INSTALLATION CONSIDERATIONS
20
Direct Vent
Terminal
50,000 Btuh
or less
9"
12"
12"
12"
Direct Vent Terminal
More than 50,000 Btuh
Forced Air Inlet
3'
GRA
DE
FIGURE 1
2. The vent termination must be located at least 12” above
ground or normally expected snow accumulation levels.
3. Do NOT terminate over public walkways. Avoid areas
where condensate may cause problems such as above
planters, patios, or adjacent to windows where steam may
cause fogging.
4. The vent termination shall be located at least 4’ horizon
-
tally from any electric meter, gas meter, regulator and any
relief equipment. These distances apply ONLY to U.S.
Installations.
5. The vent termination shall be located at least 3’ above any
forced air inlet located within 10’; and at least 10’ from a
combustion air intake of another appliance, except another
direct vent furnace intake.
6. In Canada, the Canadian Fuel Gas Code takes precedence
over the preceding termination instructions.
3" or 4" Diameter
SDR-26 Pipe
2 or 2 1/2" Diameter
SDR-26 Pipe
2" or 3" Diameter
Y Concentric Fitting
2" or 3" Diameter
Rain Cap
FIGURE 2
These kits are for vertical or horizontal termination of the
combustion air inlet and the exhaust vent pipes on Category
IV gas-fired condensing furnaces. The DCVK-30 kit can be
used for 3” diameter pipe systems. The DCVK-20 kit can be
used for the 2” diameter pipe system. For the correct pipe size
for the furnace. Both the combustion air inlet and the exhaust
vent pipes must attach to the termination kit. The termination
kit must terminate outside the structure and must be installed
per the instructions outlined below for vertical or horizontal
termination. Vertical termination is preferred. Field supplied
pipe and fittings are required to complete the installation.
1. Determine the best location for the termination kit. Roof
termination is preferred since it is less susceptible to
damage, has reduced intake contaminants and less visible
vent vapors. For side termination, consideration should
be given to:
a. Possible damage from the vapors to plants/shrubs,
other equipment and building materials
b. Possible damage to the terminal from foreign objects
c. Wind effects that may cause recirculation of flue prod
-
ucts, debris or light snow
d. Visible vent vapors.
Vent
Maintain 12" (18" for Canada)
minimum clearance above highest
anticipated snow level. Maximum of
24" above roof.
Combustion Air
Roof Boot/Flashing
(Field Supplied)
Support (Field Supplied)
45 Elbow
(Field Supplied)
Combustion Air
Vent
FIGURE 3
WARNING
D
O NOT OPERATE THE FURNACE WITH THE RAIN CAP REMOVED AS
RECIRUCLATION OF THE FLUE GASES MAY OCCUR.
W
ATER MAY ALSO
COLLECT INSIDE THE LARGER COMBUSTIN AIR PIPE AND FLOW TO THE
BURNER ENCLOSURE.
F
AILURE TO FOLLOW THIS WARNING CAN RESULT IN
PROPERTY DAMAGE, EQUIPMENT DAMAGE, PERSONAL INJURY OR DEATH.
Concentric Sidewall Vent Kit (0170K00000S)
This (sidewall only) vent kit is to be used with 2” - 3” vent
systems. The vent kit must terminate outside the structure and
may be installed with the intake and exhaust pipes located
side-by side or with one pipe above the other. This kit is NOT
intended for use with single pipe (non-direct vent) installations.