Metal Fab AL29-4C Installation Manual
CORR/GUARD
INSTALLATION INSTRUCTIONS
This symbol on the nameplate
means this product is listed by
Underwriters Laboratories Inc.
Tested to UL1738 / CAN / ULCS636-08
Listing No. MH26687
Testing No. 11EN
SMALL DIAMETER CORR/GUARD
& SLEEVED CORR/GUARD
PRESSURE RATED VENTING SYSTEM
AL29-4C® STAINLESS STEEL
CONDENSING APPLIANCES
CAT. II, III, IV APPLIANCES
FUME EXHAUST
3”(76mm) - 36”(914mm) DIAMETERS
C US
IMPORTANT: DO NOT INSTALL WITHOUT FIRST READING THESE INSTRUCTIONS
VERY CAREFULLY.
• EXAMINE ALL COMPONENTS FOR POSSIBLE SHIPPING DAMAGE
BEFORE INSTALLATION.
• PROPER JOINT ASSEMBLY IS ESSENTIAL FOR A SAFE INSTALLATION.
FOLLOW THESE INSTRUCTIONS EXACTLY AS WRITTEN. CHECK
SEVERENESS OF JOINTS UPON COMPLETION OF ASSEMBLY.
• THIS VENTING SYSTEM MUST BE FREE TO EXPAND AND CONTRACT.
SUPPORT SYSTEM IN ACCORDANCE WITH THESE INSTRUCTIONS.
CHECK FOR UNRESTRICTED MOVEMENT THROUGH WALLS, CEILINGS,
AND ROOF PENETRATIONS. DIFFERENT MANUFACTURERS HAVE
DIFFERENT JOINT SYSTEMS AND ADHESIVES. DO NOT MIX PIPE,
FITTINGS, OR JOINING METHODS FROM DIFFERENT MANUFACTURERS.
METAL-FAB, INC. P.O. BOX 1138, WICHITA, KS 67201-1138
2
GENERAL
CORR/GUARD VENTING SYSTEM INSTALLATION
INSTRUCTIONS
Corr/Guard is a special stainless steel venting system for gas-red
appliances listed as Cat. II, III & IV or in Canada, Type BH Gas Venting
Systems per ULC-636, with rated operating temperature of 550° F (287°
C). Corr/Guard is rated for positive pressure of 15” (381mm) w.c. for
3” (76mm) diameter through 36” (914mm) diameter. Metal-Fab, Inc.
recommends the system be inspected once a year by a qualied service
technician.
Venting system design may be limited by appliance performance.
Consult appliance installation instructions to determine proper sizing
and limitations such as maximum horizontal length and height,
maximum number of elbows or offsets, connecting two or more
appliances to a common venting system, and other limitations that
may affect design and installation. Permits may be required before
starting an installation. Installation is to be in accordance with local
building code requirements and National Codes: USA – NFPA 54
ANSI-Z223.1 or NFPA 211. In Canada – CAN/CGA-B149.1 or
CAN/CGA-B149.2 Propane Installation Code as applicable. It is
the responsibility of the installer to contact local building and re
ofcials concerning any installation restrictions and/or inspection
requirements that may apply.
Corr/Guard is to be installed in accordance with these installation
instructions and those of the appliance manufacturer. For conditions
and applicable restrictions not specically mentioned herein, contact
building or re ofcials having jurisdiction in your area. The following is a
guide to assist a professional installer:
• Proper operation of the venting system and appliance is dependant
on the use of all parts specied by Metal-Fab for use in the particular
installation. System performance may be affected if the proper
assembly of all required parts is not accomplished.
• Refer to appliance’s instructions to determine proper sizing and
connection of the venting system to the appliance.
• Corr/Guard Model CG, FCS, FCS-1 & FCS-2 double wall vent may
be used with Model CGSW & FCSSW single wall vent within the
same vent system.
• Tee sections should only be used in conjunction with a drain on
appliances tested for use with a drain, or if allowed by the appliance
manufacturer for multiple appliance connections.
• If required by the appliance manufacturer, a drain tting must be
located as close as possible to the appliance ue outlet. Unless a
drain tting is supplied with the appliance, install only a Corr/Guard
Drain Fitting.
• More than one Category II, III or IV appliance may not be connected
into the same vent system, unless the appliance manufacturer
specically approved such a system and the appliances are
designed for multiple venting. Cat. II, III or IV appliances MAY NOT
share any part of their vent system with a natural draft appliance.
• Check the joints and seams for gas tightness when using the
venting system with a Cat. III or Cat. IV appliance.
• Except for installation in one and two family dwellings, a venting
system that extends through any zone above that on which the
connected appliance is located shall be provided with an enclosure
having a re resistance rating equal to or greater than that of the
oor or roof assemblies through which it passes.
• Corr/Guard shall not be routed into, through, or within any other
vent, such as an existing masonry or factory-built chimney ue that
is connected to another appliance.
• WARNING! Do not place or install insulation in any required
clearance spaces surrounding the venting system.
• Enclosure of exterior mounted venting systems below the roof line
is recommended to limit condensation and protect from mechanical
damage.
When the Corr/Guard vent system is installed, check joints for tightness.
Repair any joint leaks by disassembling and resealing following the
guidelines in the Joint Assembly section of these instructions. Replace
any defective component.
(TABLE 1) CLEARANCE TO COMBUSTIBLES
Corr/Guard SINGLE WALL (CGSW & FCSSW)
Rated Operating Minimum Clearance Minimum Clearance
Temperatures Enclosed Unenclosed
Pipe Dia. Temp. Horiz. Vert. Horiz. Vert.
Single Wall
3”&4”
(76mm - 102mm)
(CGSW)
400°F
(204°C)
480°F
(249°C)
550°F
(288°C)
8”
(203mm)
8”
(203mm)
N/A
4”
(102mm)
4”
(102mm)
N/A
1”
(25mm)
2”
(51mm)
2”
(51mm)
1”
(25mm)
2”
(51mm)
2”
(51mm)
Single Wall
5”
(127mm)
(CGSW)
400°F
(204°C)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
6”
(152mm)
6”
(152mm)
N/A
1”
(25mm)
2”
(51mm)
2”
(51mm)
1”
(25mm)
2”
(51mm)
2”
(51mm)
Single Wall
6”-12”
(152mm - 305mm)
(FCSSW)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
N/A
2”
(51mm)
2”
(51mm)
2”
(51mm)
2”
(51mm)
Single Wall
14”-18”
(356mm - 457mm)
(FCSSW)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
N/A
3”
(76mm)
3”
(76mm)
3”
(76mm)
3”
(76mm)
Single Wall
20”-24”
(508mm - 610mm)
(FCSSW)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
N/A
4”
(102mm)
4”
(102mm)
4”
(102mm)
4”
(102mm)
Single Wall
26”-30”
(660mm - 762mm)
(FCSSW)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
N/A
5”
(127mm)
5”
(127mm)
5”
(127mm)
5”
(127mm)
Single Wall
32”-36”
(813mm - 914mm)
(FCSSW)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
N/A
N/A
6”
(152mm)
6”
(152mm)
6”
(152mm)
6”
(152mm)
(TABLE1) CLEARANCE TO COMBUSTIBLES
Corr/Guard DOUBLE WALL (CG, FCS, FCS-1 & FCS-2)
Rated Operating Minimum Clearance Minimum Clearance
Temperatures Enclosed Unenclosed
Pipe Dia. Temp. Horiz. Vert. Horiz. Vert.
Double Wall
3”-5”
(76mm - 127mm)
(CG)
300°F
(149°C)
480°F
(249°C)
550°F
(288°C)
3”
(76mm)
6”
(152mm)
N/A
1”
(25mm)
1”
(25mm)
N/A
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
Double Wall 6”-12”
(152mm - 305mm)
(FCS/FCS-1/FCS-2)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
Double Wall 14”-18”
(356mm - 457mm)
(FCS/FCS-1/FCS-2)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
1”
(25mm)
1”
(25mm)
2”
(51mm)
2”
(51mm)
1”
(25mm)
1”
(51mm)
Double Wall 20”-24”
(508mm - 610mm)
(FCS/FCS-1/FCS-2)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
1”
(25mm)
1”
(25mm)
3”
(76mm)
3”
(76mm)
1”
(25mm)
1”
(76mm)
Double Wall 26”-30”
(660mm - 762mm)
(FCS/FCS-1/FCS-2)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
2”
(51mm)
2”
(51mm)
4”
(102mm)
4”
(102mm)
2”
(51mm)
2”
(51mm)
Double Wall 32”-36”
(813mm - 914mm)
(FCS/FCS-1/FCS-2)
480°F
(249°C)
550°F
(288°C)
N/A
N/A
2”
(51mm)
2”
(51mm)
5”
(127mm)
5”
(127mm)
2”
(51mm)
2”
(51mm)
The Corr/Guard ventilation system, manufactured by Metal-Fab, Inc.
is constructed to exacting standards. The proper operation of this vent
system is dependant on the use of correct components, proper sizing,
quality of installation, and guidelines and limitations expressed by the
appliance manufacturer.
3
USE AND INSTALLATION OF INDIVIDUAL PARTS:
These instructions comprise both general and specific requirements for
all parts in the product line. Before specifying a design or beginning an
installation, these instructions should be carefully reviewed.
PIPE WEIGHT
The average weight of the chimney, per foot of length, can be calculated
using the following formula.
FCSSW (6”-24”): 0.30 x diameter = lbs per foot
FCS (6”-24”): 0.70 x diameter = lbs per foot
FCS-1 (6”-24”): 0.85 x diameter = lbs per foot
FCS-2 (6”-24”): 0.95 x diameter = lbs per foot
FCSSW (26”-36”): 0.40 x diameter = lbs per foot
FCS (26”-36”): 0.80 x diameter = lbs per foot
FCS-1 (26”-36”): 0.95 x diameter = lbs per foot
FCS-2 (26”-36”): 1.05 x diameter = lbs per foot
Example: 8FCS-1: 0.85 x 8 = 6.80 lbs per foot
Vent design should make provisions for support adequate to ensure that
vent components are not overloaded.
PART NUMBERS
These instructions identify Model FCS, FCS-1 & FCS-2 parts by name
of part number in the text and illustrations. Actual parts also carry a flue
diameter prefix and a three digit “CTO” suffix which defines the materials
of construction, such as 8FCS24-CA1 for an 8-inch diameter double wall
pipe section 24 inches long with AL29-4C stainless steel inner flue wall,
aluminized steel outer casing wall and 1” insulation. (See TABLE 2 for
further explanations of CTO codes).
TABLE 2
1ST DIGIT 2ND DIGIT 3RD DIGIT
(INNER WALL) (OUTER WALL) (INSULATION)
C = AL29-4C A = ALUMINIZED STEEL 0 = AIR SPACE
4 = 304 S/S 1 = 1” INSULATION
6 = 316 S/S 2 = 2” INSULATION
JOINT ASSEMBLY-SINGLE WALL
3”- 5” (76mm - 127mm) DIAMETER CGSW
Each Corr/Guard vent component contains a seal gasket on the
female end of the vent joint and locking tabs. Mechanical fastening
of the joint is automatic and requires no tools. Visually check the
gasket for proper location within the pipe bead during assembly or ue
gases could leak, resulting in carbon monoxide poisoning. Assembly
of joints is shown below:
NOTE: When assembling 3”-5” Diameter Corr/Guard vent, always install
the the female ue end elevated above the male ue end.The “UP” arrow
will point to the elevated female ue end. Change of directions are made
by using a male to male or female to female adapter depending on the
ow of the condensate.
1. Insert the male end of the vent pipe into the adjoining
female vent section until the bead of the male joint stops
at the edge of the female joint.
NOTE: If the seal gasket pushes out of the groove during the
assembly process, apply a light lm of synthetic based lubricant to
the top surface of the gasket or spray a light lm of soapy water on
the top surface of the gasket. Visually check that the gasket has not
pushed out of the ue bead.
2. When properly inserted to the fullest extent, the integral locking tabs
will snap into place, securing the joint Before proceeding, verify
that all locking tabs are engaged for each joint assembly.
JOINT ASSEMBLY-DOUBLE WALL
3”- 5” (76mm - 127mm) DIAMETER CG
Connections between vent and ttings are male/female type. The inner
duct is sealed with an integral seal gasket and the joint is mechanically
secured via the overlapping outer wall of the double wall pipe.
NOTE: When assembling 3”-5” Diameter Corr/Guard vent, always install
the the female ue end elevated above the male ue end. The “UP”
arrow will point to the elevated female ue end. Change of directions are
made by using a male to male or female to female adapter depending on
the ow of the condensate.
Joints are assembled per the following steps:
1. Before assembly, observe that the seal gasket is located within the
female inner pipe joint. Locate next pipe or tting with male inner
pipe joint and insert to begin engagement of inner pipe joint.
NOTE: If the seal gasket pushes out of the groove during the
assembly process, apply a light lm of synthetic based lubricant to
the top surface of the gasket or spray a light lm of soapy water on
the top surface of the gasket. Visually check that the gasket has not
pushed out of the ue bead.
2. As the joint further engages, align the male and female ends of the
outer wall of each pipe so that they begin to engage as the pipes are
further pushed together.
3. Pipe joint is fully engaged when the female end of the outer pipe
comes in contact (or is at least within 3/16” 5mm) to the base of the
bead on the male end of the adjoining vent pipe.
4. When possible look within the pipe assembly to verify that no sign
of seal gasket is showing. Complete the joint assembly by
securing the joint using #8 x 1/2” sheet metal screws (3 per joint)
at each pre-punched hole on the female end of each joint.
WARNING: SHEET METAL SCREWS ARE FOR DOUBLE WALL
OUTER CASING ONLY. NEVER USE SCREWS, RIVETS OR OTHER
FASTENERS TO PENETRATE THE INNER FLUE WALL.
1
4
2
3
FIG. 2
SEAL
GASKET
3/16” GAP (MAX.)
INSERT MALE END UNTIL THE END OF THE
FEMALE PROFILE MAKES CONTACT WITH
THE MALE PROFILE BEAD.
FIG. 1
VERIFY THAT TABS “SNAP”
INTO LOCKING POSITION.
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