Power-flo PFWRC67S1U User manual

ISP No: PFCirc67s1u - 1/2021
OWNER’S MANUAL
PFWRC67S1U
Wet Rotor Circulator Pump
For Indoor Use Only
Maintenance Free
“Power-Flo Pumps & Systems,
Your Power-Ful partner
for all your pumping needs”
NSF
®
NSF Certied
to NSF372
E474960
877-24PUMPS • www.poweropumps.com

2
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
General Safety Information
® Power-Flo is a registered trademark of Power-Flo
Technologies Inc. Alteration Rights Reserved. 1/16, 10/2020, 1/2021
Before installation, read the following
instructions carefully. Failure to follow
instruction and Safety information could cause
serious bodily injury, death and/or property
damage. Each Power-Flo pump is individually
factory tested to insure proper performance.
Closely following these instructions will
eliminate potential operating problems,
assuring years of trouble-free service.
Installation, wiring,
and junction
connections must be in accordance with
the National Electric Code and all applicable
state and local codes. Requirements may vary
depending on usage and location.
Installation and
servicing is to be
conducted by qualied personnel only.
This pump is not
intended for use in
swimming pools, spa areas or water
installations where human contact
with pumped uid.
Risk of electric shock.
To reduce risk of
electric shock, always disconnect
pump from power source before
handling. Lock out power & tag.
In the event the
retaining screws have
been pulled out of the
housing, DO NOT replace them. Use
of any other screw may short out
the stator windings, creating a risk of
electrical shock.
The addition of
petroleum based uids
or certain chemical additives to the system
voids the warranty.
Pumps build up heat
and pressure during
operation. Allow time
for pumps to cool
before handling or
servicing.
Features:
These Power-Flo Circulator Pumps are
designed to be installed in residential potable
domestic hot water systems to provide
recirculation (in a RETRO-FIT application where
NO dedicated recirculation pipe has been
installed) of domestic hot water resulting in
“instant” hot water at xtures throughout the
house. This unit is designed to install ON TOP
OF THE WATER HEATER on hot water supply
side and will connect directly onto the supply
nipple on top of the heater. This pump will
come equipped with a standard terminal box
to allow for connection to direct 115 V AC
AND will come with a 6 Ft. long soft jacketed 3
prong electric cord and strain relief connection
for “outlet plug in” installations. NOTE: This
unit MUST be installed with the Power-Flo
Pumps “Retro-Fit Valve” (PFRFV)
MOTOR: 2-pole, 3600rpm, single phase,
PSC with Thermal protection
LIQUID TEMPERATURE: 32°F - 230°F
MAX. SYSTEM PRESSURE: 145 PSI
INSULATION: Class H
VOLUTE: Stainless Steel
CONNECTION: 3/4” M x 3/4” FNPT
POWER CORD: 6 Foot with 3 prong plug
ACCESSORIES: PFFP- Fitting Pack,
PFDT - Digital Timer, PFSOA - Snap-On
Aquastat, PFRFV - Retro-Fit Valve
WARRANTY: 3 year
Receiving Inspection
Upon receiving the pump, it should be
inspected for damage or shortages. If
damage has occurred, le a claim
immediately with the company that delivered
the pump. Care should be taken to ensure
the pump is NOT dropped or mishandled,
dropping will damage the pump. If the
manual is removed from the packaging, do
not lose or misplace.
PFWRC67S1U Wet Rotor Circulator Pumps
WARNING:
CANCER AND REPRODUCTIVE HARM-
WWW.P65WARNINGS.CA.GOV

3
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Dimensions
PF WRC 21 20 Volute Material
C, B, S
Motor Voltage
1 or 2
Connection Type
F, S, U
Power-Flo Wet Rotor Ciculator Shut O
Head (ft)
Max Flow
(Gal)
C = Cast Iron
B = Lead Free Bronze
S = Stainless Steel
1 = 115 V
2 = 230V/1P
F = Flanged
S = Copper Sweat
U = Union
EXAMPLE: PFWRC2120C1F - Power-Flo Pumps - Wet Rotor Circulator - 21” Shut O Head - 20GPM Max Flow - Cast Iron Volute - 115 Volt, Flanged Connection.
MODEL/PART
NUMBER
VOLUTE
Material
VOLTS
PHASE AMPS WAT TS SYSTEM TYPE CAPACITOR WT. lbs
PFWRC67S1U Stainless 115/1 0.22 25 Open 2mfd / 450V 5
Wet Rotor Circulator Pumps PFWRC67S1U

4
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFWRC67S1U Wet Rotor Circulator Pumps
Installation
Pre-Installation
The following checks should be made before
beginning installation.
A.) Uses: These pumps are generally
designed to circulate water from 32°F to
230°F and up to a maximum pressure of 145
psi.
Open Systems: These series pumps with
stainless steel or bronze pump housings are
designed to pump water compatible with
their construction and can be used in both
open and closed systems.
B.) Maximum Water Temperature: The
maximum allowable water temperature is
determined by the ambient or surrounding
air temperature. (See Figure 1)
C.) Inlet Pressure Requirements
The amount of pressure required at the inlet
of the pump is a function of the temperature
of the water as shown in the chart.
Inlet Pressure Requirements
Water (°F) 190 165 140
Required Inlet Pressure (ft) 5 4.5 3
(psi) 2.2 1.9 1.3
In a pressurized system, the required inlet
pressure is the minimum allowable system
pressure. In a system open to the atmosphere,
the required inlet pressure is the minimum
distance the pump must be located below
the lowest possible water level of the water
source.
Installation
Position of terminal box: Proper installation
of the pump will have the terminal box
located to one side of the pump with the
conduit entry up (See Figure 2). This is so
condensation does not run down the cord.
Pump Mounting
The pump mounts on top of the water heater
on hot water supply side and will connect
directly onto the supply nipple on top of the
heater. Arrows on the pump chamber indicate
direction of ow through the pump. The
pump must be mounted vertically, free of
stresses from piping system with the pump
shaft in the horizontal position.
NEVER install the pump with the shaft
vertical or where the shaft falls below the
horizontal plane.
IMPORTANT! - This pumps MUST be installed
with Power-Flo Pumps “Retro-Fit Valve”
model PFRFV. See Retro-t Valve’s manual
for installation.
t1 °F 35.6 104 140 176 194 212 221 230
t2 °F 32 104 140 176 158 140 131 93
Figure 1
t1 max: + 230°F
t2 min: + 35.6°F

5
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Wet Rotor Circulator Pumps PFWRC67S1U
Typical Retro-Fit Installation
Figure 2
Hot Water To
Faucet
Flow Rate
Adjustment
Hot Water
Supply
Cold Water To Faucet
Cold Water Supply
Quick and easy under the xture installation. Furthest point from water heater
Optional: Snap-on Aquastat PFSOA
Retro-Fit Valve PFRFV
Optional: 7-Day Digital
Programmable Timer -
PFDT
PFWRC67S1U
Hot Water
Heater
Figure 2
Cold Water
Hot Water

6
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Installation & Operation
Electrical:
This pump will come equipped with a 6 Ft.
long soft jacketed 3 prong electric cord and
strain relief connection for “outlet plug in”
installations. The pump must be within 6 foot
of a 115 volt receptacle.
Operating voltage and other electrical
data can be found on the nameplate. All
models have thermal protection and require
no additional external protection. The
temperature of the winding will never exceed
allowable limits, even in locked rotor.
Installation Requirements
1. Thoroughly clean and ush the system prior
to pump installation.
2. Ensure that water does not enter the
terminal box during the installation.
3. (Open System) Install the pump in the
supply line; the suction side of the pump
should be ooded with water. Ensure that the
static head requirement from chart is achieved.
4. DO NOT START THE PUMP UNTIL THE
SYSTEM HAS BEEN FILLED.
Start-Up
Do not use the pump to vent the system. Do
not start the pump before lling the system.
NEVER OPERATE THE PUMP DRY.
Operation
These circulating pumps will operate quietly
and eciently and provide years of service if
sized for correct performance and installed
properly. Under NO circumstances should the
pump be operated without water circulation
or without the minimum required inlet
pressure for prolonged periods of time. This
could result in motor and pump damage.
Failure To Operate
When the pump is rst started, the shaft may
rotate slowly until water has fully penetrated
the bearings. If the pump does not run, the
shaft can be rotated manually. To accomplish
this, switch o the electrical supply and close
the isolation valves on each side of the pump.
Remove the indicator plug in the middle of the
nameplate. Insert a small at blade screwdriver
into the end of the shaft and gently turn until
the shaft moves freely. Replace and tighten the
plug. Open the isolation valves and wait 2 to
3 minutes for the system pressure to equalize
before starting the pump.
PFWRC67S1U Wet Rotor Circulator Pumps
PFRFV - Retro-Fit Valve
The thermostatic Lead-Free Bronze bypass valve is installed under the
sink xture furthest from the hot water heater. The valve reacts to the
decreasing temperature in the hot water supply piping and “opens” to
allow the ow back through the cold water piping (essentially using
the cold water piping as the return line) and providing “instant” hot
water at the xtures.
NOTE: The Retro-Fit Valve (PFRFV) MUST be installed with
Power-Flo Pumps Model PFWRC67S1U circulator pump.

7
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Trouble Shooting
Symptom Possible Cause(s) Corrective Action
Pump won’t start
Power supply is not connected Check the fuse/circuit breaker or
the power connection
Capacitor is damaged Change capacitor
Motor blockage Check that rotor shaft rotates
freely.
There is noise in the
system
The pump ow is too high Reselect pump
Air in the system Vent the system
The pump head is too high Reselect pump
Noise in the pump Air in the pump Vent the pump
Cavitation due to insucient
inlet pressure
Increase system pressure within
permissible range
Wet Rotor Circulator Pumps PFWRC67S1U
OPTIONAL: PFDT - 7-Day Digital Timer
The digital, programmable timer allows for control of the
circulator (on / o) at designated times (up to four custom
settings per 24 hour period) for up to 7 days (similar to a
programmable thermostat). The timer is plugged into a standard
wall outlet and the circulator pump is then plugged into the
timer allowing for time control of the pump. This unit has an
internal battery backup which will, in the event of loss of AC
power, power the unit and save / maintain program settings
(battery will last for 48 hours before needing to be recharged).
NOTE: The Digital timer (PFDT) and Aquastat (PFSOA)
can ALSO be used together, in tandem to allow for BOTH
temperature AND time control.
OPTIONAL: PFSOA - Snap on Aquastat
The Aquastat simply “clips” onto any material 1/2” ID or 3/4” ID
piping. It then plugs into a standard wall outlet. You would then
plug in the power cord for the circulator into the aquastat plug
and it will turn the circulator on and o automatically at xed
set points (ON 98°F and OFF at 114°F) allowing for temperature
control of pump.
NOTE: The Digital Timer (PFDT) and Aquastat (PFSOA)
can ALSO be used together, in tandem to allow for BOTH
temperature AND time control.

8
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
3 YEAR WARRANTY
Manufacturer warrants, to the purchaser and subsequent owner during
the warranty period, new pump product to be free from defects in material
and workmanship under normal use and service, when properly used and
maintained, for a period of 3 years from date of sale. The date of sale shall be
determined by a dated sales receipt noting the model and serial number of
the pump. The dated sales receipt must accompany the returned pump if the
date of the return is more than 3 years from the date of manufacturer. Product
will be repaired, replaced or remanufactured at Manufacturer’s option. No
allowance will be made for shipping charges, damages, labor or other charges
that may occur due to product failure, repair or replacement. This warranty
does not apply to and there shall be no warranty for any material or product
that has been disassembled without prior approval of Manufacturer, subjected
to misuse, misapplication, neglect, alteration, accident or act of God; that has
not been installed, operated or maintained in accordance with Manufacturer’s
installation instructions; that has been exposed to outside substances
including but not limited to the following: sand, gravel, cement, mud, tar,
hydrocarbons, hydrocarbon derivatives (oil, gasoline, solvents, etc.), or other
abrasive or corrosive substances, wash towels or feminine sanitary products,
etc. in all pumping applications. The warranty set out in the paragraph above
is in lieu of all other warranties expressed or implied; and we do not authorize
any representative or other person to assume for us any other liability in
connection with our products.
Contact Manufacturer at: 1-877-24PUMPS or www.poweropumps.
com, Attention: Customer Service Department, to obtain any needed
repair or replacement of part(s) or additional information pertaining to
our warranty. MANUFACTURER EXPRESSLY DISCLAIMS LIABILITY FOR
SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES OR BREACH OF
EXPRESSED OR IMPLIED WARRANTY; AND ANY IMPLIED WARRANTY OF
FITNESS FOR A PARTICULAR PURPOSE AND OF MERCHANTABILITY SHALL
BE LIMITED TO THE DURATION OF THE EXPRESSED WARRANTY.
Some states do not allow limitations on the duration of an implied warranty,
so the above limitation may not apply to you. Some states do not allow the
exclusion or limitation of incidental or con sequential damages, so the above
limitation or exclusion may not apply to you. This warranty gives you specic
legal rights and you may also have other rights which vary from state to state.
PFWRC67S1U Wet Rotor Circulator Pumps