Heatcraft Refrigeration Products BN-LOPTB manual Pipe Hot Gas Defrost

Page 15

3-Pipe Hot Gas Defrost

The hot gas defrost unit coolers conforms to the standard 3-pipe hot gas system using a check

valve assembly, an electrical control to terminate the defrost, and a hot gas solenoid valve. The

check valve assembly transports the hot gas between the drain pan loop and the sideport distributor of the coil. The check valve assembly kit

is available for shipped-loose or factory-installed for an additional cost.

The electrical control option includes an adjustable defrost termination and fan delay control (DTFD) which is standard. An optional

(2) control electrical system is available with one adjustable control for defrost termination (DT)

and one fixed control for the fan delay (FD) for an additional cost. For both the DTFD and DT adjustable controls, the remote bulb position is

with the bulb strapped to the suction line to insure a complete defrost. The remote bulb is positioned

by the installer. The hot gas solenoid valve must be

ordered separately and will be shipped-loose. The thermostatic expansion valve could be ordered separately and shipped- loose or the thermostatic expansion valve could be factory-installed with a liquid line for an additional cost.

The liquid line is designed for the body styles of the Sporlan SQE, SBF, EG and the Alco HFESC thermostatic expansion valves. The thermostatic expansion valve needs to be selected by the sales engineer. In a typical 3-pipe, multiple evaporator system, the compressor discharge defrosts the evaporator. The liquid/vapor mixture of refrigerant after defrost, however, returns to the common suction line of the system. In order to provide sufficient re-evaporation of the liquid vapor mixture and sufficient heat for defrost, no more than one-third of the system should be defrosted at one time. Some means of control in the 3-pipe hot gas system should be supplied to regulate the large amount of liquid returning to the compressor, refrigerant slugging can otherwise damage the compressor.

HGT 6 FPI

 

Shipped-loose

 

 

Factory-installed

 

 

TXV Liquid Line

 

 

TXV Liquid Line

 

SQE/SBF

EG

HFESC

SQE/SBF

EG

HFESC

035-075

090-160

180-280

50169410

50169411

50169412

50169413

50169414

50169415

50169416

50169417

50169418

52733901

52733902

52733903

52733904

52733905

52733906

52733907

52733908

52733909

HGT 4 FPI

041-080

102-204

235

50169410

50169411

50169412

50169413

50169414

50169415

50169416

50169417

50169418

52733901

52733902

52733903

52733904

52733905

52733906

52733907

52733908

52733909

For hot gas models with the

Shipped-loose

Factory-installed

hot gas loop drain pan only

Drain Pan Loop Check Valve Kit

Drain Pan Loop Check Valve Kit

 

 

When using the hot

HGT 6 FPI

 

 

gas units with a hot

 

 

035-075

50169504

52739601

gas loop drain pan on

0°F applications and

090-160

50169505

52739602

below, an insulated

180-280

50169506

52739603

drain pan is required.

HGT 4 FPI

 

 

 

 

 

 

041-080

50169504

52739601

 

102-204

50169505

52739602

 

235

50169506

52739603

15

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Contents Low profile unit coolers Nomenclature Table of ContentsFeatures & Benefits Model Capacity Fan Data Performance DataModel ADT Air Defrost 60 Hz Model ADT Air Defrost 50 Hz †EC Motor SpecificationsModel ADT Air Defrost 50 Hz Model Shaded Pole MotorModel LET/LLE Electric Defrost 50 Hz † Model LET/LLE Electric Defrost 60 HzModel LET/LLE Electric Defrost 50 Hz Model HGT Hot Gas Defrost 50 Hz † Model HGT Hot Gas Defrost 60 Hz115/1/60 230/1/60 460/1/60 Model HGT Hot Gas Defrost 50 HzApprox. Net Physical DataModel ADT Air Defrost Coil InletEqualizer Port Model HGT Hot Gas DefrostNo. Suction DrainAir Dimensional DataHot Gas Reverse Cycle Kits Shipped-loose Factory-installedPiping for both the suction line and the connection Pipe Hot Gas Defrost Right source. Right parts. Right now Replacement PartsModel LET/LLE Electric Defrost Standard Nozzle SelectionPage Page Brand of Heatcraft Refrigeration Products LLC

BN-LOPTB specifications

Heatcraft Refrigeration Products has consistently pushed the envelope in energy efficiency and quality, and their BN-LOPTB series stands as a testament to their commitment to innovation in the refrigeration industry. This product line caters to a range of commercial and industrial applications, providing reliable temperature control for perishable goods.

One of the main features of the BN-LOPTB is its advanced energy efficiency. Equipped with state-of-the-art refrigeration technology, this system significantly reduces energy consumption compared to traditional refrigeration units. This not only lowers operating costs but also helps businesses minimize their carbon footprint—a crucial consideration in today’s environmentally conscious market.

The BN-LOPTB showcases a robust design that ensures durability and long-term performance. Constructed with high-quality materials, including corrosion-resistant components, it can withstand the rigors of various operating environments. Additionally, its compact footprint allows for easy installation and integration into existing systems, making it a flexible choice for many applications.

Another standout characteristic of the BN-LOPTB series is its advanced temperature control technology. Utilizing sophisticated sensors and smart control systems, these units maintain precise temperature levels, ensuring optimal conditions for stored products. This technology minimizes the risk of temperature fluctuations that can compromise the integrity of sensitive items, making it ideal for restaurants, supermarkets, and food processing facilities.

Moreover, the BN-LOPTB series incorporates noise-reduction engineering, which contributes to a quieter operation than traditional refrigeration units. This feature is particularly beneficial in environments where noise levels must be kept to a minimum, such as in customer-facing areas or small kitchens.

The easy-to-use interface of the BN-LOPTB allows for straightforward adjustments and monitoring, empowering users to optimize their refrigeration solutions without hassle. Furthermore, the compatibility with IoT technologies offers opportunities for remote monitoring and control, enhancing operational efficiency.

In summary, the Heatcraft Refrigeration Products BN-LOPTB series stands out in the market for its energy efficiency, durable construction, advanced temperature control, and user-friendly interface. Ideal for a variety of commercial applications, it represents a forward-thinking solution in the quest for reliable and effective refrigeration.
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