I have unidare storage heaters quite old, but the basics are the same, they store heat in the early hours ( cheaper night rate) and blow the heat out during the day, mine have two switches input and output both 1 to 7 the higher the input the more electric you use, the lesser the number the less electric you use, the output blows out the heat ,the higher the number the more heat it blows out, if you are out during the day turn the output down to number one, this shuts the valve off so no heat comes out, then when you come in you can turn them up, I tend to put input between 3 and 4 and output on number one when I am at work and turn them up in the evening. Hope this helps.