Description
The Cleveland Controls NS2-1239-00 Single pole, single throw pressure switch is used to measure pressure in HVAC systems. It is triggered when the sensed pressure is at 0.70 inches of water column. It is installed in air handlers, furnaces as well as other testing equipment in HVAC to check for airflow or filter blockage. When the fan runs and provides adequate airflow 0.70” WC, the switch opens to allow the heating or cooling cycle to occur. It also actively avoids the system being on, while there is no proper airflow in the case which may result in overheating or conking of the system. As a basic and straightforward equipment, it satisfies the requirement of basic HVAC system monitoring at a low Expenses.
