Installation & Operation Manual
2 Venting (continued)
Masonry chimney installation
Do not use a standard masonry chimney to directly vent the combustion products from this unit.
To use a masonry chimney, the chimney must use a sealed,
WARNING
Do not vent this unit into a masonry chimney without a sealed stainless steel liner system. Any breaks, leaks, or damage to the masonry flue/tile will allow the
NOTICE
Check with local code officials to determine code requirements or the advisability of using a masonry chimney with a sealed
Horizontal DV venting termination
Horizontal venting uses the unit’s internal combustion air blower to force the flue products out of the
You must purchase a horizontal direct vent kit from the appliance manufacturer to ensure proper operation. When installing the vent cap, the wall opening must provide an air space clearance of 2 inches (5.1 cm) around the flue pipe. The diameter of the opening for installation of the sidewall cap will be 4 inches (10.2 cm) larger (minimum) than the nominal diameter of the installed vent pipe to the horizontal vent cap.
Install the horizontal vent cap from the outside. Mount the vent cap to the wall using four screws or wall anchors. Seal under the screw heads with caulking. Install the Category IV vent pipe from the unit to the vent cap. See detailed instructions packed with the horizontal direct vent kit.
Horizontal Vent Termination Clearances and Location
Follow all sidewall venting termination information for clearances and location under Sidewall Vent Termination Clearances and Location, page 22.
TABLE - 2E
DIRECT VENT KITS
MODEL | HORIZONTAL | VERTICAL | MODEL | HORIZONTAL | VERTICAL | |
KIT* | KIT* | KIT* | KIT* | |||
|
| |||||
502 | DVK3004 | VDK3026 | 1262 | DVK3001 | VDK3024 | |
652 | DVK3005 | VDK3027 | 1442 | DVK3001 | VDK3024 | |
752 | DVK3005 | VDK3027 | 1802 | DVK30000 | VDK3024 | |
992 | DVK3000 | VDK3023 | 2072 | DVK30000 | VDK3024 |
*These kits include a DV box adapter, air inlet cap, and a sidewall vent termination. The VDK kits include a DV box adapter and an air inlet cap.
Combustion air inlet piping
The Direct Vent system requires the installation of a pipe to supply combustion air from the outdoors directly to the unit. Make sure the combustion air inlet is in the same pressure zone as the vent terminal.
In cold climates, use a
CAUTION
Units that are shut down or will not operate may experience freezing due to convective airflow in the air inlet pipe.
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