VERTICAL VENTING CONCENTRIC KIT –
RESIDENTIAL AND COMMERCIAL
A concentric vent/adapter/cap as specified in these
instructions may be used for vertical termination. Refer to
table 3.
HORIZONTAL VENTING CONCENTRIC KIT –
COMMERCIAL
1)
Horizontal commercial installations are for buildings
that are not attached to living spaces. The only
concentric vent/adapter/cap kit that may be used is the
kit supplied by Advanced Distributor Products. The kit
may be used with 45/60/75 units. The vent used to
connect from the concentric adapter to the unit may be
single wall material minimum 25 GSG (0.46 mm)
galvanized steel or equivalent grade stainless steel
installed according to the Horizontal Venting sections .
The air inlet may be single wall material or U.L. listed
single wall flex vent connector.
2)
The vent pipe diameter for horizontal commercial
installations shall be 3” (76 mm) on 45 units and 4”
(100 mm) on 60/75 units. Refer to Table 3.
3)
Refer to Table 2 for maximum vent lengths.
4)
Refer to Figure 5A for concentric kit termination,
Figure 3 for upward slope with condensate trap, Figure
4 for downward slope with trap, and Figure 5 for
downward slope with condensate drain through cap
where permitted by local authorities.
FIGURE 5A
LISTED THIMBLE
THROUGH
COMBUSTIBLE WALL
GROUND LEVEL
NOTE - MINIMUM HORIZONTAL LENGTH 3 FT. (91.4 CM) NOT
INCLUDING TERMINATION.
HORIZONTAL VENTING – CONCENTRIC VENT INSTALLATION
COMMON VENTING NOT ALLOWED WHEN HORIZONTALLY VENTING THE UNIT HEATER.
VENT TERMINATION
AND AIR INLET
TERMINATION
12” (30.5 CM) MINIMUM ABOVE
HIGHEST SNOWFALL
12
