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IN063 Rev.D 0120
3 Saber Way, Ward Hill, MA 01835 | radonaway.com
1.2. Water Flow Requirements
The standard residential AIRaider
TM
Systems are designed for use with water flows up to 20 gallons
per minute (GPM).* The system comes equipped with an outflow ball valve. If higher/ lower system
outflow is needed, open/close the ball valve by the amount necessary to balance the system. The well
pump output must produce at least 1 GPM more than theoutput of the AIRaider
TM
(i.e. well output =
8 GPM ; AIRaider
TM
outflow setting = 7 GPM) for proper system performance. If the well pump
output is less than the system output the AIRaider
TM
will run dry and possible damage may occur. To
prevent this from occuring the water flow rate must be determined before the system is installed.
*Some AIRaider
TM
Systems are not recommended for high flow residential properties. All repressurization
systems
(except for the AIRaider
TM
EZ
95
,433-S50 & 433-S50X) are sold separately. Proper repressurization
system
sizing is required to meet water flow needs. Consult manufacturer if assistance is needed for system selection.
In order to determine available water flow rate the following is needed:
• Garden Hose
• Five-Gallon Bucket
• A Stop Watch or Watch with a Second Hand
Or
• A Water Flow Meter
Household water use must be discontinued during the following flow rate test.
Mid-Range Flow Rate Test:
1. Attach garden hose to the drain connection on the base of the Well Pressure Tank.
2. Open the drain valve and run water for 15 minutes.
3. After 15 minutes, check the pressure gauge on the well system. Adjust the drain valve (open or
close) as needed to maintain the required running system pressure (constant pressure on gauge)
with the well pump running continuously.
4. Run for 5 minutes while ensuring that the pressure is not fluctuating.
5. Run water from the hose into a five gallon bucket. Using a stop watch, time how many seconds it
takes to fill the bucket (Z sec.).
6. Determine the GPM by dividing 60 seconds by the number of seconds it took to fill the bucket
(Z sec.). Multiply the answer by 5 gallons. This gives you the GPM.
GPM = ( 60 / Z ) x 5
7. Repeat steps 5 and 6 and average the 2 numbers. The answer is the well pump output in gallons
per minute. It is recommended that this number be indelibly recorded in an obvious location,
together with the date of test, as it will be required when setting the AIRaider
TM
System and may
be required for future troubleshooting of the well pump system or the AIRaider
TM
System.
PRE-INSTALLATION
1
