1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Zurn AquaSense ZER6000AV-HET-TM EZ Gear-Driven 1.28 GPF Exposed Sensor Water Closet Flush Valve. This high-efficiency flush valve is designed for commercial restroom applications, offering reliable, hands-free operation and water conservation.
The ZER-TM Series features a ceramic disc cartridge and motor gear-driven operation for durability and precision. Its 1.28 GPF (Gallons Per Flush) rate contributes to water savings, while the polished chrome-plated finish and quiet diaphragm operation make it suitable for various commercial environments.
Figure 1: Zurn AquaSense ZER6000AV-HET-TM Flush Valve
2. Safety Information
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in property damage, personal injury, or improper product function.
- Ensure water supply is turned off before beginning any installation or maintenance.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, during installation.
- All plumbing work should comply with local codes and regulations.
- Do not use abrasive cleaners or tools that may damage the chrome finish or internal components.
- Keep batteries out of reach of children. Dispose of batteries according to local regulations.
3. What's in the Box
Verify that all components are present before beginning installation:
- Zurn AquaSense ZER6000AV-HET-TM Flush Valve Assembly
- 4 AA Batteries (included)
- Installation Hardware (e.g., vacuum breaker, tailpiece, spud coupling)
- User Manual (this document)
4. Product Overview
Familiarize yourself with the various views of the Zurn AquaSense ZER6000AV-HET-TM flush valve.
Figure 2: Front View
Figure 3: Back View
Figure 4: Side View (Sensor)
Figure 5: Side View
5. Installation Instructions
Professional installation is recommended. Ensure all necessary tools and materials are available before starting.
5.1 Pre-Installation Checks
- Confirm the water supply line is compatible with the flush valve's inlet connection type (Solvent Weld).
- Ensure the water closet (toilet) spud is compatible with the flush valve's outlet connection size (3 Inches).
- Verify that the rough-in dimensions match the requirements for the ZER6000AV-HET-TM model.
5.2 Step-by-Step Installation
- Turn off Water Supply: Locate the main water shut-off valve for the restroom or building and turn it off. Flush the toilet to relieve pressure.
- Remove Existing Flush Valve (if applicable): Carefully disconnect and remove the old flush valve assembly.
- Prepare Inlet and Outlet: Clean and prepare the water supply pipe and the toilet spud for connection.
- Assemble Flush Valve Components: Attach the tailpiece, vacuum breaker, and spud coupling to the main flush valve body as per the diagram provided with the product packaging.
- Connect to Water Supply: Securely connect the flush valve inlet to the water supply pipe.
- Connect to Toilet Spud: Attach the spud coupling to the toilet spud, ensuring a watertight seal.
- Install Batteries: Open the battery compartment (typically located on the top cover) and insert the 4 AA batteries, observing correct polarity. Close the compartment securely.
- Turn on Water Supply: Slowly open the main water shut-off valve. Check for leaks at all connections.
- Test Operation: Allow the sensor to detect presence and initiate a flush. Adjust the sensor range if necessary (refer to the operating instructions).
Figure 6: Flush Valve Installed in a Restroom Setting
Figure 7: Close-up of Installed Flush Valve
6. Operating Instructions
The Zurn AquaSense ZER6000AV-HET-TM flush valve operates automatically using an infrared (IR) sensor.
6.1 Sensor Operation
- The advanced IR sensor detects presence both forward and downward.
- After a user departs the sensor's detection zone, the valve will initiate a precisely timed 1.28 GPF flush.
- The sensor is designed to prevent false flushes and ensure optimal water usage.
6.2 Manual Override
In case of power failure or for manual flushing, a manual override button is typically located on the flush valve cover. Press this button firmly to initiate a flush.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your Zurn flush valve.
7.1 Cleaning
- Clean the exterior of the flush valve with a soft cloth and mild, non-abrasive cleaner.
- Do not use harsh chemicals, abrasive pads, or polishes as they can damage the polished chrome finish.
- Periodically wipe the sensor lens with a soft, damp cloth to ensure clear detection.
7.2 Battery Replacement
The flush valve is powered by 4 AA batteries, which typically last for 3 years under normal usage. A low battery indicator (if present) will signal when replacement is needed.
- Turn off Water Supply: Turn off the water supply to the flush valve.
- Access Battery Compartment: Locate and open the battery compartment cover, usually on the top or front of the sensor housing.
- Replace Batteries: Remove old batteries and insert new 4 AA alkaline batteries, ensuring correct polarity (+/-).
- Secure Compartment: Close the battery compartment cover securely.
- Restore Water Supply: Turn the water supply back on and test the flush valve operation.
8. Troubleshooting
Refer to the table below for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No flush when sensor is activated | Dead batteries; Water supply off; Sensor obstruction; Internal valve issue | Replace batteries; Check water supply valve; Clean sensor lens; Contact Zurn support |
| Continuous flushing | Sensor malfunction; Debris in valve; Diaphragm issue | Clean sensor; Inspect and clean valve components; Replace diaphragm; Contact Zurn support |
| Weak flush | Low water pressure; Partially closed stop valve; Clogged diaphragm filter | Check building water pressure; Ensure stop valve is fully open; Clean or replace diaphragm filter |
| Leaks from connections | Loose connections; Damaged gaskets/seals | Tighten connections; Replace gaskets/seals |
9. Specifications
Key technical specifications for the Zurn AquaSense ZER6000AV-HET-TM flush valve:
| Feature | Specification |
|---|---|
| Model Number | ZER6000AV-HET-TM |
| Flush Volume | 1.28 GPF (Gallons Per Flush) |
| Operation | EZ Gear-Driven, Sensor Activated |
| Material | Heavy-duty Brass Body |
| Finish | Polished Chrome |
| Inlet Connection Type | Solvent Weld |
| Outlet Connection Type | NPT |
| Outlet Connection Size | 3 Inches |
| Power Source | 4 AA Batteries (included) |
| Battery Life | Approximately 3 years |
| Durability | Ceramic gear-driven operation withstands over 500,000 cycles |
| Environmental Rating | IP65 rated construction |
| Certifications | ADA Compliant |
| Product Dimensions | 8.13 x 9.75 x 16.75 inches |
| Item Weight | 10.9 Pounds |
10. Warranty and Support
The Zurn AquaSense ZER6000AV-HET-TM Flush Valve comes with a 3-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service.
For warranty claims, technical assistance, or to purchase replacement parts, please contact Zurn Industries customer support:
- Website: www.zurn.com
- Customer Service: Refer to the Zurn website for current contact information (phone numbers, email).
Please have your model number (ZER6000AV-HET-TM) and date of purchase available when contacting support.
