Vertical Vent Termination Clearances And Location - A.O. Smith 400 - 2100 Installation & Operation Manual

Genesis water heater

Table of Contents

Venting

4. Turn on clothes dryers and any other appliances not connected to the common venting system. Turn on any exhaust fans, such

as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan.

5. Close fireplace dampers.

6. Place in operation the unit being inspected. Follow the lighting instructions. Adjust thermostat so unit will operate continuously.

7. Test for spillage at the draft hood/relief opening after 5 minutes of main burner operation. Use the flame of a match or candle,

or smoke from a cigarette, cigar or pipe.

8. After making sure that each appliance remaining connected to the common venting system properly vents when tested as above,

return doors, windows, exhaust fans, fireplace dampers and other gas burning appliances to their previous conditions of use.

9. Correct any improper operation of the common venting system so that the installation conforms to the latest edition of the

National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CAN/CGA-B149 Installation Code for Gas Burning

Appliances and Equipment. When resizing any portion of the common venting system, resize to approach the minimum size as

determined using the appropriate tables of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest

edition of CAN/CGA-B149 Installation Code for Gas Burning Appliances and Equipment.

Masonry chimney installations

A masonry chimney must be properly sized for the installation of a high efficiency gas-fired appliance. Venting of a high efficiency

appliance into a cold or oversized masonry chimney can result in operational and safety problems. Exterior masonry chimneys,

with one or more sides exposed to cold outdoor temperatures, are more likely to have venting problems. The temperature of the

flue products from a high efficiency appliance may not be able to sufficiently heat the masonry structure of the chimney to generate

proper draft. This will result in condensing of flue products, damage to the masonry flue/tile, insufficient draft and possible spillage

of flue products into an occupied living space. Carefully inspect all chimney systems before installation.

Do not vent this unit into a masonry chimney without a sealed stainless steel liner system. Any breaks, leaks,

WARNING

or damage to the masonry flue/tile will allow the flue products to leak from the chimney and into occupied

living spaces. This could cause serious injury or death due to carbon monoxide poisoning and other harmful

flue products.

Check with local code officials to determine code requirements or the advisability of using a masonry chimney

NOTICE

with a sealed corrosion-resistant liner system.

Inspection of a masonry chimney

A masonry chimney must be carefully inspected to determine its suitability for the venting of flue products. A clay-tile-lined

chimney must be structurally sound, straight and free of misaligned tile, gaps between liner sections, missing sections of liner or any

signs of condensate drainage at the breaching or clean out. If there is any doubt about the condition of a masonry chimney, it must

be relined with a properly-sized and approved chimney liner system. An unlined masonry chimney must not be used to vent flue

products from this high-efficiency unit. An unlined chimney must be relined with an approved chimney liner system when a new

appliance is being attached to it. Metallic liner systems (Type-B double-wall or flexible or rigid metallic liners) are recommended.

Consult with local code officials to determine code requirements or the advisability of using or relining a masonry chimney.