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INSTALLATION
EXHAUST STACK IS DOWNWIND
OF AIR INTAKE OPENING
COMBUSTION AIR INTAKE
TERMINATION 90° ELBOW
1/2 INCH x 1/2 INCH
(13 MM x 13 MM)
MESH SCREEN
IF SNOW ACCUMULATION
IS APPLICABLE, OPENING TO BE
MIN 1 FT (30 CM ) ABOVE
THIS NORMALLY EXPECTED LEVEL.
SCH40 PVC PIPE (TYPICAL)
REFERENCE TABLE 1 FOR
MINlMUM DIAMETER
COMBUSTION AIR INTAKE (CAI)
DIRECTION OF FLOW
AIR INTAKE RUBBER COUPLING
(INCREASER REQUIRED FOR 650/750)
LEVEL HOUSEKEEPING PAD
2-28
FLUE GAS EXHAUST TERMINATION
(RAIN CAP NOT RECOMMENDED)
MIN 4 FT (122 CM)
DOWNWIND OF INTAKE
TERMINATION (SEE CAUTION)
MIN 4 FT (122 CM)
ABOVE INTAKE
TERMINATION
(SEE CAUTION)
METAL PLATE
FIRE STOP
APPLIANCE ADAPTER
CONSULT FLUE MFG
FOR SELECTION
FIGURE 14 - ROOF PENETRATION DETAILS
CAUTION:
SEPARATE AIR INTAKE AND EXHAUST TERMINATIONS AS FAR AS
POSSIBLE TO PREVENT FLUE GAS RECIRCULATION (FGR) DURING
DIFFERENT CONDITIONS. PROVIDING SEPARATION GREATER
THAN MINIMUM DISTANCES IS STRONGLY RECOMMENDED.
STORM COLLAR
(FOR DOUBLE WALL)
TYPICAL ROOF PENETRATIONS
COMBUSTION AIR FROM THE OUTDOORS
( SUGGESTED INSTALLATION CONFIGURATIONS )
NOTES:
1) HORIZONTAL SECTIONS MUST ADHERE TO A MINIMUM
1/4 INCH PER FOOT (1 MM PER 48 MM) RISE TO RUN RATIO
2) MAINTAIN A MINIMUM 9 INCH (229 MM) AIR SPACE
CLEARANCE TO COMBUSTABLES, WIRE, AND INSULATION
3) INSTALL SUPPORT STRAPS AT 5 FT (152 CM) HORIZONTAL
INTERVALS AND AT ELBOWS
STORM COLLAR
WITH ADHESIVE SEAL
ADJUSTABLE
FLASHING
DO NOT PLACE INSULATION IN
REQUIRED AIR SPACE CLEARANCE
FLUE GAS EXHAUST
DIRECTION OF FLOW
UL-1738 LISTED AND LABELED
SPECIAL GAS VENT
SECTION 2
EXE-IOM-230112
© Fulton Group N.A., Inc. 2023
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