Heat-N-Glo CFX-DA Installer's Manual page 11

OUTSIDE AIR
WARNING: THIS UNIT IS DESIGNED TO OPER-
!
ATE USING OUTSIDE COMBUSTION AIR. IT IS
MANDATORY TO INSTALL AN AK-CFX AIR KIT. THE
4-INCH (102MM) DUCT COLLAR FOR THE AIR KIT IS
PROVIDED ON THE FIREPLACE (SEE FIGURE 6).
CAUTION: Install fresh air intake in the same pres-
sure zone as the exhaust pipe termination cap. Failure
to do so may cause over-heating after the unit is shut
down, potentially resulting in damaged components.
The combustion air for this fireplace is supplied by AK-CFX
outside air kit. This kit may extend up to 40 feet from the
fireplace to the inlet cap (provided with AK-CFX).
It is RECOMMENDED that the inlet cap be installed on the
same exterior wall as the DVK-01TRD exhaust termination
cap to ensure they are in the same pressure zone. Required
Unit could have up to eight elbows off the top, with a
maximum of 50 feet horizontal before any vertical, however,
a vertical run of 40 feet maximum could be introduced at
any point of the horizontal run and even right off the top of
the unit.
Total H (Horizontal run) = 50 feet maximum.
Total V (Vertical run) = 40 feet maximum.
Figure 7.
COMBUSTION
AIR DUCT
40 Ft
MAXIMUM
13
COMBUSTION DUCT COLLAR
for AK-CFX Air Kit
Figure 6. Unit with duct collar
distance between intake and exhaust termination caps is 3
feet (USA) and 6 feet (Canada).
Outside air kit AK-CFX must terminate horizontally and must
be used with the provided inlet cap.
Any combination in between
would be applicable.
COMBUSTION
AIR DUCT
40 Ft
MAXIMUM
Install combustion air duct
with inlet cap on same
exterior wall of the dwelling
whenever possible.