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Thank you for your purchase. 

You are now the owner of a Watts Premier HOT WATER 

RECIRCULATION System. It has been carefully inspected and tested before shipment. It should 
give you long, efficient, trouble-free service. For maximum performance and reliability, please 
follow the simple instructions in this manual. 

NOTE: Please understand this is not an anti-scald device. You may have some warm water in 
your cold water line under the sink where the valve is installed. Once the cold water line is 
opened, the warm water  will dissipate in a very short time.

Table of Contents

Package Contents .....................................................................................
Operational Parameters...........................................................................
Pump Installation .....................................................................................
Sensor Valve Installation .........................................................................
Sensor Valve Operation ...........................................................................
Electrical ...................................................................................................
Timer Control Technical Data ...................................................................
Timer Operation .......................................................................................
Warranty ...................................................................................................

2
2
3
4
5
5
6
7
8

Examine the components carefully to make sure no damage has occurred to the 
pump. Care should be taken to ensure the pump is NOT dropped or mishandled; 
dropping will damage the pump.

Package Contains the following:

• 1- Hot  water recirculator pump with timer 
• 1-Sensor Valve
• 2- Valve mounting screws
• 2- 3/8” compression to 1/2" threaded flex hoses
• 2- adapters
• 2- rubber washers
• Installation and Operating Instructions

Package Contents

Operational Parameters

The maximum allowable water temperature is 150 degrees F  for  the circulator 

pump and timer.  

Page 2

Summary of Contents for 500800

Page 1: ...o the product s failure and possible damage to property Refer to enclosed warranty for operating parameters to ensure proper use with your water supply Manual Edition October 18 2007 INSTANT HOT WATER RECIRCULATING SYSTEM Pump and Comfort Valve CS VW MH26400 65GM ANSI NSF 61 DRINKING WATER SYSTEM COMPONENTS MAXIMUM USE TEMPERATURE 140 F Mfg by Grundfos Pumps U P C 12 Supply Line and Adapters ANSI ...

Page 2: ...able of Contents Package Contents Operational Parameters Pump Installation Sensor Valve Installation Sensor Valve Operation Electrical Timer Control Technical Data Timer Operation Warranty 2 2 3 4 5 5 6 7 8 Examine the components carefully to make sure no damage has occurred to the pump Care should be taken to ensure the pump is NOT dropped or mishandled dropping will damage the pump Package Conta...

Page 3: ...p is not touching the exhaust vent piping chimney of a gas or oil fired hot water heater 5 Connect the hot water line to the 3 4 NPT discharge of the pump Use pipe dope or Teflon tape to seal threads when connecting to a 3 4 female NPT connection If a gasketed flexible copper water heater connector is used pipe dope or Teflon tape is not required Water Heater Checklist Electric Water Heater Turn o...

Page 4: ...op valve 3 8 side and the Hot Water In port 1 2 side of the Sensor Valve see Picture 5 Connect the remaining 1 2 x 3 8 flex hose to the cold water stop valve 5 Open both the hot water and cold water stop valves 6 If desired Sensor Valve can be mounted to the wall with the mounting screws 1 2 or Other Stop Valve Installation 1 Close both the hot and cold stop valves below the sink see Picture 3 2 P...

Page 5: ...ing Interval 15 minute increment Switch Modes Timer ON Override OFF Override Protection Clear plastic cover for dust and moisture protection of the clock face Timer Technical Application The timer control is designed only for use with the specified WATTS INSTANT HOT WATER RECIRCULATING SYSTEM Installed indoors on hot water service systems The timer control is designed to turn the circulator on and...

Page 6: ...er on the inner dial Example for 10 30 AM Turn the minute hand clockwise until 10 30 AM is aligned with the triangle on the inner dial The hour and the minute dial will show exactly 10 30 Programming 24 Hour Timer manual switch position The 24 Hour dial has quarter hour division tabs plus AM PM indications Set the required ON OFF times on the programing ring by pushing the tabs away from or toward...

Page 7: ...y This warranty does not cover any equipment that is relocated from the site of its original installation This warranty does not cover any equipment that is installed or used outside the United States of America and Canada LIMITATIONS AND EXCLUSIONS WATTS WILL NOT BE RESPONSIBLE FOR ANY IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE WATTS WILL NOT BE RES...

Page 8: ...Phoenix AZ 85027 Fax 623 931 0191 Watts Premier Inc Phone 800 752 5582 www wattspremier com LUPTLW04 10 07 PRINTED IN USA ...

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