Technical Specifications of Ruks GermiTron Ultra Violet Germicidal Irradiation System

1. The UVGI System shall be designed to achieve Kill Rate not less than 90% per pass, based on the Kill Rate of Escherichia Coli, or default rate of 3,000 µwsec/cm². However, it shall be suitable to achieve Kill Rate of all air borne mold, spores, bacteria, and viruses, at varying extent of kill.
2. In the event specific bacteria, virus or disease is mentioned, the UVGI System shall be designed to achieve Kill Rate based on the specified bacteria that causes the defined disease.
3. The Manufacturer shall provide scientifically developed Selection Charts to prove the delivery of designed intensity of Kill Rate based on Air Velocity on UVGI, length of Contact Duct Downstream and Upstream of UVGI, and Lamp Energy intensity. An individual Selection Chart shall be provided for each unit. The Selection Charts shall incorporate all of the above parameters.
4. The contact duct length for design Kill Rate Upstream and Downstream of the UVGI shall be clearly defined by the manufacturer. The required length of straight duct shall be provided by the installer at site. These contact duct lengths shall correspond to the lengths used in the Selection Chart. As this is essential in establishing Kill Rate and system dependability, this clause cannot be waived.
5. As UV Lamps lose energy over time, selection shall be based on UV intensity at end of Lamp life, which shall be reckoned at 80% of energy at beginning of Lamp life. Manufacturer shall warrant this. Considering the impact on performance, this cannot be compromised.
6. The Lamps shall be high output type 800 mA each, with specially formulated internal coating to provide Rated Average Life of 16,000 Hrs. Lamps shall be environmentally friendly with mercury less than 10 Mg per Lamp. Low intensity Lamp 425 mA is not acceptable.
7. The design intensity of the Lamp shall be based on wavelength 253.7 nm. It shall be ensured the Lamp shall not perform at ultra low wavelength
180 nM or lower, to ensure no uncontrolled and unmodulated ozone is put out by the lamp.
8. Each Lamp shall be provided with externally and readily visible indication to show Lamp operation or failure, without the need to open any access door, or shut down the UVGI System.
9. Lamp shall be fitted with uniquely designed Holder and Pins to prevent Lamp replacement with unqualified and unsuitable Lamp.
10. The Lamps shall be installed in frame mounted specially formulated Germicidal Quartz Sleeve equivalent to GE Type 214, rated for high transmission of UVC Rays at 253.7 nM to transmit UVC Rays, but filter 100% of any unintended ozone producing frequency. It shall be possible to replace lamp quickly, easily, and error safe without removing the Quartz Sleeve, without the need to open any access door, and without drawing the UVGI frame out of the duct.
11. The Lamps shall not be exposed to, nor shall have direct contact with air in the duct.
12. The Quartz Sleeve shall also prevent impregnation of dust, particle matter, and moisture from cooling coil or humidifier condensation, on the Lamp.
13. Due to possible proximity of UV Lamps to Cooling Coil, carry over moisture from Cooling Coil may settle on the UVGI Lamps. The Quartz Sleeve shall serve to prevent this, preventing reduction of Lamp performance and eliminating Fire Hazardness due to moisture coming in contact with electrical elements of the Lamp.
14. The Quartz Sleeve shall also serve to confine and hold mercury spill for environmentally safe disposal, in the event of breaking of Lamp. This prevents mercury spill into the ventilation duct.
15. Due to proximity of UVGI System to Cooling Coil, carry over moisture from Cooling Coil will settle on the UVGI System. The Quartz Sleeve shall serve to prevent the moisture from settling on the Lamps, preventing reduction of Lamp performance and eliminating Fire Hazardness from moisture coming in contact with electrical elements of the Lamp
16. The Quartz Sleeve should also serve to confine and hold mercury spill for environmentally safe disposal, in the event of breaking of Lamp. This prevents mercury spill into the ventilation duct.
17. Ballasts shall be electronic type, life rated for greater than 15,000 starts, and conform to Sound Rating A.
18. To prevent interference with hospital health care Monitors and Communication System, the Ballasts shall meet FCC Part 18 (Class A) for EMI and RFI non consumer limits, and ANSI Standard C62.41.
19. Indicating Lamps shall be provided on the remote mounted Electrical Box to indicate Ballast Failure.
20. The Ballast shall be Listed to UL 935 (Class P, Type HL, Type 1).
21. To minimize fire hazards and ensure high safety standards, electrical components in the duct installed UVGI shall be confined to bare minimum; Lamps and Terminal Block only.
22. All other electrical components such as Ballasts, Disconnect Switch, Fuse, Hour Meter etc shall be housed in remotely mounted 18G CRS powder coated Electrical Box. UL Listed cable harness between Electrical Box and UVGI frame shall be factory provided, complete with UL Listed error safe Electrical Quick Connector. No field provided wiring will be required except power source and AHU Motor Interlock Wiring.
23. An Hour Meter shall be provided in the remotely mounted Electrical Box to indicate Lamp change. The Hour Meter shall have at least Two normally Open (NO) Dry Contacts, one to activate unit mounted indicating lamp to warn Lamp change, and the other for remote indication or interface to BMS. It shall have RS 232 output to BMS to indicate Hours. The Hour Meter shall be UL Listed to 508.
24. The Control System shall be provided with Terminal Block, fire rated to UL 94 V0.
25. Installation of UVGI frame in the duct shall be with factory provided Guide Rails and Installation Rails. Cover Plates and all necessary hardware required for installation shall be factory provided by Manufacturer. No field provided material or hardware shall be required for installation of the system, except input power wiring and AHU Fan Motor Interlock wiring. This is to ensure no non listed parts are used, with aim to optimize safety in Hospitals and Health Care Facilities
26. The UVGI shall be electrically interlocked to AHU Fan Motor Contactor. This allows the UVGI to operate only if the AHU Fan Motor is in operation. Terminals shall be provided in the Electrical Box to connect field provided interlock cable.
27. All wetted parts shall be Stainless Steel to render it suitable for use in Hospitals, Health Care Facilities, and in Food Processing Plants. All non wetted parts shall be 18 G CRS powder coated.
28. To optimize UV intensity and Kill Rate, the entire inner surface of Contact Ducts Upstream and Downstream of UVGI fixture shall be lined with manufacturer provided Reflective Aluminum Lining complete with factory applied acrylic pressure sensitive adhesive. It shall be ready for field application without need for any field provided material. The Aluminum Lining and adhesive shall be listed to UL 723 5/10 Flame/Smoke (Limits Smoke and Fire Spread).
29. Placement of the Lamps in the Frame shall ensure entire cross sectional area of the duct is enveloped with UV rays with no possibility of bypass by pathogens.
30. The System shall be suitable for operation in air flow 32ºF (0ºC) to 140ºF (60ºC), RH 0 to 100% condensing or non condensing, and with water droplets due carry over moisture from Cooling Coil.
31. As an option, or if specified, UV Intensity Sensor shall be factory installed on the UVGI frame, together with UV Intensity Monitor. Control wiring between the two shall be factory provided. This shall indicate UV Intensity in µw/cm2. The Monitor shall also deliver 0–10 VDC Analog Signal to BAS. It shall have at least 1 normally Open (NO) Dry Contact to activate alarm if UV Intensity drops below set level.
32. The operating voltage shall be 110 to 240 Volts, 1 Ph, 50/ 60 Hz. The equipment shall be properly grounded.
33. The UVGI Equipment shall be UL Classified to the following standards and CE Certified;
• UL 1995 ABQK: Air Conditioning Equipment Accessories, Air Duct Mounted
• UL 2043: Fire Test for Heat and Visible Smoke Release for Discreet Products and Accessories installed in Air Handling Spaces.
34. Additionally, all individual Parts and Components shall be rated and UL Listed or UL Recognized to;
• Electronic Ballast:
• UL 935 (Class P, Type HL, Type 1, Outdoor use)
• CSA Certified
• Sound Rated A
• Compliance to FCC part 18 (Class A) for EMI and RFI non consumer limits)
• ANSI Standard C62.41
• On OFF Switch: UL 1054
• Hour Meter UL 508
• Terminal Block: Fire Rated to UL 94 V.0
• Quick Connect Electrical Coupling: Fire Rated to UL 94 V.0
• Inter Connect Cable Harness: Fire Rated to UL 94 V.0
• Lamp Holder: Volox Fire Rated to UL 94 V.0
• Indicating Lamps: E 20325
• Thermal Bond between Glass and UVGI Frame; PTFE Non Flammable to UL 94 V.0
35. Appropriate Safety and Caution Notice shall be screen printed on the cover plate of UVGI frame and on the electrical box. Placing adhesive labels shall not be accepted, so as not to compromise on safety.
36. The Approved System is Ruks GermiTron and the Approved Manufacturer is Ruks Engineering Ltd, Canada.