R
DV400S DIRECT VENT ROOM HEATER
When using an existing Class A Metal Chimney the following requirements are necessary:
Minimum size diameter is 6 inches.
Minimum height from the base of the stove to the top of termination cap is 9 feet.
The vent from the top of the Heater to the Chimney must be rigid vent sections. A 4'' UL 1777 listed gas vent aluminum flexible liner can be used inside the chimney. The flexible liner must be secured to the last rigid section with three (3) sheet metal screws. A minimum 3 inch overlap is required. Remove and discard the existing chimney termination cap.
Determine the length of the 4'' UL 1777 listed gas vent flex liner required to meet the vent sections at the top of the Heater.
Follow the liner manufacturer’s instructions for installing the liner in the chimney. Attach a flex- ible liner puller to the liner and secure a rope to the puller. One person should feed the liner through the chimney, and another person should pull the liner from the bottom, with the rope, guid- ing the liner down the chimney. Extend and run the 4'' gas vent liner down the chimney leaving 10'' extending from the top of the chimney stack.
Install and secure the VTA (Vertical Termination Adapter) onto the chimney with the brackets pro- vided.
Place and secure the Termination Cap on the VTA with the screws provided. See Figure 13.
VERTICAL |
| |
TERMINATION | VERTICAL | |
CAP | ||
TERMINATION | ||
| ||
| ADAPTER | |
EXISTING |
| |
CLASS A |
| |
METAL |
| |
CHIMNEY |
| |
(6'' MIN. DIAMETER) |
| |
| UL1777 LISTED | |
| 4'' GAS VENT | |
| FLEX LINER |
DURAVENT GS
VENT SECTIONS
Figure 13
Chimney
March 4, 2002 | Page 18 | 30211C |
