Absolutely! Modern gas fireplaces must have the ability to shut off the flow of gas if there is no flame to burn it off. This is where the self generating millivolt system comes in. The millivolts energize a magnetic coil within the gas valve which holds the valve open. Should the pilot flame extinguish, the millivolts will stop generating, releasing the coil and closing the gas valve. Every Napoleon fireplace we sell at J&A Heating & Plumbing is tested prior to shipping to ensure a 100% effective system.
This is easily calculated provided that you have the local price of the fuel to be used. 1 cubic foot of natural gas will produce *1000BTU per hour, 1 litre of propane will produce *29,059 BTU per hour and 1 US Gallon will produce *110,000 BTU per hour. (*values may vary slightly, depending on location) The BTU of the fireplace is divided by the BTU value of the fuel to determine the amount of fuel consumed per hour. Example: A natural gas fireplace that has an input of 30,000 BTU per hour consumes 30,000 / 1000 = 30 cubic feet/hour. If the price of natural gas is .35 cents ($0.0035) per cubic foot then 30 cubic feet x .35 = 10.5 cents ($0.105). Therefore the cost of operating one of our 30,000 BTU Natural Gas Fireplaces such as the new GDS28 Gas Stove for one hour is 10.5 cents.
When it comes to putting a TV above the fireplace, we would suggest contacting the manufacturer of the TV to find out the clearances that should be met. Regarding some of our gas fireplaces, there is a section in the manual for TV clearances that we have tested to ensure the TV will not melt if installed as per the manual.
All of our fireplaces need to be installed by a licensed J&A technician, as it will void the warranty on your unit if it is not. We want to ensure the unit is installed to manufacturing specifications to ensure the safety of you and your family.