How it Works
In a time of rising energy prices we need to lower energy consumption while maintaining comfort in our facilities.
The HVAC Service Assistant™ collects all necessary data to detect every fault and degradation found in air conditioning refrigeration cycles and then informs the service technician of the existence of these conditions, the impact of these faults on energy consumption and the available savings potential.
It also suggests effective ways to mitigate these problems. When data collected by the HVAC Service Assistant™ is synchronized to servers, custom reporting permits technicians, facility owners and service managers to document the operating conditions of every unit and every circuit both before and after service measures are performed.
View our reporting overview PDF to see the level of detail available.
Here is how it is done. While connected to a packaged unit, the HVAC Service Assistant™ records 6 key measurements from the units
- Suction pressure
- Liquid pressure
- Suction temperature
- Liquid temperature
- Ambient temperature
- Return air dry-bulb and wet-bulb temperature
- Supply air dry-bulb and wet-bulb temperature
Calculated performance indices are used to identify faults in the unit. From the resulting diagnostic messages, technicians are able to produce better running equipment. The result is:
- Enhanced reliability
- Additional cooling capacity
- Energy efficiency
- Reporting that documents these gains and allows managers, contractors and technicians to understand where the opportunities are and how to achieve the benefits.
The measurements also enable the HVAC Service Assistant™ to calculate the Efficiency Index (EI) and Capacity Index (CI) providing a snapshot of the overall health of a unit.With the EI and CI recorded we are able to quantify the energy cost of operating at reduced efficiency or capacity.
Field Diagnostics processes, protocols and reporting build feedback into every step of the maintenance and repair process. Using the HVAC Service Assistant™ provides objective information to technicians on the rooftop, to their service managers monitoring the work that is being performed, and to end users and facility owners who want to know the true status of their equipment. With the data transmitted from the databases housed on Field Diagnostics servers and accessed via the Service Assistant Online web service, reports are generated to address:
- How efficiently units are running
- How to prioritize retro-commissioning or tune-up measures
- How much lower the electric usage will be when the tune-up is completed
The result is that managers can measure the impact of their service and maintenance expenditures and feel comfortable they are making good decisions, while contractors will feel certain that they are delivering good value to their customers and effectively differentiating themselves from competitors. At the same time, technicians will know that they are doing the right things for their employers and customers and that that fact will be known to the decision maker.
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