I have a Glow-worm room-sealed boiler ("Ultimate 60FF") which is using up valuable space in my small kitchen, which I am therefore hoping to move. A plumber friend of ours suggested it could be moved onto the outside wall of the house, enclosed in a waterproof wooden box, with a frost protection thermostat to prevent the unit getting too cold. This sounds like a good idea, though I have a couple of reservations, which I was hoping someone might be able to help with!
1. The boiler manual states that if the boiler is enclosed in a compartment, high and low level ventilation must be provided. If I do this, I'm guessing it will make the air temperature inside the box very cold in winter. During night-times (when the boiler would generally be timed off), would there be a danger of the frost protection thermostat turning on very frequently, and increasing my gas bills enormously?
2. If I ignore the Glow-worm recommendation of ventilating the box, and instead completely enclose the boiler, and add extra insulation (in order to keep the box as warm as possible in winter), would there then be a danger of the boiler getting too HOT in summer?
Any help anyone can provide would be greatly appreciated!