Viqua PRO24-186 Ultraviolet Water Disinfection System User Manual

VIQUA PRO24-186 Ultraviolet Water Disinfection System Manual

Introduction to the VIQUA PRO24-186 Ultraviolet Water Disinfection System

The VIQUA PRO24-186 Ultraviolet Water Disinfection System is a high-capacity ultraviolet water treatment solution designed to reduce harmful microorganisms in residential, commercial, institutional, and light-industrial water supplies. It delivers a high UV dose for microbial inactivation without adding chemicals, changing water taste, or producing chemical by-products.

With a rated capacity of up to 24 gallons per minute, the system is suitable for applications that require dependable disinfection at demanding flow rates. Its validated performance supports the treatment of microorganisms such as bacteria, Cryptosporidium, Giardia, and adenovirus when the system is correctly installed and operated within its specified water-quality and flow conditions.

The system combines a stainless-steel UV chamber, electronic controller, UV sensor, lamp assembly, and flow-monitoring components. The controller helps monitor operating conditions and can alert the operator when maintenance or corrective action is required. This makes the PRO24-186 practical for whole-building water treatment, private wells, farms, hospitality facilities, and process-water applications.

This UV water disinfection system is best suited to users who need high-flow, chemical-free microbial control and who can provide appropriate prefiltration and routine maintenance. It is not a substitute for particulate filtration, sediment removal, or water-quality testing. Installing suitable pretreatment is essential because cloudy, colored, or mineral-laden water can reduce UV transmission and lower disinfection effectiveness.

VIQUA PRO24-186 Specifications and Key Features

• UV dose: 186 mJ/cm².
• Maximum rated flow: 24 gallons per minute, or approximately 90 liters per minute.
• Validated flow range: 10, 15, 20, and 24 gallons per minute, depending on ultraviolet transmittance.
• Validated UV transmittance: 75%, 85%, 90%, and 95% conditions.
• Microbial application: Designed for validated UV treatment of bacteria, Cryptosporidium, Giardia, and adenovirus under applicable operating conditions.
• Chamber dimensions: Approximately 41 inches long by 18 inches wide.
• Controller dimensions: Approximately 13 inches by 6.5 inches by 4.5 inches.
• Connection size: 1¼-inch MNPT by 1-inch FNPT combination connections.
• Electrical supply: 100–240 V AC, 50/60 Hz.
• Power consumption: Approximately 460 watts.
• Maximum operating pressure: 125 psi, or approximately 861 kPa.
• Minimum operating pressure: 15 psi, or approximately 103 kPa.
• Water temperature range: Approximately 36–104°F, or 2–40°C.
• Ambient air temperature range: Approximately 32–104°F, or 0–40°C.
• Shipping weight: Approximately 63 pounds, or 29 kilograms.

Actual disinfection performance depends on flow, UV transmittance, water clarity, lamp condition, sleeve cleanliness, sensor operation, and correct installation.

How to Install and Set Up the VIQUA PRO24-186

1. Choose a dry, accessible installation location near the main water line and a suitable electrical outlet. Allow enough clearance to remove the lamp and quartz sleeve during maintenance.
2. Install the stainless-steel UV chamber vertically with the flow-direction arrows pointing upward. Secure the chamber to a wall or rigid support using appropriate fasteners.
3. Install sediment and other required pretreatment before the UV chamber. The water should be clear and free from excessive turbidity, color, iron, manganese, and scaling deposits.
4. Connect the inlet and outlet plumbing using compatible fittings, unions, shutoff valves, and a bypass arrangement where appropriate. Support the pipework so the chamber is not exposed to mechanical stress.
5. Install the flow-meter components and connect the sensor and controller cables according to the supplied installation instructions. Keep electrical connections dry.
6. Confirm that the lamp and quartz sleeve are correctly installed. Do not touch the lamp glass with bare fingers; use clean gloves or a soft cloth.
7. Open the water supply slowly and inspect every connection for leaks. Flush the system before placing treated water into service.
8. Connect power and check the controller display or indicators. Verify that the lamp, UV sensor, and flow-monitoring functions operate normally.

Safety warning: Never look directly at an operating UV lamp. Disconnect power before opening the chamber, removing the lamp, or servicing electrical components. UV treatment does not remove chemicals, heavy metals, sediment, or dissolved contaminants.

VIQUA PRO24-186 Troubleshooting Guide

System does not power on

Check the electrical outlet, breaker, ground-fault protection, power cable, and controller fuse where applicable. If the breaker trips repeatedly, disconnect the system and have the electrical installation inspected by a qualified professional.

Low UV intensity or UV sensor alarm

Confirm that the lamp is operating and correctly seated. Clean the quartz sleeve if it has scale, deposits, or cloudiness. Check that the UV sensor connector is fully inserted and that pretreatment is controlling turbidity and color. A worn lamp may still glow while producing insufficient UV output, so replace it according to the maintenance schedule.

Flow alarm or inadequate disinfection

Verify that the actual flow does not exceed the system’s validated capacity. Inspect valves, filters, pipework, and the flow meter for blockage or incorrect installation. Excessive flow can reduce delivered UV dose.

Water leaks from the chamber

Shut off the water supply, release pressure, and inspect unions, seals, fittings, and the quartz sleeve assembly. Replace damaged seals or components before restoring service.

Preventive maintenance and support

Keep pretreatment filters maintained, inspect the sleeve regularly, and replace the UV lamp at the interval specified in the owner’s documentation. For model-specific diagnosis, contact VIQUA Technical Support at 1-800-265-7246 or technicalsupport@viqua.com. Have the model number, purchase information, installation details, and controller message available.

VIQUA PRO24-186 Pros and Cons

Advantages

• High-flow treatment: The 24-gallon-per-minute rating suits larger homes, commercial premises, and other demanding applications.
• High UV dose: The 186 mJ/cm² dose provides substantial microbial-inactivation capability when flow and water quality remain within validated limits.
• Chemical-free operation: UV treatment does not add disinfectant chemicals or normally alter the taste and odor of water.
• Electronic monitoring: The controller, UV sensor, and flow-monitoring components help identify lamp, sensor, and operating problems.
• Broad electrical compatibility: The 100–240 V, 50/60 Hz supply supports a range of installation environments.

Limitations

• Requires pretreatment: Sediment, color, scale, and poor UV transmittance can reduce performance, so additional filtration may be necessary.
• Requires electricity: The system cannot disinfect water during a power outage unless an appropriate backup power arrangement is provided.
• Ongoing maintenance: Lamp replacement, sleeve cleaning, sensor checks, and filter service are necessary for reliable operation.
• Installation space: The long chamber and controller require more room than many lower-flow residential UV systems.
• Best suited to high-demand users: Smaller households with low flow requirements may find a lower-capacity UV system more practical, while users needing chemical or dissolved-contaminant removal need additional treatment equipment.