Lennox Hearth Products SV4.5CTS Series User manual

1
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
HEARTH PRODUCTS
KITS AND ACCESSORIES
INSTALLATION INSTRUCTIONS FOR BLACK - SV4.5CTS-B (CAT. NO. H4716) & SV8CTS-B (CAT. NO. H6179)
AND TERRA COTTA - SV4.5CTS-TC (CAT. NO. H4717) & SV8CTS-TC (CAT. NO. H6180) TERMINATIONS
DIRECT VENT
CHASE TOP SQUARE
VERTICAL TERMINATIONS
750,207M
REV. A 07/2007
GENERAL INFORMATION
The SV4.5CTS and SV8CTS series terminations are designed to be
installed on top of locally fabricated chimney enclosure, referred to
hereinasachase. Theterminationsaredesignedtobeusedwithtested
andlistedDirectVent pipesystemsandmanufactured applianceslisted
for use with this product. The SV4.5CTS and SV8CTS terminations are
additionallydesignedandpaintedtobesuitableforusebyitselfwithout
surround, providing a beautiful top to a standard chase.
WARNINGS
This termination is intended to be installed in accordance with the
installation guidelines of the pipe system and appliance it is joined to.
Failure to install this product within those guidelines as well as these
installationinstructions can resultin damage of property,bodily injury,
or death. The installation must conform with local codes or, with the
national fuel gas code, or ANSI Z223.1.
It is highly recommended that this product be installed by a qualified
technician. ItishighlyrecommendedthatthetechnicianbeNFIcertified
for gas appliance installations.
APPROVALS AND LISTINGS
The SV4.5CTS and SV8CTS series terminations are tested as a integral
component of the Direct Vent pipe system and may be used with any
manufactured fireplace listed for use with these components. These
terminations are listed for this application by Omni-Test Laboratories.
FOR YOUR SAFETY
When working on ladders, roofs, scaffolding, or any high surface, take
precautionstoprotectagainstaccidents. Properlysecureladders,wear
safetyharnesses and verify all operationsare done to OSHA standards.
Also be aware of and avoid any and all electrical wires in or near your
working area.
Whenworkingwithandaroundsheetmetal,beawareofmaterialedges.
Always wear gloves, safety glass and any other needed protective gear
when working with sheet metal.
Take appropriate precautions when operating power equipment.
KIT CONTENTS
1 - Termination
1 - Bag with fifteen (15) stainless steel screws
1 - Instruction Sheet
SV4.5CTS
Or SV8CTS
Termination
Chase Flashing
(Field Fabricated)
Pipe
Section

2NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
# 8-32
Sheet Metal Screw
(Three Places)
1"
Adjustable
Slip Section
(Sweaged
Side At Top)
Outer Collar
Figure 1 Chase Flashing
Too short of a collar or no collar at all will allow water to seep into the
chasearoundthe outside of the pipe system, and too tall of a collarwill
interfere with the proper attachment of the termination.
Thecollaredopeningmustbelargeenoughtoallowforthedirectventpipe
systemtobeinstalledandtheterminationoutercollartomovefreely. The
collared opening can be no larger than nine (9) inched in diameter.
• Strap Support - The SV4.5SU strap support is to be used for keeping
the vent pipe system in the center of the chase ( refer to Figure 3 ).
•Silicone Caulk - This is to be used for the final sealing of the
installation. The collar must be properly sealed to the chase flashing
withappropriatecaulk. Hi-Temp sealantP/N10K81 isrecommended.
Failure to properly seal the collared opening will result in leakage into
the chase.
INSTALLATION STEPS
Step 1. Install the gas appliance in accordance with its installation
instructions.
Step2. Determinethechimneyheight ventconfigurationandnumberof
strait direct vent pipe sections required to bring the top of the last pipe
section flush with the chase top. Two inches (2") maximum above to
three inches (3") maximum below are the acceptable limits. Please see
the Installation Instructions accessories list for pipe information. Install
the direct vent pipe system.
Ifthetopofthelastpipesectionexceedsthe3"maximumfromthechase
top (up to 5" maximum), please use an adjustable length slip section
SV4.5LA (Cat. No. 77L75) or SV8LA (Cat. No. H2255) to engage the
termination with the pipe. See Step 3 for details.
Step3. Installthesweagedsideoftheadjustablepipesectionalltheway
inside the termination. Secure it with three sheet metal screws (not
provided) one inch (1") above the termination outer collar bottom, in
three equally spaced places around the termination (
see Figure 2 ).
CHASE CONSTRUCTION
The chase is a hollow vertical enclosure framed as a part of the building
andcoveredwithasuitableexteriorveneer.Alwaysconsultlocalbuilding
codes for approved chase construction techniques.
The chase flashing, fabricated locally, is used to anchor the termination
to the chase. The flashing should be constructed to overlap the chase to
seal out the elements.
CHASE DIMENSIONS
Thechasemustbelargeenoughtoaccommodatetheventsystemandits
required clearances to combustibles. The base of the Direct Vent Chase
Top Vertical Termination is nineteen and five eights inches (19 5/8" ) for
theSV4.5CTS and twenty three inches(23")for the SV8CTS. The chase
anditschase flashing must exceed those dimensions byone (1) inch on
all sides. This means the minimum chase dimensions must be a
minimumoftwentyoneandfiveeightsinches(215/8")fortheSV4.5CTS
and twenty five (25") for the SV8CTS.
TO INSTALL THE TERMINATION
Theinstallationofthisterminationalsorequiresadditionalcomponents.
•Chase Flashing - The flashing should be a minimum 0.018" thick G90
galvanized steel or equivalent per ASTM 525. The chase flashing must
have, integrated into it, a vertical collar (
see Figure 1 ).
*9"
(229 mm) I.D. 3/4" (38 mm) Min. to
2" (51 mm) Max.
2"
(51 mm)
**21-5/8" Min.
(550 mm)
**21-5/8" Min.
(550 mm)
*For SV8CTS - 12” (305 mm) I.D.
**For SV8CTS - 25” (635 mm)
Step4. InstalltheSV4.5pipestrapsupport(Cat.No.96K93)orSV8SU
pipe strap support (Cat. No. H2262) to keep the vent system from
moving( seeFigure3 ). Thestrapsupportshouldbeplacedaminimum
of one foot (1') to a maximum of 2 feet (2') below the chase top.
Step 5. Install the chase flashing on the top of the chase. Secure the
flashing to the top of the chase, using 8d nails.
Step 6. Connect the termination with the top pipe section. Slide the
termination inside pipe and lower it onto the chase flashing.
Step 7. Rotate the termination as needed to square it to the chase
flashing for proper aesthetic appearance.
Figure 2

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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 3
MAINTENANCE
As part of an annual inspection, the termination should be checked for
anyforeigndebris, animalorinsect nests,ormaterial ofanykindwhich
mayhavebecomelodgedinit. Theexterioroftheterminationshouldbe
visually inspected for damage of any kind.
In the event of damage to the termination, it should be replaced with a
new termination. All screw attachments should be checked to insure
they have not loosened over time and they should also be checked for
the water tightness of their silicon seal. The termination must be
removed to clean the chimney. Following cleaning, reinstall the termi-
nation and inspect as detailed in this document.
Figure 4
VERTICAL VENT TERMINATION CLEARANCES
These instructions should be used as a guideline and do not super-
sedelocalcodesinanyway. InstallSV4.5ventaccordingtothecurrent
NationalFuelGasCode,ANSI-Z223.1-latestedition,intheUSAorCAN/
CGA-B149.1 and B149.2 - latest editions in Canada.
Terminatesingleventcapsrelativetobuildingcomponentsaccording to
Figure 4 .
2"
(Max.)
Chase
Flashing
3"
(Max.)
Pipe
Section
Chase
2 feet
(Max.)
1 foot
(Min.)
Strap
Support
2"
(Min.)
12 X
Roof Pitch is X/12
2 FT
MIN.
2 FT MIN.
Lowest
Discharge
Opening
H*
Horizontal Overhang
Vertical
Wall
Vent
Termination
*H = MINIMUM HEIGHT FROM ROOF TO
LOWEST DISCHARGE OPENING OF VENT
The vent/air intake termination clearances above the high side of
an angled roof is as shown in the following chart:
Termination Heights For Vents Above Flat Or
Slopped Roofs Ref. NFPA 54 / ANSI Z223.1, 7.6
hctiPfooR H)teef( H)sretem(
21/6ottalF0.13.0
21/7ot21/6revO52.183.0
21/8ot21/7revO5.164.0
21/9ot21/8revO0.216.0
21/01ot21/9revO5.267.0
21/11ot21/01revO52.399.0
21/21ot21/11revO0.422.1
21/41ot21/21revO0.525.1
21/61ot21/41revO0.638.1
21/81ot21/61revO0.731.2
21/02ot21/81revO5.792.2
21/12ot21/02revO0.844.2
Step 8. Once the termination is positioned, secure it to the chase
flashing using the stainless steel screws provided, through the pre-
punched attachment holes in the attachment tabs of the termination.
Be careful not to over tighten the screws so as to strip out the chase
flashing. In the event of a strip, a larger screw can be used so long
as it is stainless steel. DO NOT use common sheet metal screws, as
they will corrode over time and the termination will no longer be
secure at that point.
Step 9. Once the termination is permanently attached, seal all of the
screw tops with silicone. In order to properly apply the silicone, the
surfaceoftheterminationandscrewsmustbecleananddry. Notsealing
the screws tops will result in water leakage into the chase.

4NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Printed in U.S.A. © 2006 by Lennox Hearth Products
P/N 750,207M REV. A 07/2007
The manufacturer reserves the right to make changes at any time, without notice, in design,
materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.
1110 West Taft Avenue • Orange, CA 92865