Remington REM-L180ANT-F User Manual

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Preparing for Installation (cont.)

DETERMINING FRESH-AIR FLOW FOR THE HEATER LOCATION

Determining if You Have a Conned or Unconned Space:

Use the below information to determine if you have a conned or unconned space. Your space includes the

room in which you will install the heater plus any other rooms that are directly connected and have doorless

passageways or ventilation grills between the rooms.

1. Determine the volume of the space. Length × Width × Height = cu. ft. (volume of space)

• Example: 20 ft. (length) × 16 ft. (width) × 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room(s) is supplied with grills or openings, add the volume of these

rooms to the total volume of your space.

2. Divide the space’s volume by 50 cu. ft. to determine the maximum BTU/hr the space can support.

_______ (volume of space) ÷ 50 cu. ft. = (maximum BTU/hr the space can support)

• Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum BTU/hr the space can support)

3. Add the BTU/hr of all fuel burning appliances in the space:

Vent-free heater _________ BTU/hr

Gas water heater* ________BTU/hr

Gas furnace _____________BTU/hr

Vented gas heater ________BTU/hr Example:

Gas heater logs __________BTU/hr Gas water heater 30,000 BTU/hr

Other gas appliances*+ ____BTU/hr Vent-free heater + 26,000 BTU/hr

Total = ____BTU/hr Total = 56,000 BTU/hr

*Do not include direct-vent gas appliances. Direct-vent appliances draw combustion air from outdoors

and vent to the outdoors.

4. Compare the maximum BTU/hr the space can support with the actual amount of BTU/hr used:

_______ BTU/hr (maximum the space can support)

_______ BTU/hr (actual amount of BTU/hr used).

• Example : 51,200 BTU/hr (maximum the space can support) 56,000 BTU/hr (actual amount of BTU/hr used)

The space in the above example is a conned space because the actual BTU/hr used is more than the

maximum BTU/hr the space can support. You must provide additional fresh air. Your options are as follows:

A. Add the space of an adjoining room and rework the above information. If the extra space creates an

unconned space, remove the door to the adjoining room or add ventilation grills between rooms. See

VENTILATION AIR FROM INSIDE A BUILDING, page 9.

B. Vent the room directly to the outdoors. See VENTILATION AIR FROM OUTDOORS, page 9.

C. Install a heater that uses less BTUs/hr if the lower BTUs/hr creates an unconned space. If the actual BTU/

hr used is less than the maximum BTU/hr the space can support, the space is an unconned space. In this

case, no additional fresh air ventilation is needed.

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Remington REM-L180ANT-F 18-in 30000-BTU Dual-Burner Vent-Free Gas Fireplace Logs with Thermostat