by High Performance HVAC | Commercial HVAC |
Portable Load Bank for UPS Testing | Commissioning - This is a portable load bank used for testing small UPS (Universal Power Supply) systems and for other electrical loads. New UPS systems are tested to ensure they operate properly and can hold the designed load whenever a power failure occurs.
It is a way to test the UPS system without hooking up an actual load to the system with the actual load being the computer systems the UPS will power in the event of a power failure.
This testing ensures the UPS equipment will functionally operate after the intended load is hooked up to the UPS system. Included in the test is a time factor on how long the batteries will power the load without utility or a backup generator. On specific construction projects, whether it is new construction or retrofit projects, data centers and telecom facilities go through the commissioning process.
The commissioning process tests all electrical and mechanical devices under normal operation and under full load conditions. Other scenarios are tested such as equipment failure, infrastructure failures such as piping or utility loss, and plans implemented for operational procedures in case these scenarios occur. (more…)
by High Performance HVAC | Technical Reference |
Grounding and Bonding Electrical Systems | NEC Code - National Electrical Code Article 250 is all about grounding and bonding as represented in this photo where electrical systems are grounded and bonded to the buildings steel structure.
There are many different rules in the NEC (National Electrical Code) pertaining to grounding and bonding because grounding and bonding are important for safety reasons. Electricity will take the path of least resistance so if there is a short in the system the grounding system will be the path for the electricity instead of the motor or load that experiences the short. (more…)
by High Performance HVAC | Commercial HVAC |
Building Commissioning is a Systemic Process
Building Commissioning Benefits - The Building Commissioning Guide defines commissioning as a systemic process of assuring verification and documentation, from the design phase to a minimum of one year after construction that all facility systems perform interactively in accordance with the design documentation and intent, and in accordance with the owner’s operational needs including preparation of operating personnel. (more…)
by High Performance HVAC | Gas Furnaces |
White Rodgers Gas Furnace Ignition Control Board
Electronic Ignition Gas Furnace Problems Troubleshooting - Gas furnaces are a prevalent form of heat for homes and businesses, and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace.
Since there are many different types of gas furnaces, it is difficult to cover every single possible gas furnace problem that can occur with a gas furnace in one article. We are going to break this theme “gas furnace problems” down into a series of articles with the first one being gas furnace problems with electronic ignition gas furnaces.
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