Chilled Water Coil Cleaning

Preventive maintenance pm of hvac.

Chilled water coil cleaning.

Data from many buildings throughout the united states show that a properly commissioned building with. Cooling coil chilled water dx coil d p engineers duration. So a high pressure system puts out a smaller volume of water. A low pressure high volume approach to coil cleaning is the way to go with thick coil beds.

Limiting the amount of water and chemical used will ensure you do not overwhelm condensate lines. Ahu at hospital that had plugged chill water coil. Steam cleaning hvac coils. Fortunately there s a better way.

Problem is this in in a private jail. Airflow through the coil is very restricted. We are having trouble maintaining duct static. Clean coils drain pans and insuring proper calibration and efficient operation of mechanical components e g.

Using a strong smelling coil cleaner will lead to complaints and issues with the residents. A water coil is a water coil. Preventive maintenance will improve iaq and reduce energy use by removing contaminant sources e g. A lot of that.

Chilled water coils are especially difficult to clean because they are almost always wet. You clean coils with a combination of water volume and water pressure which varies somewhat inversely to one another. Hot water coils are usually 1 or 2 rows and chilled water coils are usually 3 to 12 rows deep. A best way in fact.

Due to this fact they typically attract dirt and additional particles that other coils do not. We have a job that has a large old ahu with a chilled water coil. The following preparation checks works shall be carried out prior to commencement of flushing and cleaning of chilled water system. The coil hasn t been cleaned in decades.

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. Fans motors thermostats and controls. The use of flexible connections on terminal units may provide a easy means of bypassing the terminal coils.

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. Finding the right coil cleaning chemical is just as important. The vast majority of chilled water coils are constructed from either 1 2 od tubes or 5 8 od tubes. Chilled water coils are one of the most common mediums for cooling air.