Chilled Water Coil Cleaning

A water coil is a water coil.

Chilled water coil cleaning.

Preventive maintenance pm of hvac. The following preparation checks works shall be carried out prior to commencement of flushing and cleaning of chilled water system. Fortunately there s a better way. Clean coils drain pans and insuring proper calibration and efficient operation of mechanical components e g.

Hot water coils are usually 1 or 2 rows and chilled water coils are usually 3 to 12 rows deep. We are having trouble maintaining duct static. Due to this fact they typically attract dirt and additional particles that other coils do not. Chilled water coils are one of the most common mediums for cooling air.

We can not use a steam jenny because the unit would have to be. There is really no difference between hot water coils and a chilled water coils in construction. Airflow through the coil is very restricted. Fans motors thermostats and controls.

The use of flexible connections on terminal units may provide a easy means of bypassing the terminal coils. Limiting the amount of water and chemical used will ensure you do not overwhelm condensate lines. You clean coils with a combination of water volume and water pressure which varies somewhat inversely to one another. When cleaning indoor coils use tools designed for minimal yet sufficient pressure.

Finding the right coil cleaning chemical is just as important. Cooling coil chilled water dx coil d p engineers duration. Chilled water coils are especially difficult to clean because they are almost always wet. A low pressure high volume approach to coil cleaning is the way to go with thick coil beds.

The vast majority of chilled water coils are constructed from either 1 2 od tubes or 5 8 od tubes. On outdoor coils use a combination of lower pressure and high water volume to thoroughly clean coils. Generally when cleaning a coil most of the dirt get pushed to the middle and for that reason 14 fins inch may not be the best idea after all. Ahu at hospital that had plugged chill water coil.

As warm air passes across the coil and comes in contact with the cold surface of the fins heat then transfers from the air to the water flowing through the tubes both cooling and dehumidifying the air. A best way in fact. Data from many buildings throughout the united states show that a properly commissioned building with. A lot of that.

The coil hasn t been cleaned in decades. Steam cleaning hvac coils. So a high pressure system puts out a smaller volume of water. We have a job that has a large old ahu with a chilled water coil.