Bard 8620-344 Wall Mount UV-C LED Field Kits Instructions

SUPPLEMENTAL INSTRUCTIONS8620-343 & 8620-344Wall Mount UV-C LED Field Kits

WARNINGElectrical shock hazard.Disconnect the remote electric power supply or supplies before servicing. Failure to do so can result in serious injury or death.

WARNINGExposed moving parts.Disconnect all electrical power before servicing.Failure to do so can result in severe injury or amputation.CAUTIONSharp metallic edges.Take care and wear appropriate protective devices to avoid accidental contact with sharp edges.Failure to do so can result in personal injury.CAUTIONUltraviolet band C (UV-C) energy may cause damage to non-metallic components except for UV-rated and HVAC-style drain pans. Select mounting locations that prevent exposure to vulnerable components. If mounting locations are limited, protect components with UV-resistant material such as aluminum foil, aluminum duct tape, metallic shields, etc.

WARNINGUV-C exposure can cause burns to skin and damage eyes.Ensure proper safety precautions are taken during installation.A trained, experienced technician must install the UV-C field kit.CAUTIONUV radiation hazard.Use only with shielding in place.Protect eyes and skin fromexposure to UV light.

Product Specifications

Overview

The UV-C field-installed light kits utilize UV-C LED lighting technology to sterilize and improve overall air quality within an occupied space. UV-C exposure is proven to damage the DNA of microorganisms and render them inactive aiding in preventing the spread of diseases. These instructions are applicable to the following models:

Personal Protective Equipment (PPE)UV radiation is absorbed by clothing, plastic or glass. Once absorbed, the UV radiation is no longer active. Wear UV goggles or face shield. Cover any exposed skin with coats, gloves, etc.UV-C band light spectrum is not visible to the eye.NOTE: The health aspects associated with the use of this product and its ability to aid in the disinfection of environmental air have not been investigated by UL.NOTE: Color shift or chalking may occur without affecting structural properties.Dimensions

Parts List

Installation

Field-supplied tools needed:

• Appropriate personal protection equipment, including gloves and safety glasses
• Electrical meter to verify power status
• Drill
• Phillips head screwdriver
• 5/16″ nut driver
• 7/8″ drill bit (optional)

Installation Procedure

1. Disconnect all power to the HVACR unit. Use the meter to verify that power has been disconnected.
2.  Remove outer and inner control panel covers.
3. Remove blower housing cover (large upper panel).
4. Attach two (2) magnetic clips to the UV light assembly (seeDimensions drawing on page 2).
5.  Install UV light assembly onto the blower partition on the inside of the front flange as shown in  Figure 1. UV light should be directed over blower outlets, facing the evaporator coil. (Models may have air deflector or control box mounted to blower partition; however, UV light can still be installed as shown.)
6.  Route wires into the control panel through bushing in blower partition or copper grommet or wire bushing, then into the control panel as shown in Figure 1.NOTE: Not all models will have bushing in the blower partition. A 7/8″ hole can be drilled and supplied bushing can be installed.
7. Kit 8620-343 (460V-3PH Units) Only: 460V stepdown transformer can be installed in any of these four locations: In control panel assembly, on side flange of the control panel, on blower partition or under blower partition (see Figure 2).
8. Connect red wire from UV light assembly to “NO” contact on the relay assembly (see Field Installation Diagram on page 9).
9. Determine unit supply voltage—located on the unit serial plate. Connect the black wire from UV light assembly to: (230V -1PH) − “L2” (230V -3PH) − “L3” (460V -3PH) −  Black Wire-Transformer See Field Installation Diagram on page 9.
10. Connect red wire from “COM” on relay assembly to:(230V -1PH) − “L1”(230V -3PH) − “L1”(460V -3PH) − White Wire-TransformerSee Field Installation Diagram on page 9.
11. Connect a short orange wire from relay assembly to the indicator light.
12. Connect short black/white wire from relay assembly to indicator light.
13. Control panel assemblies vary due to available control options. Find unused space on the control panel and install relay and indicator light assemblies in the control panel using self-drilling screws provided (see Figure 3).
14. Install door panel switch into panel switch bracket 113-908 (see Figure 4). The door panel switch acts as an interlock safety device to disable UV light source upon removal of blower access panel preventing UV exposure.
15. Install panel switch assembly on the left side of blower partition using self -drilling screw as shown in Figure 4. Some models may have an air deflector installed on the blower partition; mount switch assembly next to the blower partition as shown.
16. Route long orange wire from relay assembly (up to door panel switch) and connect to “NO”. Route orange wire from door panel switch (down to control panel) through the blower partition and control panel bushing as shown in Figure 1 on page 4.NOTE: Not all models will have bushing in the blower partition. A 7/8″ hole can be drilled and supplied bushing can be installed.
17. Locate low voltage strip in the control panel. Seat spade end of the orange wire from panel switch assembly under the “G” terminal on the low voltage strip assembly, then seat spade end of black/white wire from coil on relay assembly under the “C” terminal on low voltage strip (see Figure 5 on page 8).
18. Wires can be dressed with provided zip ties or by tucking into wire channels. Ensure wires are secured away from sharp edges and moving parts to prevent damage. Cover wires and plastic components within a distance of 6″ of the UV light with foil tape to create a protective barrier from the UV light.
19. UV light will not function without the blower panel installed because of the panel switch (interlock safety switch). Do NOT press the door panel switch with the blower panel removed as the UV source could become active and create UV exposure.Replace blower access cover (large upper panel). Adhere UV-C Wrning Label 7961-963 to blower access panel.Adhere “UV-C LED Light Bar Installed” Label  7961-622- 0375 to unit serial plate. (Serial plate is silver and located on the exterior of the unit cabinet or on a service panel with “5253-039XXXX” printed in the lower right corner.)
20. Now that the blower panel is installed, UV light operation can be safely verified. Restore power to the unit and provide a “G” call signal from the thermostat. The operation can be confirmed if the indicator light installed in Step 8 is ON in the control panel. MIS-4331 Do NOT attempt to look at UV source to confirm operation!CAUTIONUV radiation hazard.Use only with shielding in place.Protect eyes and skin from exposure to UV light.
21. Disconnect power to the unit. Replace all inner and outer panel covers.
22. Restore power to the unit.

Bard Manufacturing Company, Inc.Bryan, Ohio 43506www.bardhvac.com

Manual: 7960-918Supersedes: NEWDate: 6-23-21

References

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