Damper Actuator: Working Principle and Applications
What a damper actuator is made of, how the motor-to-shaft gear train turns 0-90 degrees into blade position, the three control modes, and where these actuators are used.
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Category: Technical Guide
Industry knowledge, product guides and company updates from DANRENS.
What Is an HVAC Control System? Purpose and Components
An HVAC control system senses, compares and acts. What each layer does, the signals that connect them, and how to diagnose valve automation faults.
More →Discussion on the Suitability Selection of Air-Conditioning Systems for Large Complex Projects
How to select air-conditioning systems for large complex projects: cold/heat source and distribution arrangements, water-loop heat pump scheme comparison, water systems, and the energy-savi […]
More →Electric Thermal Actuator Installation: Wiring, Mounting and Clearances
How to install a normally closed electric thermal actuator: wiring the switched live and neutral, vertical mounting onto the manifold port, hand-tightening the union, and the stroke, ambien […]
More →Central AC Thermostat Installation and Wiring: Mechanical vs. LCD Types
How to install and wire mechanical and LCD central AC thermostats: the three-step installation sequences, terminal-by-terminal wiring, the four fan coil valve and damper configurations, and […]
More →Electric Ball Valve Troubleshooting: Common Problems and Solutions
Diagnose and fix common electric ball valve faults: reversed open/close position, actuator not moving, thread cracks, and partial stroke.
More →Motorized Ball Valve Installation: 6 Field Precautions
Six essential installation precautions for motorized ball valves in HVAC water systems: actuator position, thread type, cleanliness, orientation and insulation.
More →Field Guide: Commissioning a BACnet MS/TP Damper Actuator
Most "the actuator won't talk" calls on a BACnet MS/TP trunk trace back to three things: wiring, addressing, or baud rate. This field guide walks through commissioning a BACnet MS/TP damper […]
More →Indoor Air Quality and Ventilation Control: A Practical Guide
Comfort is more than temperature. Ventilation, filtration, and humidity control are what keep indoor air healthy.
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