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Appendix
Grundfos Comfort System
Valve should be installed at a faucet with the longest piping distance from the hot water heater.
VRS (No Pump inside of unit)
• Grundfos Comfort Valve (With external pump installation)
1 2 34
ON
1 2 3
ON
Hot water
A B C
Cold water
Grundfos
Comfort
Valve
Dip Switch Setting:
No Dip S/W setting required
(Normal Mode)
VRP (Pump included unit)
• Grundfos Comfort Valve (Without external pump installation)
Hot water
A B C D
Cold water
Grundfos
Comfort
Valve
1 2 34
ON
1 2 3
ON
Dip Switch Setting:
Flip the Dip S/W #3 in the 4-switch
panel (External Re-circulation Mode)
• Grundfos Comfort Valve (With external pump installation)
1 2 34
ON
1 2 3
ON
Hot water
A B C D
Cold water
Grundfos
Comfort
Valve
Dip Switch Setting:
No Dip S/W setting required
(Normal Mode)
Warning
You may find some warm water in the cold water line at the sink where the valve is installed.
Once the cold water line is opened, the water water will dissipate in a very short time.
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