Desa Tech CGR65PA, CGR65BPA, CGR35PA, CGR50BPA, CGR50PA Combustion, Ventilation Air from Outdoors

AIR FOR

Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re-

COMBUSTION

leases poisonous carbon monoxide gas into your home.

WARNING ICONG 001 DANGER

AND

Carbon monoxide poisoning may lead to death!

VENTILATION

If draft hood spillage occurs, check for blocked flue connectors, vent pipes, and

Continued

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

Outlet

Ventilated

Attic

Air

Outlet

Air

To Attic

To

Crawl

Inlet

Space

Air

Inlet Air

Ventilated

Crawl Space

Continued

Figure 15 - Ventilation Air from Outdoors

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