EATB28-50 - Heat exchanger Vevor - Free user manual and instructions

Brand	Vevor
Model	EATB28-50
Product Type	Brazed plate heat exchanger
Dimensions (L x W x H)	301 x 126 x 131 mm
Net Weight	8.52 kg
Maximum Working Pressure	3.0 MPa
Number of Plates	50
Connection	4 x 1-1/4" NPT (male thread)
Primary Side Volume (T1-T2)	1.4 L
Secondary Side Volume (T3-T4)	1.288 L
Plate Material	Stainless steel, copper brazing
Operating Temperature	Suitable for compatible fluids (water, glycol, steam, etc.)
Application Areas	Heating, air conditioning, domestic hot water production, industrial processes
Installation	Vertical mounting, wall or frame support, use threaded or brazed connections
Maintenance and Cleaning	Regular backflushing; chemical descaling if needed with organic acids (formic, citric); rinse with clean water for 30 minutes
Safety	Antifreeze protection: thermostat, flow meter, drain when stopped, add antifreeze; use a 40-70 mesh strainer to prevent clogging
Fluid Compatibility	All refrigerants except ammonia, chlorine; demineralized water, oil, steam, organic solvents, gas; pH 6-8
Connection Torque	400 Nm for 1-1/4" NPT threads
Repairability and Spare Parts	Heat exchanger plates and gaskets not supplied separately; technical support via www.vevor.com/support
Warranty	Electronic warranty certificate available at www.vevor.com/support

Frequently Asked Questions - EATB28-50 Vevor

What is the difference between models EATB28-50 and EATB28-30?

The EATB28-50 model has 50 plates compared to 30 for the EATB28-30. It is therefore larger (301x126x131 mm vs 301x126x85 mm) and heavier (8.52 kg vs 5.85 kg). Its thermal capacity is higher.

How to correctly install the EATB28-50 heat exchanger?

Installation must be vertical. Use 1-1/4" NPT threaded connections with a tightening torque of 400 Nm. To avoid vibrations, install a rubber cushion between the heat exchanger and the support. If the pipes are long, use corrugated pipes or dampers.

What fluids can I use with this heat exchanger?

Suitable for water, glycol water, oil, steam, organic solvents, and gases (except ammonia and chlorine). The pH must be between 6 and 8. For refrigerants, no problem except ammonia.

How to prevent freezing of the heat exchanger in winter?

Use an antifreeze protection thermostat and a flow meter to maintain a constant water flow. If the device is not in use, drain the water. You can also add antifreeze (glycol) to the circuit. Avoid operating the unit if the pump is stopped.

How to clean the heat exchanger if it is clogged?

For light obstructions, perform a backflush with clean water. For scale, use a chemical descaler compatible with copper and stainless steel, such as formic or citric acid. Circulate the solution counterflow for 24 hours, then rinse thoroughly with clean water for 30 minutes.

What tightening torque is required for the connections?

For 1-1/4" NPT threaded connections, the recommended tightening torque is 400 Nm. For fixing bolts, use 15 Nm for M8, 18 Nm for M10, 22 Nm for M12, etc. Do not exceed these values to avoid damaging the heat exchanger.

Can I braze the connections instead of threading them?

Yes, copper brazing is possible. Clean the surface, apply flux, use 40-50% silver brazing rods, and heat to a maximum of 650°C. Cool with water and inject nitrogen on the refrigerant side to prevent oxidation.

How to size a heat exchanger for my application?

Use the selection form provided in the manual. Enter the desired power, the maximum pressure drop (50 kPa recommended), the inlet/outlet temperatures and the flow rates of the two fluids. If the power is unknown, indicate the flow rates and temperatures.

Where can I find the full manual and technical support?

The full manual is available for download at notice-facile.com. For any technical questions, contact Vevor via www.vevor.com/support. You will also find the electronic warranty certificate there.

What to do if the heat exchanger leaks at the plates?

A leak may be due to freezing, overpressure, or scaling. First check the gaskets and connections. If the plates are damaged, the heat exchanger is not user-repairable: contact Vevor technical support for a replacement under warranty if applicable.

USER MANUAL EATB28-50 Vevor

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PLATE EXCHANGER

Model: EATB28-30/EATB28-50/EATB28-80/EATB28-100 EATB12-30/EATB12-40/EATB12-60

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent estimate of savings you might benefit from buying certain tools with us compared to top brands and does not necessarily mean to cover all categories of tools offered. We kindly remind you to verify carefully when you are placing an order with us that you are actually saving half in comparison with the top major brands.

Model: EATB28-30/EATB28-50/EATB28-80/EATB28-100 EATB12-30/EATB12-40/EATB12-60

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Have product questions? Need technical support? Please feel free to contact us:

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This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you if there are any technology or software updates on our product.

Parameter List

Model	Dimension (mm) (L1*A1*H)	Maximum Working Pressure (Mpa)	Panel Quantity (pcs)	Connector (Q1Q2Q3 Q4)	Net Weight (kg)	Side Volumen (Q1-Q2/Q3-Q4) (L)
EATB 28-30	301*126*85	3.0	30	4*1-1/4"NPT	5.85	0.84L/0.728L
EATB 28-50	301*126*131	3.0	50	4*1-1/4"NPT	8.52	1.4L/1.288L
EATB 28-80	301*126*201	3.0	80	4*1-1/4"NPT	12.51	2.24L/2.128L
EATB 28-100	301*126*248	3.0	100	4*1-1/4"NPT	15.2	2.8L/2.688L
EATB 12-30	190*76*85	3.0	30	4*3/4"NPT	2.1	0.24L/0.208L
EATB 12-40	190*76*109	3.0	40	4*3/4"NPT	2.5	0.32L/0.288L
EATB12-60	190*76*159	3.0	60	4*1/2"G	3.3	0.48L/0.448L

Part List

Model	Picture	EATB28-30/50/80/100	EATB12-30/40/60
Plate Exchanger		1	1
Installing Support		2	2

Security & Warnings

1. This product should be used for welding spigots when using to avoid refrigerant leakage.
2. If undissolved solids like sand, weeds, leaves, and other fibers are in the water, the channels are easily blocked; we recommend using a 40~70 mesh strainer to avoid blocking. 3. Any heat exchanger could freeze up when the temperature is zero. Freezing up inside the heat exchanger will result in structural damage and leaking. If leaking happens in the evaporator, every compressor could be destroyed. In order to avoid freezing: * Use a freeze protection thermostat and flow switch to guarantee consistent water flow before, during, and after compressor operation. * Avoid operation of the unit during pump downtimes. Discharge the water when the exchanger is left unused and keep heating the water in use. * Use antifreeze when the evaporating temperature is close to freezing. Adding glycol or other antifreezing agents in the water is recommended.
3. Cleaning: Regular reverse flushing in situ is the simplest option. However, if scaling has occurred, chemical cleaning will be necessary. Clean with detergents for fatty deposits (without chlorine), for he

Fouling: use chemicals compatible with copper and stainless steel, such as formic acid, citric acid, or any other organic acids. Use a weak acid solution pumped through the heat exchanger in reverse flow direction at approximately twice the normal flow rate. Remember that the acid should be circulated in reverse flow for usually 24 hours. After completion of the cleaning process, it is important that the unit is flushed with clean water for at least 30 minutes.

5. Suitable Medium:

* Any refrigerants except ammonia, chlorine, and DI water * Water, vapor * Oil, organic solvents, gas * pH 6~8

*Please pay attention to the operating temperature and design of the PHE.

Operation

1. Screw thread link

In order to avoid danger to the components, there will be no link between the BPHE and the piece; you need to use a screw airproof circle to airproof. Use the torque wrench and refer to the data table to do the screw thread link.

Model	Torque
EATB12-30/40/60	《170 Nm
EATB28-30/50/80/100	《400 Nm
2. Copper brazing linkClean the weld surface and brush the flux, using 40-50 silver-based rods for welding; the maximum temperature does not exceed 650 (1202F); cooling water into the water-side and in the vicinity of t welding department to impose an appropriate cooling and the refrigerant-side injection with Nitrogen to avoid oxidation.
3. Bolt FasteningIn order to avoid excessive torque lead to bolt come off and t cover plate deformation, using the measuring wrench according t data listed on the table to fasten the bolt.

Please refer to the nameplate's connected tube sketch and installation drawing. Moreover, the customer should configure a connected tube accurately, and install the brazed plate heat exchanger vertically.

If the pipeline has vibration, longer pipe, and higher thermal expansion, which will affect the brazed plate heat exchanger. You'd better consider adopting the following devices: install rubber pad between the brazed heat exchanger and bracket; compressor with shock absorber, a corrugated pipe, or other damping devices when straight pipe is used.

5. Working Schematic Diagram

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

6. Exchanger Selection

Note: The data in ( ) is the default value; you may fill in this form with appropriate data. If the heating capacity is indeterminate, please provide the Flow Rate value within the dotted line.

Exchanger Selection

Capacity

Max dp (50kPa)

Fluid 1

Side 1 Inlet Temp.

Side 1 Outlet Temp.

Flow Rate

Fluid 2

Side 2

Inlet Temp.

Side 2

Outlet Temp.

Flow Rate

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The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

NEED HELP? CONTACT US!

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

6. Note on

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The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

electronics www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

NEED HELP? CONTACT US!

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

Technical support and e-warranty certificate www.vevor.com/support

PLATE HEAT EXCHANGER

Model: EATB28-30/EATB28-50/EATB28-80/EATB28-100 EATB12-30/EATB12-40/EATB12-60

NEED HELP? CONTACT US!

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.

The surfaces of the corrugated plates pointed by arrows are pressed close and welded together around the angle holes, therefore the liquid in the angle holes couldn't get into the channels here.

Correspondingly, there is a certain gap between the relative corrugated plates pointed by arrows here. They are not welded together and thus leave an opening for the liquid in the angle holes to get in.