TriangleTube Instinct User manual

NOTICE
Vent
Supplement
&
SOLO 110-155-199 & COMBI 155-199
The installation must conform to the
requirements of the authority having
jurisdiction or, in the absence of such
requirements, to the National Fuel Gas
Code, ANSI Z223.1/ NFPA 54, and/or Natural
Gas and Propane Installation Code, CAN/
CSA B149.1.
This document is intended to be used
by a factory trained and qualified
heating contractor or service technician
only. Read all Instructions within this
document and within the relevant Boiler
Installation and Maintenance Manual
before proceeding. It is recommended
to follow the procedures in the steps
given. Skipping or missing procedural
steps could result in substantial property
damage, serious injury, or death.
226981 A02 - Oct 2021
2019-19 Instinct WHB
& FSB Vent
Supplement
THE
ORIGINAL
INNO V A T ORS
WARNING

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iii
TABLE OF CONTENTS
PRODUCT AND SAFETY INFORMATION .................................................................VII
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS..................................................1
1.1. Ventilation and Combustion Air Requirements .................................................................1
1.2. Removal of an Existing Boiler from a Common Vent System ..............................................2
1.3. Vent/Combustion Air Piping and Materials................................................................ 2
1.3.1 PVC and CPVC Vent and Combustion Air Piping and Fittings .................................. 3
1.3.2 PVC and CPVC Pipe Cement and Primer............................................................. 3
1.3.3 AL29-4C® Stainless Steel Vent Piping and Fittings ....................................................3
1.3.4 Polypropylene (PP) Vent Piping and Fittings..............................................................3
1.4. Vent/Combustion Air Equivalent Lengths................................................................. 4
1.5. Vent Restrictions.................................................................................................. 4
1.5.1 2 Inch (60 mm) Vent System Restrictions .................................................................4
1.5.2 Rigid Polypropylene Vent System Restrictions ...........................................................5
1.5.3 Flex Polypropylene Vent System Restrictions ............................................................5
1.6. Combustion Air Contamination .............................................................................. 6
CHAPTER 2 - DIRECT VENT INSTALLATION OF VENT/AIR PIPING.........................11
2.1. Direct Vent - Vertical - Through the Roof or Unused Chimney ..........................................11
2.1.1 Determine Termination Location.................................................................................11
2.1.2 Direct Vent - Vent Installation - Through the Roof....................................................12
2.1.3 Termination Fittings - Through the Roof .................................................................13
2.1.4 Direct Vent - Multiple Boiler Installation - Through the Roof ......................................13
2.2. Direct Vent - Horizontal - Sidewall ................................................................................15
2.2.1 Determine Termination Location ...........................................................................15
2.2.2 Direct Vent - Vent Installation - Sidewall .................................................................16
2.2.3 Termination Fittings - Sidewall ..............................................................................16
2.2.4 Direct Vent - Multiple Boiler Installation - Sidewall ...................................................18
2.3. Direct Vent - Vertical Vent and Sidewall Combustion Air..................................................20
2.3.1 Determine Termination Location.................................................................... 20
2.3.2 Direct Vent - Vent Installation - Through the Roof....................................................21
2.3.3 Direct Vent - Combustion Air Installation - Sidewall..................................................21
2.3.4 Termination Fittings - Vertical & Sidewall................................................................22
2.3.5 Direct Vent - Multiple Boiler Installation - Vertical Vent and Sidewall Combustion Air .22
TABLE OF CONTENTS
CHAPTER 3 - CATEGORY IV (INDOOR AIR) INSTALLATION OF VENT/AIR PIPING .... 23
3.1. Category IV - Vertical - Through the Roof or Unused Chimney ........................................ 24
3.1.1 Determine Termination Location ........................................................................... 24

3.1.2 Category IV - Vent Installation - Through the Roof...................................................25
3.1.3 Termination Fittings - Through the Roof.................................................................25
3.1.4 Category IV - Multiple Boiler Installation - Through the Roof ................................... 26
3.2. Category IV - Horizontal - Sidewall .............................................................................. 26
3.2.1 Determine Termination Location .......................................................................... 26
3.2.2 Category IV - Vent Installation - Sidewall ............................................................... 28
3.2.3 Termination Fittings - Sidewall ............................................................................. 28
3.2.4 Category IV - Multiple Boiler Installation - Sidewall................................................. 28
CHAPTER 4 - INSTALLATION REQUIREMENTS........................................................ 29
4.1. Vent/Combustion Air Transitions...........................................................................29
4.1.1 3” (80 mm) to 2” (60 mm) Transitions................................................................ 29
4.2. Connect Piping to INSTINCT ...................................................................................... 30
4.3. Vent and Combustion Air Piping Installation ................................................................. 31
4.3.1 PVC/CPVC Vent System................................................................................. 31
4.3.2 Polypropylene or AL29-4C® Stainless Steel Vent Systems...................................... 32
4.4. Carbon Monoxide Detector Installation ........................................................................ 32
CHAPTER 5 - COMMONWEALTH OF MASSACHUSETTS INSTALLATION
REQUIREMENTS...................................................................................................... 33
5.1. Installation of Carbon Monoxide Detectors .................................................................. 33
5.2. Approved Carbon Monoxide Detectors ........................................................................ 33
5.3. Signage.............................................................................................................33
5.4. Inspection. ............................................................................................................... 33
5.4.1 Exemptions .................................................................................................33
5.4.2 Manufacturer Requirements - Gas Equipment Venting System Provided.................. 34
5.4.3 Manufacturer Requirements - Gas Equipment Venting System Not Provided ........... 34
iv

v
INDEX OF ILLUSTRATIONS AND TABLES
Fig. 1 - Direct Vent - Vertical Termination of Vent and Combustion Air Piping .............................12
Fig. 2 - Termination Clearances of Direct Vent System..............................................................13
Fig. 3 - Vertical Vent Bird Screen Installation ...........................................................................14
Fig. 4 - Vertical Combustion Air Bird Screen Installation ............................................................14
Fig. 5 - Direct Vent - Vertical Termination of Multiple INSTINCT Boilers ......................................14
Fig. 6 - Direct Vent - Sidewall Termination of Vent and Combustion Air Piping .............................17
Fig. 7 - Direct Vent - Alternate Sidewall Termination of Vent and Combustion Air Piping ...............17
Fig. 8- Direct Vent - Sidewall Snorkel Termination of Vent and Combustion Air Piping .................17
Fig. 9 - Sidewall Vent Bird Screen Installation ..........................................................................18
Fig. 10 - Sidewall Combustion Air Bird Screen Installation .........................................................18
Fig. 11 - Direct Vent - Sidewall Termination of Multiple INSTINCT Boilers....................................19
Fig. 12 - Direct Vent - Vertical Vent and Side Wall Combustion Air Terminations ..........................19
Fig. 13 - Direct Vent - Vertical Vent and Sidewall Combustion Air Terminations of
Multiple INSTINCT Boilers ................................................................................. 22
Fig. 14 - Ventilation and Combustion Requirements Sticker Placed on the Appliance ...................23
Fig. 15 - Category - IV - Vertical Termination of Vent Pipe ........................................................24
Fig. 16 - Termination Clearances of Category IV System ...........................................................25
Fig. 17 - Category IV- Vertical Termination of Multiple INSTINCT Boilers ....................................26
Fig. 18 - Category IV - Sidewall Termination of Vent Pipe ..........................................................27
Fig. 19 - Category IV - Sidewall Snorkel Termination of Vent Pipe ..............................................27
Fig. 20 - Category IV - Sidewall Termination of Multiple INSTINCT Boilers ..................................28
Fig. 21 - 2” (60 mm) CPVC/PVC Venting System Vertical .................................................... 29
Fig. 22 - 2” (60 mm) CPVC/PVC Venting System Horizontal ................................................ 29
Table 1 - Maximum Allowable Vent or Combustion Air Piping Length ........................................... 4
Table 2 - Approved AL29-4C® Stainless Steel Vent Adapters and Terminations ........................... 6
Table 3 - Approved 2” (60 mm) Rigid Polypropylene Components .............................................. 7
Table 4 - Approved 3” (80 mm) Rigid Polypropylene Components .............................................. 8
Table 5 - Approved 2” (60 mm) Flex Polypropylene Components................................................ 9
Table 6 - Approved 3” (80 mm) Flex Polypropylene Components................................................ 9

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vii
DANGER
WARNING
CAUTION
BEST PRACTICE
Indicates recommendations made by Triangle
Tube for the installers which will help to ensure
optimum operation and longevity of the
equipment.
WARNING
DANGER
PRODUCT AND SAFETY INFORMATION
DEFINITIONS
The following terms are used throughout this manual
to bring attention to the presence of potential hazards
or to important information concerning the product.
Indicates the presence of a hazardous
situation which, if ignored, will result in
substantial property damage, serious injury,
or death.
Indicates a potentially hazardous situation
which, if ignored, can result in substantial
property damage, serious injury, or death.
Indicates a potentially hazardous situation
which, if ignored, can result in minor property
damage or injury.
NOTICE
Indicates special instructions on installation,
operation or maintenance, which are important
to the equipment but not related to personal injury
hazards.
HOMEOWNER
• This manual is intended for use by a qualified
heating contractor or service technician.
• Please refer to the User Information manual for
additional information.
• Ensure this document and all pertaining documents
are kept near the boiler to be used by the qualified
heating contractor or service technician for future
reference.
INSTALLER
Read all instructions as outlined in this
manual and in the boiler installation manual.
Failure to comply with these instructions in
the order presented can result in substantial
property damage, serious injury, or death.
This document is a supplement to the INSTINCT Boiler
Installation and Maintenance manual. The purpose of
this supplement is to ensure the proper installation of
the vent and combustion air piping to the boiler.
NOTICE
This vent supplement outlines Direct Vent and
Category IV (Indoor Air) installations using
PVC, CPVC, PP and SS materials. For other
venting options (materials, terminations,
etc.), contact Triangle Tube.
A byproduct of any gas fired appliance is
carbon monoxide. Triangle Tube follows the
recommended advice of CPSC and requires
the installation of a minimum of two (2) carbon
monoxide detectors with an alarm and battery
back-up if hard wired; one in the mechanical
room where the boiler is located and another
installed in the area outside each sleeping area
for all installations. Consult the local authority
having jurisdiction for any additional carbon
monoxide detector requirements in your area.
See Chapter 5 on page 33 for additional
carbon monoxide detector requirements in
Massachusetts.
All INSTINCT vent and combustion air
piping must be installed, terminated and
joints sealed as outlined in this manual.
Failure to comply with installation
procedures outlined in this manual will
result in substantial property damage,
serious injury, or death.
NOTICE
Triangle Tube reserves the right to modify the technical specifications and components of its products
without prior notice. Check for an updated version of this manual at www.triangletube.com.

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CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
1
WARNING
WARNING
1.1. Ventilation and Combustion Air
Requirements
The INSTINCT boiler is classified as a Category IV appliance.
This utilizes uncontaminated indoor or outdoor air for
appliance combustion.
A direct vent installation uses the outdoor air. Air supply,
combustion chamber, heat exchanger and evacuation of
POC (products of combustion) for this type of appliance
is sealed with respect to the room in which the appliance
is installed.
An indirect installation uses uncontaminated indoor air
for appliance combustion.
In the case of Indirect vent installation, the
space must be provided with ventilation
/ combustion air openings properly sized
for all make-up air requirements (exhaust
fans, clothes dryers, fireplaces, etc.) and the
total input of all appliances, including the
INSTINCT when located in the same space.
Failure to provide or properly size the
openings can result in substantial property
damage, serious injury, or death.
For installations in which the INSTINCT shares the
space with air movers (exhaust fan, clothes dryers,
fireplaces, etc.) and other combustion equipment (gas
or oil) the space must be provided with adequate air
openings to provide ventilation and combustion air
to the equipment. To properly size the ventilation /
combustion air openings, the installer must comply
with the National Fuel Gas Code (NFPA 54 / ANSI
Z223.1) for installations in the U.S. or CAN/CSA B149.1
for installations in Canada.
When the air for combustion is taken from
the room air grilles must be installed by the
contractor. The air grilles should be sized in
accordance with ANSI Z223.1/ NFPA54 and/
or Natural Gas and Propane Installation Code
CAN/CSA B149.1.
The grille providing air when taking air directly
from the room should be identified to the
consumer and the importance of ensuring that
the grilles are not restricted or blocked in any
way clearly explained to the consumer. The
grilles should be clearly labeled “AIR SUPPLY,
DO NOT COVER OR RESTRICT. FAILURE TO
PROVIDE ADEQUATE AIR FOR COMBUSTION
COULD RESULT IN SERIOUS INJURY, OR DEATH.”
A byproduct of any gas fired appliance is carbon
monoxide (CO), which can be a health hazard when its
concentration in the ambient air is too high.
Triangle Tube follows the recommended
advice of CPSC and requires the installation
of a minimum of two (2) carbon monoxide
detectors with an alarm and battery back-
up if hard wired; one in the mechanical
room where the boiler is located and
another installed in the area outside each
sleeping area for all installations. Consult
the local authority having jurisdiction for
any additional carbon monoxide detector
requirements in your area. See
Chapter 5
of the INSTINCT Installation & Maintenance
Manual
for additional carbon monoxide
detector requirements in Massachusetts.
Failure to comply with these instructions
may result in substantial property damage,
serious injury, or death.
DANGER
CHAPTER 1

CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
2
DANGER
BEST PRACTICE
To reduce the potential risks associated with
indoor contaminates (listed in Section 1.6
- pages 5 & 6), flammable vapors and tight
housing construction (little or no infiltration
air), it is recommendedtopipeuncontaminated
combustion air directly from the outdoors to
the appliance. This practice also promotes
higher system efficiency by reducing heated
indoor air from being exhausted from the
building and replaced by cold infiltration air.
WARNING
1.2. Removal of an Existing Boiler from a
Common Vent System
Do not install the INSTINCT into a common
vent with any other gas or oil appliances.
This will cause flue gas spillage or appliance
malfunction, resulting in substantial
property damage, serious injury, or death.
When an existing boiler is removed from a common venting
system, the common venting system is likely to be too large
for proper venting of the remaining appliances. At the time
of removal of an existing boiler, the following steps shall be
followed with each appliance remaining connected to the
common venting system placed in operation, while the
other appliances remaining connected to the common
venting system are not in operation.
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size
and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion and other
deficiencies which could cause an unsafe condition.
3. Insofarasispracticalcloseallbuildingdoorsandwindows
andall doorsbetweenthespace inwhichthe appliances
remaining connected to the common venting system
are located and other spaces of the building. Turn on
clothes dryers and any appliance not connected to the
commonventingsystem.Turn onany exhaust fans, such
as range hoods and bathroom exhausts, so they will
operate at maximum speed. Do not operate a summer
exhaust fan. Close fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
5. Test for spillage at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a
match or candle, or smoke from a cigarette, cigar orpipe.
6. After it has been determined that each appliance
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers and any
othergas-burningappliancetotheirpreviousconditionof
use.
7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or CAN/CSA B149.1, Installation
Codes. When resizing any portion of the common
venting system, the common venting system
should be resized to approach the minimum size as
determined using the appropriate tables in Part 11
of the National Fuel Gas Code, ANSI Z223.1/NFPA 54
and/or CAN/CSA B149.1, Installation Codes.
1.3. Vent/Combustion Air Piping and Materials
NOTICE
• The INSTINCT appliance is supplied with
an acoustic dampening foam rubber insert
located in the appliance air inlet adaptor.
DO NOT remove this at installation.
• For INSTINCT 110 & 155 Models only, propane
conversions require an additional acoustic
foam insert to be fitted within the combustion
air piping. Consult LP Conversion Instructions
for proper fitting.
• The installation must conform to the
requirements of the authority having
jurisdiction or, in the absence of such
requirements, to the National Fuel Gas Code,
ANSI Z223.1/ NFPA 54, and/or Natural Gas and
Propane Installation Code, CAN/CSA B149.1.
The INSTINCT is certified per ANSI Z21.13 as a Category IV
(indoor air) or Direct Vent (sealed combustion) appliance.
A Category IV appliance utilizes uncontaminated indoor or
outdoor air (surrounding the appliance) for combustion.
A Direct Vent appliance utilizes uncontaminated outdoor
air (piped directly to the appliance) for combustion.
The INSTINCT requires a Category IV venting system which
is designed for pressurized venting and condensate.
The vent and combustion air materials (piping,
fittings and cement) must meet the listed
requirements in this manual.
Failure to comply with these material
requirements can result in substantial property
damage, serious injury, or death.
CHAPTER 1

CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
3
WARNING
WARNING
1.3.1 PVC and CPVC Vent and Combustion Air
Piping and Fittings
• PVC Schedule 40 - ANSI/ASTM D1785
• PVC-DWV - ANSI/ASTM D2665
• CPVC Schedule 40 - ANSI/ASTM F441
1.3.2 PVC and CPVC Pipe Cement and Primer
• PVC - ANSI/ASTM D2564
• CPVC - ANSI/ASTM F493
NOTICE
• For installations in Canada, all piping,
fittings and cement/primer material must be
certified and listed to ULC-S636. Ipex Inc. is
an approved manufacturer of ULC S636 vent
components.
• Useofcellularcore PVC(ASTMF891) cellular
core CPVC, or Radel® (polyphenolsulfone)
in venting systems is prohibited. Cellular
core pipe may be used for combustion air
piping.
DO NOT mix a PVC/CPVC vent system &
components with other vent system materials
& components. Seal all PVC and CPVC pipe
and fittings with the appropriate primer and
cement.
Failure to comply with this requirement can
cause the venting system to fail resulting in
substantial property damage, serious injury, or
death.
1.3.3 AL29-4C® Stainless Steel Vent Piping and
Fittings
Approved AL29-4C® Stainless Steel vent manufacturers
and vent systems:
• SelKirk/Heatfab
• DuraVent
• Z-FLEX U.S. Inc.
Only use approved AL29-4C® stainless steel vent
adapters and terminations listed in Table 2 on page
6.
Contact approved AL29-4C® Stainless
Steel vent manufacturer for a copy of their
installation instructions. Read, understand
and follow all of the vent manufacturer’s
instructions before beginning the installation.
Contact vent manufacturer if you require any
technical support.
Failure to properly install and support vent
system can cause the venting system to fail,
resulting in substantial property damage,
serious injury, or death.
NOTICE
When using AL29-4C® stainless steel for the
vent system, PVC or CPVC pipe meeting the
listed requirements in this manual may be
utilized for the combustion air piping.
1.3.4 Polypropylene (PP) Vent Piping and Fittings
Approved polypropylene vent manufacturers and vent
systems:
• Centrotherm Eco Systems, LLC
• DuraVent
• Z-Flex U.S. Inc.
• ECCO Manufacturing
Only use approved polypropylene components listed
in Table 3 on page 7 to Table 6 on page 9.
Termination must be selected from the options shown
in this manual, using UV-resistant polypropylene.
Contact approved polypropylene vent
manufacturer for a copy of their installation
instructions. Read, understand and follow
all of the vent manufacturer’s instructions
before beginning the installation. Contact
vent manufacturer if you require any
technical support.
Failure to properly install and support vent
system can cause the venting system to fail,
resulting in substantial property damage,
serious injury, or death.
WARNING
CHAPTER 1

CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
4
WARNING
NOTICE
1.5. Vent Restrictions
• A specific vent adapter may be required to
transition from the boiler vent outlet adapter
to the specific polypropylene vent system.
Contact the appropriate PP vent
manufacturer for transition adapter
information.
• When using Polypropylene for the vent
system, PVC or CPVC pipe meeting the
listed requirements in this manual may be
utilized for the combustion air piping.
1.4. Vent/Combustion Air Equivalent Lengths
• For all venting applications, PVC/CPVC, AL29-4C®
Stainless Steel or Polypropylene, the length must
not exceed the lengths listed in Table 1 below.
NOTICE
• The 90 ° elbows used to terminate the
combustion air inlet and vent outlet
exterior of the building have been
accounted for in the maximum allowable
vent or combustion air piping length
provided in Table 1below .
• For PVC/CPVC or AL29-4C® Stainless Steel vent
systems, reduce the maximum allowable length
from Table 1 for each elbow as follows:
• 3 feet (0.9 m) for every 45º elbow
• 5 feet (1.5 m) for every 90º elbow
• For polypropylene vent systems, reduce the
maximum allowable length from Table 1 for each
elbow as follows:
• 5 feet (1.5 m) for every 45º elbow
• 10 feet (3 m) feet for every 90º elbow
1.5.1 2 Inch (60 mm) Vent System Restrictions
• The 2 inch (60 mm) vent system requires a 1 inch
(2.5 cm) clearance to combustibles.
• Use long sweep elbows to limit pressure drop and
to avoid excessive vent temperatures.
• In 2 inch (60 mm) PVC vent applications, the first 7
equivalent feet of the vent system must utilize CPVC
material.
To avoid vent failure, the installer must use
CPVC vent material for the first 7 equivalent
feet of a 2 inch (60 mm) PVC vent system. The
installer must also utilize primer and glue that
is certified for both PVC/CPVC materials.
Failure to comply with this requirement can
cause the venting system to fail, resulting in
substantial property damage, serious injury,
or death.
NOTICE
• The 3 x 2 Inch reducer required for 2 Inch
venting has been accounted for in the
maximum allowable vent or combustion air
piping length provided in Table 1 below.
NOTICE
• LP Conversions of all Instinct models MUST be
installedusinga3”(80mm)vent/combustion
air system.
Table 1 - Maximum Allowable Vent or Combustion Air Piping Length
INSTINCT
Model
2 Inch [60 mm] Piping
OR
3 Inch [80 mm] Piping
Feet
Elbows
Feet
Elbows
Solo 110 28 0 100 0
Solo 155 28 0 100 0
Solo 199 N/A N/A 100 0
Combi 155 28 0 100 0
Combi 199 N/A N/A 100 0
* 2” (60 mm) option only available for Natural Gas Installations
CHAPTER 1

CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
5
WARNING
WARNING
1.5.2 Rigid Polypropylene Vent System
Restrictions
Contact approved polypropylene vent
manufacturer for a copy of their installation
instructions. Read, understand and follow all
of the vent manufacturer’s instructions before
beginning the installation. Contact vent
manufacturer if you require any technical
support.
Failure to properly install and support vent
system can cause the venting system to fail,
resulting in substantial property damage,
serious injury, or death.
• Rigid polypropylene vent pipe must be installed
with approved locking band clamps or connector
rings and supports (wall strap or clamp, elbow or
base, etc.). Consult vent manufacturer for complete
list of required parts.
• Maintain 5/8” [1.6 cm] per foot slope back toward
appliance on all horizontal runs.
• The use of a wall plate is required to seal rigid
polypropylene vent pipe at the entrance of the
chimney or chase to prevent mortar or cement
from contacting the polypropylene vent pipe.
• Any termination piping external to the building
must be UV resistant.
• Do not apply insulation directly to vent. Maintain
vent manufacturers clearances to combustibles.
• Plastic venting systems shall not pass through
rated fire separations without approved fire
stopping installed in accordance with fire stopping
manufacturers instructions.
• Prior to assembly of any joints, ensure joint gasket
is present and properly installed. Contact vent
manufacturer if gasket is missing or damaged. Verify
the integrity of joints upon completion of the vent
system.
1.5.3 Flex Polypropylene Vent System
Restrictions
• 2”[60 mm] Flex polypropylene venting is limited up
to the INSTINCT Solo 110.
Contact approved polypropylene vent
manufacturer for a copy of their installation
instructions. Read, understand and follow all
of the vent manufacturer’s instructions before
beginning the installation. Contact vent
manufacturer if you require any technical
support.
Failure to properly install and support vent
system can cause the venting system to fail,
resulting in substantial property damage,
serious injury, or death.
• Approved for vertical installations only, where a
clean, structurally sound unused chimney or chase
is used as a raceway.
• Vertical offsets must not exceed 45° and are limited
to a maximum number of 2.
• Requires rigid polypropylene vent pipe with
approved locking band clamps or connector
rings and wall straps or support clamps from the
appliance to the entrance of the chimney or chase.
• Maintain 5/8” [1.6 cm] per foot slope back
toward appliance on all horizontal runs of rigid
polypropylene vent pipe.
• The use of a wall plate is required to seal rigid
polypropylene vent pipe at the entrance of the
chimney or chase to prevent mortar or cement
from contacting the polypropylene vent pipe.
• Requires supports (elbow or base, flex chimney
and bracket), spacers, chimney cap and end pipe.
Consult vent manufacturer for complete list of
required parts.
• Any termination piping external to the building
must be UV resistant.
• Do not apply insulation directly to vent. Maintain
vent manufacturers clearances to combustibles.
• Flex plastic venting systems shall not pass through
rated fire separations.
• Prior to assembly of any joints, ensure joint gasket
is present and properly installed. Contact vent
manufacturer if gasket is missing or damaged. Verify
the integrity of joints upon completion of the vent
system.
CHAPTER 1

CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
6
DANGER
DANGER
1.6. Combustion Air Contamination
If the INSTINCT combustion air inlet is located in an
area likely to cause or contain contamination, or if
products which could contaminate the air cannot
be removed, the combustion air must be repiped
and terminated at another location. Contaminated
combustion air will damage the unit and its burner
system, and can result in substantial property
damage, serious injury, or death.
Do not operate the INSTINCT if the combustion
air inlet is located near a laundry room or pool
facility. These areas will always contain hazardous
contaminants.
Pool, laundry, common household, and hobby
products often contain fluorine or chlorine
compounds. When these chemicals pass through
the burner and vent system, they can form strong
acids. These acids will corrode the heat exchanger,
burner components, and vent system, causing
serious damage and possible flue gas spillage or
water leakage into the surrounding area.
Please read the information listed on the right.
If contaminating chemicals are located near the
area of the combustion air inlet, the installer
must pipe the combustion air inlet to an area free
of these chemicals.
Failure to comply with these instructions will
result in substantial property damage, serious
injury, or death.
If the combustion air is taken from the room,
an air grille must be installed to provide air for
combustion. The air grilles should be sized in
accordance with ANSI Z223.1/ NFPA54 and/or
Natural Gas and Propane Installation Code CAN/
CSA B149.1.
The grilles providing air supply taken from within
the property should be clearly labeled “AIR SUPPLY,
DO NOT COVER OR RESTRICT. FAILURE TO PROVIDE
ADEQUATE AIR FOR COMBUSTION COULD RESULT
IN SERIOUS INJURY, OR DEATH.”
Potential contaminating products
• Spray cans containing chloro/fluorocarbons
• Permanent Wave Solutions
• Chlorinated wax
• Chlorine based swimming pool chemicals / cleaners
• Calcium Chloride used for thawing ice
• Sodium Chloride used for water softening
• Refrigerant leaks
• Paint or varnish removers
• Hydrochloric acid / muriatic acid
• Cements and glues
• Antistatic fabric softeners used in clothes dryers
• Chlorine-type bleaches, detergents, and
cleaning solvents found in household laundry
rooms
• Adhesives used to fasten building products and
other similar products
Areas likely to contain these products
• Dry cleaning / laundry areas and establishments
• Beauty salons
• Metal fabrication shops
• Swimming pools and health spas
• Refrigeration Repair shops
• Photo processing plants
• Auto body shops
• Plastic manufacturing plants
• Furniture refinishing areas and establishments
• New building construction
• Remodeling areas
• Garages with workshops
A Direct Vent appliance utilizes uncontaminated outdoor
air (piped directly to the appliance) for combustion.
Table 2 - Approved AL29-4C® Stainless Steel Vent Adapters and Terminations
Description
SelKirk / Heatfab
Saf-T Vent EZ Seal or
Saf-T Vent SC
DuraVent
FasNSeal or CVS
Z-Flex U.S. Inc.
Z-Vent
3” Vent Adapter
Not required
Not required
Not required
3” Roof & Side Wall Straight Termination
9392
300186
2SVSTPF03
3” Side Wall & 45° Elbow Termination
9311TERM
300130 & 300186
2SVSTEX0345
3” Side Wall Tee Termination
9390TEE
300311
2SVSTTF03
WARNING
CHAPTER 1

Table 3 - Approved 2” (60 mm) Rigid Polypropylene Components
Description
Centrotherm Eco
Systems, LLC
DuraVent Z-Flex U.S. Inc. ECCO Manufacturing
3” (80 mm) Appliance Vent Adapter ISAAL0303 3PPS-03PVCM-2PPF 2ZDCPVCG3 3PPSSAD
3” (80 mm) to 2” (60 mm) Reducer ISRD0302 N/A 2ZDR32 302PRED
2” (60 mm) Roof Termination - UV
Resistant
ISEP02 (20” or 50 cm) or
ISEP0239
(39” or 100 cm)
2PPS-12BC (12” or 30 cm) or
2PPS-36BC
(36” or 91 cm)
2ZDP212UV (10” or 25 cm) or
2ZDP224UV
(22” or 60 cm)
212PPPB (10” or 25 cm) or
224PPPB (22” or 60 cm)
2” (60 mm) Side Wall, 45° Elbow
Termination - UV Resistant
ISELL0245UV 2PPS-E45BC 2ZDE245UV 245PELB
2” (60 mm) Side Wall, Tee
Termination - UV Resistant
ISTT0220 2PPS-TBC 2ZDTT2 N/A
2” (60 mm) Side Wall Pipe
Lengths - UV Resistant
ISVL022UV (24” or 61 cm)
2PPS-12BC (12” or 30 cm) or
2PPS-36BC
(36” or 91 cm)
2ZDP212UV (10” or 25 cm) or
2ZDP224UV
(22” or 60 cm)
212PPPB (10” or 25 cm) or
224PPPB (22” or 60 cm
2” (60 mm) Side Wall, 90° Elbow -
UV Resistant ISELL0287UV
2PPS-E90BC or 2PPS-E90EBC 2ZDE287UV 287PELB
2” (60 mm) Bird Guard Screen - UV
Resistant IASPP02 2PPS-BG 2ZDES2 2PPWG
2” (60 mm) Locking Band Clamp or
Connector Ring
IANS02 2PPS-LC 2ZDLC2 2PPLC
2” (60 mm) Wall Strap or Support
Clamp
IASCM02
2PPS-WSM1 (galvanized) or
2PPS-WSM-SS1 (stainless
steel)
2ZDFB2 2PPB
2” (60 mm) Wall Plate IAWP02BP 2PPS-WPB 2ZDWPB2 2PPWTK
CHAPTER 1
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
7

Table 4 - Approved 3” (80 mm) Rigid Polypropylene Components
Description
Centrotherm Eco
Systems, LLC
DuraVent Z-Flex U.S. Inc. ECCO Manufacturing
3” (80 mm) Appliance Vent Adapter ISAAL0303 N/A 2ZDCPVCG3 3PPSSAD
3” (80 mm) Roof Termination - UV
Resistant
ISEP03 (20” or 50 cm) or
ISEP0339
(39” or 100 cm)
3PPS-12BC (12” or 30 cm) or
3PPS-36BC (36” or 91 cm)
2ZDP312UV (10” or 25 cm) or
2ZDP324UV (22” or 60 cm)
312PPPB (10” or 25 cm) or
324PPPB (22” or 60 cm)
3” (80 mm) Side Wall, 45° Elbow
Termination - UV Resistant ISELL0345UV 3PPS-E45BC 2ZDE345UV 345PELB
3” (80 mm) Side Wall, Tee
Termination
- UV Resistant
ISTT0320 3PPS-TBC 2ZDTT3 N/A
3” (80 mm) Side Wall Pipe Lengths -
UV Resistant
ISVL032UV (24” or 61 cm)
3PPS-12BC (12” or 30 cm) or
3PPS-36BC
(36” or 91 cm)
2ZDP312UV (10” or 25 cm) or
2ZDP324UV (22” or 60 cm)
312PPPB (10” or 25 cm) or
324PPPB (22” or 60 cm)
3” (80 mm) Side Wall, 90° Elbow -
UV Resistant ISELL0387UV
3PPS-E90BC or 3PPS-E90EBC 2ZDE387UV 387PELB
3” (80 mm) Bird Guard Screen -
UV Resistant
IASPP03 3PPS-BG 2ZDES3 3PPWG
3” (80 mm) Locking Band Clamp or
Connector Ring IANS03 3PPS-LC 2ZDLC3 3PPLC
3” (80 mm) Wall Strap or Support
Clamp
IASCM03
3PPS-WSM1 (galvanized) or
3PPS-WSM-SS1 (stainless
steel)
2ZDFB3 3PPB
3” (80 mm) Wall Plate IAWP03BP 3PPS-WPB 2ZDWPB3 3PPWTK
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
8

9
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
Table 5 - Approved 2” (60 mm) Flex Polypropylene Components
Description
Centrotherm Eco
Systems, LLC
DuraVent Z-Flex U.S. Inc. ECCO Manufacturing
3” (80 mm) Appliance Vent
Adapter
ISAAL0303 3PPS-03PVCM-2PPF 2ZDCPVCG3 3PPSSAD
3” (80 mm) to 2” (60 mm)
Reducer
ISRD0302 N/A 2ZDR32 302PRED
2” (60 mm) Wall Plate IAWP02BP 2PPS-WPB
Included in Flex
Base Kit 2ZDFBK2 N/A
2” (60 mm) Chimney
Support Elbow or Base
Support or Flex Base Kit
ISBS0287 2PPS-SE90XC 2ZDFBK2 2PPELCS
2” (60 mm) Support Bracket -
Bottom of Chimney or
Chase
Included with
Base Support
ISBS0287
PPS-SUP or
2PPS-SUP (Chimney)
Included in Flex Base
Kit 2ZDFBK2
Included with
Support Elbow
2PPELCS
2” (60 mm) Support
Bracket - Top of Chimney
or Chase
N/A 2PPS-FSB
Included in Flex
Chimney Liner Kit
2ZD2FLK2
2PPFFA
2” (60 mm) Spacer IASP02 2PPS-S
Included in Flex
Chimney Liner Kit
2ZD2FLK2
2PPFS
2” (60 mm) Chimney Cap or
Cover & End Pipe - UV
Resistant or Flex Chimney
Liner Kit
ISCP02 & IFEP02 2PPS-FCTC 2ZD2FLK2 2PPFK
Table 6 - Approved 3” (80 mm) Flex Polypropylene Components
Description
Centrotherm Eco
Systems, LLC
DuraVent Z-Flex U.S. Inc. ECCO Manufacturing
3” (80 mm) Appliance Vent
Adapter ISAAL0303
Not required 2ZDCPVCG3 3PPSSAD
3” (80 mm) Wall Plate IAWP03BP 3PPS-WPB
Included in Flex Base
Kit 2ZDFBK3 N/A
3” (80 mm) Chimney Support
Elbow or Base Support or
Flex Base Kit
ISBS0387 3PPS-SE90XC 2ZDFBK3 3PPELCS
3” (80 mm) Support Bracket -
Bottom of Chimney or Chase
Included with
Base Support
ISBS0387
PPS-SUP or 3PPS-SUP
(Chimney)
Included in Flex Base
Kit 2ZDFBK3
Included with Support
Elbow 3PPELCS
3” (80 mm) Support Bracket -
Top of Chimney or Chase
N/A 3PPS-FSB
Included in Flex
Chimney Liner
Kit 2ZD2FLK3
3PPFFA
3” (80 mm) Spacer IASP03 3PPS-S
Included in Flex
Chimney Liner Kit
2ZD2FLK3
3PPFS
3” (80 mm) Chimney Cap or
Cover & End Pipe - UV
Resistant or Flex Chimney
Liner Kit
ISCP03 & IFEP03 3PPS-FCTC 2ZD2FLK3 3PPFK
CHAPTER 1

INTENTIONALLY LEFT BLANK

CHAPTER 2 - DIRECT VENT INSTALLATION OF VENT/AIR PIPING
11
WARNING
2.1. Direct Vent - Vertical - Through the Roof
or Unused Chimney
NOTICE
• The installation must conform to the
requirements of the authority having
jurisdiction or, in the absence of such
requirements, to the National Fuel Gas Code,
ANSI Z223.1/ NFPA 54, and/or Natural Gas and
Propane Installation Code, CAN/CSA B149.1.
• When using an inoperative chimney as a
means of a chase for the vent, the surrounding
space within the chimney cannot be used to
drawcombustionairorventanotherappliance.
A gas vent extending through a roof must not
terminatenearanadjacentwall orbelowanybuilding
extensions such as roof eaves, balconies or decks.
Failure to comply with the required clearances
in this manual can result in substantial property
damage, serious injury, or death.
NOTICE
The information and diagrams outlining
the fittings and method of terminating the
vent/combustion air are directly related to
PVC/CPVC vent systems. When utilizing an
AL29-4C® Stainless Steel or Polypropylene
vent system, there may be some variations.
Consult the appropriate vent manufacturer for
recommendations and clarifications.
2.1.1 Determine Termination Location
Locate the vent and combustion air termination using
the following guidelines:
1. The total length of the vent or combustion air piping
must not exceed the limits given in Table1on page4.
NOTICE
The 90º elbows used to terminate the
combustion air inlet and vent outlet exterior
of the building have been accounted for in the
maximum allowable vent or combustion air
piping length provided in Table 1.
2. The combustion air piping must terminate in
an upside down “U” shape fashion using two
90° elbows, as shown in Fig. 1 on page 12. The
termination must be located 12” [30.5 cm] (18” [45.7
cm] in Canada) above the highest anticipated snow
level.
3. The vent piping must terminate vertically with a
coupling to accept the bird screen and must be
located 12” to 24” [30.5 cm to 61 cm] above the
combustion air inlet as shown in Fig. 1 on page
12.
4. The vent and combustion air terminations must be
located at a radial distance of 12” to 24” [30.5 cm to 61
cm] from centerline of vent termination to centerline
of air termination as shown in Fig. 1 on page 12.
5. The following should be considered when
determining the location of the vent and
combustion air terminations:
a. Locate the vent termination where flue vapors
will not damage surrounding shrubs, plants, air
conditioning equipment or be objectionable to
the homeowner.
b. The flue products will form a noticeable plume
of water vapor as they condense in colder air.
Avoid terminating the vent in areas where the
plume could obstruct window views.
c. Prevailing winds could cause freezing of flue
gas condensation and a buildup of water / ice
on surrounding plants, building surfaces or
combustion air inlet.
d. Avoid locations where prevailing winds could
affect the performance of the boiler or cause
recirculation of the flue gases, such as inside
corners of buildings, near adjacent buildings,
vertical surfaces, window wells, stairwells,
alcoves, courtyards, or other recessed areas.
e. Do not terminate the vent above doors or
windows, flue condensate could freeze causing
ice formations.
f. Locate the vent termination to prevent possible
condensate damage to exterior finishes.
g. Avoid locations of possible accidental contact
of flue vapors with people or pets.
CHAPTER 2

CHAPTER 2 - DIRECT VENT INSTALLATION OF VENT/AIR PIPING
12
Fig. 1 - Direct Vent - Vertical Termination of Vent and Combustion Air Piping.
6. The vent termination must also maintain the
following clearances, as shown in Fig. 2 on page
13:
a. At least 3 feet [0.9 m] from adjacent walls
b. At least 3 feet [0.9 m] below roof overhangs
c. At least 7 feet [2.1 m] above any public walkways
d. At least 3 feet [0.9 m] above any forced air
intake within 10 feet [3 m] (does not apply
to the combustion air inlet of a direct vent
appliance).
e. No closer than 12”[30.5 cm] below or horizontally
from any door, window or gravity air inlet.
f. Must be at least 4 feet [1.2 m] from any electric
meters, gas meters-regulators, relief valves or
other equipment. Never terminate the vent
above or below any of these items within 4 feet
[1.2 m] horizontally.
g. Aminimum 12 inches [30.5 cm] horizontal spacing
from other fan assisted appliance vents. Never
terminate the vent above or below any fan assisted
vent within 12 inches [30.5 cm] horizontally.
7. Locate the vent and combustion air terminations in a
manner to protect from damage by foreign objects,
such as stones, balls, or buildup of leaves or sediment.
8. Do not connect any other appliance to the vent
pipe or multiple boilers to a common vent pipe.
2.1.2 Direct Vent - Vent Installation - Through
the Roof
1. Vent and Combustion Air Penetration
• Vent pipe penetration through combustible or
non-combustible wall material must maintain a
minimum 1/4” [6 mm] clearance for 3” [7.6 cm]
PVC/CPVC vent or 1”[2.5cm] for 2”[60 mm] PVC/
CPVC vent. The diameter of the penetration hole
must be 4” [102 mm] minimum for 2” [60 mm]
and 3”[80 mm] pipe. When using Polypropylene
or AL29-4C® Stainless Steel Vent refer to vent
manufacturer’s Installation Instructions for
clearances.
• Combustion air pipe penetration can maintain
zero clearance. The diameter of the penetration
hole should be 2-3/8” [6 cm] minimum for 2”
[60 mm] pipe or 3-1/2” [8.9 cm] minimum for 3”
[80 mm] pipe.
2. The installer must use a galvanized metal thimble
for the vent pipe penetration.
3. Locate the vent and combustion air pipe penetrations to
provide clearances as described in Fig.1onpage12.
4. The installer must comply with all local codes for
isolating the vent and combustion air pipes as they
pass through floors, ceilings and roofs.
5. The installer must provide adequate flashing
and sealing boots sized for the vent pipe and
combustion air pipe.
Vent Termination
Combustion Air Termination
CHAPTER 2
12" Min. - 24" Max
[30.5
cm to 61 cm]
Above
Combustion
Air Inlet