R
DV400S DIRECT VENT ROOM HEATER
Before installing the liner system, the chim- ney passageway should be cleaned and examined to verify it is unobstructed and in good structural condition.
Measure and record the chimney dimensions to determine total flexible liner requirements.
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. After feeding the liner down the chimney, form a 90˚ angle and bring the liner through the hole in the chimney wall. (If running two liners, run the 6” liner first and then the 4” inside of it.) Extend the liner through the wall of the chimney and attach it to the venting system extending from the top of the Heater.
Construct a metal flashing large enough and strong enough to cover the chimney opening and support the Heater Vertical Termination Cap.
The flashing needs to fold down over and around the outside of the masonry chimney so that it can be secured to the chimney by 4 screws. See Figure 12. The flashing will require a hole at least 6 1/2'' in diameter. (If using a 6” liner, extend the 6'' flexible liner through the flashing and attach it to the VTA (Vertical Termination Adapter) with screws provided.) Secure the VTA to the flashing with the screws provided and seal the VTA/Flashing joint with a silicone sealant to prevent moisture from running down the liner into the chimney.
Attach the 4'' gas vent liner to the Vertical Termination Cap with screws provided, then attach the Termination Cap to the VTA with screws provided. See Figure 12.
D. Existing Class A Metal Chimney Termination
In many cases where a
The existing chimney must comply with
6" LINER (OPTIONAL)
VTA | SILICONE SEALANT |
RIGID FLASHING (ATTACHED TO CHIMNEY WITH SCREWS WITH SILICONE SEALANT
UNDERNEATH)
Figure 12
Masonry Termination
The chimney should be cleaned and exam- ined to verify it is unobstructed and in good structural condition. Any structural weak- nesses such as cracks, leaky joints, corrod- ed or warped surfaces can have an adverse effect on the performance of this Heater and should be replaced or repaired.
Whenever an existing Class A Metal Chimney is on an outside wall, removal of the chimney and the use of the minimum horizontal direct vent termination kit may be less expensive.
March 4, 2002 | Page 17 | 30211C |
