Installation and Operation
Manual
Hot Water Recirculation System
Model 500800
IOM-WQ-500800
Table of Contents
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Before Installation
Contents of Instant Hot Water Recirculating System . . . . . . . . . . 2
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operational Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation
Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3/8" Sensor Valve Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1/2" Sensor Valve Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Check Sensor Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Parallel Sensor Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation
Setting Up The Timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Manual Switch Mode Of Operations . . . . . . . . . . . . . . . . . . . . . . 5
Timer Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Technical and Warranty Information
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
WARNING
!
Read this Manual BEFORE proceeding with
installation.
Failure to read and follow attached instructions or
operating parameters may lead to the product’s
failure and possible damage to property. Refer to
enclosed warranty for operating parameters to
ensure proper use with your water supply.
Keep this Manual for future reference.
Pump and Comfort Valve CS VW
Drinking Water System Components
Maximum use temperature: 140°F
Mfg. by Grundfos Pumps
12" Supply Line and Adapters
MH26400 65GM
ANSI/NSF 61
ANSI/NSF 61
STD. 61
LISTED
This Hot Water Recirculation System does not work with
Tankless water heaters.
For Indoor Use Only.
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.
WARNING
!
