FAQs for UV Lights (scroll for Ionizer FAQs)
Q: What do I need to know about UV bulbs before making a purchase?
A: Make sure they are 254 nm and we recommend using 2 year insulated lamps. Uninsulated lamps lose effectiveness from cold or heat.
Q: Do UV lights give off Ozone?
A: No, the bulbs we use do not give off any ozone.
Q: Are UV lamps dangerous?
A: UV lamps are handled like florescent lamps however once they are on, UV eye protection is needed to view, and skin protection is needed if exposure will be more than a minute. Turn lights off while servicing.
Q: What voltage is required for UV lights?
A: Pro-Series uses any voltage from 120V to 277V using an auto sensing ballast. The Compact Series is 24V standard requiring a 40V transformer (also available in 120V). Mini-series lights use either 24V, 120V or 240V depending on the model.
Q: What do insulated bulbs do?
A: Insulated bulbs keep the UV intensity consistent through the temperature range seen in air handlers, versus the single layer glass bulbs that lose effectiveness from cold or heat fluctuations.
Q: What does 254 nm mean?
A: Ultraviolet radiation covers the wavelength range from 100 to 380 nanometers. The disinfection process uses wavelengths in the UVC range from 240 to 280 nanometers.
Q: Where is the best place to install UV lights in my system if I am wanting air stream purification?
A: there are 2 places the lights can be placed, in a duct or at the coil. The coil is best if possible due to the efficiency gains achieved when keeping the coil clear of bio-film but it’s not always possible so a duct may be required. Sometimes a minimal amount of light can be placed at the coil to keep it clean while fully addressing the air stream in a duct.
Q: How should the bulbs be spaced for coil irradiation?
A: For Coil irradiation
• Maximum germicidal effectiveness is within an 18” radius from UV lamp center axis
• The optimal distance between UV lamp(s) and the irradiated surface is 12”
• The distance between stacked UV lamps should not exceed 35”
• The distance between end-to-end UV lamps should not exceed 12”
• The distance of UV lamp ends to the edge of irradiated surface should not exceed 6”
Q: How should the bulbs be spaced for air stream sterilization?
A: This is a more complicated process based on several variables. Please consult us directly with the specifics of the job. For quoting purposes you can use the same layout as the coil irradiation but with a maximum of 12” between stacked bulbs. If doing duct air sterilization, we will need duct dimensions and CFM.
Q: Do I need to clean the bulbs?
A: Typically, if the filtration is good, the bulbs will not need cleaned in their lifespan. If there is a visible buildup noticed, the bulbs can be wiped down with a mild cleaner.
A: bulbs will need replaced in 2 years.
Q: Do ionizers produce Ozone?
A: Our Bipolar Needlepoint Ionizers are Ozone free and meet the UL 2998 spec
Q: Can you get a shock from the probes?
A: Yes, but it is not a shock that will cause serious harm
Q: How long do ions stay active for?
A: Ions stay active for up to 60 seconds
Q: Can multiple ionizers be added to a system?
A: Treating the air from a central location is good but at times multiple smaller units may be added further down the line for large buildings. For example, a large air handler serving a large building may want to have small ionizers added to VAV boxes or trunk lines serving specific areas.
Q: How do I know if my ionizer is working?
A: It has a small LED light indicating power is on. You can also use a pocket electrical tester to test the emitters. Once you get near the emitters with the tester it will indicate the presence of power.
Q: How should the air be passing the emitters
A: The air needs to be going through the emitters like goal posts. The air should pass all emitters consecutively.