RadonAway GP500 Manual

IN006 Rev K 0417 13 Saber Way, Ward Hill, MA 01835 | radonaway.com
GP500
Installation & Operating
Instructions

IN006 Rev K 0417 23 Saber Way, Ward Hill, MA 01835 | radonaway.com
GP500 Series Fan Installation & Operating Instructions
Please Read and Save These Instructions.
DO NOT CONNECT POWER SUPPLY UNTIL FAN IS COMPLETELY INSTALLED. MAKE SURE ELECTRICAL
SERVICE TO FAN IS LOCKED IN “OFF” POSITION. DISCONNECT POWER BEFORE SERVICING FAN.
1. WARNING! Do not use fan in hazardous environments where fan electrical system could provide ignition to
combustible or ammable materials.
2. WARNING! Do not use fan to pump explosive or corrosive gases. See Vapor Intrusion Application Note #AN001
for important information on VI applications. RadonAway.com/vapor-intrusion
3. WARNING! Check voltage at the fan to ensure it corresponds with nameplate.
4. WARNING! Normal operation of this device may affect the combustion airow needed for safe operation of fuel
burning equipment. Check for possible backdraft conditions on all combustion devices after installation.
5. NOTICE! There are no user serviceable parts located inside the fan unit.
Do NOT attempt to open. Return unit to the factory for service.
6. All wiring must be performed in accordance with the National Fire Protection Association’s (NFPA)”National
Electrical Code, Standard #70”-current edition for all commercial and industrial work, and state and local
building codes. All wiring must be performed by a qualied and licensed electrician.
7. WARNING! Do not leave fan unit installed on system piping without electrical power for more than 48 hours.
Fan failure could result from this non-operational storage.
8. WARNING! TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE
FOLLOWING:
a) Use this unit only in the manner intended by the manufacturer. If you have questions, contact the
manufacturer.
b) Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting
means to prevent power from being switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.

IN006 Rev K 0417 33 Saber Way, Ward Hill, MA 01835 | radonaway.com
1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The GP500 is intended for use by trained, professional, certied/licensed Radon mitigators. The purpose of this
instruction is to provide additional guidance for the most effective use of the GP500. This instruction should be
considered as a supplement to EPA / radon industry standard practices, state and local building codes and state
regulations. In the event of a conict, those codes, practices and regulations take precedence over this instruction.
1.2 ENVIRONMENTALS
The GP500 is designed to perform year-round in all but the harshest climates without additional concern for
temperature or weather. For installations in an area of severe cold weather, please contact RadonAway for
assistance. When not in operation, the GP500 should be stored in an area where the temperature is never less than
32 degrees F. or more than 100 degrees F. When the unit is turned off for extended periods of time the drain plug
should be removed from the bottom of the unit.
1.3 ACOUSTICS
The GP500, when installed properly, operates with little or no noticeable noise to the building occupants. Ensure
a solid mounting for the GP500 to avoid structure-borne vibration or noise.
The velocity of the outgoing air must also be considered in the overall system design. In some cases the “rushing”
sound of the outlet air may be disturbing. In these instances, the use of a RadonAway Exhaust Mufer is
recommended.
1.4 GROUND WATER
In the event that a temporary high water table results
in water at or above slab level, water may be drawn
into the riser pipes thus blocking air ow to the
GP500. The lack of cooling air may result in the
GP500 cycling on and off as the internal temperature
rises above the thermal cutoff and falls upon shutoff.
Should this condition arise, the GP500 should be
disconnected until the water recedes allowing for
return to normal operation.
1.5 CONDENSATION & DRAINAGE
Condensation is formed in the piping of a mitigation
system when the air in the piping is chilled below
its dew point. This can occur at points where the
system piping goes through unheated space such as
an attic, garage or outside. The system design must
provide a means for water to drain back to a slab hole
to remove the condensation.
GP500 Series Fan Installation & Operating Instructions
For General Series
GP500 p/n 23003-1

IN006 Rev K 0417 43 Saber Way, Ward Hill, MA 01835 | radonaway.com
For GP500 piping, the following table provides the minimum recommended pipe diameter and pitch under several
system conditions.
*Typical GP500 operational ow rate is 25 - 90 CFM. (For more
precision, determine ow rate by using the chart in the addendum.)
The GP500 incorporates a unique condensation drain system which actively
pumps water back to the inlet piping for drainage to a slab hole. It is required
that the system piping provide a drop-off immediately at the inlet of the unit,
as shown in Figure 1, to prevent reintrainment of condensation. If this is not
possible the condensate drain tube may be extended to the point of drop off by
slipping 5/16” ID tubing (available from RadonAway) over the drain tube.
An alternative condensation drain may be provided using the 3/8” NPT tting
on the bottom of the unit. The alternative drain system must account for Radon
leakage as the drain is under positive pressure. If the unit is installed and
electrical power is removed for extended periods of time the drain plug should be
removed to allow water to drain from the unit.
IMPORTANT: Do not overtighten drain plug! Do not use a wrench or tighten beyond nger tight. Apply sealant to
threads if required.
1.6 SYSTEM MONITOR & LABEL
A System Monitor, such as a manometer (P/N 50017) or audible alarm (P/N 28001-2) is required to notify the
occupants of a fan system malfunction. A System Label (P/N 15022) with instructions for contacting the installing
contractor for service and also identifying the necessity for regular radon tests to be conducted by the building
occupants, must be conspicuously placed where the occupants frequent and can see the label.
1.7 SLAB COVERAGE
The GP500 can provide coverage up to 1000+ sq. ft. per slab penetration. This will, of course, depend on the
sub-slab material in any particular installation and the diagnostic results. In general, the tighter the sub-slab
material, the smaller the area covered per penetration. Additional suction points can be added as required. It is
recommended that a small pit (5 to 10 gallons in size) be created below the slab at each suction hole.
1.8 ELECTRICAL WIRING
The GP500 plugs into a standard 115VAC outlet. The use of a Ground Fault Interrupter circuit (GFI) is
recommended for all installations and required for outdoor or wet installations. All wiring must be performed in
accordance with the National Fire Protection Association’s (NFPA)”National Electrical Code, Standard #70”-current
edition for all commercial and industrial work, and state and local building codes. All wiring must be performed by
a qualied and licensed electrician. Ensure that all exterior electrical boxes are outdoor rated and properly sealed to
prevent water penetration into the box. A means, such as a weep hole, is recommended to drain the box.
1.9 SPEED CONTROLS
The use of electronic speed controls on the GP500 is NOT recommended.
Pipe
Diameter
Minimum Rise per 1 Foot of Run*
@ 25 CFM @ 50 CFM @ 100 CFM
4” 1/8” 1/4” 3/8”
3” 1/4” 3/8” 1 1/2”
RUN
RISE

IN006 Rev K 0417 53 Saber Way, Ward Hill, MA 01835 | radonaway.com
2.0 INSTALLATION
2.1 A.C. POWER CONNECTION
See Section 1.8. The GP500 requires an 18 gauge, 3 wire SJ
power cord, RadonAway p/n 27003 or equivalent. For proper
seal, the cord diameter should be 5/16”. To install:
1) Prepare the power cord by stripping jacket and
insulation as shown in Figure 2.
2) Loosen sealing nut on electrical inlet by turning
counterclockwise.
3) Insert power cord and route as shown in Figure 3.
4) Fasten power cord with cable clamp provided.
5) IMPORTANT: Tighten sealing nut by turning clockwise.
Hand tighting is adequate to provide seal.
6) Connect wiring with wire nuts provided, observing
proper connections:
7) Tape over wire and wire nut with electrical tape to seal
out moisture. A rubber splicing tape or self-fusing
silicone tape provide best moisture seal.
2.2 OUTDOOR (BAND JOIST OR SIDEWALL)
1) Locate site for GP500 mounting. Use the diagram in
Figure 4 to assist in locating the inlet hole for the unit.
2) Drill a 5.25” or 5.50” hole through the band joist or
sidewall.
(Use Figure 5 as a Guide for 3-6):
3) Apply a liberal bead of silicone caulk to the sealing ring.
4) Carefully feed power cord through hole and install the
unit into the hole drilled.
5) Ensure the unit is level and plumb.
6) Ensure the inlet of the fan does not contact any building
surface when mounting to avoid noise or vibration
transmission.
7) Secure unit to sidewall with four (4) #6 x 2.0” drywall
screws provided. Use nylon washers provided under the
screw heads to prevent marring the nish.
8) Complete piping run, providing exible couplings or
other means of disconnect for servicing the unit.

IN006 Rev K 0417 63 Saber Way, Ward Hill, MA 01835 | radonaway.com
Under certain circumstances, a exible pipe coupling, RadonAway
p/n 79019-1, may ease installation. This may be particularly
true of gable side installations where the system piping runs
perpendicular to the oor joists. Install the pipe coupling as
shown in Figure 6, making certain to avoid sharp bends or kinks
in the piping. (TIP: You may connect the pipe coupling to the
GP500 before installing the unit through the band joist.)
2.3 MUFFLER INSTALLATION (Optional)
Install the vent mufer assembly in the selected location in the
outlet ducting. Solvent weld all connections. The mufer is
normally installed at the end of the vent pipe.
2.4 OPERATION CHECKS & ANNUAL SYSTEM MAINTENANCE
____ Verify all connections are tight and leak-free.
____ Ensure the GP500 and all ducting is secure and vibration-free.
____ Verify system vacuum pressure with Manometer or other pressure gauge. Ensure vacuum pressure is within
normal operating range and less than 3.8” WC (based on sea-level operation, at higher altitudes reduce by
about 4% per 1000 Feet). If this is exceeded, increase the number of suction points.
____ Verify Radon levels by testing to EPA Protocol and applicable testing standards.
PRODUCT SPECIFICATIONS
The following chart shows fan performance for the GP500:
Power: 85-153 watts (varies with actual load conditions) @ 115 VAC
Inlet/Outlet: 3” PVC
Mounting: Brackets for vertical mount on bandjoist or sidewall. (16” Mounting Centers)
Outdoor installations: GP500 mounts ush to wall projecting only 4” with inlet duct passing
through the sidewall or band joist. Power cord is on the inside, simplifying connection.
Weight: 20 lbs.
Recommended ducting: 3” Schedule 20/40 PVC Pipe or attractive thin walled 3” O.D. PVC
Storage Temperature Range: 32-100 degrees F
Thermally protected
Size: 17” x 12” x 4” (plus 7” inlet duct)

IN006 Rev K 0417 73 Saber Way, Ward Hill, MA 01835 | radonaway.com
IMPORTANT INSTRUCTIONS TO INSTALLER
Inspect the GP500 Fan for shipping damage within 15 days of receipt. Notify RadonAway of any damages immediately.
Radonaway is not responsible for damages incurred during shipping. However, for your benet, Radonaway does ensure
shipments.
There are no user serviceable parts inside the fan. Do not attempt to open. Return unit to factory for service.
Install the GP500 Fan in accordance with all EPA radon industry standard practices, and state and local building codes and state
regulations.
Provide a copy of this instruction or comparable radon system and testing information to the building occupants after
Warranty
Subject to any applicable consumer protection legislation, RadonAway warrants that the GP500 Fan (the “Fan”) will be free from defects
in materials and workmanship for a period of two (2) years from the date of manufacture (the “Warranty Term”). Outside the Continental
United States and Canada the Warranty Term is one (1) year from the date of manufacture.
RadonAway will replace any Fan which fails due to defects in materials or workmanship. The Fan must be returned (at owner’s cost) to
the RadonAway factory. Any Fan returned to the factory will be discarded unless the Owner provides specic instructions along with the
Fan when it is returned regardless of whether or not the fan is actually replaced under this warranty. Proof of purchase must be supplied
upon request for service under this Warranty.
This Warranty is contingent on installation of the Fan in accordance with the instructions provided. This Warranty does not apply where
any repairs or alterations have been made or attempted by others, or if the unit has been abused or misused. Warranty does not include
damage in shipment unless the damage is due to the negligence of RadonAway.
RadonAway is not responsible for installation, removal or delivery costs associated with this Warranty.
For service under this Warranty, contact RadonAway for a Return Material Authorization (RMA) number and shipping information. No
returns can be accepted without an RMA. If factory return is required, the customer assumes all shipping cost to and from factory.
RadonAway®
3 Saber Way
Ward Hill, MA 01835 USA
TEL [phone]
FAX [phone]
Email to: [e-mail]
Record the following information for your records:
Serial No. _________________________________________________
Purchase Date: _________________________________________________
EXCEPT AS STATED ABOVE, THE GP500 FANS ARE PROVIDED WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL RADONAWAY BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES ARISING OUT OF, OR RELATING TO, THE FAN OR THE PERFORMANCE THEREOF.
RADONAWAY’S AGGREGATE LIABILITY HEREUNDER SHALL NOT IN ANY EVENT EXCEED THE AMOUNT OF THE
PURCHASE PRICE OF SAID PRODUCT. THE SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY SHALL BE THE
REPAIR OR REPLACEMENT OF THE PRODUCT, TO THE EXTENT THE SAME DOES NOT MEET WITH RADONAWAY’S
WARRANTY AS PROVIDED ABOVE.