Manuals / Desa / Household Appliance / Electric Heater

Desa CGB35N, CGB50N installation manual Fresh Air For Combustion And Ventilation, Danger, Continued

Models: CGB50N CGB35N

1 40
Download 40 pages 49.28 Kb
Page 18
Image 18
Figure 14 - Ventilation Air from Outdoors

FRESH AIR FOR COMBUSTION AND VENTILATION

Continued

18

Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re- leases poisonous carbon monoxide gas into your home.

Manual background DANGER

Carbon monoxide poisoning may lead to death!

If draft hood spillage occurs, check for blocked flue connectors, vent pipes, and chimneys. If you find blockage, remove. Test again for spillage. If spillage still occurs or there was no blockage, you need more fresh, outside air in the house. You must provide additional fresh-air ventilation. Follow the steps below at once.

A.Open a window near the appliance(s) at least two inches. Test again for spillage. If spillage does not stop, open window more and retest. If spillage stops, keep window open while running appliance(s). Supply fresh, outside air by a permanent method as soon as possible. If spillage still occurs, leave window open and go to next step.

B.If you have a fireplace, open a window or door near it at least two inches. Test again for spillage. If spillage does not stop, open window or door more and retest. If spillage stops, keep window or door open while using fire- place. Supply fresh, outside air by a permanent method as soon as possible. If spillage still occurs, leave window or door open and go to next step.

C.If you have kitchen and bathroom exhaust fans, turn them off. Test again for spillage. If spillage stops, do not use exhaust fans. Turn off circuit breakers for fans if possible. Permanently supply fresh, outside air as soon as possible.

Providing Permanent Fresh-Air Ventilation

If draft hood spillage occurs, you must permanently supply fresh, outside air to the inside of your house. Provide extra fresh air by using ventilation grills or ducts. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. If you install this heater in an area with other gas appliances, you must total the BTU/Hr input rating of all appliances. Follow the National Fuel Gas Code NFPA 54/ANSI Z223.1. It lists fresh-air requirements for fuel-burning appliances.

IMPORTANT

Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent.

Chimney

 

or Gas

 

Vent

Ventilated

Outlet

Attic

Air

 

Outlet

 

Air

To Attic

 

To

Crawl

Space

Inlet

Air

Inlet Air

 

Ventilated

 

 

Crawl Space

 

 

Figure 14 - Ventilation Air from Outdoors

100351

Page 17 Page 19
Page 18
Image 18
Desa CGB35N Fresh Air For Combustion And Ventilation, Danger, Continued, Carbon monoxide poisoning may lead to death
Page 17 Page 19

FAQ

What is draft hood spillage?

Draft hood spillage is a hazardous situation where poisonous carbon monoxide gas is released into your home. It can lead to death. If it occurs, check for blocked flue connectors, vent pipes, and chimneys, and take immediate action to provide additional fresh-air ventilation.

How do I provide permanent fresh-air ventilation?

In case of draft hood spillage, you must permanently supply fresh, outside air to the inside of your house. This can be achieved by using ventilation grills or ducts connected directly to the outdoors or spaces open to the outdoors, such as attics and crawl spaces.

What are the fresh-air requirements for fuel-burning appliances?

The National Fuel Gas Code NFPA 54/ANSI Z223.1 lists fresh-air requirements for fuel-burning appliances. It is important to follow these guidelines if you have other gas appliances in the same area.