Nailor 3210 Dual Duct Terminal Units Instruction Manual

: June 1, 2024
: Nailor

Table of Contents

Nailor 3210 Dual Duct Terminal Units
Product Information
Product Usage Instructions
Safety Consideration
Supporting the Assembly
Duct Connections
Field Wiring
Control Start-up, Operation
Labels
Replacement Parts
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Nailor 3210 Dual Duct Terminal Units

Nailor-3210-Dual-Duct-Terminal-Units-PRO

Product Information

Specifications

Product: Dual Duct Terminal Units
Model Numbers: 3210, 3230, 3240
Control Voltage: 24V
Control Sequence: DP3

Product Usage Instructions

Safety Considerations
Ensure to check for any shipping damage upon receiving the assembly. Do not handle by the inlet velocity sensor or control package during unpacking and installation.

Supporting the Assembly
Dual duct units should be independently supported. Use field-mounted hanger brackets or hanger straps for support. Follow job specifications for the support method.

Duct Connections
Do not insert duct work inside the inlet collar. Install straight duct prior to the inlet for optimum performance. Follow SMACNA guidelines for duct installation.

Model-Specific Instructions:

Models 3230 and 3240: Attach a rectangular duct the size of the terminal outlet to the outlet end of the terminal.
Model 3210: Install a rectangular duct matching the terminal outlet size.

Field Wiring
All field wiring must comply with NEC and local codes. Refer to electrical, control, and piping diagrams on labels affixed to the control enclosure box.

Control Start-up and Operation
Contact your local Nailor Representative for detailed start-up and operating procedures. For controls by other manufacturers, contact their local or national office.

Labels
The unit comes with information labels including nameplate details specifying unit size, voltage, control sequence, and wiring instructions.

Frequently Asked Questions (FAQ)

Q: Can I install the unit in a different location than specified on the label?
A: Installing the unit in a different location may result in excessive start- up labor. Contact your local representative for guidance.

Safety Consideration

The equipment covered by this manual is designed for safe and reliable operation within its design specification limits. To avoid personal injury or damage to equipment or property while installing or operating this equipment, it is essential that qualified, experienced personnel perform these functions using good judgment and safe practices. Equipment is not to be used by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction. Children being supervised should NOT play with equipment. Equipment’s maximum altitude of use is 2,200 m.

Receiving Inspection
After unpacking the assembly check it for shipping damage. If any shipping damage is found, report it immediately to the delivering carrier. During unpacking and installation do not handle by the inlet velocity sensor or the control package.

Supporting the Assembly

Dual duct units are designed to be independently supported. When requested, unit is supplied with field-mounted hanger brackets for use with hanger rod up to 3/8″ (9.5) dia. Hanger brackets should be screwed into the top of the unit casing sides and/or the inlet and outlet ends. Hanger straps may alternately be used and screwed directly into the sides of the unit casing. Use the support method prescribed for the rectangular duct in the job specifications.

Important: If unit is equipped with pneumatic controls, it should be mounted right side up and level within ±10 degrees of horizontal and parallel to the airflow. The terminal is marked with a label stating “Top of Unit”. The first letter in the model number indicates control type (P is for pneumatic). If the unit is mounted upside down, the controllers will have to be re- positioned, re-piped, and re-calibrated. Analog control units (A-analog model number pre-fix) may be installed in any orientation. Some Digital (DDC) controls (D-digital model number prefix) are position-sensitive dependent on the airflow sensor transducer. Check with the controls manufacturer for verification.

Duct Connections

Slip each inlet duct over the inlet collar of the terminal. Fasten and seal the connection as described in the job specification. The diameter of the inlet duct “D” (see Figure 1) for round inlets (Models 3230 and 3240 with mixing attenuators) must be equal tothe listed size of the terminal; i.e., a duct that actually measures 8″ (203) must be fitted to a size 8 terminal inlet. The inlet collar is made 1/8″ (3) smaller than nominal duct size in order to fit inside the duct. Model 3210 (no mixing attenuator) utilizes flat oval inlet collars on unit sizes 12 through 16. They are undersized for flexible duct connection. For hard inlet duct connections, refer to submittal drawing for dimensional data. The supply ductwork should be insulated up to the face of the terminal unit.

Important: Do not insert duct work inside the inlet collar of the assembly. For optimum performance, 2 to 3 equivalent diameter of straight duct should be installed prior to the inlet of the unit. All ducts should be installed in accordance with SMACNA guidelines. The outlet end of the terminal for models 3230 and 3240 is supplied with a rectangular collar. A rectangular duct the size of the terminal outlet should be attached.

Model 3210 is supplied with slip and drive-duct connections. A rectangular duct, the size of the terminal outlet should be installed. Nailor-3210-Dual-
Duct-Terminal-Units-1

Field Wiring

All field wiring must comply with NEC and local codes. Electrical, control, and piping diagrams can be found on labels affixed to the exterior/interior of the control enclosure box.

Control Start-up, Operation

Your local Nailor Representative can provide detailed information about start- up and operating procedures for Nailor’s digital, analog, and pneumatic controls. For specific information on controls provided by other manufacturers, contact the specific manufacturer’s local or national office. This applies whether the controls were factory or field-mounted.
Note: Digital controllers may use specific communication addresses based on Building Management Systems Architecture and original engineering drawings. Installing the terminal in a location other than that noted on the label may result in excessive start-up labor.

Labels

Dual duct terminal units are shipped from the factory with the following information labels.

Nameplate Label – affixed to the air terminal casing on the control mounting panel. Shows tagging information, serial number, model number, size, cfm, etc.

Nameplate Label