InstallatIon and operatIon InstructIons
Air-Over-Water Tanks
Models AW12H, AW30H,
AW42, AW42T, AW85, AW120
Rules For Safe Installation
and Operation
To prevent possible
serious or fatal injury and/or damage
to equipment, system pressure must
be less than 75 pounds per square
inch (PSI) under any circumstances.
Failure to follow this in struction can
result in tank blowup. Install relief
valve in system be tween pump and
tank capable of passing entire pump
output at 75 PSI.
Do not allow pump,
tank or piping system to freeze.
Freezing can severely damage
equipment and may lead to tank
explosion and serious injury.
Allowing tank to freeze voids warranty.
1. Follow local codes when installing
tank.
2. Test well water for purity before
using.
3. Disconnect power to pump and
re lease all pressure in system be fore
installing or servicing tank.
4. Drain all water from system before
performing any maintenance on
tank.
Installation
1. Use PTFE pipe thread sealant tape
on threaded pipe joints to tank.
DO NOT use pipe joint compound
on plastics, as it may damage the
plastic.
2. Install air volume control according
to instructions supplied with air
volume control.
3. Connect inlet and outlet pipes as
shown in illustration.
4. When installing tank in a system
having a submersible well pump, be
sure that orifices are installed and
operating correctly. See Sub mer-
sible pump owner’s manual for more
information.
AVC
Compression Fitting
Pump
Plastic
Tubing
Compression
Fitting
To
Service
Pressure
Gauge
Relief
Valve
Union
Control Box
(3 Wire Models Only)
Electrical
Disconnect
To House
Service
Gate Valve
Relief
Valve
Air Volume
Control
(FPE238-2)
Pressure
Gauge
From Well
Pressure Switch
Typical Jet Pump Installation
Typical Jet Installation with Horizontal Tank
Typical Submersible Installation
®
AVC
Regulator
Screw
Compression
Fitting
Pump
Plastic
Tubing
Compression Fitting
Pressure
Gauge
To
Service
Pressure
Switch
Relief
Valve
© 2012 Pentair, Inc. All Rights Reserved. S515 (11/08/12)
293 WRIGHT STREET, DELAVAN, WI 53115 WWW.PUMPS.COM
PH: 888-782-7483
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