 55
3000M**| –| –| –| –| –| 94.6| 470| 12.0| 110.6| 135| 47.3| 235| 6.0| 57.3| 70
3500M**| –| –| –| –| –| 112.3| 565| 12.0| 128.3| 157| 56.2| 283| 6.0| 66.2| 81
4000M**| –| –| –| –| –| 128.2| 594| 12.0| 144.2| 177| 64.1| 297| 6.0| 74.1| 91
5000M**| –| –| –| –| –| 147.4| 856| 16.0| 167.4| 186| 73.8| 428| 8.0| 85.8| 96
6000M**| –| –| –| –| –| 189.2| 940| 16.0| 209.2| 233| 94.6| 470| 8.0| 106.6| 119
7000M**| –| –| –| –| –| 224.6| 1130| 24.0| 252.6| 281| 112.4| 566| 12.0| 128.4| 143
MODEL CTT| 575/3/60
---|---
COMP.| COND. FLA| UNIT AMPS| MCA³
RLA| LRA
1200M**| –| –| –| –| –
1500M**| 23.6| 110| 4.2| 28.8| 34
2000M**| 28.2| 135| 4.2| 36.2| 44
2500M**| 34.4| 172| 4.2| 39.6| 48
3000M**| 39.3| 200| 6.3| 46.6| 56
3500M**| 42.5| 230| 6.3| 49.8| 60
4000M**| 53.5| 245| 6.3| 60.8| 74
5000M**| 68.8| 344| 8.4| 78.2| 95
6000M**| 78.6| 400| 8.4| 88.0| 107
7000M**| 85.0| 460| 12.6| 98.6| 119

** 44 = R404A OR R507, 47 = R407C
³ MCA does not include evaporator motors. – Not Available

Department of Energy Annual Walk-In Energy Factor (AWEF) Ratings

Base Model Number| AWEF
Outdoor Rated| Indoor Rated

Medium Temperature Models1

Low Temperature Models2

• Each asterisk represents a variable character based upon model, voltage, and vintage ordered. See page 3 for nomenclature.

See page 11 for dimensional drawings.
^ Larger HP Single and Parallel Compressor models are not intended for use in walk-in coolers and freezers less than 3,000 sq. feet thus are outside of the scope of this DOE regulation. Dual Compressor models serve more than one refrigerated load thus are outside (exempt) of the scope of this DOE regulation.

1. If the medium temperature model has a numerical value in the table above, the following statement applies: “This refrigeration system is designed and certified for use in walk-in cooler applications.”
2. If the low temperature model has a numerical value in the table above, the following statement applies: “This refrigeration system is designed and certified for use in walk-in freezer applications.”

PHYSICAL DIMENSIONS

Due to ongoing product improvement, specifications are subject to change without notice.

201 Thomas French Drive, Scottsboro, AL 35769

• PHONE 256-259-7400
• FAX 256-259-7478
• kramer.htpg.com
• E-mail or call us for help: parts@htpg.com or 1-855-HTPARTS (1-855-487-2787)

References

• Commercial and Industrial Refrigeration Equipment and Solutions - Kramer

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