Cash Acme HG145 3/8 Inch Thermostatic Mixing Valve Instruction Manual

1. Product Overview

The Cash Acme HG145 Thermostatic Mixing Valve is a point-of-use device engineered to assist in the prevention of scalding by mixing hot and cold water to deliver tempered water at a constant temperature. This valve also features a safety mechanism that reduces the outlet flow to a trickle in the event of cold water supply failure, enhancing user safety. It is constructed from durable lead-free brass for long-lasting reliability.

The HG145 is compatible with various piping materials including SharkBite copper tubing, CTS, CPVC, SDR-9 HDPE, and PEX fittings. Its innovative design facilitates quick and easy installation without requiring specialized tools, crimping, glue, or soldering.

Image 1.1: The Cash Acme HG145 Thermostatic Mixing Valve, a brass plumbing fitting with compression connections and integral checks.

2. Safety Information

This thermostatic mixing valve is designed to provide anti-scald protection by maintaining a consistent water temperature. It is crucial to follow all installation instructions to ensure proper function and safety. In the event of a cold water supply interruption, the valve is designed to significantly reduce hot water flow to prevent scalding.

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Always handle with care and wash hands after contact.

3. Setup and Installation

Proper installation is essential for the safe and effective operation of your Cash Acme HG145 Thermostatic Mixing Valve. Please follow these steps carefully:

1. Shut Off Water Supply: Before beginning any work, locate and shut off both the hot and cold water stop valves to the fixture where the mixing valve will be installed.
2. Remove Existing Supply Lines: Disconnect and remove any existing hot and cold water supply lines from the stop valves and the faucet.
3. Mount Valve Bracket: Secure the provided valve bracket in a location that allows easy access to all connection points for the mixing valve. The valve can be installed under or mounted behind a sink.
4. Connect Hot and Cold Lines to Mixing Valve: Connect the hot and cold water supply lines from the stop valves to the appropriate inlets on the mixing valve. The HG145 features 3/8 inch connections suitable for flexible hose connectors or 3/8 inch tube compression fittings. Ensure all connections are tightened securely to prevent leaks.
5. Connect Cold Water Bypass: Connect a supply line from the cold water bypass tee on the mixing valve to the cold water inlet of the faucet. Tighten this connection.
6. Connect Tempered Water to Faucet: Connect a supply line from the tempered water outlet of the mixing valve to the hot water inlet of the faucet. Tighten this connection.
7. Restore Water Supply and Check for Leaks: Once all connections are made, slowly turn on the hot and cold water supply stop valves. Carefully inspect all connections for any signs of leaks. Tighten any loose fittings as necessary.

4. Operating Instructions

The Cash Acme HG145 Thermostatic Mixing Valve is designed for automatic operation. It continuously mixes hot and cold water to deliver a consistent, tempered water temperature at the faucet. The outlet temperature range is factory set at 120 degrees F (49 degrees C) and is adjustable anywhere from 85 degrees F (29 degrees C) to 130 degrees F (54 degrees C).

To adjust the temperature, carefully rotate the white adjustment knob on the valve. Turn clockwise for cooler water and counter-clockwise for warmer water. Always test the water temperature with a thermometer after adjustment to ensure it meets desired safety and comfort levels.

5. Maintenance

The HG145 Thermostatic Mixing Valve requires minimal maintenance. Regular inspection is recommended to ensure optimal performance and prevent potential issues:

• Periodic Inspection: Annually inspect the valve and all connections for any signs of leaks, corrosion, or damage.
• Temperature Verification: Periodically verify the outlet water temperature with a thermometer to ensure it remains within the desired safe range.
• Cleaning: If water quality issues are suspected, the internal components may require cleaning by a qualified plumber.

Do not attempt to disassemble the valve unless you are a qualified professional. Improper disassembly or reassembly can lead to leaks or malfunction.

6. Troubleshooting

If you experience issues with your thermostatic mixing valve, consider the following common troubleshooting steps:

• No Water Flow or Reduced Flow: Check if the hot and cold water supply stop valves are fully open. Ensure there are no kinks or obstructions in the supply lines.
• Water Temperature Too Hot or Too Cold: Verify the temperature setting on the mixing valve. Adjust the knob as described in the Operating Instructions. If the issue persists, there might be an imbalance in hot or cold water pressure, or the thermostatic element may require inspection by a professional.
• Leaks at Connections: Ensure all compression fittings and threaded connections are properly tightened. Do not overtighten, as this can damage the fittings. If leaks persist, check for damaged washers or O-rings.
• Cold Water Supply Failure Protection: If the cold water supply fails, the valve is designed to reduce hot water flow to a trickle. This is a safety feature, not a malfunction. Restore cold water supply for normal operation.

For persistent issues or complex problems, it is recommended to contact a qualified plumbing professional.

7. Specifications

8. Warranty and Support

The Cash Acme HG145 Thermostatic Mixing Valve comes with a 1-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 support, or further assistance, please contact Cash Acme customer service or visit the official Cash Acme website. Keep your proof of purchase for any warranty claims.