DCVK Concentric Vent Install Instructions

2
IMPORTANT INFORMATION
VENT TERMINATION CLEARANCES
1. Determine termination locations based on clearances
specified in furnace installation instructions, and following
steps as shown in Figures 1, 3, 6, 7, 8 and 9.
Direct Vent
Terminal
50,000 Btuh
or less
9"
12"
12"
12"
Direct Vent Terminal
More than 50,000 Btuh
Forced Air Inlet
3'
G
R
A
D
E
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’ horizontally
from any electric meter, gas meter, regulator and any relief
equipment. These distances apply ONLY to U.S. Installations.
5. The vent termination is to be located at least 3’ above any
forced air inlet located within 10’.
6. In Canada, the Canadian Fuel Gas Code takes prece-
dence over the preceding termination instructions.
CONCENTRIC VENT TERMINATION KIT
DCVK-20 & DCVK-30
3" Rain Cap or 2" Rain Cap
3" Diameter SDR-26 Pipe, 19 5/8" Long or
4" Diameter SDR-26 Pipe, 24 1/8" Long
2" Diameter SDR-26 Pipe, 31 1/2" Long or
2 1/2" Diameter SDR-26 Pipe, 37" Long
3" Y Concentric Fitting or 2" Y Concentric Fitting
Kit Components:
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. Refer to Table 1 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.
Installation of ¼” or larger mesh screen is strongly recom-
mended to prevent animals from building nests in the pipe, but
it is not required and will not affect the performance of the unit.
Field supplied pipe and fittings are required to complete
installation.
VERTICAL & HORIZONTAL TERMINATION
1. Refer to the furnace installation instructions to determine
the vent pipe diameter and maximum allowable vent length.
Do not include the field supplied 45° elbow in the total elbow
count. If more than four elbows are required, reduce the
length of both the inlet and the exhaust pipes five feet for
each additional elbow used. Elbows are DWV long radius
FIGURE 1