Heatcraft Refrigeration Products H-IM-82C Refrigeration/Defrost Sequence of Operation

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PRO3 Top Mount Packaged Refrigeration System Outdoor

Refrigeration/Defrost Sequence of Operation

The sequence of operation varies depending on the model that has been installed. The three basic models are Low Temperature, Medium Temperature, and High Temperature models. The particular model can be determined by the seventh digit of the model number. See Tables 1-3 for details and settings.

Control of the refrigeration and defrost system is provided by the Carel controller along with a space (box) temperature sensor and a coil (defrost) temperature sensor. The controller will control on and off switching for the compressor, condenser fan motor(s) (cycles with the compressor), evaporator fan motor(s) and electric defrost heaters for electric defrost.

The Carel controller is pre-programmed for all three applications. This is done with the use of the parameter list. The parameter list can be changed by entering the Carel Controller and changing the “EZY” setting. See page 15.

TABLE 5 Model PTT Low Temperature Models EZY SETTING =1

SET POINT IS -10° F

These models are intended for freezer applications and require electric defrost.

Status

Compressor

Condenser

Evaporator

Defrost

 

Notes

 

Fans

Fans

Heaters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display alternates “OFF” and Room

 

 

 

 

If unit shows “OFF”, depress

Off

Off

Off

Off

Off

the “^” button and hold for

Temperature

 

 

 

 

 

three seconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If coil temperature is below

On

Automatic Defrost on start up

Off

Off

Off

On

65° F. If it is above, defrost is

not initiated. Drip Time and

 

 

 

 

 

 

 

 

 

 

 

 

Freeze Time are ignored.

 

 

 

 

 

 

 

 

 

 

On

Defrost Sensor reaches 65° F and

Off

Off

Off

Off

 

 

 

defrost is terminated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System Timer Begins/ 2 min

On

Cooling cycle initiated - Drip Time

Off

Off

Off

Off

drip time

 

 

 

 

 

 

 

 

 

 

 

 

Drip Time of 2 minutes ends - coil

 

 

 

 

Compressor

starts

and

On

On

On

Off

Off

evaporator

fans delay

for 2

freeze begins

 

 

 

 

 

minutes to freeze the coil.

 

 

 

 

 

 

On

Evaporator fans start after 2 min

On

On

On

Off

 

 

 

delay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On

Box Temperature (-10.1° F) is

Off

Off

On

Off

 

 

 

satisfied

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2° F Differential, Minimum

On

Box Temperature rises to -8.0° F

On

On

On

Off

Compressor Off time is 4

 

 

 

 

 

 

 

minutes

 

 

 

 

 

 

 

 

 

 

 

On

Defrost Initiated (Manually or 6

Off

Off

Off

On

Electric Defrost

 

hour counter)

 

 

 

 

 

 

 

 

 

On

Cooling cycle initiated - Drip Time

Off

Off

Off

Off

System Timer Begins/ 2 min

drip time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drip Time of 2 minutes ends - coil

 

 

 

 

Compressor starts and

 

On

On

On

Off

Off

evaporator fans delay for 2

freeze begins

 

 

 

 

 

minutes to freeze the coil.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On

Evaporator fans start after 2 min

On

On

On

Off

 

 

 

delay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Controllers

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Contents PRO 3 Top Mount Packaged Refrigeration System Cooler Electric Defrost Systems Performance / Electrical Data Cooler Air Defrost SystemsFreezer Electric Defrost Systems For PSC, E for EC motors on evaporator section onlySee reference on Dimensional DiagramsTop View One System Recommended Unit Placement For PTT ModelsTop View Two Systems MinGeneral Safety Information Access RequirementsControl Factory Default Settings RiggingDrain Line Standard Installation ProcedurePTT Models On 2 fan modelsCurb placed on roof of walk-in cooler Maintenance Service InformationSystem Standard Maintenance Guidelines Refrigeration Sequence of OperationRefrigeration/Defrost Sequence of Operation Model PTT Low Temperature Models EZY Setting =1Status Compressor Condenser Evaporator Defrost If unit shows OFF, depressModel PTT Medium Temperature Models EZY Setting =2 Model PTT High Temperature Models EZY Setting =3Off Defrost is terminated Programming the Pjezc Carel Electronic Controller Installation and RemovalDisplay Electrical ConnectionsOutput Not FittedPreliminary Configurations KeypadsFunctions Available from Keypad Temperature Control Temperature DisplayAlarm Table of Alarms and SignalsRapid Parameter Set Selction EZY CodeData Error Description of the Main Signals and AlarmsAccessing the type F parameters Setting the Default ParametersAccessing the type C parameters Modifying the ParametersProblem Cause Checks TroubleshootingSet 1 Low Temperature Models L6 w/ -10 F Set Point Device SetupSet 2 Medium Temperature Models M6 w/ 34 F Set Point Set 3 High Temperature Models H6 w/ 38 F Set PointProblem Possible Causes Possible Corrective Steps System Troubleshooting ChartReplacement Parts by Right source. Right parts. Right nowDependable. Versatile. Courteous Defrost Systems Single Phase WiriInformation.5gTemp Medium Wiring InformationModel PTT072M6BE RevDiagram 3. Wiring Diagram Cooler Air Defrost Systems Single PhaseSystem, Typical High Temp ForOptional Three-Year Extended Compressor Warranty Warranty StatementWest Park Place Blvd., Stone Mountain, GA Heatcraft Refrigeration Products, LLC

H-IM-82C specifications

Heatcraft Refrigeration Products has long been a trusted name in the refrigeration industry, dedicated to providing innovative solutions for commercial cooling needs. One of their standout products is the H-IM-82C unit, a remarkable addition to the line that exemplifies reliability, efficiency, and advanced technology.

The H-IM-82C is engineered with exceptional features that cater to various commercial applications. It utilizes a reliable hermetic compressor specifically designed for durability and energy efficiency. This compressor ensures optimal performance while minimizing power consumption, which can lead to significant savings on energy bills over time. Additionally, the unit boasts a high-performance evaporator coil that augments cooling efficiency by maximizing heat transfer. This design feature allows for quicker cooling times, making it ideal for environments that require precise temperature control, such as food storage and preparation areas.

Another notable characteristic of the H-IM-82C is its robust insulation. The unit employs high-density foam insulation that not only enhances energy efficiency but also prevents condensation and frost build-up. This insulation method helps maintain consistent internal temperatures, which is crucial for preserving the quality of perishable goods.

Safety and monitoring technologies are also integral to the H-IM-82C's design. The unit is equipped with advanced electronic controls that facilitate easy temperature adjustments and greater operational oversight. Users can benefit from real-time monitoring and alerts, helping to ensure compliance with food safety regulations.

Moreover, the H-IM-82C is designed with versatility in mind. It can be installed in a variety of configurations, whether horizontally or vertically, allowing for seamless integration into existing systems. Its compact design is another advantage, saving space while still delivering exceptional cooling performance.

Overall, the Heatcraft H-IM-82C is a commendable option for businesses seeking a reliable refrigeration solution. With its energy-efficient compressor, advanced insulation, and user-friendly controls, it effectively balances performance and cost-effectiveness, making it a preferred choice in the competitive landscape of commercial refrigeration. Whether for a restaurant, supermarket, or food processing facility, the H-IM-82C delivers the quality and reliability that Heatcraft is known for, ensuring peace of mind for operators and optimal conditions for stored products.