Desa CGP20L, RP30D AIR for Combustion Ventilation, Ventilation Air From Outdoors

OWNER’S MANUAL

AIR FOR COMBUSTION

AND VENTILATION

Continued

Ventilation
Grills	Or
into Adjoining	Remove
Room,	Door into
Option 1	Adjoining
	Room,
	Option 3

12"

Ventilation Grills

Into Adjoining Room,

Option 2

12"

Figure 2 - Ventilation Air from Inside Building

Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-
manent openings: one within 12" of the
ceiling and one within 12" of the floor.	Outlet
Connect these items directly to the outdoors
	Air
or spaces open to the outdoors. These spaces
include attics and crawl spaces. Follow the
National Fuel Gas Code NFPA 54/ANSI
Z223.1, Section 5.3, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.	Inlet
IMPORTANT: Do not provide openings
	Air
for inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated
air entering the attic will activate the power
vent.

Ventilated

Outlet Attic

Air

To Attic

To

Crawl

Space

Inlet Air	Ventilated
	Crawl Space

Figure 3 - Ventilation Air from Outdoors

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