Instructions / Assembly

27
• Provide two permanent openings to allow circulation of combustion air.
• A minimum free area of each openings
Installation Unit BTUH
Indoor make up
air is provided
Outdoor make up air is provided
Direct or
Vertical ducts
Horizontal ducts
EZ111DV (GQ-C3259WX-FF US) 199.9 kbtuh
200 in
2
20" (W) x 10" (H)
50 in
2
10" (W) x 5" (H)
100 in
2
20" (W) x 5" (H)
EZ98DV (GQ-C2859WX-FF US)
180 kbtuh
180 in
2
20" (W) x 9" (H)
45 in
2
10" (W) x 4 1/2" (H)
90 in
2
20" (W) x 4 1/2" (H)
Supply combustion air to the units as per the National Fuel Gas Code, ANSI
Z223.1-
latest edition and in Canada, in accordance with the Natural Gas and Propane
Installation
Code CSA B149.1-latest edition.
Combustion Air
Openings supplying indoor air
H
H
W
W
Provide adequate combustion air so as to not create negative pressure within the building.
• If the unit is installed in a mechanical closet, a minimum of permanent clearance of 4" or more
in front of the unit is required. A 24" or more clearance is recommended in order to facilitate
maintenance and repair.
• If combustion air will be provided through a duct, size the duct to provide as below.
EZ111DV (GQ-C3259WX-FF US) : 70 cubic feet of fresh air per minute
EZ98DV (GQ-C2859WX-FF US) : 63 cubic feet of fresh air per minute
• If the unit is installed in a mobile home, outdoor air must be supplied.
The usage of the Flex Vent 2" Conversion Kit (EZ2-CK) is prohibited.