Dayton Heavy-Duty Belt-Drive Exhaust and Supply Fans - Operating Instructions & Parts Manual

Oct 24, 2026

Operating instructions and parts manual for Dayton heavy-duty belt-drive exhaust and supply fans, including models 1AHA8, 1AHA9, 1AHB1–1AHB5, and supply fan 3FKD6. Provides safety guidance for assembly, installation, operation, and maintenance, and describes fan design features such as heavy-duty drive frame channels, six-blade cast aluminum propellers, regreasable pillow block bearings, and mounting orientation. Includes optional accessories, electrical disconnect switch models, and certified rating information, plus performance, airflow, sound ratings, and dimension specifications to support correct selection and installation.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages10

Reading Time25 min

AccessFree to download

Operating Instructions

Safety information

Description and applications

Optional accessories

Dimensions and specifications

Performance and sound ratings

Airflow figures

Operating Instructions & Parts Manual 1AHA8, 1AHA9, 1AHB1 thru 1AHB5, and 3FKD6 Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage! Retain instructions for future reference. Dayton® Heavy Duty Belt-Drive Exhaust and Supply Fans Description Dayton exhaust and supply fans are designed for commercial and industrial applications requiring high volume of air at low to medium static pressures. Construction includes heavy-duty drive frame channels, bearing plate and motor plate. The propeller utilizes a six-blade heavy-duty cast aluminum design. Heavyduty ball bearings are regreasable cast pillow block and rated for L10 – 100,000 hours. Mount in vertical position for exhaust applications, or horizontal position for supply applications. All exhaust fans are UL/cUL listed standard 705. Optional Accessories General or UL 705 Description Model No.’s NEMA 1 Dis. Switch: 1H400 (2 pole, 115/230V, 2HP max) 1H401 (3 pole, 230V, 71/2 HP max) 1H401 (3 pole, 460V, 10HP max) NEMA 4 Dis. Switch: 1H408 (2 pole, 115/230V, 2HP max) 1H409 (3 pole, 230V, 71/2 HP max) 1H409 (3 pole, 460V, 10HP max) SOUND and AIR PERFORMANCE AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL, INC.® Dayton Electric Mfg. Co. certifies that the ventilators shown herein are licensed to bear the AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program. Optional Accessories (Continued) |
Model
Prop. Dia.
Shutter Motor No.
Galvanized Wall Shutter No.
Aluminum Wall Shutter No.
Fiberglass Wall Shutter No.
Wall Housing No.
Fan Guard No.
Wall Collar No.
Weather Hood
No.
EXHAUST FANS | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1AHA8 | 24" | 2C831 | 1C746 | 3C308 | 5C215 | 3FKF8 | 1WBU3 | 1WBV1 | 1WBV9 | | 1AHA9 | 30 | 2C831 | 1C055 | 3C309 | 5C216 | 3FKF9 | 1WBU4 | 1WBV2 | 1WBW1 | | 1AHB1 | 36 | 2C831 | 4C521 | 3C310 | 5C217 | 3FKG1 | 1WBU5 | 1WBV3 | 1WBW2 | | 1AHB2 | 42 | 2C832 | 1C210 | 3C311 | 5C219 | 3FKG2 | 1WBU6 | 1WBV4 | 1WBW3 | | 1AHB3 | 48 | 2C832 | 1C211 | 3C312 | 5C220 | 3FKG3 | 1WBU7 | 1WBV6 | 1WBW4 | | 1AHB4 | 54 | 4C885 | 3C115 | 3C313 | 5C221 | 3FKG4 | 1WBU8 | 1WBV7 | 1WBW5 | | 1AHB5 | 60 | 4C885 | 3C116 | 3C314 | 5C222 | 3FKG5 | 1WBU9 | 1WBV8 | 1WBW6 | | SUPPLY FAN | | | | | | | | | | | 3FKD6 | 60" | — | 3C733 | 3C189 | — | 3FKG5 | 1WBU9 | 1WBV8 | 1WBW6 | Form 5S5553 Printed in U.S.A. 04632 1208/546/VCPVP 469098 Rev. 3, December 2008 E N G L I S H E S P A Ñ O L F R A N Ç A I S | | | --- | | | | | | | | | | | | | | | | | | | | | E N G L I S H Dayton® Heavy-Duty Belt-Drive Exhaust and Supply Fans Dimensions and Specifications Model Shaft Dia. A B C D E F 1AHB5 60 11/2 66 34 79/16 2 267/16 61 SUPPLY FAN (See Figure 2) 3FKD6 60" 13/4 " 66" 351/2 " — 2" 331/2 " 61" Prop. Dia. FANS (See Figure 1) EXHAUST 1AHA8 24" 3/4" 28" 18" 43/8 " 11/4 " 135/8 " 243/8 " 1AHA9 30 1 34 20 51/4 11/4 143/4 303/8 1AHB1 36 11/4 40 22 6 1 16 363/8 1AHB2 42 11/2 46 263/8 6 2 203/8 421/2 1AHB3 48 11/2 54 28 7 2 21 481/2 1AHB4 54 11/2 60 331/2 61/2 2 27 55 Performance Sones @ Prop. Fan Max 0.000" SP CFM Air Delivery @ Static Pressure Shown Model Dia. HP RPM BHP @ 5Ft. 0.000" 0.125" 0.250" 0.375" 0.500" 0.625" 0.750" EXHAUST FANS 1AHA8 6469 1158 — — 3648 5867 4987 939 0.58 17.7 24" 1/2 1469 2475 — — 1686 — 3/4 1 3/4 1068 1178 783 6847 7669 9474 6194 7127 7730 21 24 19.7 5282 6375

FAQs

What safety guidance is given before assembling, installing, operating, or maintaining the fans?

Read and save the instructions and observe all safety information. Failure to comply may result in personal injury and/or property damage, and the instructions should be retained for future reference.

How are the exhaust and supply fan mounting positions different?

Exhaust fans should be mounted in a vertical position, while supply fans should be mounted in a horizontal position for supply applications.

What ratings and certification references are included for the ventilators?

Ratings are based on tests and procedures in accordance with AMCA Publication 211 and AMCA Publication 311, and the ventilators are certified to bear the AMCA seal under the AMCA Certified Ratings Program.

Oct 24, 2026

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