TXV or Thermostatic Expansion Valve | Refrigeration for HVAC

TXV or Thermostatic Expansion Valve are used in air conditioners and heat pumps to meter refrigerant.

TXV or Thermostatic Expansion Valve

The TXV or Thermostatic Expansion Valve is preferred over other refrigeration metering devices because it only allows a specified amount of refrigerant to flow based on demand. Any type of refrigeration metering device creates a pressure drop in the refrigerant and with a pressure drop of the refrigerant a temperature drop also occurs.

This temperature is necessary to drop the refrigerant down to temperature lower than ambient temperatures inside the structure being cooled. This allows the refrigerant to absorb the heat contained in the air passing over the evaporator coil. (more…)

Basic Heat Pump Maintenance | Maintaining HVAC Systems

Basic Heat Pump Maintenance - A good heat pump maintenance plan will include a thorough check of the refrigeration system, the electrical system, the heat pump controls, and the air filter system of the heat pump. Heat pump maintenance is as important as maintenance on your vehicle. If we fail to take good care of our vehicle then it is more prone to breakdowns whereas if we keep it in good condition with proper maintenance it is more reliable and repairs usually cost less when repairs are needed.

Of course, if you take good care of the heat pump with regular maintenance major repairs will likely never occur and it is possible you will repair free with a good maintenance plan in place for your heat pump. Basic maintenance adds life to the equipment, keeps the equipment running longer adding to the lifespan, and during the overall life will keep the heat pump more efficient.

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Heat Pump Components | HVAC Heating

Heat Pump Components - Heat Pumps are similar to air conditioners with a few extra components. Components added to allow the heat pump to offer both heating and cooling. The two major differences between a heat pump and an air conditioner are the controls and the refrigeration circuit.

While there are many different types of heat pumps and air conditioners the methods and means these two types of heating and cooling systems use are basically the same. (more…)

How to Hook Up a Home Thermostat | HVAC Control

How to Hook Up a Home Thermostat - If you need to install a new thermostat then you have found the right place to learn. Below we will describe to you how to hook up a new digital thermostat. Whether the old thermostat is bad or not if you simply want to replace your old one and hook up a new one. First of all, the first thing you need to take into consideration is to select the right replacement thermostat.

To select the correct replacement you need to know what kind of HVAC equipment you have in your home. Or where you want to hook up the new thermostat.  There are numerous types of air conditioner and heating combinations. Therefore, to simplify things, we will cover a basic gas furnace and air conditioner split system HVAC system. For hooking up a new thermostat similar systems to the air conditioner/gas furnace combination would be: (more…)

Variable Speed GE ECM Motors | HVAC Control

Variable Speed GE ECM Motors - When you look at buying a new HVAC system it will surely arise when the HVAC salesman or HVAC contractor who comes to give you an estimate will show an HVAC system that has a variable speed motor or the GE ECM (Electronically Commutated Motor) installed in it. These are systems that have a higher efficiency rating than the HVAC equipment that has the typical electric blower or condenser fan motor. (more…)

Boiler Water Loops | Hydronic Piping Systems

hot water boiler piping
Boiler Water Loops - In boiler water loops there are different ways to arrange the piping depending on the budget at installation time and how efficient and balanced you want the hydronic piping system to be when the job is complete. Some piping arrangements require more pipe upon initial installation. However, they are easier to balance and provide even heat throughout all the radiators or baseboards.
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Changing a Standing Pilot Boiler to Electronic Ignition – Conversion Upgrade

Changing a Standing Pilot Boiler to Electronic Ignition

The Honeywell Y8610U Intermittent Pilot Retrofit Kit

Changing a Standing Pilot Boiler to Electronic Ignition - Conversion Upgrade - How many times have you spent time in the cold trying to light a pilot light on a standing pilot gas system?

I am certain if you are a service technician, then the previous sentence can be qualified with “How many frustrating times.” You go on a service call and find the old standing pilot gas system. Whether it is a water heater, furnace, or boiler, and you find the thermocouple is bad. Or some other reason that is keeping the pilot light from staying lit.

You clean the pilot burner and replace the thermocouple and walla…………..it lights and stays lit. The magical standing pilot works again. There is another option for you and your customer. And while it is not recommended in every situation it can help eliminate those pesky repeat service calls.

Calls where the pilot continues to go out for whatever reason? The sudden ghostly draft is one of the big reasons. Honeywell produces an electronic ignition retrofit kit that is ideal for residential and light commercial gas furnace systems. Gas systems that are eligible for an upgrade from standing pilot to electronic ignition (covers BTU ratings up to 270,000).

Honeywell Y8610U6006 Gas Valve Intermittent Pilot Retrofit Kit Available here

Changing a Standing Pilot Boiler to Electronic Ignition | Conversion Upgrade

The Y8610U Intermittent Pilot Retrofit Kit from Honeywell comes complete. It comes with a gas valve (Natural Gas to Propane (LP)) conversion kit in the box), ignition control, electronic spark assembly with flame sensor, ignition wire, and wiring harness. A seasoned technician will find wiring this a snap. Out of the box the gas valve can be used with either ½” or ¾” pipe so this will work with little changes made to the gas pipe.

From Standing Pilot to Electronic Ignition - Changing a Standing Pilot Boiler to Electronic Ignition

I recently upgraded my boiler from a standing pilot to this electronic ignition control. It reminded me of all those standing pilot furnaces and boilers out there that have been changed to electronic ignition by me when I was working in the field. I had recently purchased a new – old house (1920) that has a steam boiler in the basement. All summer, I kept thinking about upgrading the boiler to electronic ignition from a standing pilot.

Especially after a nasty springtime encounter with lighting the pilot light that reminded me of all the frustrating experiences. Finally, fall arrived, and it was time to start up the old boiler so we can have some heat. That is when I ordered the Y8610U Intermittent Pilot Retrofit Kit.

Throwing the Switch - Changing a Standing Pilot Boiler to Electronic Ignition

The intermittent pilot retrofit kit arrived, and immediately, I took it down to the boiler to make the new introduction. About an hour and a half later, I threw the switch for the main power. The boiler and the new electronic ignition module came to life by sparking. I couldn’t see it, but I could hear it.

About a second or two of sparking and I heard the pilot fire. A second later, the main burner’s fired and the old boiler (approximately 30 years old) got a taste of modern technology. Another hour in the basement was taking care of the boiler and doing annual boiler maintenance, and I can feel comfortable. Comfortable with the reliable heat this winter and the colder days of fall and spring.

Installation Made Easy by Honeywell

The manifold side of the gas valve is a ½ inch, but the kit comes with a ¾ inch flange if the manifold side of the gas valve requires ¾ inch. The gas supply side of the gas valve is a ¾ inch, but Honeywell includes a ¾ inch to ½ inch reducer bushing.

That makes it possible to use the include gas valve for either ¾ inch pipe or ½ inch black iron pipe. The most difficult part of the installation for me is usually not the piping or even the wiring but getting the pilot burner in the correct position to light the main burners.

The pilot burner is usually installed in a tight space, and you have to get it exactly right, so the main gas burners light right away when the main valve in the gas valve opens to feed gas to the main burners. We do not want any “whoosh” main burner ignition.

That means the pilot light is too far away from the main burner. That allows gas build-up, which can be dangerous. Make sure you get the pilot light in the recommended position per the manufacturer’s recommendations or guidelines.

Installation Tips

A few installation tips and features include the control only needs to be supplied with 24 VAC – no line voltage needed – you tap into the 24-volt transformer that should be with the boiler. Make sure you wire through all the safeties, so the control loses power when one of the safeties trips.

When the controller loses power, the burner shuts down. Always follow all the instructions when installing anything. Good luck with any future upgrades you decide to make concerning this retrofit ignition control kit.

Honeywell Y8610U6006 Gas Valve Intermittent Pilot Retrofit Kit Available here

High Performance HVAC

Changing a Standing Pilot Boiler to Electronic Ignition

Ductwork Integrity and Insulation | HVAC Airflow

Ductwork Integrity & InsulationDuctwork Integrity and Insulation - So you are having a new HVAC system installed and you selected a system that is high efficiency and you want to get the most out of it. Have you looked at or has the HVAC contractor looked at the ductwork and determined if it is good enough for the high-efficiency system.

A good HVAC contractor would look at the ductwork to make sure it is adequate and sized properly for the new system. This is often done as the HVAC contractor wants to ensure that the new system is properly matched to the HVAC ductwork lest the system not work as it should. Beyond that, the most overlooked part of the ductwork is the ductwork integrity.

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Window Unit Air Conditioners Heat Pumps | HVAC Portable Units

Window Unit Air Conditioners Heat Pumps
Window Unit Air Conditioners Heat Pumps – First of all, window unit air conditioners are a popular way of providing cooling in small to medium-sized rooms. Window unit air conditioners are easy to install. They usually only require someone with the strength to lift the unit into a window and secure it. Then you plug it in and turn it on. It’s that simple and is the closest thing to plug-and-play air conditioning you can find. (more…)

Natural Gas Properties and Furnace Heating Efficiency

Natural Gas Properties and Furnace Heating Efficiency

Natural Gas Regulators

Natural Gas Properties and Furnace Heating Efficiency - Natural Gas is a popular fuel used for heating systems in America and other countries. If we look at the properties of natural gas and the heating efficiency of natural gas furnaces we will see that natural gas furnaces lose efficiency because of what is contained in natural gas as it is delivered to your home for consumption by your natural gas furnace.

Natural gas in its raw form coming straight from the ground needs to be refined to remove impurities that should not be contained in natural gas. As you read below you will see that in the refining process moisture is removed from the natural gas however during the refining process some of the moisture in the natural gas remains and therefore this affects the efficiency of your natural gas furnace.
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