800M4-QT-FZ - Faucets Watts - Free user manual and instructions

Product Type	Pressure Vacuum Breaker Assembly
Brand	Watts
Model	800M4-QT-FZ
Category	Plumbing
Application	Backflow prevention for irrigation and industrial process water systems
Connection Dimensions	1/2 in to 2 in (1.3 to 5.1 cm)
Maximum Working Pressure	150 psi (10.3 bar)
Minimum Working Pressure	15 psi (103 kPa)
Operating Temperature	0.5 °C to 60 °C (33 °F to 140 °F)
Installation	12 in (30 cm) above the highest point of downstream piping, bonnet facing up
Key Features	Backflow prevention, freeze detection with alert (Smart Freeze Alert), BMS and Wi-Fi compatible via optional kit
Power Supply	Mechanical (water pressure); freeze sensor: electric (kit 88009515 sold separately)
Maintenance and Cleaning	Annual inspection and testing, regular cleaning of internal and external components, replacement of rubber parts every 5 years
Safety	Compliant with ASSE 1020, frost-free installation, integrated freeze detection
Spare Parts and Repairability	Internal parts replaceable without removing the valve; repair kits and price list available at watts.com
Warranty	Limited, 1 year from original shipment date
Applicable Standards	ASSE 1020, NFPA 13/25 for sprinkler systems
Options	FR version (antifreeze), insulated enclosure WattsBox, sensor connection kit 88009515

Frequently Asked Questions - 800M4-QT-FZ Watts

What is the role of the 800M4-QT-FZ assembly?

It is a pressure vacuum breaker that protects against water backflow and freeze damage in irrigation and industrial water systems.

How does the integrated freeze sensor work?

The sensor measures temperature and alerts personnel when freezing conditions approach. It can be connected to a BMS or Wi-Fi system via kit 88009515 to send Smart Freeze Alert notifications.

Where should I install this device?

Install it at least 12 inches (30 cm) above the highest point of downstream piping, with the bonnet facing up for easy access.

What is the recommended maintenance schedule?

Perform inspection and testing at least once a year, clean components regularly, and replace rubber parts every 5 years.

Can I install the device vertically?

No, the installation must be done with the bonnet side up. Vertical installation is not recommended.

What tools are needed for disassembly?

You will need a screwdriver for the bonnet screws and a wrench to remove the stem/bonnet assembly.

Is the freeze sensor mandatory?

No, the sensor is integrated but requires the optional connection kit 88009515 to be activated and communicate.

What are the pressure limits?

Maximum pressure: 150 psi (10.3 bar), minimum pressure: 15 psi (103 kPa).

How to winterize the device?

Close the main shut-off valve, open drains and test cocks, purge with compressed air, and leave handles at 45 degrees to prevent damage.

What does the warranty cover?

Limited one-year warranty against defects in material and workmanship. Does not cover damage due to freezing, improper installation, or adverse water conditions.

USER MANUAL 800M4-QT-FZ Watts

Installation, Maintenance, and Repair Manual

Series 800M4, LF800M4

Pressure Vacuum Breaker Assemblies

$$ 1 \frac {1}{2} " - 2" $$

WARNING

THINK SAFETY FIRST

Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can result in death, serious personal injury, property damage, or damage to the equipment.
Keep this Manual for future reference.

WARNING

Local building or plumbing codes may require modifications to the information provided. You are required to consult the local building and plumbing codes prior to installation. If the information provided here is not consistent with local building or plumbing codes, the local codes should be followed. This product must be installed by a licensed contractor in accordance with local codes and ordinances.

WARNING

Need for Periodic Inspection/Maintenance: This product must be tested periodically in compliance with local codes, but at least once per year or more as service conditions warrant. All products must be retested once maintenance has been performed. Corrosive water conditions and/or unauthorized adjustments or repair could render the product ineffective for the service intended. Regular checking and cleaning of the product's internal and external components helps assure maximum life and proper product function.

WARNING

Freeze sensor solely provides alerts about a possible freeze event and cannot prevent a freeze event from occurring. User action is required to prevent freeze conditions from causing product and/or property damage.

NOTICE

For Australia and New Zealand, line strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer.

If installed on a fire sprinkler system, all mechanical checks, such as alarm checks and backflow preventers, should be flow tested and inspected internally in accordance with NFPA 13 and NFPA 25.

Testing

For field testing procedure, refer to Watts installation sheets IS-TK-DL, IS-TK-9A, IS-TK-99D, and IS-TK-99E at www.watts.com.

For other repair kits and service parts, refer to the Backflow Prevention Products Repair Kits & Service Parts price list PL-RP-BPD at www.watts.com.

For technical assistance contact your local Watts representative.

800M4FR-FZ

Series 800M4 and LF800M4 antisiphon PVBs (FR and QT versions) are ideal for continuous pressure health hazard applications where exposure to sudden freezing conditions may occur, particularly in irrigation systems and industrial process water systems.

Both series include a sensor for use with SentryPlus Alert technology to monitor temperature and alert facility personnel when freeze conditions can cause damage to equipment. (The sensor is installed on the assembly exterior and does not alter assembly functions or certifications.) The monitoring system is compatible with BMS and irrigation management systems, allowing freeze alerts to be distributed according to the BMS or IMS application. When the monitoring system is Wi-Fi enabled, notifications can be issued through the Smart Freeze Alert cloud service.

NOTICE

An add-on connection kit (sold separately) is required to activate the freeze sensor. Without the connection kit, the sensor is a passive component that has no communication with any other device. (The kit can also be used to install an alternative standalone outdoor sensor or to retrofit existing installations. See "Add-on/Retrofit Sensor Connection Kit," for ordering details.)

NOTICE

Use of the freeze sensor and activation kit with FZ models does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of the PVB assembly.

Watts is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation.

Installation Guidelines

Pressure - Temperature

Working Temperature 33^ to 140^ (0.5^ to 60^)

Maximum Pressure 150 psi (10.3 bar)

Minimum Pressure 15 psi (103 kPa)

Requirements

• Install 12" above the highest point of downstream piping. (See Figure 1.)

NOTICE

Installation as stated above is essential for proper operation

• Install bonnet side up and allow access for testing/service.
  Install where discharge or spillage is not objectionable.
• Do not undersize supply or oversize the valve relative to demand.
• Do not install where backpressure can occur.
• Protect from freezing. For freeze protection, specify Model 800M4FR or LF800M4FR. Or, consider the WattsBox insulated enclosure. For more information, download ES-WB at www.watts.com.
• Follow ASSE Standard 1020 that the atmospheric vent valve remains open until the valve body pressure exceeds 1 lb. Until this pressure is reached, some amount of spillage occurs at the atmospheric vent. To minimize this leakage on start-up, close the downstream shutoff valve and open the inlet shut-off valve quickly.

Start-up Procedure

1. Close shutoff No. 2 (outlet).
2. Open shutoff No. 1 (inlet) until water discharges from the bonnet then quickly open to pressurize the valve.
3. Open shutoff No. 2.

Freeze Protection

Use the following procedure to purge the PVB assembly with pessurized air. (See Figure 2.)

1. Close the main shutoff valve.
2. Open upstream drain, test cocks and isolation ball valves to depressurize line.
3. Purge with pressurized line.
4. Leave test cocks and isolation ball valve handles in 45^ angle to drain ball valves and prevent casting damage.

Typical Installation

The TWS hydrant is usually included in the PVB installation to provide outside access to a building water supply for start-up, winterizing, and servicing of irrigation sprinkler systems. (See Figure 3.) The hydrant is connected to the PVB assembly and installed through the structure wall to connect to the water supply.

Figure 1

Figure 2

Figure 3

Servicing and Maintenance

Internal parts can be removed, repaired, or inspected without removing the valve from the piping.

Routine Service

1. In cold climates, open the test cocks to drain if operated only seasonally.
2. Replace rubber goods every 5 years.

Vacuum Breaker Disassembly

1. Shut off the supply pressure and drain the valve.
2. Remove the two hood screws and the hood.
3. Place a wrench on the parallel flats of the bonnet and stem assembly. Turn counterclockwise and remove.
4. Remove the vent assembly.
5. Press down on the spring retainer and disengage it from the retaining lugs. Then turn 90 degrees and remove.
6. Remove the spring retainer and spring. The large diameter of the spring is down on the guide assembly.
7. Remove the check disc holder and guide assembly.
8. Disassemble the check disc holder assembly.
9. Remove the seat (if required) by turning counterclockwise.

Vacuum Breaker Reassembly

Use the procedure above in reverse order to reassemble the vacuum breaker with new parts from the repair kit.

Add-on/Retrofit Sensor Connection Kit

Call customer service if you need assistance with technical details.

ORDERING CODE ADD-ON/RETROFIT KIT DESCRIPTION

88009515 FP-BF-WiFi/BMS/IMS-FZ

Freeze Sensor Connection Kit

Includes freeze sensor in mounting clip, standalone outdoor sensor, activation module, wire nuts (2), and power adapter. This kit adds a monitoring system to alert facility personnel when temperature nears and reaches the freezing point.

Limited Warranty: Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.

THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.

Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTY THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

USA:T:978)689-6066Watts.com

Canada: T: [phone] Watts.ca

Latin America: T: (52) 55-4122-0138 • Watts.com

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