Before You Begin
Vent-free gas space heaters are available in several cabinet sizes, ranging from compact units sufficient for a small bath to fireplace-like models for large rooms. Most units can be wall-mounted or stand alone on optional bases. Depending on the size you choose, heat output can range from around 3,000 to 30,000 Btus per hour. Colors are limited to ivory or brown, but some have a faux wood-grain finish.
Because of the danger inherent in working with natural or bottled gas, and installing gas appliances, most municipalities require that the work is done by a licensed professional. You can do much of the basic installation yourself - measuring pipe runs, "dry" installing the pipe and fittings, and placing the unit in position - then call in a pro to complete the connections and have it inspected. If you do this, first check with your pro to be sure you use the correct size pipe, and follow the proper installation procedures for your heater.
Read all of the manufacturer's instructions carefully. Gas appliance installations must be done properly to avoid potential explosion and fire hazards. Like gas water heaters, vent-free space heaters are positioned at a minimum height above the floor (typically 3 inches). Some heaters are not convertible for use with gases other than those specified by the manufacturer. Because the units are unvented, sufficient make-up air must be provided in the room in which the heater is installed. If your home is tightly constructed or weather-sealed, it may be necessary to add fresh-air vents through the wall or door to other rooms to ensure adequate air circulation.
Step 1 : Assemble the unit
Assemble the unit and any accessories, such as a thermostat sensor or separate blower attachment. If you are mounting a vent-free heater on a wall, run electrical wiring to the location from a nearby outlet, or from your home's service panel.
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