by High Performance HVAC | Air Conditioning |
What you will learn from
How to Fix Sweating Copper Pipes article:
- One of our readers submitted the question: How to Fix Sweating Copper Pipes - and we will answer her question
- A description of the problem with the sweating pipe
- The name of the copper pipe causing the problem and why it is sweating
- The repair of the sweating copper pipe to stop it from sweating
- What you need to know about sweating pipes and any moisture problem in your house
- Lots of resource and related links to help you learn
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by High Performance HVAC | Air Conditioning |
What you will learn from this article
Air Conditioner Condenser Electrical Components:
- Brief description of air conditioner condenser electrical components
- Code requirements for the condensing unit feeder circuit, fuse box, and wire running to the condenser
- Wiring inside the condenser
- Description of various electrical components inside the condenser
- Lots of resources and related links to help you learn more.
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by High Performance HVAC | Refrigeration |
What you will learn from
What is a Metering Device:
- We will answer the question, “What is a metering device”. We will define the various types of devices and how they work.
- How the metering device is involved in the refrigeration cycle
- A comprehensive list defining the metering devices commonly used in HVAC.
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by High Performance HVAC | Refrigeration |
Evaporator Coil Air Conditioners - the evaporator in air conditioners is responsible for absorbing heat into the coils and the refrigerant. The evaporator in heat pumps and air conditioners is an essential component of vapor compression refrigeration. This is usually done as a result of passing air or water over the evaporator coil where a heat exchange process takes place.
Heat leaves the air or water (whatever medium is used) and is absorbed into the coil and the liquid refrigerant. As more and more heat is absorbed by the evaporator coil and the refrigerant again changes state from a liquid to a refrigerant vapor. By the time the refrigerant leaves the evaporator coil the refrigerant should be all vapor and ready to be received again by the refrigeration compressor. (more…)
by High Performance HVAC | Refrigeration |
Trane Heat Pump Condenser
The Condenser in the Refrigeration Process - The condenser coil receives the high-pressure high-temperature refrigerant vapor from the compressor and immediately begins to remove heat from the refrigerant vapor. As the refrigerant vapor makes its way through the condenser coil more and more heat is removed and the refrigerant vapor changes state from a refrigerant vapor to a refrigerant liquid. (more…)
by High Performance HVAC | Refrigeration |
Variable Speed ECM Condenser Fan Motors are used in condensers for the high efficient models so that the fan speed for the condenser can be modulated according to the load of the system. The ECM variable-speed fan motors are used in condensers that have a modulating compressor. They are also used in condensers that have two compressors or two-stage compressors. The ECM motor adds to the efficiency of the system by modulating the condenser fan motor. The speed matches the compressor that runs based on demand. (more…)
by High Performance HVAC | Air Handlers |
An ECM Variable Speed Blower Motor in a squirrel cage blower
Variable Speed ECM Blower Motors - Variable speed ECM blower motors have become increasingly popular in residential air conditioning and heating systems. From an engineering perspective, these motors increase the efficiency of the systems and offer a whole range of other benefits that help the system and the consumer. Furthermore, comfort is enhanced using ECM blower motors along with noise reduction. (more…)
by High Performance HVAC | Air Conditioning |
Home Humidity Control | Why Its Important for Comfort & Health - Humidity is important to our home and health and it is important to maintain the correct humidity in our homes and workplaces for our health. What is humidity? Humidity is simply little water droplets in the air. Cold air is nearly saturated with these little water droplets because the contents of cold air allow the air to hold more water droplets or humidity. As air is heated it expands and holds less humidity. (more…)
by High Performance HVAC | Thermostats |
Honeywell Chronotherm Plus Thermostat - Trane XL19i Condenser – I have a Honeywell Chronotherm Plus 8624D running a Trane XL19i Air Conditioner with a Trane XV90 Gas Furnace - all installed new in new construction in 2003. Every winter, during the morning warm-up from 66 to 70, the burners stay on for approximately 1.5 hours at 70, then rise quickly to 73 before finally shutting off.
The only way to interrupt the process is to turn the system OFF at the thermostat. The system is on AUTO with the cooling set at 75 for the winter.
I have swapped the thermostats (there are two sets in the house, this is the one in the attic for the second floor) with the same results. I have not swapped the thermostat circuit boards, but I can not see a reason to.
The main floor is on the same schedule but has never done this three-degree burst. I have had three different contractors out, with corresponding charges for thermostat troubleshooting with no luck. Have you ever seen this? Any thoughts? Thanks! (more…)
by High Performance HVAC | Thermostats |
Thermostat Wire - Thermostat wire comes in a bundle with the outer jacket being either brown or white. The bundle can have anywhere from 2 conductors inside the bundle or outer jacket and all the way up 8 or 10 conductors inside the outer brown or white jacket. The bundle for typical wire is 18 gauge solid copper conductors and each has its own outer jacket that is a different color than any of the other conductors in the bundle. These multi-color wires are colored differently for identification from one end of the bundle to the other end of the bundle. It can be purchased in a bundle as follows:
This article refers to conventional thermostat wire which is different than the wire you would have if you have a communicating thermostat.
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