Yes you can! Much like you can place picture frames and other items on your mantel piece without them melting. Although, there is a distance to combustible above the stove which must be adhered to. It can help if a beam is fitted between the fire and TV to help deflect the heat. If it is a wooden beam just make sure you have the correct distance to combustibles.
A smoke tested and commissioned Hetas passed stove will not affect your house insurance, we recommend contacting your insurance supplier none the less.
Wet wood and treated wood will damage the flue liner of your chimney. Stoves are typically multi-fuel or wood only, depending on the stove. Wood is the best considering it is carbon neutral but anthracites can also be used but please do check the manuel for the necessary fuels.
The most common reason for blackened glass is damp or wet wood. Anything over 20% moisture content is classed as wet and should not be used. Not only will you get blackened glass but you will also not benefit from the full heat output of your stove due to the moisture cooling the flue gasses. This will also damage your flue. Burning damp wood for a long period of time can tar up the flue, block the flue and in worst case cause a chimney fire.
The other reason for blackened glass is not using the appliance at its optimum temperature. We often see stoves that are under-fired or slumbered overnight – this should not be done. It will only damage the appliance and flue. If the stove is sized correctly for the room you should be able to use it at its optimum and the glass will not go black
There are many different sized cages and barriers that would be perfect for youngsters. Please advice your children on the dangers of touching a warm stove to refrain them from touching it. The choice is ultimately yours and assessing the risk of your setup and little ones.