RadonAway GP500 User manual

Page 1 of 8 IN006 Rev G

Page 2 of 8 IN006 Rev G
RadonAway Ward Hill, MA.
GP500 Fan Installation 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 flammable materials.
2 WARNING! Do not use fan to pump explosive or corrosive gases.
3 WARNING! Check voltage at the fan to insure it corresponds with nameplate.
4 WARNING! Normal operation of this device may affect the combustion airflow
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 eturn 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 qualified 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.

Page 3 of 8 IN006 Rev G
INSTALLATION INSTRUCTIONS IN006 Rev G
For
DynaVac – General Series
GP500 p/n 23003-1
1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The GP500 is intended for use by trained, professional 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 standard practices, state and local building codes and state regulations.
In the event of a conflict, 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. Insure 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 Muffler 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 flow 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.

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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.
For GP500 piping, the following table provides the minimum recommended pipe
diameter and pitch under several system conditions.
Pipe
Diam. Minimum Rise per Foot of Run*
@ 25 CFM @ 50 CFM @ 100 CFM
4" 1/8 " 1/4 " 3/8 "
3" 1/4 " 3/8 " 1 1/2 "
*Typical GP500 operational flow rate is 25 - 90 CFM.
(For more precision, determine flow 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.
Figure 1
An alternative condensation drain may be provided using the 3/8" NPT fitting 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
finger tight. Apply sealant to threads if required.
1.6 "SYSTEM ON" INDICATOR
A U-Tube manometer or a vacuum alarm is recommended as a "System On" Indicator
for affirmation of system operation.
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.
Run
Rise

Page 5 of 8 IN006 Rev G
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 qualified and licensed
electrician.
1.9 SPEED CONTROLS
The use of electronic speed controls on the GP500 is NOT recommended.
2.0 INSTALLATION
2.1 A.C. POWER CONNECTION
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.
Figure 2
5) IMPORTANT: Tighten sealing nut by turning
clockwise. Hand tight is adequate to provide
seal.
6) Connect wiring with wire nuts provided,
observing proper connections:
GP500 Wire Connection
Green Ground
Black AC Hot
White AC Common
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.

Page 6 of 8 IN006 Rev G
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) Insure the unit is level and plumb.
6) Insure 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 finish.
8) Complete piping run, providing flexible
couplings or other means of disconnect for
servicing the unit.
Under certain circumstances, a flexible
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 floor
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 muffler assembly in the
selected location in the outlet ducting.
Solvent weld all connections. The muffler
is normally installed at the end of the
vent pipe.

Page 7 of 8 IN006 Rev G
2.4 OPERATION CHECKS
____ Verify all connections are tight and leak-free.
____ Insure the GP500 and all ducting is secure and vibration-free.
____ Verify system vacuum pressure with Manometer or other pressure gauge. Insure
vacuum pressure is 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.
ADDENDUM
PRODUCT SPECIFICATIONS
The following chart shows fan performance for the GP500:
Typical CFM vs Static Suction WC
1.0" 1.5" 2.0" 2.5" 3.0" 3.5" 4.0"
GP500 88 80 74 65 54 28 14
Power: 70 - 130 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 flush 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 Downspout available from RadonAway
Storage temperature range: 32 - 100 degrees F.
Thermally protected
Size: 17" x 12" x 4" (plus 7" inlet duct)

Page 8 of 8 IN006 Rev G
IMPORTANT INSTRUCTIONS TO INSTALLER
Inspect the GP500 Fan for shipping damage within 15 days of receipt. Notify RadonAway of
any damages immediately. adonaway is not responsible for damages incurred during
shipping. However, for your benefit, adonaway does insure shipments.
There are no user serviceable parts inside the fan. Do not attempt to open eturn unit to
factory for service.
Install the GP500 Fan in accordance with all EPA standard practices, and state and local
building codes and state regulations.
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
specific 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.
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.
For service under this Warranty, contact adonAway for a eturn Material Authorization ( MA) number and shipping
information. No returns can be accepted without an MA. If factory return is required, the customer assumes all
shipping cost to and from factory.
RadonAway
3 Saber Way
Ward Hill, MA 01835
TEL. [phone]
FAX [phone]
Record the following information for your records:
Serial No.
Purchase Date