No, gas furnaces are specifically designed to burn gas fuel, usually natural gas or propane. Attempting to burn coal in a gas furnace can result in improper combustion, damage to the furnace, and pose safety hazards. It is important to use the appropriate fuel type recommended by the manufacturer for your furnace.
When a typical residential furnace or gas package unit "high limit switch" is found to be bad it is replaced with a new one-not repaired.
an electric furnace runs off of 208/230 Volts while a typical gas furnace runs off of 120 also a gas furnace will have a valve for the gas relay where the gas enters the furnace.
You should not run gas from the furnace to any appliances.
There are a couple common reasons for a pilot light going out. 1. The thermocouple is weak. This is the gold rod that must see the flame in order to keep the gas valve open. it is a safety device that will not let the gas vavle open if there is no pilot. 2. The pilot is dirty and has a yellow flame. If this is the case, it will have to be cleaned. There are books on he market such as forced hot air furnace - troubleshooting and repair that show you how to repair your furnace. You can buy this at amazon.com
A gas furnace is a furnace that operates to keep your house warm with the use of gas. Gas furnaces are very energy efficient furnaces, and are the most common furnaces used in North America.
# Why doe the gas furnace blow black smoke?
One could find information on gas furnace troubleshooting online at Ask. Hvac for beginners is also a great place to look. One could also contact their local gas furnace dealer and/or repairer for gas furnace troubleshooting.
improper repair.... or an offending part banging or rubbing the tank
It depends on the nature of the problem. Many common causes of furnaces problems only require a few simple steps to fix. However, if you smell gas, do not attempt to fix it, just leave immediately and don't turn on any lights or electronics. Here are some how-to guides with some tips: http://homerepair.about.com/od/heatingcoolingrepair/ss/gas_furn_trblsh.htm , http://home.howstuffworks.com/how-to-repair-gas-furnaces.htm , http://www.hometips.com/repair-fix/furnace-problems.html
To hook a propane gas line to a gas furnace, you will need to connect the gas line to the furnace using approved fittings or connectors. It is important to ensure that the gas line is correctly sized for the furnace's gas requirements and that all connections are secure and leak-proof. It is advisable to hire a professional to install the gas line to avoid any safety hazards.
Today's furnace repair technician must be a specialist in several areas. Modern furnaces burn oil, natural gas, wood and corn. Each fuel has its own special requirements for proper heating, and a furnace repair technician must have a thorough understanding of each fuel. The National Association of Plumbing-Heating-Cooling Contractors and the Air-Conditioning Contractors of America offers an apprenticeship programs through local chapters, according to the U.S. Bureau of Labor Statistics (www.bls.gov). Apprenticeship programs generally run 3-4 years and include classroom training. Furnace repair technicians must also be proficient in sheet metal and fiberglass work so they can repair faulty furnace runs and ductwork.