ADC 181B Air Duct and Air Connector Nonmetallic with Plain Instruction Manual
- June 17, 2024
- ADC
Table of Contents
INSTALLATION INSTRUCTIONS
Air Ducts and Air Connectors
Nonmetallic with Plain Ends
Connections – Using Tape & Fasteners
- After desired length is determined, cut completely around and through duct with knife or scissors. Cut wire with wire cutters. Fold back jacket and insulation.
- Slide at least 1″ [25 mm] of core over fitting and past the bead. Seal core to collar with at least 2 wraps of duct tape. Secure connection with clamp placed over the core and tape and past the bead.
- Pull jacket and insulation back over core. Tape jacket with at least 2 wraps of duct tape. A clamp may be used in place of or in combination with the duct
Splices – Using Tape & Fasteners
- Fold back jacket and insulation from core. Butt two cores together on a 4” [100 mm] min. length metal sleeve.
- Tape cores together with at least 2 wraps of duct tape. Secure connection with 2 clamps placed over the taped core ends and past the beads.
- Pull jacket and insulation back over cores. Tape
Connections & Splices – Using Mastic & Fasteners
Step 1
After desired length is determined, cut completely around and through duct
with knife or scissors. Cut wire with wire cutters. Pull back jacket and
insulation from core.
Step 2
Apply mastic approximately 2″ [50 mm] wide uniformly around the collar of the
metal fitting or over the ends of a 4″ [100 mm] min. length metal sleeve.
Reference data on mastic container for application rate, application
thickness, cure times and handling information. Step 3
Slide at least 2″ [50 mm] of core over the fitting or sleeve ends and past the
bead.
Step 4
Secure core to collar with a clamp applied past the bead. secure cores to
sleeve ends with 2 clamps applied past the beads.
Step 5
Pull jacket and insulation back over core ends. Tape jacket(s) with at least 2
wraps of duct tape. A clamp may be used in place of or in combination with the
duct tape.
NOTES:
- For uninsulated air ducts and air connectors, disregard references to insulation and jacket.
- Use beaded sheet metal fittings and sleeves when using nonmetallic clamps.
- Use mastics listed and labeled in accordance with Standard UL 181B and marked “181B-M” on container.
- Use tapes listed and labeled in accordance with Standard UL 181B and marked “181B-FX’.
- Nonmetallic clamps shall be listed and labeled in accordance with standard UL 181B and marked “181B-C”.
Use of nonmetallic clamps shall be limited to 6 in. w.g. [1500 Pa] positive pressure.
Copyright 2021, Air Duct Council AIR DUCT COUNCIL
1300 Summer Ave.
Cleveland, OH 44115-2851
Tel. 216-241-7333
Fax 216-241-0105
www.flexibleduct.org