RL 121 Series

The RL 121 series of ULTRAVIOLET GERMICIDAL IRRADIATION (UVGI) ozone free devices provide a quick and simple option for facility managers and building owners/managers to disinfect the cooling coil in the Air Handling Units (AHU), Fan Coil Units (FCU).


Destroys bacteria, mold fungi and virus etc

No ozone output, safe for occupants

Improves indoor air quality

Reduces need for regular washing of the coil

Keeps cooling coil in “like new” condition

Clean coil reduces load on blowers

Keeps air conditioning systems efficient, longer lasting and lower maintenance costs

Results in overall energy savings

Low investment


Quick and simple installation

Modular system. Add units as required

Easy to retrofit to existing AHUs

360 degree UV irradiation

Ballasts outside of airstream

High Output lamps provide high irradiance

Built-in BMS for remote monitoring


The Ballast Housing Unit shall be factory assembled and tested. It shall be assembled with the Ballast, on/off switch, lamp operation’s Led, BMS (Building Management System) card and flexible socket connector. It shall have side openings for wiring up multiple units. Unit shall have a ground terminal.

The Housing shall be constructed of 1mm mild steel and powder coated, with external flange for easy installation.

The Power source shall be electronic instant start type UL Listed, with a power factor greater than 0.95 and a power conversion greater than 75%. It shall include Rf and Emi suppression.

The UV lamps shall be very High Output Type in 546mm/22”, 846mm/33” or 1554mm/61” Lamps should be single ended, 4 pin, T5 type and produce UVC at 254 nm. It shall not produce ozone or other contaminants.

The Lamp Holding Clips shall be Stainles Steel type.

The unit shall be available in 230Vac 50/60 Hz, single phase.

Model Voltage Lamp Power Lamp Length Lamp Type Lamp Life
RL 121-22 230Vac 0.27A 55 Watts 546mm/22” T5 High Output 12,000 Hrs
RL 121-33 230Vac 0.62 75 Watts 846mm/33” T5 High Output 12,000 Hrs/
RL 121-61 230Vac 0.80A 155 Watts 1554mm/61” T5 High Output 12,000 Hrs

Not for outdoor use, unless under suitable cover from rain

Replacement Parts
Model Ballast Lamp Wire Loom Set Stainless Steel Clips
RL 121-22 ULB-S-08-90-0 UVLHO546T5L WL3SP SS-6-S
RL 121-33 ULB-S-08-90-0 UVLHO846T5L WL3SP SS-6-S
RL 121-61 ULB-P-08-2/75 UVLHO1554T5L WL3SP SS-6-S
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