Raypak 1005 Vent Terminal Location

TableL: Venting Category Requirements

Vent Terminal Location

1. Condensate can freeze on the vent cap. Frozen

condensateon the vent cap can result in a blocked

flue condition.

2. Give special attention to the location of the vent

termination to avoid possibility of property dam-

age or personal injury.

3. Gases may form a white vapor plume in winter.

The plume could obstruct a window view if the ter-

mination is installed near windows.

4. Prevailing winds, in combination with below-freez-

ing temperatures, can cause freezing of

condensate and water/ice build-up on buildings,

plants or roofs.

5. The bottom of the vent terminal and the air intake

shallbe located at least 12 in. above grade, includ-

ing normal snow line.

6. Un-insulated single-wall Category IV metal vent

pipeshall not be used outdoors in cold climates for

venting gas-fired equipment without insulation.

7. Through-the-wall vents for Category IV appli-

ances shall not terminate over public walkways or

over an area where condensate or vapor could

create a nuisance or hazard or could be detrimen-

tal to the operation of regulators, relief valves, or

other equipment.

8. Locate and guard vent termination to prevent acci-

dental contact by people or pets.

9. DO NOT terminate vent in window well, stairwell,

alcove, courtyard or other recessed area.

10. DO NOT terminate above any door, window, or

gravity air intake. Condensate can freeze, causing

ice formations.

11. Locate or guard vent to prevent condensate from

damaging exterior finishes. Use a rust-resistant

sheet metal backing plate against brick or mason-

ry surfaces.

12. DO NOT extend exposed vent pipe outside of

building beyond the minimum distance required

for the vent termination. Condensate could freeze

and block vent pipe.

U.S. Installations

Refer to the latest edition of the National Fuel Gas

Code.

Vent termination requirements are as follows:

1. Ventmust terminate at least 4 ft below or 4 ft hori-

zontally from any door, window or gravity air inlet

to the building.

2. The vent must not be less than 7 ft above grade

when located adjacent to public walkways.

3. Terminate vent at least 3 ft above any forced air

inlet located within 10 ft.

4. Vent must terminate at least 4 ft horizontally,and

in no case above or below unless 4 ft horizontal

distance is maintained, from electric meters, gas

meters, regulators, and relief equipment.

NOTE: During winter months check the vent cap

and make sure no blockage occurs from build-up of

snow or ice.

from combustible materials. Use insulated vent pipe

spacers where the vent passes through combustible

roofs and walls.

Combustion

Air Supply

Exhaust

Configuration

Heater Venting