Installation

Installation Tips

•Use a minimum 18 gauge wire for all low voltage connections

•The Beacon II board gets its 24 VAC power supply from a transformer mounted in the electrical end of each evaporator. On 208-240 volt systems the multi-tap transformer is shipped from our factory wired for 240 volts. If your supply voltage is 208 volt you must change to the 208 volt tap on the transformer.

NOTE: On multiple evaporators, since a transformer is in each evaporator, the voltage tap must be set on each evaporator.

•Refer to wiring schematic shipped on units for unit wiring. Schematics in this Installation & Operation Manual are typical wiring schematics only.

•Program ALL slave evaporators as SLAVES.

•Evaporators are shipped from our factory with a preset box setpoint temperature of 35°F for air defrost and -10°F for electric defrost. If your box setpoint temperature requirements are different this must be set using directions outlined under “Room Temperature Control”.

•The suction line temperature sensor MUST be removed from the suction line before brazing the suction tubing. The sensor MUST then be reinstalled on the suction line after brazing is completed and the tubing has cooled. Insulate when finished.

•The low pressure switch time delay relay, located in the condensing unit, must be set to 1 minute.

•If electrical power will be connected prior to evacuation and charging of system, unplug electric expansion valve from board until system is ready to be evacuated, leak tested and charged.

•Some systems may require the crankcase heater be energized 24 hours prior to start-up. The Beacon should be de-

energized for this period by placing it in the SERVICE MODE. This is done by pressing the FORCE SERVICE button twice. To start the system cooling, press the CLEAR button.

•Room sensors must be left connected on ALL evaporators.

•A pressure transducer is installed on the evaporator. Do not leak test system above 150 PSI or damage to transducer could occur. If leak testing must be greater than 150 psig, disconnect the transducer from he suction header and reconnect after testing is complete.

Condensing Unit

The condensing unit control panel contains the relays, contactors, time delay and a terminal block which is appropriately marked to match the low voltage wiring connections. A sensor for outdoor air temperature measurement is installed on the condensing unit.

Condensing unit must be installed using proper refrigeration practices and codes. Make sure there is sufficient clearances around unit for adequate air flow and access.

Evaporator Unit

The evaporator contains the Beacon II controller, electric expansion valve, pressure transducer, distributor, orifice, transformer and three sensors. These components are all factory mounted and wired. The three sensors are factory mounted and provide input to the controller from the following: defrost temp., suction temp., room temp.

Each evaporator unit must be installed using proper refrigeration practices and codes. Make sure the piping is correctly sized and properly routed. It is highly recommended that the liquid and suction lines be insulated. There must also be good clearance around unit. See Heatcraft Refrigeration Installation & Operation Manual for more details.

H-IM-79E specifications

Heatcraft Refrigeration Products has long been a leader in eco-friendly and efficient cooling solutions, and the H-IM-79E is a prime example of their commitment to innovation and sustainability. Designed for commercial use, the H-IM-79E is a high-performance refrigeration unit ideal for supermarkets, convenience stores, and restaurants, where reliable temperature control is essential.

One of the standout features of the H-IM-79E is its energy efficiency. This unit employs advanced compressor technology that optimizes power consumption without sacrificing cooling performance. In addition, it is designed to minimize operational costs, making it an attractive option for businesses looking to reduce their energy bills while maintaining high standards of refrigeration.

The H-IM-79E integrates a robust refrigerant management system that uses environmentally friendly refrigerants, aligning with Heatcraft's commitment to reducing the carbon footprint of their products. This not only helps businesses comply with environmental regulations but also promotes a healthier planet for future generations.

Another key characteristic of the H-IM-79E is its superior temperature stability. The unit is equipped with precision temperature control technology that ensures consistent cooling performance, preventing temperature fluctuations that can compromise food quality and safety. This reliability is crucial in commercial settings where maintaining optimal storage conditions is essential.

The design of the H-IM-79E is also noteworthy. It features a compact footprint, allowing it to fit seamlessly into various commercial environments without taking up valuable floor space. Additionally, the unit is built with durable materials, ensuring longevity and minimizing maintenance needs.

User-friendly interfaces make the H-IM-79E easy to operate. It includes advanced monitoring and diagnostics capabilities, allowing business owners to track performance in real-time and address potential issues before they escalate. The incorporation of smart technologies means that operators can remotely monitor and control the system, providing flexibility and peace of mind.

In summary, the Heatcraft Refrigeration Products H-IM-79E stands out for its energy efficiency, eco-friendly refrigerant use, reliable temperature control, compact design, and user-friendly features. This combination of attributes makes it an ideal choice for businesses that prioritize both sustainability and performance in their refrigeration needs.