resideo AM-1 Series Proportional Thermostatic Mixing and Diverting Valve Installation Guide

resideo AM-1 Series Proportional Thermostatic Mixing and Diverting Valve

FAQs

• Q: Can I use the thermostrip multiple times?
  • A: No, the thermostrip is for one-time use only for the initial system temperature setting. Contact your distributor for a replacement if needed.

PRODUCT OVERVIEW

APPLICATION

The AM-1 Series family of quality valves in a variety of temperature ranges and connections, for master mixing or diverting applications.

SPECIFICATIONS

• Media Temperature Ranges:
  • Cold Inlet: 39°F-80°F (4°C-27°C)
  • Hot Inlet: 120°F-180°F (49°C-82°C)
• Mixed Outlet:
  • C Model: 70°F-120°F (21°C-49°C)
  • Standard Model: 70°F-145°F (21°C-63°C)
  • Connections: Straight-through design (HOT and COLD at the same level).
  • Construction: Nickel-plated brass construction. EPDM o-rings. Made in USA.
  • Lead-Free Plumbing Code Compliance: The wettable surfaces of lead-free models contain less than .25% of lead by the weighted average
  • Operating Pressure: 150 psi (1034 kPa) maximum.
  • Patent Information: U.S. Patent No. 6,079,625.
  • Temperature Gauge Adapter: Lead-free brass, EPDM O-ring

INSTALLATION

IMPORTANT: Mounting must comply with all local codes.

• NOTE TO INSTALLER: This product should be installed by a qualified individual, per local codes and ordinances. It is the responsibility of the installer to properly select, install, and adjust these devices as specified in these instructions.
• For installations that require compliance with Building/Mechanical/Plumbing Codes, the appropriate AM-1 Series valve must be chosen and installed, and the discharge temperature set and locked according to these instructions.
• AM-1 “C” Series models with a temperature range, of 70°F– 120°F (21°C–49°C) and “Standard” models with a temperature range of 70°F–145°F (21°C–63°C) are ASSE® 1017 (point of source application) certified, and CSA®a and IAPMO® listed.
• These models shall be used to supply water to tubs, showers, bathing facilities, and other outlets. These valves should be installed where they will be accessible for cleaning, servicing, or adjustment.

ASSE 1017 Applications—Point of Source

• These AM-1 Series models can be installed in any position consistent with the intended use. For domestic hot water supply, the valve must be installed as shown in Fig. 1.
• There shall be no shut-off valves installed between the cold water line and the cold water connection on the AM-1 Series valve.
• Check valves shall be installed as indicated for NPT models; all AM-1 models with union fittings are supplied with integral check valves on both the hot and cold ports.
• A cold water service valve may be installed, as indicated, between the cold water supply line to the distribution system and the cold water line supplying both the water heater and the AM-1 Series valve.
  • a -UCPVC and -UPEX models are not CSA listed.

Installation of Union Sweat, CPVC, Union Press, Push Connect, and PEX Connections

• Union sweat connections, if used, should be soldered before assembly to the valve, or without the sealing gasket or optional check valve present. After the joint has cooled, the sealing gasket and/or check valves may be installed.
• CPVC fittings are limited to a system maximum temperature of 180° F (82° C) and 100 psi (689 kPa).
• PEX fitting and crimp ring (provided by the Installer) are designed to meet ASTM F1807 requirements.
• PEX tubing used with PEX fittings must meet ASTM F876 requirements.
• Press connections, use press tools and installation practices compatible with Viega systems.
• Push connect fittings can be used with both copper and PEX (plastic).

Installation of Temperature Gauge Adapter

IMPORTANT: Union sweat connections must be soldered before the thermowell with O-ring and sealing gasket are installed. Install the thermowell with O-ring and sealing gasket after the joint has cooled.

1. Install the thermowell with an O-ring to the thermometer adapter body.
2. Tighten to 75 LB-IN ± 10 LB-IN. DO NOT OVERTIGHTEN.
3. Install the thermometer into the thermowell until seated and tighten the set screw to secure it in place.

VALVE ADJUSTMENT

To adjust the temperature setting of the mixing valve, attach the thermostat (supplied with the valve) to the piping connected to the mixing port of the valve. Loosen the handwheel screw, lift the handwheel, and turn to the desired temperature as indicated on the thermostrip. Reposition the hand wheel and retighten the screw.

Temperature Setting Procedure

• It is possible to limit the temperature range.

To use this feature:

Thermostrip Installation

Clean the pipe and firmly apply the thermostat on the mix outlet of the valve. Flow water and adjust the mixed outlet temperature for the desired setting range. Actual mixed water temperature is indicated in green with 2° F (1° C) increments. Blue means slightly lower and brown means slightly higher.

WARNING: Water Temperature above 120°F (49° C) can cause serious injury. Mixing valve temperature setting should be done by a licensed contractor per local code requirement. To ensure correct temperature control, use a water thermometer at the faucet outlet. The thermostat is ONE TIME USE ONLY for the initial system temperature setting. Check the expiration date printed on the temperature strip to ensure temperature reading accuracy. If necessary, contact your Resideo distributor to obtain a replacement thermostat, part number TS205-064. Thermostrip is only included in models without the temperature gauge.

Post Installation Procedure

1. Write the temperature setting on the CAUTION label and sign in the space provided.
2. Attach the CAUTION label to the AM-1 valve.
3. Explain the CAUTION label to the owner.
4. Deposit this instruction sheet with the owner.

OPERATION

• The AM-1 series valve provides for automatic operation through the use of a thermostatic element in the product.
• The element will control the mixing of the hot and cold supply to provide mixed-tempered water to connected fixtures.
• This provides constant water temperature under different working conditions.

MAINTENANCE PROCEDURES

• Hard water conditions may result in scale deposits, causing the binding of internal parts in extreme cases.
• Cleaning the internal parts will usually restore the valve to proper operating conditions.
• In some cases, it may be necessary to replace the lower assembly.

To clean and/or replace the lower assembly, shut off the water and:

1. With a screwdriver, remove the screw and handwheel.
2. Loosen the upper nut (do not remove) to allow engaging an adjustable wrench on the lower nut. Unscrew the lower nut (counterclockwise). This removes top assembly.
3. Brass top assembly will pop up. Remove the lower assembly, diffuser, and spring.
4. Carefully remove any scaling (calcium deposit) or foreign particles from the valve seat and other internal parts. Use vinegar to remove calcium. Soak parts until calcium becomes soft and can be scrubbed and washed off. Do not use solvents or scratch metallic / Teflon® coated surfaces.
5. Replace the cleaned spring, diffuser, and lower assembly following the instructions below, or use a new replacement kit assembly. For the correct kit number, see Table 1.

Install spring, diffuser, and lower assembly:

1. Insert spring onto the diffuser.
2. Insert the diffuser with the spring end first into the body.
3. Fit the valve top assembly into the lower assembly and insert it into the valve.
4. Tighten the lower nut.
5. Reposition the handwheel and insert the screw. Turn the handwheel to the desired temperature setting.

Table 1. AM-1 Series Replacement Kits.

• ASSE® is a registered trademark of the American Society of Sanitary Engineering.
• CSA® is a registered trademark of the Canadian Standards Association.
• IAPMO® is a registered trademark of the International Association of Plumbing and Mechanical Officials.
• ASTM® is a registered trademark of the American Society for Testing and Materials.
• Teflon® is a registered trademark of E.I. du Pont de Nemours and Company.

CONTACT INFORMATION

• Resideo Technologies, Inc.
• 1985 Douglas Drive North, Golden Valley, MN 55422
• 1-800-468-1502
• 62-3075EFS—13 SA Rev. 01-24
• www.resideo.com
• © 2024 Resideo Technologies, Inc. All rights reserved.
• This product is manufactured by Resideo Technologies, Inc. and its affiliates.

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