Heat Controller BHD-501-B, BHD-651-C, BHD-301-C HOW to Replace the Refrigeration System

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3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM

1.When replacing a refrigeration component, be sure to discharge the refrigerant system by using a refrigerant recovery system.

2.After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes.

3.Solder service valves into the pinch-off tube ports, leaving the valves open.

4.Solder the pinch-off tubes with service valves.

5.After doing the above procedures, the valve must be closed and left in place on the system for any subsequent procedures.

6.Evacuate as follows.

1)Connect the vacuum pump, as illustrated in Figure 31A.

2)Start the vacuum pump, slowly open manifold valves A and B two full turns counterclockwise and leave the valves open.

The vacuum pump is now pulling through valves A and B to valve C by means of the manifold and entire system.

CAUTION

If high vacuum equipment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counterclockwise. This will keep oil from foaming and being drawn into the vacuum pump.

3)Operate the vacuum pump for 20 to 30 minutes, until 600 microns of vacuum are obtained. Close valves A and B, and observe vacuum gauge for a few minutes. A rise in pressure would indicate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vacuum pump.

4)Remove the hose from the vacuum pump and place it on the charging cylinder. See Figure 31B. Open valve C.

Discharge the line at the manifold connection.

5)The system is now ready for final charging.

7.Recharge as follows :

1)Refrigeration cycle systems are charged from the High-side. If the total charge cannot be put

in the High-side, the balance will be put in the suction line through the access valve which you installed as the system was opened.

2)Connect the charging cylinder as shown in Figure 31B.

With valve C open, discharge the hose at the manifold connection.

3)Open valve A and allow the proper charge to enter the system. Valve B is still closed.

4)If more charge is required, the high-side will not take it. Close valve A.

5)With the unit running, open valve B and add the balance of the charge.

a.Do not add the liquid refrigerant to the Low- side.

b.Watch the Low-side gauge; allow pressure to rise to 30 lbs.

c.Turn off valve B and allow pressure to drop.

d.Repeat steps B and C until the balance of the charge is in the system.

6)When satisfied the unit is operating correctly, use the pinch-off tool with the unit still running and clamp on to the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use sil-fos solder and solder pinch-off tube closed. Turn off the unit, allow it to set for a while, and then test the leakage of the pinch-off connection.

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Contents Models BHD-301-C Heat CONTROLLER, INCContents Preface FeaturesItems SpecificationsControl Type Auto Defrost Micro SwitchHOW does the Dehumidifier WORK? Location for the DehumidifierHumidity Controller Circuit Diagram Wiring Diagram Bucket and AIR Filter Front Case and Rear GrilleCabinet and Control BOX Control Parts Power Cord AssemblyControl Panel Coil ASSEMBLY, Solenoid BHD-501-B, BHD-651-CShroud and Drain PAN FAN and MotorCONDENSER, Evaporator and Capillary Tube Refrigerating CycleHOW to Replace the Refrigeration System Pulling Vacuum Troubleshooting Guide Condition Cause Remedy Exploded Views Model BHD-501-B Model BHD-651-C Replacement Parts List W0CZZ Capacitor W0CZZ Memo Memo Heat CONTROLLER, INC

BHD-651-C, BHD-501-B, BHD-301-C specifications

The Heat Controller BHD series stands out in the realm of modern heating solutions, offering a perfect blend of efficiency, innovation, and user-friendly features. This series includes the BHD-501-B, BHD-651-C, and BHD-301-C models, each tailored to meet varying heating requirements while ensuring optimal comfort.

The BHD-501-B model is engineered with advanced heating technology that emphasizes energy efficiency. This unit features a programmable thermostat that allows users to set specific heating schedules, ensuring that energy is not wasted when the space is unoccupied. Its compact design makes it ideal for smaller spaces, while its robust heating capability can rapidly warm up a room, making it a reliable choice for those chilly days.

Moving on to the BHD-651-C, this model takes comfort to the next level with its enhanced heating capacity and innovative features. It is equipped with smart technology that can be controlled remotely through a mobile app. Users can adjust settings, monitor energy usage, and receive alerts, giving them unprecedented control over their heating system. Additionally, the BHD-651-C includes safety features such as overheat protection and a tip-over switch, ensuring peace of mind when in use.

The BHD-301-C model is perfect for users looking for a blend of versatility and performance. It boasts an oscillating feature that helps distribute heat evenly across the room, eliminating cold spots. With multiple heat settings, this model allows users to customize their heating preferences based on the environment and personal comfort levels. Moreover, its quiet operation ensures that it won’t disturb the tranquility of your home, making it suitable for bedrooms, offices, or other quiet spaces.

All models in the BHD series are designed with portability in mind, featuring lightweight constructions and easy-to-grab handles. This allows users to move the heaters effortlessly from one room to another. Furthermore, they are built with a modern aesthetic that blends seamlessly into any interior decor.

In conclusion, the Heat Controller BHD series—BHD-501-B, BHD-651-C, and BHD-301-C—brings together advanced features, smart technology, and user-friendly characteristics, making them an excellent choice for all heating solutions. With their focus on efficiency and comfort, these models represent a significant advancement in home heating technology. Whether you need a compact heater for a small space, smart connectivity, or an oscillating unit for even heat distribution, the BHD series has you covered.
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