17
Bringing in Outside (or “Make-up”) Air
An outside air supply and a combustion air opening serve two
different
purposes. Outside air
ensures a fresh supply of air to the
room
; a combustion air opening ensures a fresh supply of air to
the
flame
.
Many building code jurisdictions require that outside or “make-up” air be provided when installing
a fireplace of this type. This requirement can be satisfied by the proper installation of an ‘outside
air kit’ which is not provided. The final determination of the suitability of any particular kit must be
made by the installer.
If an outside air supply is desired it should be
added to the room
in which the Vision Gas Fireplace is
installed,
not to the chase
enclosing the Vision Gas Fireplace.
If outside air is introduced into the chase, competing air pressures could compromise the operation of
the Vision Gas Fireplace.
Whether or not you add an outside air supply to your room,
IN ALL CASES, YOU MUST ADD THE
PROPER COMBUSTION AIR SUPPLY TO THE VISION GAS FIREPLACE!
NOTE!
Figure 6
30”
5½”
14”
3½”
