Product Introduction; Intended Use; Pumped Liquids; Identification - Grundfos Comfort System Installation And Operating Instructions Manual

6. Product introduction

A Grundfos Comfort System hot-water
recirculation system brings hot water in an
instant to the hot-water faucets in your home.
Since the system utilizes the existing cold-water
return line in the home, no separate new return
line is required. No electrical power is required
under the sink.
The Grundfos Comfort System includes a
circulator pump that you install on the water
heater in your home, and a valve that you install
at the furthest faucet.
The direction of flow moves from the water
heater through the recirculation pump, through
the hot-water supply line, and then back to the
water heater through the existing cold-water
return line.
7
5
Fig. 10 Grundfos Comfort System
Pos. Description
1 Pump body
2 Faceplate
3 Flex hoses
4 Under-sink, bypass valve
5 Power cable
6 Timer
7 3/4" NPT outlet port

6.1 Intended use

WARNING
Fire and explosion
Death or serious personal injury
- Do not use the pump for
flammable, combustible or
explosive liquids such as diesel oil,
gasoline, or similar liquids.

6.2 Pumped liquids

Grundfos Comfort System is intended for indoor
residential potable drinking water use only and
is to be considered where there is no hot-water
return line available.
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The pump is lubricated and cooled by the liquid
1
being pumped. Therefore, the pumped liquid
must be allowed to circulate through the pump
2
while it is in operation.

6.3 Identification

The pump nameplate shows information about
3
the electrical requirements of the pump. Verify
that the pump will be supplied with the proper
voltage, phase, and frequency during operation.
The motor of the pump is designed to run on ±
10 % of the voltage shown on the nameplate.
4

6.4 Approvals

7. Servicing the product

Grundfos Comfort System is maintenance free.
No service is required.
WARNING
Electric shock
Death or serious personal injury
- For indoor use only.
- This pump has not been
investigated for use in swimming
pool or marine areas.
For indoor potable water use only.
ANSI/NSF61
ANSI/NSF372
Comfort Pump
Comfort Valve
UL/cUL
(Electrical Safety)
Comfort Pump
IAPMO (UPC)
Comfort Pump with
Comfort Valve (Comfort
System)
IAPMO (cUPC)
Comfort Valve
ANSI/NSF372
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