Power-flo PFEXT Manuale utente
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
ISP No. pfext ISP - 1/2021
Part
Number
Capacity Connection Max
Temp
Pre-
Charge
Max Working
Pressure
Wt.
lbs
PFEXT2H 2 gal 1/2” NPT 240° F 12 PSI 100 PSI 5
PFEXT4H 4 gal 1/2” NPT 240° F 12 PSI 100 PSI 9
PFEXT8H 8 gal 1/2” NPT 240° F 12 PSI 100 PSI 14
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
INSTALLER: LEAVE THIS MANUAL WITH THE END USER
READ CAREFULLY THE PRODUCT
INSTALLATION, OPERATING AND
MAINTENANCE INSTRUCTIONS. FAILURE TO FOLLOW THE
INSTRUCTIONS AND WARNINGS IN THE MANUAL MAY
RESULT IN SERIOUS OR FATAL INJURY AND/OR PROPERTY
DAMAGE, AND WILL VOID THE PRODUCT WARRANTY.
THIS PRODUCT MUST BE INSTALLED BY A QUALIFIED
PROFESSIONAL. FOLLOW ALL APPLICABLE LOCAL AND
STATE CODES AND REGULATIONS, IN THE ABSENCE OF
SUCH CODES, FOLLOW THE CURRENT EDITIONS OF THE
NATIONAL PLUMBING CODE AND NATIONAL ELECTRIC
CODE, AS APPLICABLE.
This is the safety alter symbol. It is used to alert you
to potential personal injury and other hazards. Obey
all safety messages that follow this symbol to reduce
the risk possible injury as well as property damage.
NOTE: Inspect for shipping damage and notify carrier or store
where purchased immediately if damage is present. To avoid
risk of personal injury and property damage, if the product
appears to be malfunctioning or shows signs of corrosion,
call a qualied professional immediately. Use proper safety
equipment when installing.
FAILURE TO PROPERLY SEAL VALVE CAP
WILL RESULT IN LOSS OF PRECHARGE
CAUSING PRODUCT TO FAIL.
This product, like most products under
pressure, may over time corrode, weaken,
burst or explode, causing serious or fatal personal injury,
leaking or ooding and/or property damage. To minimize risk,
a licensed professional must install and periodically inspect and
services the product. A drop pan connected to an adequate
drain must be installed if leaking or owing could cause
property damage. Do not locate in an area where leaking could
cause property damage to the area adjacent to the appliance
or to lower oors of the structure.
EXPLOSION OF RUPTURE HAZARD. A relief valve must
be installed to prevent pressure in excess of local code
requirement or maximum working pressure designated in the
Product Manual, whichever is less. Do not expose product to
freezing temperatures or temperatures in excel of 240°F. Do
not adjust the pre-charge or re-charge this product except for
any adjustments at the time of the initial installation, especially
if product is corroded, damaged or with diminished integrity.
Adjustments to pre-charge must be done at ambient
temperature only. Failure to properly size the product or follow
these instructions may result in excess strain on the system
and may lead to product failure, serious or fatal personal injury,
leakage, and/or property damage.
Mount vertically only. Do not mount on
dead-end pipe.
FOR USE IN CLOSED HYDRONIC SYSTEMS ONLY: Do not
install for domestic water systems, or in open heating systems.
Corrosion and tank failure may result.
Pre-Installation
1. Visually inspect the tank for any damage.
2. Adjust pre-charge to equal system ll pressure.
3. Replace and tighten plastic cap on air tting.
Installation
1. Drain the boiler system or isolate the area where the tank will
be installed.
2. Install the tank on the supply side of the boiler, on the
suction –side of the heating circulator(s) (see Figure 1).
3. Once the tank is installed, re-pressurize the system and check
for leaks. Repair as necessary.
4. Restart the boiler system and check for relief valve discharge.
If the relief valve drips, the tank may be improperly charged or
undersized.
5. The tank is now operational and will absorb expanded water
during boiler operation.
PFEXT - Power-Flo Expansion Tanks
WARNING:
CANCER AND REPRODUCTIVE HARM-
WWW.P65WARNINGS.CA.GOV
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
3 YEAR WARRANTY
PFEXT - Power-Flo Expansion Tanks
Maintenance
1. A professional plumber should check the complete heating
system, including the tank, yearly and more frequently as the
system ages.
Operation
1. The tank is installed on the supply-side of the boiler system.
Its sealed-in air precharge prevents water from entering the
tank until the system pressure begins the rise.
2. As the water temperature rises, water enters the tank.
3. As the system cools, the diaphragm is forced downward.
Water is expelled from the tank, back into the heating system.
NOTES
1. Although the tank does not have to be installed at the base
of an air purger, this installation is recommended to reduce
air in the system and provide a compact installation. Some
method of air elimination is required to ensure an oxygen-free
system.
2. The tank must not be placed overhead in the oor joist
space. When replacing a plain-steel tank, this tank should be
relocated per Figure 1.
3. DO not place the tank on a dead-end pipe. Air can collect in
the tank, causing internal corrosion and possible leakage
® Power-Flo is a registered trademark of Power-Flo Technologies Inc.
Other brand and product names are trademarks or registered trademarks of their
respective holders.
Figure 1
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.poweropumps.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 specic legal rights and you may also have other rights which vary from state to state.
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