2-way, 3-way Valve

(3) Gas Charging

(After Evacuation)

Indoor unit

Liquid side

 

Open

Outdoor unit

2-Way

valve

Gas side

Open

3-Way

valve

Indoor unit

Liquid side

 

Open

2-Way

valve

Gas side

Open

3-Way

valve

Charging

manifold gauge

cylinder

 

Low-handle

Check valve (OPEN)Hi- handle (OPEN)

• Procedure

1.Connect the gauge to the charging cylinder.

-Connect the charge hose which you disconnect- ed from the vacuum pump to the valve at the bottom of the cylinder.

-If you are using a gas cylinder, also use a scale and reverse the cylinder so that the system can be charged with liquid.

2.Purge the air from the charge hose.

-Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air. (Be careful of the liquid refrigerant). The procedure is the same if using a gas cylinder.

3.Open the low handle on the gauge and charge the system with liquid refrigerant.

-If the system can not be charged with the speci- fied amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle; however, one time is not suffi- cient, wait approximately 1 minute and then repeat the procedure(pumping down-pin).

4.Immediately disconnect the charge hose from the gas side valve's service port.

This is different from previous procedures. Because you are charging with liquid refrigerant from the gas side, absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner.

- Stopping partway will allow the gas to be dis- charged.

-If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose.

5.Mount the valve stem nuts and the service port nut.

-Use torque wrench to tighten the service port nut to a torque of 1.8 kg.m.(4.2kg.m/5.5kg.m.)

-Be sure to check for gas leakage.

Service Manual 69

Page 69
Image 69
Heat Controller DMH24DB-1, DMC24DB-1 manual Gas Charging, After Evacuation, Connect the gauge to the charging cylinder

DMC24DB-1, DMH24DB-1 specifications

The Heat Controller DMH24DB-1 and DMC24DB-1 units stand out in the realm of climate control solutions, combining advanced technology with user-friendly features to enhance indoor comfort. These air conditioning systems are designed to provide efficient cooling and heating for both residential and commercial spaces.

One of the main features of the DMH24DB-1 and DMC24DB-1 is their inverter technology. This cutting-edge technology allows the units to adjust the compressor speed according to the cooling demands of the space, leading to significant energy savings. By operating at variable speeds instead of a fixed setting, the inverter provides a more consistent temperature, reduces wear and tear on components, and minimizes energy consumption, which can translate to lower electricity bills.

Both models offer a sleek and modern design, making them not only functional but also aesthetically pleasing. The indoor units are designed for easy placement in various environments and can blend seamlessly with any decor. In addition, they are relatively quiet during operation, with low noise levels that enhance indoor comfort without disturbing daily activities.

Another notable feature is the integrated smart control system that allows users to operate the units via a smartphone or tablet. This capability offers the convenience of adjusting settings from anywhere, ensuring that your space is always at the desired temperature when you arrive home or the office. The app can provide insights into energy consumption, allowing users to make informed decisions about their heating and cooling usage.

The DMH24DB-1 and DMC24DB-1 models also boast efficient filtration systems that help improve indoor air quality. The filters are designed to capture dust, pollen, and other allergens, contributing to a healthier living or working environment. This is particularly important for individuals with allergies or respiratory issues.

With a variety of cooling and heating modes, these units can cater to different user preferences and seasonal demands. Features like turbo mode are designed to quickly bring a space to the desired temperature, while the eco-friendly refrigerant helps reduce environmental impact.

In summary, the Heat Controller DMH24DB-1 and DMC24DB-1 units are high-performance air conditioning systems equipped with advanced technologies and practical features, making them an excellent choice for anyone seeking efficient and reliable climate control solutions. Their energy efficiency, enhanced air quality, and smart technology integration position them as leaders in the market.