ICC Chimney EXCELDirect User manual

EXCELDirect®
DIRECT VENT VENTING SYSTEM
INSTALLATION AND MAINTENANCE INSTRUCTIONS
EXCELDirect®is a certified venting system designed to be used only with certified
direct vent gas fired appliances.
The direct vent gas appliance must be certified for use with the ICC EXCELDirect®
venting system. Refer to the manufacturer's labeling and instruction manual to confirm
that EXCELDirect®is listed for use with the appliance model you have selected.
ARNING
WARNING
•The installation must conform with local codes or, in the absence of local codes,
with the following code in force:
- National Fuel Gas Code, ANSI Z223.1 (USA) or,
- Natural Gas and Propane Installation Code, CAN/CSA B149.1 (Canada).
•A major cause of vent related fires is failure to maintain required clearances (air
space) to combustible materials. The venting configurations and clearances
requirements are indicated in the Direct Vent gas appliance instructions manual.
It is of utmost importance that this venting system be installed only in
accordance with these instructions. Do not fill the air space with insulating
material.
•A direct vent appliance must be connected to a single venting system. Multiple
venting is not allowed.
•Specific requirements for horizontal installation, such as minimum clearances to
balcony, window, door, soffit, etc. are detailed in this manual.
•Contact local building or fireofficials about restrictions and installation inspection
in your area.
S
Do not begin installing the ICC EXCELDirect®venting system until you have carefully
read the appliance and vent system installation instructions.
Use only ICC model EXCELDirect®components. Failure to do so will void the
certification and warranty of the product.
Keep these installation and operating instructions in a safe location for future
reference.
EXCELDirect®has been tested and listed to the following:
. UL 2112 Standard by Underwriters Laboratories inc. (Listing #MH300439)
. Conforms to ANSI Z21 Std for Direct vent gas appliances and UL Std 2112
by INTERTEK. (ETL Listing # 4005717)
. Certified to CSA Std for Direct vent gas appliances by INTERTEK.
(ETL Listing # 4005717)
ICC INDUSTRIAL CHIMNEY COMPANY INC.
400 J.F. Kennedy, St. Jerome
Quebec, Canada, J7Y 4B7
Tel.: [phone], Fax: [phone]
www.icc-rsf.com
XLT-II_2019-05

EXCELDirect®2 Owner's Manual
TABLE OF CONTENTS
EXCELDirect®TECHNICAL SPECIFICATIONS................................................................2
Operation and Maintenance.........................................................................................3
General Installation Notes............................................................................................3
Planning your installation .............................................................................................4
Assembling Notes........................................................................................................5
Installation Instructions......................................................................................................6
Horizontal Installation...................................................................................................6
Horizontal Installation using a horizontal termination cap........................................6
Horizontal Installation - Snorkel Termination...........................................................8
Vertical Installation.......................................................................................................9
Vertical installation –Straight..................................................................................9
Elbows and Offsets...............................................................................................12
Firestops...............................................................................................................12
Supports................................................................................................................13
Attic.......................................................................................................................15
Masonry Chimney Installation - Co-linear to Co-axial venting ...............................16
Horizontal and vertical termination location...........................................................20
LIMITED LIFETIME WARRANTY....................................................................................21
EXCELDirect®TECHNICAL SPECIFICATIONS
Materials
Exterior Casing:
.019" Galvalume Steel or .022" Satin Coated (painted black)
Interior Flue:
.016" Type 430 Stainless Steel
Gasket:
Fiberglass on the inner pipe
Inner pipe diameter
4"
5"
Outside Diameter
6 5/8"
8"
Weight/Foot (lb/ft.)
1.75
2.10
Rough Opening Required
Supports (CS)
8 3/4" x 8 3/4"
10" x 10"
Supports (SS, RDS)
10" x 10"
11" x 11"
Insulated Wall Thimble (WT)
8 3/4" x 8 3/4"
10" x 10"
Maximum Support capacity
Ceiling Support (CS)
15’
12’
Round Support (RDS) / Square Support (SS)
50’
40’
Offset support (OS) - Installed Horizontally or Inclined
4’
4’
Offset support (OS) - Installed Vertically
38’
30’
Roof support (SR) - Installed on Framing
50’
40’
Roof support (SR) - Installed on 3/4" plywood
23’
18’
Adjustable Wall Support (WS)
13’
10’
Clearances
Clearance to combustibles
*
*
* As determined by the gas appliance specifications in its instruction manual.

EXCELDirect®3 Owner's Manual
Operation and Maintenance
Initially inspect the vent system weekly. From this you will learn if your gas
appliance needs fine tuning. KEEP YOUR VENT CLEAN. When using a Direct
Vent gas appliance, we recommend that your vent system is examined
annually by a qualified service company for the following:
1. Verify the connection between the vent adapter and the appliance first
joint.
2. Ensure that every joint of the venting system is properly fastened and
screwed with 3 screws (outer casing).
3. Remove the termination cap to ensure that no obstruction could block the
air intake and flue exhaust.
4. Verify if there is sign of corrosion.
5. Verify that the supports, flashing and storm collar are properly in place.
General Installation Notes
1. EXCELDirect®is a complete system, extending from the appliance to the
outdoors.
2. Each appliance must have its own separate EXCELDirect®system.
3. Choose a gas appliance that has the label of a recognized Testing
Laboratory (such as WH, UL, ULC, CSA and OMNI).
4. Install the gas appliance as described in the Installation Instructions
accompanying the gas appliance. BE CERTAIN TO MAINTAIN THE
REQUIRED CLEARANCES TO COMBUSTIBLE CONSTRUCTION.
5. The maximum height of un-guyed vent above the roof is 5 feet. If you
have more than 5 feet use the EXCEL Chimney Roof Brace (XM-ERB).
6. Portions of the vent which extend through accessible spaces shall be
enclosed in all cases to avoid personal contact with the vent and damage
to the vent.
7. DO NOT FILL THE AIR SPACE around the vent with insulation or any
other material. Do not fill the factory built supports with insulation.
Insulation placed in this area could cause adjacent combustibles to
overheat.
8. Do not allow sawdust or construction debris to accumulate around the
vent. Clean all areas surrounding the vent before closing up any enclosed
areas.
9. In attics, clean the joist area around the vent before installing any type of
supports.
10. Horizontal venting terminations shall not be recessed into a wall or siding.

EXCELDirect®4 Owner's Manual
Planning your installation
General
Prior to starting your installation, we suggest you take the following into
consideration:
1. There are two possible ways to connect a direct vent venting system to a gas
appliance:
- Horizontal installation (through the wall);
- Vertical installation (through the roof).
Check the appliance manufacturer's installation instructions to see all possible
vent configurations.
2. Review all your options for the appliance location and also venting configuration.
Try to minimize the alteration and reframing of structural components of the
building (wall studs, water pipes, electrical wiring, ceiling joists, roof rafters, etc.).
It may be easier to change the location of your appliance than to modify the
building structure.
3. Carefully read the appliance and the venting system instruction manuals. Good
planning might save you time, work and money.
4. Use only authorized EXCELDirect®listed components unless compatibility with
another brand is specified in the appliance manufacturer’s instructions. Do not use
damaged parts.
5. For a horizontal installation, you will have to take into consideration the distance
between the gas appliance adapter to the wall, as well as the wall thickness and
a vertical rise (if applicable). The horizontal vent termination on the exterior must
be located in accordance with the Installation Codes and Regulations. See
"horizontal and vertical terminal location" section on page 20.
6. For a vertical installation, you must consider the distance between the gas
appliance outlet and the ceiling, the ceiling thickness, the height of the attic or
second floor and allow sufficient vent height above roof line. See Table 1 and
Figure 11.
7. For two-story applications, firestops are required at each floor. If an offset is
needed in the attic, additional lengths and elbows will be required.
8. Contact your local building authority and/or fire officials for permits, restrictions
and installation inspections. You may also wish to contact your house insurance
representative.
Tool checklist
Tools and equipment you may need for your installation.
- Eye protection
- Gloves
- Tape Measure
- Extension cord
- Marking pencil
- Nails
- Stud sensor
- Square
- Circular saw
- Hand saw
- Drill
- Drill bits
- Keyhole saw
- Ladder
- Level
- Pliers
- Caulking gun
- Hi temp. Silicone sealant
- Hammer
- Screwdrivers
- Screws
- Plumb Bob
- Cold chisel

EXCELDirect®5 Owner's Manual
Rules of Safety
1. Wear gloves when handling metal parts with sharp edges.
2. Wear safety glasses.
3. Electrical tools must be grounded.
4. If a ladder is required, it must be in good condition, installed on a firm
surface, and leveled.
5. When cutting a wall, floor or ceiling, be careful not to damage wiring, gas
or water pipes. If these elements need to be relocated, work should be
done by a qualified person.
Assembling Notes
Use of sealant
EXCELDirect®does not require sealant on the flue. The inner liner has a
factory installed high temperature gasket on each length that will make a
sealed connection. It is not required to apply sealant on any inner liner joints,
even if sealant is specified by the appliance manufacturer. The outer casing
has a tapered friction seal which seals tightly, but requires sealant if the
appliance manufacturer requires sealant on the exterior casing.
Joint connection
Figure 1 - Joint connection
The outer casing of EXCELDirect®is
tapered to make connection easy. Simply
slide one length onto another and press
firmly. The inner liner joint will be
automatically sealed. Once the lengths are
firmly joined, fasten the joint with the three
#6 x 3/8" screws provided. All lengths are
assembled this way.
Figure 2 –Two Piece Adjustable
Length (DLA30)
Slip length (DLS1, DLS1B, DLS2, DLS2B)
EXCELDirect®slip lengths add 2’’- 9’’ or
2’’- 21’’ to a straight length.
Two-Piece adjustable length (DLA30,
DLA30B)
EXCELDirect®two piece adjustable lengths
are adjustable from 18” to 30”. Two
sections are included which telescope
together and can be installed anywhere in
a system.

EXCELDirect®6 Owner's Manual
Installation Instructions
Horizontal Installation
Horizontal Installation using a horizontal termination cap
Figure 3 - Typical Horizontal Installations
1. Determine a location for the appliance, venting, and termination that
agrees with both the codes and appliance manufacturer’s requirements.
See "Planning your installation" on page 4.
2. Venting configurations are specific to each gas appliance. Manufacturer’s
installation instructions will provide restrictions regarding maximum and
minimum vent runs, number of elbows, as well as the relationships
between lengths of vent run to vent rise.
3. EXCELDirect®fits most standard appliance outlet collars without an
adapter, but appliance adapters are required for certain brands and
applications. Insert the first length or adapter on the appliance outlet and
fasten it to the appliance using the three #6 x 3/8" sheet metal screws
provided. See appliance manufacturer’s requirements if sealant is
required for the first length.
4. Install and fasten the remaining vent components to achieve the desired
layout.
5. Slide a Trim Plate (TP), or larger Trim Ring (TR) over the last vent section
before penetrating the wall if the vent will remain exposed. The o’ring
provided is intended to be installed between the trim and the wall thimble.

EXCELDirect®7 Owner's Manual
6. Move the gas appliance into its final position and mark the dimensions of
the rough opening on the wall where the vent will pass: 8 3/4" x 8 3/4" for
a 4" diameter vent or 10" x 10" for a 5" diameter vent. See the appliance
manufacturer's installation instructions for exact clearance requirements
to the insulated wall thimble. Cut and frame a hole in the interior and
exterior wall making sure that the center of the hole is aligned with the
center of the horizontal vent. The horizontal vent run must be level or have
1/4" rise per linear foot of run towards the termination. Never allow the
vent to run downward.
Note: The EXCELDirect Insulated Wall Thimble (WT) is certified by OMNI test
laboratory for zero clearance in all applications through a wall. This includes
installations on Direct Vent appliances that specify more than standard
clearance (e.g. 3”) or have special adapters that would otherwise be required.
7. Install the interior and exterior portions of the Insulated Wall Thimble (WT)
and screw (or nail) them to the framed opening. The wall thimble is
insulated and will provide 1" clearance to combustible material as the vent
passes through the wall. The insulated portion goes inside the house (see
Figure 4).
8. Seal the perimeter of the exterior wall thimble using high temperature
silicone sealant to prevent water infiltration.
Note: The wall thimble will fit wall thickness from 5 3/4" to 10 1/2". For wall
thickness less than 5 3/4", cut both sleeves as required. Once installed, an
overlap of 1" minimum is necessary. For wall thickness greater than 10 1/2”,
the Wall Thimble Extension (WTE) can be used, and will accommodate walls
up to 20 3/4” thick.
9. The vent portion of the Horizontal Termination is a slip length which
provides up to 6” of adjustment. If the wall is less than 6” thick you may
Figure 4 -
Insulated Wall Thimble Installation
Figure 5 - Vinyl standoff

EXCELDirect®8 Owner's Manual
HT
RHTS
RHT
HTS
have to paint the slip portion of the termination as it will be visible in the
home.
10. From outside, fasten the Horizontal Termination (HT, DHT or RHT) using
four #8 x 2" wood screws. The horizontal termination can accommodate
siding up to 1 ½” deep. An optional Vinyl Siding Standoff (VSS) is available
for deeper siding (Figure 5). Seal the perimeter of the Horizontal
Termination using silicone sealant to prevent water infiltration.
11. Optional Horizontal Wind/Heat Shield (HTS, RHTS) are available that can
improve cap performance in high winds and provide heat protection which
may be required with some appliances.
Figure 6 - Optional Horizontal Wind/Heat Shields
12. From inside, move the gas appliance into its final position making sure the
vent pipe will fully engage with the termination. If the connection between
the vent and termination is in the wall and not accessible, fastening the
together is not required.
13. Fasten the Trim Plate (TP), or larger Trim Ring (TR) to the wall and to the
vent.
Horizontal Installation - Snorkel Termination
When the horizontal termination is too close to the ground or a vertical rise is
required, 14" and a 36" tall snorkel terminations are available. See Figure 6.
Follow the same instructions as described in the “horizontal termination”
section.

EXCELDirect®9 Owner's Manual
If the base of the snorkel is below grade (i.e. basement installation), proper
drainage is required to prevent water from entering in the snorkel. The portion
of the snorkel that is below grade must be coated with tar to prevent corrosion.
See Figure 7.
Vertical Installation
Vertical installation –Straight
Figure 8 –Typical vertical installations
Figure 6 - Snorkel
Figure 7 - Snorkel below grade

EXCELDirect®10 Owner's Manual
1. Determine a location for the appliance, venting and termination that
agrees with all the codes and appliance manufacturer’s requirements.
See "Planning your installation" on page 4.
2. Venting configurations are specific to each gas appliance. Manufacturer’s
installation instructions will provide restrictions regarding maximum and
minimum vent runs, number of elbows, as well as the relationships
between lengths of vent run to vent rise.
3. Place the gas appliance in its final position. Hold a plumb bob from the
ceiling and align it with the centerline of the appliance flue outlet (or the
first elbow if the appliance has a horizontal outlet). Mark the position on
the ceiling. If there is an obstruction (e.g. framing), an offset will be
required. Refer to the section "Elbows and Offsets" on page 12 to
determine the components required for the offset.
4. Refer to the “Supports” section on page 13 to choose the appropriate
support for your application. The maximum support capacity is indicated
in the table "EXCELDirect®Technical Specifications", on page 2.
Important: A firestop is required at each floor, installed from below.
5. Cut and frame a hole in the ceiling to the dimensions indicated in the
"EXCELDirect®Technical Specifications" table on page 2. Dimensions will
vary depending on the type of support used. See the appliance
manufacturer's installation instructions for exact clearance requirements.
6. EXCELDirect®fits most standard appliance outlet collars without an
adapter, but appliance adapters are required for certain brands and
applications. Insert the first length or adapter on the appliance outlet and
fasten it to the appliance using the three #6 x 3/8" sheet metal screws
provided. See appliance manufacturer’s requirements if sealant is
required for the first length.
7. Continue adding and fastening vent components until the vent passes
through the support at the ceiling.
8. Place a mark on the length that passes through the support at the location
where it meets the support. This is where the Universal Support Collar
will be installed. Remove the length for the support collar to be installed.
9. Pre-assemble the support collar (for either 6 5/8"
or 8" outer casing) as shown in Figure 9. Install
the collar on the length of vent that will pass
through the support and tighten the locking bolt
at your mark. Permanently fasten the collar using
three metal screws. Install the vent length in the
support and connect it to the length below using
the screws provided.
Figure 9
Universal Support Collar
10. Proceed the same way if you have to pass through supports on other
floors.

EXCELDirect®11 Owner's Manual
11. At the attic level, if the vent is not enclosed,
see the "Attic" section in this manual for the
installation alternatives offered to you. If the
vent is enclosed in the attic, always keep at
least 1" clearance to combustibles unless
the gas appliance manufacturer's
installation instructions specify different
clearances.
12. Continue adding vent lengths through the
roof until the required vent height extends
to a point above the roof which complies
with local or national code requirements
and with the gas appliance manufacturer's
installation instructions. See Figure 11 and
Table 1. The maximum height of un-guyed
vent above the roof is 5 feet. If you have
more than 5 feet use the EXCEL Chimney
Roof Brace (XM-ERB).
13. Install the appropriate roof flashing for your roof pitch: Seal the joint
between the roof and the flashing with roofing tar or silicone sealant. For
pitched roofs, place the flashing under the upper shingles and on top of
the lower shingles - approximately half of the flashing should be under the
shingles. Nail the flashing to the roof using roofing nails. Place the storm
collar over the vent and the flashing. Bend the tab on the collar in the
appropriate slot. Seal the storm collar to the venting with silicone sealant.
14. Install a vertical termination cap (SVT) on top of the vent. Fasten it using
three #6 x 3/8" sheet metal screws provided.
15. An optional Vertical Wind/Heat Shield (SVTS) is available that can
improve cap performance in high winds.
Figure 10 –Clearances
Figure 11
Roof Requirements
Table 1 - Minimum Recommended Vent
Height
Roof Pitch
Minimum Height (H)
Feet
Meter
Flat to 7/12
1' - 0"
0.3
Over 7/12 to 8/12
1' - 6"
0.46
Over 8/12 to 9/12
2' - 0"
0.61
Over 9/12 to 10/12
2' - 6"
0.76
Over 10/12 to 11/12
3' - 3"
0.99
Over 11/12 to 12/12
4' - 0"
1.22
Over 12/12 to 14/12
5' - 0"
1.52
Over 14/12 to 16/12
6' - 0"
1.83
Over 16/12 to 18/12
7' -0"
2.13
Over 18/12 to 20/12
7' - 6"
2.29
Over 20/12 to 21/12
8' - 0"
2.44

EXCELDirect®12 Owner's Manual
DE90S
DE90
DE45
DE30
Elbows and Offsets
If the vent cannot pass directly above the stove, an offset will be required. Use
Figure 12 and Table 2 to determine the parts required. Whenever possible,
use 45° elbows instead of 90° elbows because they offer less restriction.
Figure 12 - Vent Offset
Table 2 - Vent Offset Specifications
Flue
Ø
Elbow
Offset &
Rise
Length between elbows
No
Length
6"
12"
24"
48"
4"
30°
Offset
Rise
45°
Offset
4 3/8"
7 ½"
11 ¾"
20 ¼"
37 ¼"
Rise
10 ½"
13 5/8"
17 7/8"
26 3/8"
43 3/8"
90°
Offset
10 ¾"
15 ¼"
21 ¼"
33 ¼"
57 ¼"
Rise
10 ¾"
10 ¾"
10 ¾"
10 ¾"
10 ¾"
5"
30°
Offset
Rise
45°
Offset
4 7/8"
8"
12 ¼"
20 ¾"
37 ¾"
Rise
11 ¾"
14 7/8"
19 1/8"
27 5/8"
44 5/8"
90°
Offset
12"
16 ½"
22 ½"
34 ½"
58 ½"
Rise
12"
12"
12"
12"
12"
Firestops
A firestop is required on each floor, ceiling or wall. The only place where a
firestop is not required is at the roof level. EXCELDirect®offers different types
of firestops to fit all possible applications.
- On a horizontal installation, the Insulated Wall Thimble (WT) acts as a
firestop (Figure 4). In cases where the Wall Thimble is not required (only
for 100% non-combustible walls), the Trim Plate (TP) or round Trim Ring
(TR) can be used as a firestop, otherwise they are simply used as
decorative trims.

EXCELDirect®13 Owner's Manual
- On vertical installations the Trim Plate (TP), Trim Ring (TR), Ceiling Support
(CS), Round Support (RDS), Square Support (SS), and Attic Radiation
Shield (AS) can all be used as firestops.
Supports
EXCELDirect®has different supports for different applications. For
convenience, some supports also act as firestops to optimize your installation.
The "EXCELDirect®TECHNICAL SPECIFICATIONS" section on page 2
shows the maximum support capacity table for each type of support. Here are
different types of installation with supports.
Ceiling Support / Firestop (CS)
Pass the venting through the support and then fix the support to the pipe
with the three tabs that were previously bent downwards. Use the screws
provided.
Round and Square Support / Radiation Shield (RDS & SS)
The Round Support or Square Support / Radiation Shield are used when the
venting system is not enclosed and a visual effect is desired (e.g. a
freestanding gas stove). These supports are installed from below. Figure 14
shows an example. Screw the support to the framed joist with four #8 x 1 1/2"
wood screws or use the support collar supplied with the Round Support. The
supports are designed to project below the ceiling for a visual effect into the
room (1/4” below the ceiling minimum). Place the Finish Trim around the
support and fasten it to the ceiling using the screws provided.
Note: When the Round Support / Radiation Shield is used, the framing in the
ceiling can be square as previously described, but the drywall cut in a circle.
The Ceiling Support/Firestop can be used on
any floor level. It is the best choice when a
structure hides the venting system (enclosed
chimney).
Cut and frame a hole to the rough opening
dimensions shown in the table on Page 2. Screw
the corners of the support to the framing from
below with four #8 x 1 1/2" wood screws.
Bend the three tabs in the center of the opening
downwards, into the room. Then, using another
four #8 x 1 1/2" wood screws, attach the Ceiling
Support to the framing through the vertical
spacers as shown in Figure 13.
Figure 13
Ceiling Support/Firestop

EXCELDirect®14 Owner's Manual
As shown in Figure 15, the Square Support is designed for cathedral ceilings.
From below, push the support into the framed hole. Screw the support to the
framed joist with four #8 x 1 1/2" wood screws. Place the two parts of the
Finish Trim around the support and fasten it to the ceiling using the four screws
provided. The support must project below the ceiling a minimum of 1/4" into
the room.
Adjustable Wall Support (WS)
When you are certain of the bracket locations, use two #8 x 1 1/2" or larger
screws in the round holes to firmly attach the brackets in place. Ensure the
screws are solidly fastened to the wall structure. The wall support brackets
are slotted to allow them to adjust in and out. Adjust the brackets so that
the vent is parallel to the wall at the clearance specified by the appliance
manufacturer's installation instructions.
4. Tighten the universal support collar around the vent, and then secure it
using three #6 x 3/8" screws provided.
Note: The Adjustable Wall Support can also be used to support horizontal
run of venting.
Figure 14 -
Round & Square Support/
Radiation Shield
Figure 15 -
Square Support
Figure 16 - Round &
Square Support/
Radiation Shield
This support (Figure 17) is typically used when
you are installing a vertical run near a wall.
1. Pre-assemble the universal support collar to fit
either the 6 5/8” or 8" outside vent casing.
2. Install the support collar on the vent. Tighten
the collar locking bolt just enough to hold the
wall support in place.
3. Fasten the wall support brackets to the wall in
a convenient location. First, drive two #8 x 1
1/2” or larger screws into the slotted holes.
Figure 17
Adjustable Wall Support

EXCELDirect®15 Owner's Manual
Offset Support (OS)
When an offset is necessary in a vertical venting system (Figure 18), it is
important to support the vent to avoid excessive stress on the elbows.
1. Pre-assemble the universal support collar as shown for the correct vent
size. The collar is adjustable for the 6 5/8” or 8” outside vent casing.
2. Install the universal support collar on
the vent. Tighten the collar locking
bolt just enough to hold the collar in
place.
3. Fasten the strapping of the offset
support to the framing with two #8 x 1
1/2" or larger screws on each straps.
See drawing 18.
4. Tighten the universal support collar
around the vent then secure it using
three #6 x 3/8" screws provided.
Note: The Offset Support can also be
used to support horizontal runs of
venting.
Figure 18 - Offset Support
Attic
If the vent is not enclosed in the attic, the
following installation alternatives are
possible:
Alternative 1
A Round Support (RDS) with a Storm
Collar (SC) on top or a Square
Support (SS) with a Square Support
Storm Collar (SQSC) on top to prevent
loose fill insulation from falling in the
space between the direct vent and the
support. Figure 19.
Figure 19 - Alternative 1
Support Box / Radiation Shield

EXCELDirect®16 Owner's Manual
Alternative 2
Attic Radiation Shield / Firestop (AS)
installed from below the ceiling if no
support is required as shown in
Figure 20. A Storm Collar (SC) must be
added to prevent loose fill insulation
from falling in the space between the
direct vent and the shield.
The Trim Plate (TP) or Trim Ring (TR)
can be added as a decorative finish at
the ceiling.
This alternative does not provide any
support.
Figure 20 –Alternative 2
Attic Radiation Shield
Masonry Chimney Installation - Co-linear venting
This application is for appliances (normally gas inserts) with two co-linear
outlets. We recommend using EXCELDirect®UL/ULC Certified Aluminum
Flex. If using an EXCELDirect®masonry termination cap, ensure it is used
with a listed flexible lining system that has been certified to the requirements
of the ANSI/CSA Appliance Standard. Always refer to the manufacturer's
Installation instructions for approval. The following options are available for
lining a masonry chimney:
Part Code
Description
ALK33 / ALK43
Standard 35’ Co-linear Aluminum Flex Kit 3”x3” or 4”x3” (includes two 35’ flex lengths,
IVT cap, MFR flashing, hose clamps)
ALT33 / ALT43
Traditional 35’ Co-linear Aluminum Flex Kit 3”x3” or 4”x3” (includes two 35’ flex
lengths, CT3 or CT4 cap, CTF flashing, hose clamps)
ALØ30 / ALØ50
Aluminum Flex Roll (Flex Only) in 3” or 4” diameter 30’ or 50’ long
IVT
Insert Vertical Termination (fits 3x3 or 4x3 outlets)
CT3 / CT4
Traditional Co-linear Chimney Cap 3x3 or 4x3 outlets
CTS
Rain / Wind Shield for CT3, CT4 & PCT cap
4CAA
Co-Axial to Co-Linear Appliance Adapter
4MAC33
Co-Linear Masonry Adapter 3”-3”
CTA / CTA4
Co-linear Termination Adapter 3x3 or 4x3
CFAA3 / CFAA4
Flex Liner Connector (3” or 4”)
MFR
Universal Flashing for Round Caps
MFC
Clay Tile Flashing for Round Caps
MF
Masonry Chimney Flashing (stainless)
CTF
Universal Flashing for Traditional Caps
CTFC
Clay Tile Flashing for Traditional Caps
HC
Hose Clamp Bracket for Clay Tile Flashings
IVTP
Prefab Chimney Top Adapter for IVT
Co-linear Flex Kits (ALK33/43 or ALT33/43)
EXCELDirect co-linear flex kits include two 35’ coils of UL certified two-ply
aluminum flex, a co-linear cap, a flashing and hose clamps.
Co-linear Termination Adapter (CTA)
Available for 3” or 4” exhaust, the Co-linear Termination Adapter converts two
flexible liners to a standard co-axial vent system and has a built-in flashing.

EXCELDirect®17 Owner's Manual
Additional rigid EXCELDirect®lengths can be added on top of the CTA to
increase the system height if necessary (Figure 21).
Traditional Co-linear Termination (CT)
Available for 3” or 4” exhaust, the Traditional Co-linear Termination is
rectangular and resembles a traditional masonry cap (Figure 21). Installation
of the CT requires a flashing (CTF, CTFC).
Insert Vertical Termination (IVT)
The Insert Vertical Termination is a vertical termination cap with a built-in co-
linear adapter at the base. Installation of the IVT requires a flashing (MF, MFR,
MFC). The IVT includes connectors for appliances that use either 3” or 4”
exhaust (Figure 21).
Note: The inside of the masonry chimney must be big enough to
accommodate the two flex liners (typically 7" I.D., 6"x6", etc.). The existing
chimney also needs to be completely cleaned of soot and creosote. Have the
masonry chimney inspected by a qualified technician (sweep, building
inspector, etc.) for structural integrity.
1. To determine the length of flex liner required, measure the distance
between the top of chimney and the gas appliance. Cut two lengths of
Listed flex pipe to this length. The flex should already be extended to its
nominal length. If the liner is unidentified, mark one of the two liners at the
top and bottom as either exhaust or intake to prevent confusion later.
2. Prior to inserting the flex liners, prepare the flashing (or baseplate if using
the CTA). If the flashing is larger than the top of the chimney, then cut and
fold it as needed to fit. Do not seal it in place yet, set it aside.
3. Slide the two flex liners down through the masonry chimney one by one.
Be careful when you pass through the damper not to damage the flex liner.
Figure 21 –Co-linear Masonry Installation

EXCELDirect®18 Owner's Manual
If you have to join two lengths of flex liner together use the Flex Liner
Connector (CFAAØ) as shown in Figure 22.
4. Install the flashing on the top of the chimney. Seal the flashing to the
chimney with silicone sealant and masonry bolts before proceeding (Figure
21).
5. Attach the two flex liners to the outlets with hose clamps or screws. High
temperature sealant is recommended for the liner (and increaser) that will
be used for exhaust (Figure 21).
Co-linear Adapters (4CAA & 4MAC33)
6. Depending upon the type of connection your appliance has, it will require
you to connect the two flex liners directly to the appliance or to install a Co-
axial to Co-linear Appliance Adapter (4CAA) or Co-linear Masonry Adapter
(4MAC33). See Figure 22.
a. If the outlet of your appliance consists of two separate outlets at the
back of the unit, see the appliance manufacturer’s installation
instructions for connection details before proceeding to step 7.
b. If a Co-axial to Co-linear Appliance Adapter (4CAA or 4MAC33) is
needed, then fasten the adapter to the appliance using the three sheet
metal screws provided before proceeding.
7. Line up the flex liners with the two outlets on the gas appliance. Ensure
that the flex liner connected to the flue side of the termination is connected
to the flue of the appliance. Use high temperature sealant and the hose
clamps provided to seal the joint of the flue portion. Sealant is not required
for the air intake, only a hose clamp, unless otherwise specified in the
manufacturer’s installation instructions. Do not let the flex liner sag below
the level at which it is connected to the gas appliance or adapter. This could
allow hot gas to become trapped and potentially become a fire hazard. The
flex liner path should always be sloped up toward the termination cap.
8. Move the gas appliance to its final position.

EXCELDirect®19 Owner's Manual
Figure 22 - Appliance connection method for co-linear installation

EXCELDirect®20 Owner's Manual
Horizontal and vertical termination location
Figure 23 - Horizontal and vertical termination location
INSTALLATION
CANADIAN 1
U.S.A 2
A
12 in. (30 cm)
12 in. (30 cm)
Clearance above grade, veranda, porch, deck, or
balcony.
B
12 in. (305 mm)3
9 in (23 cm)4
Clearance to a window or door that may be
opened.
C
12 in. (30 cm)5
12 in. (30 cm)5
Clearance to a permanently closed window.
D
18 in. (45 cm)
18 in. (45 cm)
Clearance to a ventilated soffit located above the
termination within a horizontal distance of 2 feet
from the center-line of the termination.
E
12 in. (30 cm)
12 in. (30 cm)
Clearance to an unventilated soffit.
F
As tested by appliance Manufacturer
Clearance to an outside corner.
G
Clearance to an inside corner.
H
36 in. (90cm)
36 in. (90cm)6
Clearance to each side of the centerline extended
above the meter/regulator assembly to a
maximum vertical distance of 15 feet.
I
36 In. (90cm)
36 In. (90cm)6
Clearance to service regulator vent outlet
J
12 in. (30 cm)
12 in. (30 cm)
Clearance to a non-mechanical air supply inlet to
the building or the combustion air inlet to any
other appliance
K
6 feet (1.83m)
6 feet (1.83m)
Clearance to a mechanical air supply inlet
L
7 feet (2.13m)7
7 feet (2.13m)6
Clearance above a paved sidewalk or a paved
driveway located on public property.
M
12 in. (30 cm)8
12 in. (30 cm)6
Clearance under a veranda, porch, deck or
balcony.
N
---
---
Refer to Figure 11 and Table 1 on page 11
1: In conformity with the current Natural Gas and Propane Installation Code, CAN/CSA B149.1.
2: In conformity with the current National Fuel Gas Code, ANSI Z223.1.
3: 6 in. (15cm) for an appliance ≤ 10 000 BTU/h (3 Kw), 12 in. (30cm) for an appliance > 10 000 BTU/h (3
Kw) and ≤ 100 000 BTU/h (30 Kw), 36 in. (90cm) for an appliance > 100 000 BTU/h (30 Kw).
4: 6 in. (15cm) for an appliance ≤ 10 000 BTU/h (3 Kw), 9 in. (23cm) for an appliance > 10 000 BTU/h (3 Kw)
and ≤ 50 000 BTU/h (15 Kw), 12 in. (30cm) for an appliance > 50 000 BTU/h (15 Kw).
5: Recommended to prevent condensation on windows and thermal breakage.
6: This is a recommended distance. For additional requirements, check local code.
7: A vent shall not terminate above a sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings. For additional requirements, check local code.
8: Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2 sides beneath the floor.