Heat Controller DMH36TB-1, DMC24DB-1 manual Air Purging and Evacuation, Checking method

Page 25

Air Purging and Evacuation

Air Purging and Evacuation

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.

1.Pressure in the system rises.

2.Operating current rises.

3.Cooling(or heating) efficiency drops.

4.Moisture in the refrigerant circuit may freeze and block capillary tubing.

5.Water may lead to corrosion of parts in the refrigeration system.

Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and vacuumed to remove incondensible gas and moisture in the system.

Checkingmethod

Preparation

•Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.

Leakage test

1.Do a leakage test of all joints of the tubing(both indoor and outdoor) and both gas and liquid side service valves.

Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth.

2.After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder.

• Connect the manifold valve(with pressure gauges)

 

 

 

 

and dry nitrogen gas cylinder to this service port

 

 

 

 

with charge hoses.

 

 

Indoor unit

 

CAUTION: Be sure to use a

 

 

 

 

 

 

 

manifold valve for leak testing.

 

 

 

 

The high side manifold valve must

Outdoor unit

 

 

always be kept closed.

 

 

 

 

 

 

• Pressurize the system to no more than 150

 

 

 

 

P.S.I.G. with dry nitrogen gas and close the

 

 

 

 

cylinder valve when the gauge reading

 

 

 

 

reached 150 P.S.I.G. Next, test for leaks with

 

 

 

 

liquid soap.

Manifold valve

 

CAUTION: To avoid nitrogen

Pressure

Lo

Hi

 

entering the refrigerant system in a

gauge

 

 

 

 

 

 

 

liquid state, the top of the cylinder must be

 

 

Charge hose

 

higher than its bottom when you pressurize

 

 

 

 

 

 

 

the system. Usually, the cylinder is used in

 

 

 

 

a vertical standing position.

 

 

Nitrogen gas

 

 

 

 

 

 

 

 

cylinder(in vertical

 

NOTICE : Leakage test shoud be done for

 

 

standing position)

 

 

 

 

 

each indoor unit connection set, separately.

 

 

 

 

 

 

 

Installation Manual

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Contents DMC24DB-1, DMH24DB-1 DMC36TB-1, DMH36TB-1 Table of Contents 24k Installation Parts Provided36k Be sure not to do Be sure to follow the instruction Safety PrecautionsThere is risk of fire, electric shock, explosion or injury Moisture may condense and wet or damage furnishings Could cause personal injury Personal injuryThere is risk of fire or product failure Oxygen deficiency could occurThere is risk of electric shock There is risk of fire or electrical shockThere is risk of electrical shock There could result in personal injury and product damageAvoid personal injury It may cause a problem for your neighborsThis could damage your health There is risk of damage or loss of propertyThere is risk of personal injury It is not sanitary and could cause serious health issuesThere is risk of personal injury and failure of product Be careful and avoid personal injuryRooftop Installations Installation of Indoor, Outdoor UnitSelect the best location Indoor unitMulti Piping Type Piping length and elevation24k 36k Drill a hole in the wall Fixing Installation PlateCut the pipes and the cable Flaring workBurrs removal Putting nut onCheck Connecting the PipingIndoor Foamed polyethylene or equivalent is recommendedOutside diameter Torque Indoor unit installationKg .mlbf .ft Flare nut PipesOpen-end wrench fixed Flare nut Wrench Indoor unit SpacerIndoor unit tubing Piping hole Piping forBad case Good caseOutside diameter Torque OutdoorConnect the cable to the Indoor unit Connect the cable to the Outdoor unit Power supplyWith the screw How to connect wiring to the terminals Circuit Breaker MOC rating on the unit rating plate To check the drainage Checking the drainageDrain piping Pour a glass of water on the evaporatorSeal a small Opening around Pipings with Forming the pipingGum type sealer Checking method Air Purging and EvacuationEvacuation Repeat evacuation procedure for each indoor unitFinishing the job Max total ChargingAdditional Test Running Prepare remote controlEvaluation of the performance Heat CONTROLLER, INC
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DMC24DB-1, DMH24DB-1 DMC36TB-1, DMH36TB-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.
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