32
Hampton® H15U-NG/LP Direct Vent Freestanding Gas Stove
installation
Prior to installation and connection of the vent
system to a Class Achimney, the chimney must
be inspected and thoroughly cleaned by a quali-
fied service person, such as a certified chimney
sweep or home inspection service.
The direct vent system must not be connected
to a damaged Class A chimney.
For Class A chimneys cleanout doors and caps
or plugs for cleanout tee fittings and ash dumps
shall be secured in place and sealed before in-
stalling a Direct Vent system within the chimney.
If the appliance shuts off during operation,
contact a qualified service person to determine
if a negative pressure and/or leaky chimney
condition exists. Do not operate the appliance
until the problem is corrected.
1) Remove the existing chimney cap.
2) Measure the distance from the top end of the
chimney to the bottom of the ceiling support box,
add 3" (76mm) to this measurement, and cut
a section of the 4" flex pipe to that length (the
flex should already be extended to its nominal
length).
5) Pull the flex pipe down through the ceiling
support box, until it protrudes approximately
3" (76mm). Connect the flex pipe to the Retro
Connector by slipping it into the 4-3/4" dia-meter
sleeve on the top side of the Connector. Use
3 sheet metal screws to assemble these two
parts.
6) Push the flex pipe back up into the ceiling sup-
port box, center the Retro Connector, and attach
it to the support box, or decorative sleeve for
double wall solid packed pipe, with the sheet
metal screws (supplied). The holes in the Retro
Connector are pre-punched. Diagram 5.
Diagram 1
Diagram 2
Diagram 3
Diagram 4
Diagram 5
7) The connection between the appliance and the
Retro Connector may be completed with sec-
tions of black direct vent pipe, together with an
adjustable length.
3) Connect the end of the flex pipe section to the
underside of the Top Adaptor using 3 sheet
metal screws. Diagram 2.
4) Pass the flex pipe down through the center of
the chimney system, and center the adaptor
on the top of the chimney pipe. Drill four 1/8"
diameter holes through the adaptor and into the
chimney top. Insure that you are in fact, drilling
into the metal on the chimney. Twist-lock the
Termination Cap onto the Adaptor. (Diagrams
3 and 4).
Approved for US Installations Only.
The use of an existing chimney as an air
intake is not covered under the ANS Z21.88/
CSA 2.33 test methods and the resulting ITS/
WHI product certification. The code Authority
Having Jurisdiction must be consulted prior
to proceeding with this installation method.
Converting Class-A Metal Chimney to Direct Vent System
Existing
Class
A Metal
Chimney
System
