By Olympe Leclerc. wiring. Published at Tuesday, March 26th, 2019 - 14:45:54 PM.
One other way to wire multiple zones is with the use of zone valves. A zone valve is a motorized solenoid valve with an end switch. The thermostat for each zone is wired through a 24-V transformer to the zone valve. A mechanical end switch is wired to the thermostat terminals of the boiler operating controls. When choosing a transformer for zone valves, make sure that the VA (volt amps) rating of the transformer is sufficient to run the zone valves attached to it.
Tele players often ask about adding series wiring to their instruments—a mod that lets you access a powerful tone when you engage both pickups. On a stock Tele, the pickups are connected in parallel when you use them together, but if you run them in series instead, the resulting output is hotter and louder, and this makes it much easier to drive your amp into saturation. If you’re craving burly Tele tones, series wiring will deliver. There are several ways to mod your Telecaster for series wiring. The most common approach is to replace the standard 3-way pickup selector with a 4-way switch. This keeps the three familiar switching positions untouched and simply adds a new sound in switching position #4. This is my preferred method, and I think it’s the most useful Telecaster mod ever.
The HVACR Wiring Troubleshooting Trainer Program is a module designed to help teach HVACR students how to troubleshoot heating and cooling control systems. It contains an interactive computer program, instructor’s manual, student workbook, student assessment, PowerPoint presentations, and the instructions on how to build instructor and/or student hands-on trainers. This module training program covers five areas of study: symbols, sequence of operation, series and parallel circuits, relays (coils and contacts), and troubleshooting. The interactive computer program uses a basic heating and cooling control ladder wiring diagram. The module can be taught in a four-hour block time frame or spread out over the instructor’s whole lesson plan.
Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do – the facts that he gathers may or may not point to the obvious cause of the problem or the best solution. But Bob has something that no one else has. He recalls his long-time HVACR mentor and imagines him accompanying him as “Btu Buddy,” someone who reminds him to take time to stop and think before rushing to judgment, helping keep him on the right track, even with facts that are confusing. The weather was really cold and a call came in from a new customer that the system in a small office building was not heating properly. It was a new customer.
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