The VIQUA Arros 9-IHS12 combines an Arros 9 ultraviolet (UV) disinfection system with pre-filtration on a single wall-mounted bracket. A 10 in. housing holds a CMB-510-HF sediment cartridge and a 20 in. housing holds a C2-02PB carbon block cartridge, so the water is filtered before it reaches the UV chamber.
The sediment cartridge traps sand, silt and rust that would otherwise shade microorganisms from the UV light. The carbon block cartridge then reduces chlorine taste and odour as well as lead. In the UV chamber a high-output lamp inactivates microorganisms including Cryptosporidium, Giardia and E. coli without adding anything to the water.
The system is rated at 9 gpm (34.1 lpm; 2.0 m³/hr) at VIQUA’s 30 mJ/cm² standard dose and 7 gpm (26.5 lpm; 1.59 m³/hr) at the 40 mJ/cm² NSF/EPA dose, measured at end of lamp life. The inlet is 1 in. FNPT and the outlet is a combo 1 in. MNPT / 3/4 in. FNPT port. The C2-02PB carbon cartridge is rated by VIQUA for up to 10 gpm.
Maintenance is a once-a-year VA09LU lamp unit change, prompted by the touchscreen controller, plus filter cartridge changes about three to four times a year depending on water quality. A pressure-release button and a sump wrench make cartridge changes simple.
Okanagan Aquatech installs and services this system, including water testing to confirm the right configuration for your home.
Features
- Arros UV chamber and filter housings pre-mounted on one bracket
- CMB-510-HF sediment and C2-02PB carbon block cartridges included
- Pressure-release button on the filter head
- Chamber-mounted controller with LCD touchscreen
- One-piece lamp unit with built-in lamp-life tracking (Stream technology)
- PolyProtect shield allows direct connection to PEX
- Sump wrench WR40-50 and housing O-ring OR40-50W listed as system components
Specifications
| Flow rate at 30 mJ/cm² (VIQUA standard) | 9 gpm (34.1 lpm; 2.0 m³/hr) |
|---|---|
| Flow rate at 40 mJ/cm² (NSF/EPA dose) | 7 gpm (26.5 lpm; 1.59 m³/hr) |
| Flow rate at 16 mJ/cm² (US Public Health dose) | 17 gpm (64.3 lpm; 3.86 m³/hr) |
| Rating basis | At 95% UV transmittance, end of lamp life |
| UV chamber | 11.2 in. × 4.0 in. (28.4 cm × 10.16 cm), 304 stainless steel |
| Controller | VA-CTRL, LCD touchscreen, mounted on the chamber; 10.5 in. × 5.0 in. × 6.5 in. (26.67 cm × 12.7 cm × 16.51 cm) |
| Lamp | VA09LU high-output lamp unit (lamp sealed in a fused quartz sleeve), 25 W, rated about 9,000 hours |
| Pre-filter housings | One 10 in. and one 20 in. three-piece filter housing (VIQUA “premium three-piece” housings) |
| Sediment cartridge | CMB-510-HF high-flow sediment cartridge, 4.5 in. × 10 in., 5 micron inner / 15 micron outer, max 18 gpm |
| Carbon cartridge | C2-02PB carbon block cartridge for chlorine, taste, odour and lead, 4.5 in. × 20 in., 10 micron, max 10 gpm, NSF 42 (per VIQUA) |
| Inlet port | 1 in. FNPT |
| Outlet port | Combo: 1 in. MNPT / 3/4 in. FNPT (3/4 in. MNPT on units built before September 23, 2024) |
| Overall dimensions (L × H × D) | 24.95 in. × 27.5 in. × 9.0 in. (63.4 cm × 69.9 cm × 22.9 cm) |
| Shipping weight | 46 lb (20.9 kg) |
| Electrical | 100–240 V, 50/60 Hz, 1.5 A max; 35 W power consumption |
| Maximum operating pressure | 100 psi (6.9 bar) |
| Water temperature | 2–40 °C (36–104 °F) |
| Displays | Lamp replacement reminder, visual lamp life, true lamp running time, total system running time |
| Recommended water quality | Hardness under 7 gpg (120 mg/L), iron under 0.3 mg/L, manganese under 0.05 mg/L, tannins under 0.1 mg/L, turbidity under 1 NTU, UV transmittance over 75% |
| Validation | Validated by microbial testing for UV dose delivery to inactivate Cryptosporidium, Giardia, E. coli and fecal coliform (VIQUA) |
| Warranty | VIQUA limited warranty: 10 years on the UV chamber, 5 years on the controller and hardware, 1 year on the lamp unit (owner’s manual) |
Maintenance
Replace the VA09LU lamp unit once a year, when the controller alerts (about 9,000 hours). The lamp and quartz sleeve are a single part, so there is no separate sleeve to buy. VIQUA recommends cleaning the quartz with a mild acid such as CLR or vinegar during lamp changes and softening the water if hardness is over 7 gpg. Change the filter cartridges about three to four times a year depending on water quality and use; a gradual drop in water pressure means they are due.
Replacement parts
- VA09LU – replacement UV lamp unit (lamp and quartz sleeve in one piece)
- VA-CTRL – controller for all Arros systems
- 411173-R – lamp head O-ring
- 411111-R – drain plug
- 411138-R – drain plug O-ring
- 411203-R – optional splash guard
- CMB-510-HF – sediment cartridge
- C2-02PB – carbon block (taste, odour and lead) cartridge
- OR40-50W – filter housing O-ring
- WR40-50 – sump wrench
- 420619-R – mounting bracket clamp
- 260251-R – controller power cord (120 V models)
