Tersh Blissett Archives - HVAC School

Tersh Blissett

Company name: Service Emperor HVAC

Position: Founder & CEO

Tersh Blissett is the founder and CEO of Service Emperor, an HVAC, electrical, and plumbing contracting business. He is also the host of the Service Mastery Podcast and has previous industry experience as a service manager.

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How to Evacuate an AC system, Full Vacuum Procedure

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HVAC School – For Techs, By Techs

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

Phil Barr and Nathan Orr join the podcast to talk about wiring refrigerated cases in commercial spaces, including convenience stores and supermarkets.

Cases may be medium-temp (or high-temp, in some cases) or low-temp. Medium-temp cases can typically defrost on their own during the off cycle, and low-temp cases may have electric or hot-gas defrost to help get ice off the coil at set intervals. Each system has an evaporator (and fans), compressor, condenser, and metering device (often a TXV or EEV), and low-temp refrigeration may have anti-sweat heaters, EPRs, and other components to manage.

Challenges arise when electricians don’t understand the fundamentals of commercial refrigeration, especially as the electrical circuitry relates to the refrigeration circuit components. Time crunches also apply a lot of pressure to electricians and refrigeration technicians. Testing circuits, such as fans and lighting, or using circuit tracers are good ways to get an idea of how an existing system is wired. Labeling wires and breakers and keeping those labels or information in places where others can read them can help you and other electricians in the future.

One of the most common issues happens when technicians or electricians refuse to test out their results to catch their mistakes before callbacks happen. Even seemingly small electrical issues, such as improper lighting, can cause costly losses if product spoils and cannot be sold.

Phil, Nathan, and Bryan also cover:

Changes in central and case control strategies over time
Challenges with retrofits and remodels
Central lighting controls
Mistakes that can be made when labeling wires or breakers
Working against the clock
Terminal blocks, DIN rails, and connectors
Making mistakes and the origin of animosity

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Wiring Refrigerated Cases w/ Nathan & Phil

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Wiring Refrigerated Cases w/ Nathan & Phil

09/14/2023

Bryan Orr

Things to Keep out of the System – Class

09/07/2023

Bryan Orr

ACH (Air Changes Per Hour) – Short #174

09/05/2023

Bryan Orr

Oil Return and Refrigerant Charge in VRV w/ Roman Baugh

08/31/2023

Bryan Orr

Magical Air Cleaning Oxides? – Short #173

08/29/2023

Bryan Orr

Can Filters Capture Viruses? – Short #172

08/22/2023

Bryan Orr

Heat Pumps + Inverters w/ Joey H

08/17/2023

Bryan Orr

Get Air Where it Needs to Go W/ Joey H.

08/10/2023

Bryan Orr

Business Round Table – Tersh, Peterson, Holt

08/03/2023

Bryan Orr

Cap Tubes and Flow Facts – Short #171

08/01/2023

Bryan Orr

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Glide at Static Pressure Sizing Return Grilles Under Pressure

REFRIGERATION TECHNOLOGIES

VENOM PACK CONDENSER PURE CONCENTRATE COIL CLEANER
Venom Pack Condenser Cleaner is a high foaming pure concentrate liquid designed to tackle the toughest soils. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil.

Viper Condensate Pan and Drain Treatment
Viper Condensate Pan and Drain Treatment is a sprayable gel. It coats the pan, p-trap and drain piping with a lubricative film to improve flow and prevent future soil adhesion. The slow dissolving enzyme gel will outperform and outlast conventional tablets and strips.

Nylog Blue Gasket -Thread Sealant for AC/R Systems
One drop of Nylog on your rubber hose gaskets prior to attaching your core tools, hoses or vacuum gauge will assure that things do not bind or leak during evacuation. Derived from refrigeration grade lubricants. Non-hardening, non-drying fluid which bonds tenaciously to many different substrates. Typically, one drop of Nylog can be stretched about three feet before breaking.

NAVAC

Find out more about the Innovative NAVAC line of Vacuum Pumps

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