24 Direct-Fired Make-up Air • MUA-SVX01A-EN
Weights and Clearances
DFOA Only
Note 3. When a mixing box option is ordered, the Inlet Damper, V-Bank Filter and Return Air accessory weights,
must be totaled.
Note 4. 2 Contact the factory for shipping weights on models exceeding 50,000 CFM.
Service Clearance
• A three-foot clearance is required on all sides for single and dual fan units
(sizes 215-230). Refer to Table 4 for minimum combustable clearances.
• To permit blower shaft replacement, the side opposite of the controls should
have a clearance equal to the width of the unit.
Figure 5. Plan View DFOA Unit
Table 3. DFOA Weights in pounds (approximate)
Unit
Size
Blower
Section
Vertical
Support
Stand
Inlet
Hood
Inlet
Damper
V-
Bank
Filter
Burner
Section
Return
Air
Discharg
e Louver A B C D
109 350 180 140 55 165 260 104 70 67 149 67 67
112 350 180 140 55 165 260 104 70 67 149 67 67
115 535 210 150 70 185 375 116 80 94 253 94 94
118 535 210 150 70 185 375 116 80 94 253 94 94
120 916 420 183 120 275 550 151 110 159 439 159 159
122 916 420 183 120 275 550 151 110 159 439 159 159
125 1262 570 216 155 310 700 208 125 224 590 224 224
130 1262 570 216 155 310 700 208 125 224 590 224 224
215 912 500 224 125 275 510 141 150 158 438 158 158
218 912 500 224 125 275 510 141 150 158 438 158 158
220 1501 625 290 233 410 725 226 215 268 697 268 268
222 1501 625 290 233 410 725 226 215 268 697 268 268
225 2117 845 350 340 500 1010 302 230 388 953 388 388
230 2117 845 350 340 500 1010 302 230 388 953 388 388
Unit
Discharge
Damper
V-Bank Filter
Inlet Damper
Inlet Hood
Discharge
Louver
B
C
A
D
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