Pentair SSJ Series Owner's Manual page 6

Installation
Standard Tank
Air Volume
Control
(AVC)
1" Discharge
Relief Valve
AVC Tubing
Well Seal
Figure 4: Pump With Standard Tank
Pre-Charged
Pressure Tank
1" Discharge
Figure 5: Pump With Pre-charged Tank
Check Pressure With
Figure 6: Checking Tank Pre-charge
DISCHARGE PIPE SIZES
1. If increasing discharge pipe size, install reducer in pump discharge port.
Do not increase pipe size by stages.
2. When the pump is set away from the points of water use, the discharge
pipe size should be increased to reduce pressure losses caused by
friction.
Pressure
• Up to 100 ft run: Same size as pump discharge port.
Regulator
• 100 ft. to 300 ft run: Increase one pipe size.
• 300 ft. to 600 ft run: Increase two pipe sizes.
AVC
PRESSURE TANK INSTALLATION – DEEP WELL
Port
The Pressure Tank provides a reservoir of water under pressure and
maintains cushion of air pressure to prevent pipe hammering and possible
damage to plumbing components. When water is drawn off through house
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fixtures, the pressure in the tank is lowered and the pressure switch starts
the pump.
STANDARD TANK CONNECTION
When a standard tank is used, an air volume control (AVC) adds air to the
tank when it is needed. See Figure 4 for typical standard tank installation.
To connect AVC to pump, thread a 1/8" compression fitting into tapped
hole on the front of the pump. Cut tubing to length to reach AVC; assemble
to fitting on pump and to AVC on tank. See installation instructions
provided with tank and AVC.
4 0 6 0
2 0
8 0
1 0 0
PRECHARGED TANK CONNECTION
When a precharged tank is used, no AVC is necessary. See Figure 5 for
typical precharged tank installation. A precharged tank contains a factory
Pressure
Regulator
provided air charge.
IMPORTANT: Your pump pressure switch is set for a 20-40 PSI range and
Relief Valve
requires a tank pre-charge of 28 PSI for proper operation (see Figure 6). See
tank owner's manual. An annual check on tank charge is recommended.
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Tire Gauge
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6