34 Direct-Fired Make-up Air • MUA-SVX01A-EN
Installation
Note 13. Curb to be shipped loose and assembled in the field.
Curb must be square and level.
Curb requires intermediate structural support and is not to be corner post mounted.
Gaskets to be shipped with unit.
Bolting accessories shipped with curb.
Curb drawings shown are for units which have controls on the "standard" side.
Figure 14. DFOA Roof Curb (Models 109-118) Return Air Downstream of Burner
Table 5. DFOA Roof Curb (Models 109-118)
Model Dimensions (feet/inches)
A B C D E
109 10 3/8 "1’ - 3/8 "11 15/16 "11 3/4 "1’ - 10 13/16"
112 1’ - 1 9/16 "10 13/16 "1’ - 3 15/16 "9 7/8 "1’ - 8 7/8"
115 1’ - 4 "9 5/8 "1’ - 6 15/16 "8 3/8 "1’ - 7 3/8"
118 1’ - 7 "9 5/8 "1’ - 10 1/16 "5 1/8 "1’ - 7 3/8"
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