Table of Contents
Advertisement
Converting Class-A Metal
Chimney to Direct Vent System
Approved for US Installations Only.
The use of an existing chimney as an air intake
is not covered under the ANSI Z21.88a-10007,
CSA 2.33a-10007 test methods and the resulting
ITS/WHI product certification. The code Author-
ity Having Jurisdiction must be consulted prior
to proceeding with this installation method.
Prior to installation and connection of the vent
system to a Class A chimney, 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.
Important : If converting this appliance to a Class
A Metal Chimney, the IPI/CPI switch on the
hand held remote control/transmitter must
be turned to CPI (Continuous Pilot Ignition)
at all times. This will avoid nuisance pilot
outages during operation of this appliance.
See Remote manual for setup of this IPI/
CPI switch.
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" (102mm) flex pipe to that
length (the flex should already be extended to
its nominal length).
3) Connect the end of the flex pipe section to the
underside of the Top Adaptor using 3 sheet
metal screws (refer to Diagram 2).
Hampton® H35U Direct Vent Freestanding Gas Stove
Termination
Cap
Top Adaptor
Existing
Class
Existing
A Metal
Metal
Chimney
4" Aluminum
Chimney
System
Flex Pipe
System
Retro
Connector
Any Simpson
Dura-Vent
black direct vent
pipe plus an
adjustable length
to make a
proper connection.
Diagram 1
Diagram 2
installation
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 (refer to
Diagrams 3 and 4).
Diagram 4
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" (121mm)
diameter 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 (refer to Diagram
5).
Diagram 5
7) The connection between the appliance and
the Retro Connector may be completed with
sections of black direct vent pipe, together with
an adjustable length.
Diagram 3
31
Advertisement
Table of Contents
