by High Performance HVAC | Gas Furnaces |
Electronic Control Board for an Electronic Ignition Furnace
Gas Furnace Troubleshooting Techniques - Electronic ignition for gas furnaces is the modern way for furnaces to light the main burners. Furnace technology has evolved from the standing pilot gas ignition systems. These furnaces continue to be used today, however, there are fewer standing pilot furnaces used today than yesterday. When troubleshooting a system it is important to know which type of ignition system the furnace uses. (more…)
by High Performance HVAC | Gas Furnaces |
Automatic Vent Damper System | Gas Heat Flue Economizer. The automatic vent damper adds efficiency to water heaters and furnaces. The automatic flue damper traps heat in the furnace, boiler, or water heater. It holds heat in and around the heat exchanger instead of allowing it to rise up the flue.
The control voltage from the appliance powers the automatic vent damper. The automatic vent damper has a little motor that powers it to the closed position. It leaves all the heat trapped inside the furnace, boiler, or hot water heater. Prior to the existence of automatic vent dampers, the heat escaped up the flue and vented to the atmosphere. (more…)
by High Performance HVAC | Gas Furnaces |
Gas Furnace Components 3 - Gas furnace ignition controls vary from furnace manufacturer to furnace manufacturer. Some are proprietary and some are from an engineering company that specializes in gas furnace ignition controls. Honeywell being a major manufacturer of controls for HVAC also makes several gas furnace ignition controls.
Gas furnace ignition controls have advanced by leaps and bounds over the last 20 years. The standard was standing pilot ignition. Solid-state ignition controls are safer and more efficient than ignition controls of yesteryear.
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by High Performance HVAC | Oil Heat |
Furnace and Boiler Oil Filters - Oil burner oil filters are important to keep trash out of the burner gun and plugging the nozzle. A dirty filter can also choke the system from firing properly by preventing the correct amount of oil flow from reaching the nozzle. Oil furnace oil filters or oil boiler oil filters should be changed on at least an annual basis. More if the oil or oil tank is of poor quality. It is also recommended that the oil furnace or oil boiler be shut down when oil delivery is made.
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by High Performance HVAC | Gas Furnaces |
Gas Furnace with Drain Pipes to Drain the Condensation.
Furnace Water Leak Condensate Problem - Richard, My furnace is leaking water. It is summertime, so I am not using it for heat except for the blower fan which is hooked up to the air conditioner and the heat. I know the pipes from the outside units run into a box on top of the furnace. I think that is a part of the air conditioner. What can I do to fix the problem if you know what the problem is by my explanation here? Dan
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by High Performance HVAC | Technical Reference |
HVAC Inspections Commissioning - How often have you heard someone complain about inspectors or code officials whose job it is to inspect mechanical, electrical, plumbing, and other trades work for safety and quality workmanship?
One could argue that workmanship or even design can be horrible even if the work passes a code inspection. However, chances are if the trades have any integrity they want the job to look good whether it is for the inspector or whether it is for pride and quality of work. (more…)
by High Performance HVAC | Technical Reference |
Bacharach Combustion Analyzer
Bacharach Combustion Analyzer Furnace Testing - The combustion analyzer is used to test gas and oil furnaces to make sure the combustion process is as efficient as possible. This multi-function HVAC test instrument can also be used to test spaces for carbon monoxide, test building pressure, all in addition to testing the combustion process of the furnace.
The combustion analyzer allows an HVAC technician to test the flue temperature, the amount of oxygen in the furnace flue gases, the amount of carbon monoxide in the flue gases, the amount of carbon dioxide in the flue gases, and the pressure of the flue. All these readings are necessary so the HVAC technician can make adjustments to the burner settings to ensure efficient combustion using the combustion analyzer. (more…)
by High Performance HVAC | Gas Furnaces |
Furnace with Hot Surface Ignition
Hot Surface Ignitor - Whenever we talk about electronic ignition systems in gas furnace ignition systems we must first look at the key components which make these systems work and understand how they work. Hot surface ignitor systems work in various ways.
This all depends on what the electronic ignition manufacturer and design engineer determined in the design. Furthermore, some are direct main burner ignition while others light a pilot, and the pilot lights the main burners.
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by High Performance HVAC | Gas Furnaces |
Gas Furnace Components 2 - Gas Burners - Depending on the type of gas furnace and how the gas furnace was engineered will depend on the type of gas burners. Inshot burners generally shoot a flame into the combustion chamber where an induced draft exists. For sealed combustion chambers a forced or induced draft will exist.
There are burners with precisely drilled holes in them. Then there are slotted gas burners that extend into the combustion chamber and generally have induced draft combustion chambers. However, these can also have forced draft combustion chambers if the combustion chamber is sealed. The size of these holes and slots in gas burners will also depend on the altitude and capacity of the furnace. (more…)
by High Performance HVAC | Boilers |
HVAC Near Boiler Piping Components - HVAC near boiler piping is very important to a good hot boiler loop circulation of the water. Hot water loop piping is key to maintaining good water flow throughout the system. The placement of valves, the circulator pump, and other loop controls are generally installed near the boiler. (more…)
