COLDZONE A2L CENTER MOUNT UNIT COOLER
Walk-Ins: Small to Medium Cooler and Freezer Applications
FEATURES
Center Mount Unit Coolers are designed for use in walk-in coolers and freezers with very low headroom clearance. Units mount flush to the ceiling to provide extra storage space. Features include two-way air flow for even circulation and temperature, easy serviceability, usability with multiple refrigerants, and are available in air and electric defrost models.
SIZES
Available with capacities ranging from 4,500 to 33,700 BTUH at a 10°TD. One through five fan models are available with air flow spanning a range of 572 to 3,150 CFM.
HOUSING
The embossed aluminum casing is lightweight yet durable. Each fan section is baffled to prevent short cycling of the discharge air. Units mount flush to the ceiling and are compliant with NSF requirements. The top panel contains 3/8" mounting holes for simplified installation. The housing is sloped for efficient condensate draining. A uniquely shaped control access cover allows for easy access for service in confined spaces.
COIL
Copper hairpins consist of high efficiency 3/8" enhanced copper tubes, staggered and mechanically expanded into corrugated aluminum fins for maximum heat transfer and reduced refrigerant charge. Die formed fin collars provide even fin spacing. Medium temperature models have 6 fins per inch (FPI) and low temperature models have 6 and 4 FPI. Sweat connections are standard on all models.
MOTORS
Standard models feature highly efficient Dual Speed Electronically Commutated (EC) motors. Available for 115V or 208-230V/1 and compliant with California Title 24 regulations. All motors include thermal overload protection.
FANS AND FAN GUARDS
Aluminum 12" fans are balanced for vibration-free operation. Improved black plastic fan guard design and deep draw venturi achieve optimal air pattern. Fan motors and blades can be easily accessed by removing the fan guard.
REFRIGERANTS
Center Mount Unit Coolers are optimized for multiple A2L refrigerants including R454A, R454C, and R455A. Please specify refrigerant requirements when ordering. A separate compartment is provided for all refrigerant connections, allowing for internal mounting of expansion valves.
AIR DEFROST
Air Defrost models are designed for use in coolers down to 35°F. All Air Defrost models are 6 FPI.
ELECTRIC DEFROST
Electric Defrost 6 FPI models are designed for use in coolers and freezers down to -10°F, and 4 FPI models are designed for use in freezers between 32°F to -10°F.
ELECTRICAL
Available for 115V and 208-230V/1. All components are factory wired to terminal strips and are UL and cUL listed.
OPTIONAL FEATURES
- EcoNet® Enabled Controller¹ (factory-installed)
- EcoNet® Command Center (loose)
- Thermostat - Mechanical or Electric (mounted or loose)
- Thermostatic Expansion Valve (mounted or loose)
- Electronic Expansion Valve (mounted or loose)
- Solenoid Shut Off Valve (SSOV) in place Liquid Line Solenoid Available Loose for field installation.
- Insulated Drain Pan
- Painted Cabinet (White or Black)
- Stainless Steel Cabinet
- Coated Coil (Russproof, Heresite, Bronz-Glow, or Electrofin®)
MODEL NOMENCLATURE
| Brand | Refrigerant Class | Style | Fins per Inch (FPI) | Defrost Type | BTUH by Hundreds | Unit Voltage | Motor Type | Vintage |
|---|---|---|---|---|---|---|---|---|
| C = Coldzone | A2L | E = Center Mount | 4 FPI | A = Air | XXX | A = 115/1/60 | D = Dual Speed EC | A |
| 6 FPI | E = Electric | D = 208-230/1/60 |
¹ EcoNet Control Package includes: EEV; suction pressure transducer; suction, entering air coil temp. thermistors; local on-board two-row LCD display and push-button adjustments. (Controller replaces TXV, liquid line solenoid valve, room thermostat, defrost termination and fan delay, and time clock.) EcoNet approved refrigerants are: RR454A, R454C, R455A.
^50 Hz available. Contact Factory for additional information.
ECONET® ENABLED UNIT COOLERS (OPTIONAL)
Developed in conjunction with Rheem Manufacturing specifically for walk-in coolers and freezers, it builds in the reliability and efficiency of Rheem's EcoNet technology.
- Saves energy in refrigeration systems through precise superheat and space temperature control, fan cycling, and controlling how often the system goes into defrost based on compressor runtime.
- Eliminates unnecessary defrosts
- Maximizes energy efficiency with less compressor runtime
- Reduces fan speed to 50% during off cycle for energy savings
- Can be used with a condensing unit in single and multiple evaporator installations as a group.
Optional EcoNet Command Center with intuitive graphical interface controls up to 32 devices (including the Command Center) through one display, provides continuous communication between system components, and the remote mount display allows for EcoNet Enabled Unit Coolers to be programmed, monitored and troubleshot outside of the space being cooled.
APPLICATION RATING & ELECTRICAL DATA
AIR DEFROST MODELS
| Model No. | BTUH Capacity @ 25°F ST & 10TD | CFM | No. of Fans | 115V/1 | 208-230V/1 | ||||
|---|---|---|---|---|---|---|---|---|---|
| R454A,R454C R455A | Total Fan Amps | MCA | MOPD | Total Fan Amps | MCA | MOPD | |||
| CAE6A051*DA | 5,100 | 572 | 1 | 0.8 | 15.0 | 20 | 0.5 | 15.0 | 20 |
| CAE6A085*DA | 8,500 | 1,204 | 2 | 1.6 | 15.0 | 20 | 1.0 | 15.0 | 20 |
| CAE6A103*DA | 10,300 | 1,144 | 2 | 1.6 | 15.0 | 20 | 1.0 | 15.0 | 20 |
| CAE6A128*DA | 12,800 | 1,806 | 3 | 2.4 | 15.0 | 20 | 1.5 | 15.0 | 20 |
| CAE6A157*DA | 15,700 | 1,716 | 3 | 2.4 | 15.0 | 20 | 1.5 | 15.0 | 20 |
| CAE6A173*DA | 17,300 | 2,408 | 4 | 3.2 | 15.0 | 20 | 2.0 | 15.0 | 20 |
| CAE6A207*DA | 20,700 | 2,288 | 4 | 3.2 | 15.0 | 20 | 2.0 | 15.0 | 20 |
| CAE6A249*DA | 24,900 | 2,860 | 5 | 4.0 | 15.0 | 20 | 2.5 | 15.0 | 20 |
| CAE6A316*DA | 31,600 | 3,150 | 5T | 4.0 | 15.0 | 20 | 2.5 | 15.0 | 20 |
*Asterisks represents variable character based on voltage ordered. See nomenclature on page 3.
Dual Speed EC Motors include thermal overload protection.
ELECTRIC DEFROST MODELS
| Model No. | BTUH Capacity @ -20°F ST & 10TD | CFM | No. of Fans | Total Fan Amps | Base Model | Econet Enabled | Heater Amps | Heater Watts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R454A,R454C R455A | MCA | MOPD | MCA | MOPD | MCA | MOPD | ||||||
| CAE6E045DDA | 4,500 | 602 | 1 | 0.5 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 3.3 | 750 |
| CAE6E054DDA | 5,400 | 572 | 1 | 0.5 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 3.3 | 750 |
| CAE6E090DDA | 9,000 | 1, 204 | 2 | 1.0 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 6.5 | 1,500 |
| CAE6E107DDA | 10,700 | 1,144 | 2 | 1.0 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 6.5 | 1,500 |
| CAE6E129DDA | 12,900 | 1,806 | 3 | 1.5 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 9.8 | 2,250 |
| CAE6E149DDA | 14,900 | 1,716 | 3 | 1.5 | 15.0 | 20.0 | 15.0 | 20.0 | 15.0 | 20.0 | 9.8 | 2,250 |
| CAE6E160DDA | 16,000 | 2,408 | 4 | 2.0 | 15.0 | 20.0 | 18.8 | 20.0 | 18.8 | 20.0 | 13.0 | 3,000 |
| CAE6E217DDA | 21,700 | 2,288 | 4 | 2.0 | 15.0 | 20.0 | 18.8 | 20.0 | 18.8 | 20.0 | 13.0 | 3,000 |
| CAE6E265DDA | 26,500 | 2,860 | 5 | 2.5 | 15.0 | 20.0 | 22.4 | 25.0 | 22.4 | 25.0 | 16.3 | 3,750 |
| CAE6E337DDA | 33,700 | 3,150 | 5T | 2.5 | 15.0 | 20.0 | 33.0 | 35.0 | 33.0 | 35.0 | 24.4 | 5,620 |
| Capacity Correction for Electric Defrost Evaporators | |
|---|---|
| S.S.T. (Dew) | Multiply Capacity by: |
| 20 | 1.15 |
| 0 | 1.075 |
| -10 | 1.0375 |
| -20 | 1 |
Dual Speed EC Motors include thermal overload protection.
208-230 ratings include 2 AMP for controls on Econet Enabled units.
1AMP Minimum allowed for Econet control circuit.
Econet Enabled units are not powered by the condensing unit so defrost heaters are incorporated into shown MCA/MOPD.
DISTRIBUTOR NOZZLES & EXPANSION VALVES SELECTIONS
AIR DEFROST MODELS
| Model No. | Nozzle @ Liquid Temp | TXV @ Liquid Temp | EEV @ Liquid Temp | No. of Circuits | |||
|---|---|---|---|---|---|---|---|
| 50°F | 100°F | 50°F | 100°F | 50°F | 100°F | ||
| CAE6A051*DA | 1/6, TYPE L | 1/2,TYPE L | SBFTE-AAA-C | SBFTE-AA-C | SER-AA | SER-AA | 2 |
| CAE6A085*DA | 1/4,TYPE L | 3/4,TYPE L | SBFTE-AA-C | SBFTE-AA-C | SER-A | SER-A | 2 |
| CAE6A103*DA | 1/3, TYPE L | 3/4,TYPE L | SBFTE-AA-C | SBFTE-A-C | SER-A | SER-A | 2 |
| CAE6A128*DA | 1/3, TYPE L | 1, TYPE L | SBFTE-A-C | SBFTE-A-C | SER-A | SER-A | 4 |
| CAE6A157*DA | 1/2,TYPE L | 1-1/2, TYPE L | SBFTE-A-C | SBFTE-A-C | SER-A | SER-B | 4 |
| CAE6A173*DA | 1/2,TYPE L | 1-1/2, TYPE L | SBFTE-A-C | SBFTE-A-C | SER-A | SER-B | 4 |
| CAE6A207*DA | 3/4,TYPE L | 1-1/2, TYPE L | SBFTE-A-C | SBFTE-B-C | SER-A | SER-B | 4 |
| CAE6A249*DA | 3/4,TYPE L | 2, TYPE L | SBFTE-B-C | SBFTE-B-C | SER-B | SER-B | 8 |
| CAE6A316*DA | 1, TYPE L | 2-1/2, TYPE L | SBFTE-B-C | SBFTE-B-C | SER-B | SER-C | 6 |
ELECTRIC DEFROST MODELS
| Model No. | Nozzle @ Liquid Temp | TXV @ Liquid Temp | EEV @ Liquid Temp | No. of Circuits | |||
|---|---|---|---|---|---|---|---|
| 50°F | 100°F | 50°F | 100°F | 50°F | 100°F | ||
| CAE6E045DDA | 1/4,TYPE L | 1/2,TYPE L | SBFTE-AA-Z | SBFTE-AA-Z | SER-AA | SER-AA | 2 |
| CAE6E054DDA | 1/3, TYPE L | 3/4,TYPE L | SBFTE-AA-Z | SBFTE-AA-Z | SER-AA | SER-AA | 2 |
| CAE6E090DDA | 1/2,TYPE L | 3/2, TYPE L | SBFTE-A-Z | SBFTE-A-Z | SER-A | SER-A | 4 |
| CAE6E107DDA | 3/4,TYPE L | 3/2, TYPE L | SBFTE-A-Z | SBFTE-A-Z | SER-A | SER-A | 4 |
| CAE6E129DDA | 3/4,TYPE L | 3/2, TYPE L | SBFTE-A-Z | SBFTE-B-Z | SER-A | SER-A | 4 |
| CAE6E149DDA | 1, TYPE L | 2, TYPE L | SBFTE-A-Z | SBFTE-B-Z | SER-A | SER-B | 4 |
| CAE6E160DDA | 1, TYPE L | 2, TYPE L | SBFTE-A-Z | SBFTE-B-Z | SER-A | SER-B | 4 |
| CAE6E217DDA | 1-1/2, TYPE L | 1-1/2, TYPE L | SBFTE-B-Z | SBFTE-C-Z | SER-B | SER-B | 8 |
| CAE6E265DDA | 2, TYPE L | 3, TYPE L | SBFTE-B-Z | SBFTE-C-Z | SER-B | SER-B | 8 |
| CAE6E337DDA | 1-1/2, TYPE G | 4, TYPE G | SBFTE-C-Z | SBFTE-C-Z | SER-B | SER-C | 12 |
The Distributor lines are 3/16" diameter and 18" long.
Expansion valve selections based on -20 Suction Temp and 8F to 12F evaporator TD. Contact factory for operating conditions outside this range.
Do not use pressure limiting TXV's when the condensing unit includes a CPR valve.
SBFTE Expansion valves are compatible with R454A refrigerant. SBFVE Expansion valves are compatible with R454C and R455A refrigerants.
For other valves, follow manufacturers selection guidelines.
Base models (with no factory-mounted components) include nozzles sized for 100F liquid, shipped loose.
LOOSE COMPONENTS REQUIRED FOR A2L ISOLATION CONTROLS
AMIN (MINIMUM ALLOWABLE ROOM SIZE) VALUES // AIR DEFROST MODELS
| Model No. | Amin Values (Ft2) | Loose SSOV Isolation Valve @ Liquid Temp | Loose CSOV Isolation CV | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 10 Ft Line Run | 20 Ft Line Run | 30 Ft Line Run | 40 Ft Line Run | 50 Ft Line Run | Size | 50°F | 100°F | Size | Description | |
| CAE6A051*DA | 20 | 26 | 31 | 37 | 43 | 3/8 | SSOV3S130 | SSOV3S130 | 5/8 | CSOV-5S |
| CAE6A085*DA | 23 | 29 | 34 | 40 | 46 | 3/8 | SSOV3S130 | SSOV3S130 | 5/8 | CSOV-5S |
| CAE6A103*DA | 26 | 32 | 38 | 44 | 50 | 3/8 | SSOV3S130 | SSOV3S130 | 7/8 | CSOV-7S |
| CAE6A128*DA | 28 | 34 | 40 | 46 | 52 | 3/8 | SSOV3S130 | SSOV6S130 | 7/8 | CSOV-7S |
| CAE6A157*DA | 33 | 39 | 45 | 51 | 57 | 3/8 | SSOV3S130 | SSOV6S130 | 7/8 | CSOV-7S |
| CAE6A173*DA | 33 | 39 | 45 | 51 | 57 | 3/8 | SSOV3S130 | SSOV6S130 | 7/8 | CSOV-7S |
| CAE6A207*DA | 39 | 45 | 51 | 57 | 63 | 3/8 | SSOV6S130 | SSOV6S130 | 7/8 | CSOV-7S |
| CAE6A249*DA | 51 | 63 | 74 | 86 | 97 | 1/2 | SSOV6S140 | SSOV6S140 | 1-1/8 | CSOV-9S |
| CAE6A316*DA | 67 | 78 | 90 | 101 | 113 | 1/2 | SSOV6S140 | SSOV6S140 | 1-1/8 | CSOV-9S |
AMIN (MINIMUM ALLOWABLE ROOM SIZE) VALUES // ELECTRIC DEFROST MODELS
| Model No. | Amin Values (Ft2) | Loose SSOV Isolation Valve @ Liquid Temp | Loose CSOV Isolation CV | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 10 Ft Line Run | 20 Ft Line Run | 30 Ft Line Run | 40 Ft Line Run | 50 Ft Line Run | Size | 50°F | 100°F | Size | Description | |
| CAE6E045DDA | 18 | 24 | 29 | 35 | 41 | 3/8 | SSOV3S130 | SSOV3S130 | 7/8 | CSOV-7S |
| CAE6E054DDA | 20 | 25 | 31 | 37 | 42 | 3/8 | SSOV3S130 | SSOV3S130 | 7/8 | CSOV-7S |
| CAE6E090DDA | 23 | 29 | 35 | 40 | 46 | 3/8 | SSOV3S130 | SSOV3S130 | 7/8 | CSOV-7S |
| CAE6E107DDA | 26 | 32 | 38 | 44 | 50 | 3/8 | SSOV3S130 | SSOV3S130 | 1-1/8 | CSOV-9S |
| CAE6E129DDA | 28 | 33 | 39 | 45 | 51 | 3/8 | SSOV3S130 | SSOV3S130 | 1-1/8 | CSOV-9S |
| CAE6E149DDA | 32 | 38 | 44 | 50 | 55 | 3/8 | SSOV3S130 | SSOV6S130 | 1-1/8 | CSOV-9S |
| CAE6E160DDA | 32 | 38 | 44 | 49 | 55 | 3/8 | SSOV3S130 | SSOV6S130 | 1-1/8 | CSOV-9S |
| CAE6E217DDA | 43 | 54 | 66 | 77 | 88 | 1/2 | SSOV6S140 | SSOV6S140 | 1-3/8 | CSOV-11S |
| CAE6E265DDA | 50 | 61 | 72 | 83 | 95 | 1/2 | SSOV6S140 | SSOV6S140 | 1-3/8 | CSOV-11S |
| CAE6E337DDA | 64 | 76 | 87 | 98 | 109 | 1/2 | SSOV6S140 | SSOV6S140 | 1-3/8 | CSOV-11S |
Solenoid Shut off valves (SSOV) operate as double duty isolation / liquid line solenoid valve and are required to ship loose and be installed in the field, outside the refrigerated space.
*Asterisk represents a variable character based on voltage ordered. See nomenclature page for details.
SSOV/CSOV (Check Shut off valves) Selection Criteria: Maximum 10 Ft Line Rise, 100 Foot Line Run, 1:1 Condensing Unit / Evaporator.
Contact applications for additional lengths or design considerations.
Amin values calculated using operating conditions included in UL 60335-2-89 101.DVU.1.2 and standard connection sizes (liquid and Suction).
Amin values provided for 10 ft, 20 ft, 30 ft, 40 Ft and 50 Ft line lengths. Contact applications for additional lengths or design considerations.
Amin values intended to determine compliance with UL 2-89 and is NOT for charging calculations.
SPECIFICATIONS
AIR DEFROST MODELS
| Model No. | No. of Fans | No. of Hanger Slot Locations | Connection Sizes | Dimensions (Inches) | Approximate Weight (Lbs) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Liquid Line Size | Suction Line Size | Length | Width | Height | Figure | Net | Ship | |||
| CAE6A051*DA | 1 | 4 | 3/8 | 5/8 | 36 | 28-3/8" | 11-1/4" | 1 | 55 | 190 |
| CAE6A085*DA | 2 | 6 | 3/8 | 5/8 | 56 | 28-3/8" | 11-1/4" | 2 | 75 | 210 |
| CAE6A103*DA | 2 | 6 | 3/8 | 7/8 | 56 | 28-3/8" | 11-1/4" | 2 | 80 | 215 |
| CAE6A128*DA | 3 | 8 | 3/8 | 7/8 | 76 | 28-3/8" | 11-1/4" | 3 | 95 | 230 |
| CAE6A157*DA | 3 | 8 | 3/8 | 7/8 | 76 | 28-3/8" | 11-1/4" | 3 | 105 | 240 |
| CAE6A173*DA | 4 | 10 | 3/8 | 7/8 | 96 | 28-3/8" | 11-1/4" | 4 | 120 | 280 |
| CAE6A207*DA | 4 | 1 | 3/8 | 7/8 | 96 | 28-3/8" | 11-1/4" | 4 | 130 | 290 |
| CAE6A249*DA | 5 | 12 | 1/2 | 1-1/8 | 116 | 28-3/8" | 11-1/4" | 5 | 145 | 330 |
| CAE6A316*DA | 5T | 12 | 1/2 | 1-1/8 | 116 | 28-3/8" | 13-3/4" | 6 | 155 | 340 |
ELECTRIC DEFROST MODELS
| Model No. | No. of Fans | No. of Hanger Slot Locations | Connection Sizes | Dimensions (Inches) | Approximate Weight (Lbs) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Liquid Line Size | Suction Line Size | Length | Width | Height | Figure | Net | Ship | |||
| CAE6E045DDA | 1 | 4 | 3/8 | 7/8 | 36 | 28-3/8" | 11-1/4" | 1 | 50 | 185 |
| CAE6E054DDA | 1 | 4 | 3/8 | 7/8 | 36 | 28-3/8" | 11-1/4" | 1 | 55 | 190 |
| CAE6E090DDA | 2 | 6 | 3/8 | 7/8 | 56 | 28-3/8" | 11-1/4" | 2 | 75 | 210 |
| CAE6E107DDA | 2 | 6 | 3/8 | 1-1/8 | 56 | 28-3/8" | 11-1/4" | 2 | 80 | 215 |
| CAE6E129DDA | 3 | 8 | 3/8 | 1-1/8 | 76 | 28-3/8" | 11-1/4" | 3 | 95 | 230 |
| CAE6E149DDA | 3 | 8 | 3/8 | 1-1/8 | 76 | 28-3/8" | 11-1/4" | 3 | 105 | 240 |
| CAE6E160DDA | 4 | 10 | 3/8 | 1-1/8 | 96 | 28-3/8" | 11-1/4" | 4 | 120 | 280 |
| CAE6E217DDA | 4 | 10 | 1/2 | 1-3/8 | 96 | 28-3/8" | 11-1/4" | 4 | 130 | 290 |
| CAE6E265DDA | 5 | 12 | 1/2 | 1-3/8 | 116 | 28-3/8" | 11-1/4" | 5 | 145 | 330 |
| CAE6E337*DA | 5T | 12 | 1/2 | 1-3/8 | 116 | 28-3/8" | 13-3/4" | 6 | 155 | 340 |
| CAE4E043DDA | 1 | 4 | 3/8 | 7/8 | 36 | 28-3/8" | 11-1/4" | 1 | 55 | 190 |
| CAE4E087DDA | 2 | 6 | 3/8 | 7/8 | 56 | 28-3/8" | 11-1/4" | 2 | 80 | 215 |
| CAE4E127DDA | 3 | 8 | 3/8 | 1-1/8 | 76 | 28-3/8" | 11-1/4" | 3 | 105 | 240 |
| CAE4E183DDA | 4 | 10 | 3/8 | 1-1/8 | 96 | 28-3/8" | 11-1/4" | 4 | 130 | 290 |
| CAE4E222DDA | 5 | 12 | 1/2 | 1-3/8 | 116 | 28-3/8" | 11-1/4" | 5 | 145 | 330 |
| CAE4E283DDA | 5T | 12 | 1/2 | 1-3/8 | 116 | 28-3/8" | 13-3/4" | 6 | 155 | 340 |
*Asterisk represents a variable character based on voltage ordered. See nomenclature page for details.
Drain connection is 3/4" NPT for all models.
For units with mounted TXV components, see nozzle/TXV table for distributor connection size when TXV is field supplied.
TXV Type: Externally Equalized
PHYSICAL DIMENSIONS
Figure 1: Single Fan
Bottom View:
Diagram showing a rectangular unit with a single fan. Dimensions are indicated: 36" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 6-3/8" height, 11-1/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
Figure 2: Two Fan
Bottom View:
Diagram showing a rectangular unit with two fans. Dimensions are indicated: 56" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 6-3/8" height, 11-1/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
Figure 3: Three Fan
Bottom View:
Diagram showing a rectangular unit with three fans. Dimensions are indicated: 76" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 6-3/8" height, 11-1/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
Figure 4: Four Fan
Bottom View:
Diagram showing a rectangular unit with four fans. Dimensions are indicated: 96" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled. Mounting holes on four and five fan units are located 20" on center at each tube sheet.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 6-3/8" height, 11-1/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
Figure 5: Five Fan
Bottom View:
Diagram showing a rectangular unit with five fans. Dimensions are indicated: 116" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled. Mounting holes on four and five fan units are located 20" on center at each tube sheet.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 6-3/8" height, 11-1/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
Figure 6: Five Tall Fan
Bottom View:
Diagram showing a rectangular unit with five fans. Dimensions are indicated: 116" length, 28-3/8" width. Mounting holes are 3/8" diameter. Suction and Liquid ports are labeled. Mounting holes on four and five fan units are located 20" on center at each tube sheet.
Side View:
Diagram showing the side of the unit. Dimensions are indicated: 8-7/8" height, 13-5/8" depth. Includes 6 knockouts (4 side, 2 top) and a 3/4" x 1/2" NPT drain.
All dimensions are in inches.
Measurements noted on the end view drawing are the same for all units. All mounting holes are 3/8" diameter.
EVAPORATOR APPLICATION RATINGS
Multiple conditions combine to determine the application capacity of an evaporator: Walk-in space temperature, relative humidity, saturated suction temperature difference, and outdoor ambient temperature. All of these factors are considered when calculating an evaporator application rating. These ratings are considerably higher than the net capacity value used for DOE ratings (AWEF).
The AWEF of an evaporator is calculated using the dry coil capacity and the daily evaporator power consumption. Power consumption includes fan and defrost power. Evaporator net capacity reported to the DOE database is dry coil capacity less the full power fan watts. DOE test conditions are at 10°F evaporator/SST temperature difference and less than 50% relative humidity and 96°F liquid temperature. These conditions create a uniform test method, but should not be used for equipment selection, as the equipment selected would be too large for the application.
Published application ratings are a guideline for proper equipment selection. They account for true operating conditions experienced by equipment.
AWEF RATINGS // COOLER AND FREEZER MODELS
| Model No. | Defrost Type | FPI | AWEF | Model No. | Defrost Type | FPI | AWEF |
|---|---|---|---|---|---|---|---|
| Cooler Models¹ | Freezer Models² | ||||||
| CAE6A051*DA | Air Defrost | 6 | 9.00 | CAE6E045DDA | Electric Defrost | 6 | 4.15 |
| CAE6A085*DA | Air Defrost | 6 | 9.00 | CAE6E054DDA | Electric Defrost | 6 | 4.15 |
| CAE6A103*DA | Air Defrost | 6 | 9.00 | CAE6E090DDA | Electric Defrost | 6 | 4.15 |
| CAE6A128*DA | Air Defrost | 6 | 9.00 | CAE6E107DDA | Electric Defrost | 6 | 4.15 |
| CAE6A157*DA | Air Defrost | 6 | 9.00 | CAE6E129DDA | Electric Defrost | 6 | 4.15 |
| CAE6A173*DA | Air Defrost | 6 | 9.00 | CAE6E149DDA | Electric Defrost | 6 | 4.15 |
| CAE6A207*DA | Air Defrost | 6 | 9.00 | CAE6E160DDA | Electric Defrost | 6 | 4.15 |
| CAE6A249*DA | Air Defrost | 6 | 9.00 | CAE6E217DDA | Electric Defrost | 6 | 4.15 |
| CAE6A316*DA | Air Defrost | 6 | 9.00 | CAE6E265DDA | Electric Defrost | 6 | 4.15 |
| CAE6E045DDA | Electric Defrost | 6 | 9.00 | CAE6E337DDA | Electric Defrost | 6 | 4.15 |
| CAE6E054DDA | Electric Defrost | 6 | 9.00 | CAE4E043DDA | Electric Defrost | 4 | 3.96 |
| CAE6E090DDA | Electric Defrost | 6 | 9.00 | CAE4E087DDA | Electric Defrost | 4 | 4.02 |
| CAE6E107DDA | Electric Defrost | 6 | 9.00 | CAE4E127DDA | Electric Defrost | 4 | 4.07 |
| CAE6E129DDA | Electric Defrost | 6 | 9.00 | CAE4E183DDA | Electric Defrost | 4 | 4.13 |
| CAE6E149DDA | Electric Defrost | 6 | 9.00 | CAE4E222DDA | Electric Defrost | 4 | 4.15 |
| CAE6E160DDA | Electric Defrost | 6 | 9.00 | CAE4E283DDA | Electric Defrost | 4 | 4.15 |
| CAE6E217DDA | Electric Defrost | 6 | 9.00 | ||||
| CAE6E265DDA | Electric Defrost | 6 | 9.00 | ||||
| CAE6E337DDA | Electric Defrost | 6 | 9.00 | ||||
*Asterisks represents a variable character based on voltage ordered. See nomenclature on page 3.
1. If the model has a numerical value in the table above, the following statement applies: "The refrigeration system is designed and certified for use in walk-in cooler applications."
2. If the model has a numerical value in the table above, the following statement applies: "The refrigeration system is designed and certified for use in walk-in freezer applications."
COLDZONE
ENGINEERED FOR COOL.
©2025 Heat Transfer Products Group
Published June 2025
CZ-CTX-A2L-0625
coldzone.htpg.com
This information is the most current and accurate information available and is subject to change without notice. HTPG makes no warranty or guarantee of any kind, express or implied, regarding the information set forth herein, including without limitation warranty regarding its currency, accuracy or completeness or any warranty of merchantability or fitness for a particular purpose.
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