7 Vent Information and Diagrams
A. Vent Guidelines
WARNING! Fire Risk/Asphyxiation! This appliance re- quires the specified pipe for operation. Incorrect pipe may cause spillage, condensation and overheating.
These models require the 5 in. (127 mm)
•This system MUST terminate vertically.
•Follow pipe manufacturer’s installation guidelines when installing the appliance.
WARNING! Fire Risk/Explosion/Asphyxiation! DO NOT connect this gas appliance to a chimney flue serving a separate
•Vent this appliance directly outside.
•Use separate vent system for this appliance.
May impair safe operation of this appliance or other appliances connected to the flue.
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| Minimum |
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| clearances are |
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| per vent |
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| manufacturer's |
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| specifications |
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| Metal |
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| plumber's strap |
12 ft (3.66 m) min. |
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| secured to | ||||
60 ft (18.29 m) max. |
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| Vent supports are per | ||
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| vent manufacturer's | ||
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| specifications |
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Figure 7.1 Vertical Termination Clearances
B. Vent System Configuration
CAUTION! Risk of Fire! ALL vent configuration specifi- cations MUST be followed. This product is tested and listed to these specifications. Appliance performance will suffer if specifications are not followed.
Rise to Run Ratio = 2:1
Maximum Total Horizontal Run = 30 Feet Minimum Total Vertical Rise = 12 Feet Maximum Total Vertical Rise = 60 Feet Maximum Number of Elbows: Four 90º or Eight 45º
WARNING! Risk of Fire or Explosion! Insulation and other combustibles must not infringe on clearances.
Vent supports |
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are per vent | Metal |
manufacturer’s | |
specifications. | Plumbers' |
| Strap |
Maximum horizontal run is 50% of | |
vertical. Horizontal run cannot be | |
more than 30 ft. (9.14 m). | |
Figure 7.2 Maximum Horizontal Run | |
•ALWAYS maintain specified clearances around venting and firestop systems.
•Install firestops as specified.
Failure to keep insulation or other material away from vent pipe may cause fire.
Maximum horizontal 30 ft (9.14 m)
45° | Offsets exceeding |
Elbow | |
| 45° adapt horizontal |
90° | limitations |
Elbow |
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| Note: Maximum horizontal |
| distance is 50% of vertical |
| vent height. |
Figure 7.3 Maximum Horizontal Run
22 | Heatilator • Caliber Mesh BV Series • |