Digital Zeus™ HVAC Tool & Instruments Journal

Digital Zeus™ HVAC Tool & Instruments Journal › Edit — WordPress

July 13, 2008 · No Comments

Digital Zeus™ HVAC Tool & Instruments Journal › Edit — WordPress ‏

Categories: AirFlow · Applications · Charts/Diagrams · Commentary · Data Logging · Diagnostics & Analysis · Digital · Digital Manifold Gauges · FieldTest Evaluations · Guides · HVAC PROTech Forum · HVAC PROTech Technical Archives · Infrared · Pressure · Refrigerant Weigh Scales · Refrigerants/Refrigerant Properties · Sensor Technologies · TRUTech Tools · Technology · Temperature · Thermocouples · Transducers · Troubleshooting · Tutorials · manifolds

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Wayne Sirley Heat Pump Guru

How To Order… July 17, 2008

It appears I may have made things on the site a little vague for someone who’s actually interested in ordering a DVD. Let me clear that up. On the right side of this and each page, you’ll see listings under “Pages”. The second down is “Training Videos For the Residential Equipment Service Technician”…click on it. [...]

TROUBLESHOOTING HEAT PUMP SYSTEMS…INDOOR / OUTDOOR TEMPS VS SUPERHEAT W/ FIXED ORIFICE SYSTEMS June 8, 2008

..If you look at a superheat charging chart for a fixed orifice system, you quickly see the required superheat varies with outdoor and indoor conditions. As the outdoor temperatures vary, so does the required superheat…pretty much the same relationship for indoor temperatures. Why? The net force pushing liquid through the metering device is the difference [...]

TROUBLESHOOTING HEAT PUMP SYSTEMS…R-22 VS R-410A April 18, 2008

Unless you’ve been living under a rock for the past several years, you know R-22 is on the way out and R-410A appears to be the manufacturer’s weapon of choice for heat pump and comfort cooling equipment. If you’ve already encountered a 410A system and had a less than pleasant experience, possibly attempting to correct [...]

TROUBLESHOOTING HEAT PUMP SYSTEMS…OPEN CONTROL VOLTAGE CIRCUITS April 16, 2008

One of the more frustrating and difficult situations with heat pump diagnostics is open circuits in the control wiring. There is a logical process to follow when attempting to locate the failure…

TROUBLESHOOTING HEAT PUMPS SYSTEMS…REFRIGERANT LEAK DETECTION DEVICES April 15, 2008

No doubt, my most frustrating service issue has been locating refrigerant leaks. And I’ll be the first to admit it was due to my own ignorance, from simply not doing a little research. I started out with a cold sensor technology electronic detector, bought a second cold sensor electronic detector and eventually concluded electronic detectors [...]

TRUTech Guy RSS Feed

523 556 560 Temperature Measurement July 4, 2008

The Pt100 temperature probe on the Testo 500 series refrigeration instruments has been carefully designed to work under a wide range of applications while providing the fastest temperature response in the industry. The platinum based 4 wire construction of the sensor has exceptionally low mass and is shielded from electrical interference from ghost voltages or static electricity [...]

Testo A/C Applications Guide February 5, 2008

Testo Application Guide The Testo A/C Applications Guide is an invaluable resource for every techncian from entry level to senior.

Getting the most from your Testo 330 or 327 February 4, 2008

Some thought on combustion testing. When performing a combustion test, one of the most important concepts to understand is stability of the combustion process. If the combustion process is not stable, it is not safe. Once a flame is established, the burner should quickly reach study state operation and not be affected by factors external to it. While [...]

Why Test with Digital Instrumentation February 2, 2008

Why test? Making and interpreting measurements is a crucial part of any job involving service, installation, design verification, engineering, or factory support of HVAC/R equipment. When it comes to verifying proper operation of the installed equipment it is critical that measurements made in the field are just as accurate as those made the laboratory. At Trutech we [...]

Trutechtools Training Tidbit February 2, 2008

It has been four years since the US introduction of the first generation of Testo refrigeration products. Our new generation of the Testo line of refrigeration system analyzers (RSA’s) will continue to change the way the HVAC/R world troubleshoots, commissions and services AC & refrigeration systems. Although the first generation of refrigerant products was highly [...]