BioShieldUV® Classic (S) Series Complete Installation Guide
Models covered: BioS 18W Classic | BioS 36W Classic | BioS 72W Classic
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Safety Warnings
Follow all safety and building codes. Read every warning below before installing, adjusting, or servicing the unit. These warnings apply to all models and all installation environments.
Installation Safety
Read the manual carefully before attempting to install the unit. Improper installation, adjustment, alteration, service, or maintenance can result in fire or electrical shock and create a risk of personal injury or property damage. Consult a licensed electrician or contractor for assistance during installation.
Lamp Handling
Handle the UV lamp with gloves at all times. Oils from bare hands reduce UV output and cannot be reversed by cleaning.
If the lamp glass is touched without gloves, wipe the affected area with isopropyl alcohol before powering the unit on.
Eye Safety
Never expose eyes directly to UV light. Looking at the lamp can cause eye damage.
Wear safety glasses during installation and any maintenance work.
Electrical Safety
Turn off the main power switch before plugging in the unit or performing any maintenance on it. Some installations have more than one disconnect switch. Check for all of them before beginning work.
Broken Lamp Hazard
Never touch a broken UV lamp with bare hands.
UV lamps contain a small amount of mercury and may be harmful to skin and eyes if released. If mercury contacts skin, wash the area immediately with mild soap and water and seek medical attention if necessary. Carefully collect broken pieces and dispose of them in accordance with local environmental regulations.
What is in the Box
Ballast & 2 Bulbs
Germicidal UV-C bulb
120v Adaptor
Wall adapter (WallPlug) or external ballast (HVAC)
Air Seal Straps
Wall adapter (WallPlug) or external ballast (HVAC)
Metal Drill Bits & Screws
4-pin keyed connector cable
User Guide
Threaded strain relief for duct wall (1″ hole)
Installation Template
Creates 1″ cable hole (all models) & ½″ sight glass hole (HVAC)
Safety Precautions Before Installing
Turn off HVAC system and ensure all electrical connections are off.
Never look directly at UV-C light. Wear protective eyewear and gloves. Avoid touching the bulb glass or clean it with isopropyl alcohol if touched.
Part 1: Preparing HVAC Wall
Position Template
Place the mounting template on the HVAC panel (included in the kit). It is a sticker and should stick on easily.
Drill Holes for Bulbs
Drill two holes at the template’s marked positions where the bulbs would go (circular drill bit included).
Drill Holes for Mounting Screws
Drill 4 holes on the corners (marked in the template) where the mounting screws would be inserted (circular drill bit included).
Part 2: Preparing Base Unit For Install
Slide UV-C Bulbs Into Slots
There are two slots on the base unit. Slide the UV-C bulbs into each slot till you hear them click.
Seal Strips (Optional)
Peel off the back of the air-seal strips and stick them around the perimeter of the base unit. (Air-seal strips included in the kit, cut to size if required).
Part 3: Placing Base Unit Onto HVAC Wall
Place Unit Into The HVAC Wall
Pick up the prepared base unit and carefully insert the bulbs into the drilled holes. Make sure the corner holes align with holes on the unit.
Screw In
Use the provided screws to secure the unit in place.
Combine Power
Attach the adapter to the base unit, then plug it into a nearby 120 V outlet.
Post-Installation Checks
Ensure the indicator light is ON — this confirms the lamp is operating.
Clean around the unit of any dust to maintain optimal UV performance.
Maintenance & Replacement
Bulbs last approximately 8,000 hours (~1 year of continuous use).
Replace bulbs promptly when the indicator light signals it’s time.
Never Miss a Replacement with Guardian Club
Guardian Club automatically ships you a replacement lamp every 10 months. Members receive 10% off replacement bulbs, automatic warranty coverage, and hassle-free delivery every cycle.
All replacement bulbs include a 14-day warranty from the date of delivery. Guardian Club members receive extended coverage of up to 6 months from delivery.
Free to join. Ships automatically. Keeps your warranty active.
www.BioShieldUV.com/club
UV-C Lamp Disposal
UV-C lamps contain a small amount of mercury and must be disposed of in accordance with local environmental regulations. Do not place used lamps in standard household waste unless your local waste management authority explicitly permits it.
Visit www.lamprecycle.org to find mercury lamp recycling locations near you, or www.earth911.com to locate your local or state waste management program.
Many hardware and home improvement retailers that sell UV or fluorescent bulbs also accept used bulbs for drop-off recycling at no charge. If no recycling option is available and local regulations allow, seal the lamp in a plastic bag before placing it in household waste collection.
Frequently Asked Questions
Do I need a professional installer?
Where exactly should I install the UV lamp?
The lamp has a visible blue glow. Is UV-C actually working?
Can I wire the unit to run only when the HVAC fan runs?
My unit is showing a red light. What do I do?
Will UV-C damage plastic or rubber components inside my system?
Can I install this on non-metallic ductwork?
What if my HVAC is a communicating system such as Nest or Ecobee?
The unit smells strange on first use. Is that normal?
How do I know when to replace the bulb?
Take replacement off your to-do list entirely. Guardian Club members receive automatic delivery on the right schedule. [Join for free →]
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