2
GENERAL
CORR/GUARD VENTING SYSTEM INSTALLATION
INSTRUCTIONS
Corr/Guard is a special stainless steel venting system for gas-fired
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 qualified 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 fire
officials 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 specifically mentioned herein, contact
building or fire officials 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 specified 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 fitting must be
located as close as possible to the appliance flue outlet. Unless a
drain fitting 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
specifically 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 fire resistance rating equal to or greater than that of the
floor 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 flue 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.
