Valve Location; Valve Installation - Grundfos GRU-595916 Installation And Operating Instructions Manual

Comfort system hot water recirculation system
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8. Plug the line cord of pump into a 115V
Picture 3
outlet. Be sure to route the power cord
so that it does not touch the exhaust vent
piping of a gas or oil fired hot water heater.
9. Using the timer (see pg. 6), set the pump
to operate around your peak use times. (eg
30 minutes before the first shower until 15
minutes after last shower).

Valve Location

For the greatest effect, the valve should
be located at a faucet with the greatest
piping distance from the hot water heater.
If your home has a branched hot water line,
more than one valve may be necessary.

Valve Installation

Note: Do not use teflon tape or pipe dope on
the valve threads.
1. Close both the hot and cold water angle
stop valves below the sink. (see Picture #3)
Picture 4
2. Disconnect the risers. (see Picture #4)
3. Connect the 1/2"X1/2" flex hoses to the
ports on the valve marked "Hot Out" and
"Cold Out". (see Picture #5)
4. Connect the 1/2"X3/8" flex hoses to the
ports on the valve marked "Hot In" and
"Cold In". (see Picture #5)
Please note: By plumbing convention, the
hot water is on the left side and cold water
on the right, when looking at the sink. Your
piping may be different.
page 3

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