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DAKA Furnace Model 621
November 2009 Edition
Revision 2: 7-20-12
FIG. 1
– Typical Installation As Supplementary “Add-On” Furnace
NOTE: Supply plenum must be metal.
EXAMPLE
FIG. 2
– Typical Independent Central Furnace Installation
NOTE: Supply plenum must be metal.
EXAMPLE
6” Minimum Listed Type HT
Chimney serving DAKA
Furnace Only
Minimum 12” Round Cold
Air Return Pipe Connected
To Filter Box Inlet
Primary Furnace
(natural gas, electric, oil)
Location of Fixed
Back Draft Damper to
be installed on
Primary Furnace
90° Elbows installed
inside plenum
(See FIG. 5 for alternatives)
Primary Furnace
Warm Air Plenum
Cold Air
Return
Barometric Regulator
Twin 8” round
warm air outlet
pipes
