Page 2 of 8 IN014 Rev I
INSTALLATION INSTRUCTION IN014 Rev I
XP/XR Series
GP Series
XP101 p/n 23008-1
GP201 p/n 23007-1
XP151 p/n 23010-1
GP301 p/n 23006-1
XP201 p/n 23011-1
GP401 p/n 23009-1
XR261 p/n 23019-1
GP501 p/n 23005-1
1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The GP/XP/XR Series Radon Fans are intended for use by trained, professional Radon mitigators.
The purpose of this instruction is to provide additional guidance for the most effective use of a fan.
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 GP/XP/XR Series Fans are 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 fan should be stored
in an area where the temperature is never less than 32 degrees F. or more than 100 degrees F.
1.3 ACOUSTICS
The GP/XP/XR Series Fan, when installed properly, operates with little or no noticeable noise to
the building occupants. The velocity of the outgoing air should 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 GP/XP/XR Series Fan. The lack of cooling
air may result in the fan cycling on and off as the internal temperature rises above the thermal
cutoff and falls upon shutoff. Should this condition arise, it is recommended that the fan be turned
off until the water recedes allowing for return to normal operation.
1.5 SLAB COVERAGE
The GP/XP/XR Series Fan can provide coverage up to 2000+ sq. ft. per slab penetration. This will
primarily depend on the sub-slab material in any particular installation. In general, the tighter the
material, the smaller the area covered per penetration. Appropriate selection of the GP/XP/XR
Series Fan best suited for the sub-slab material can improve the slab coverage. The GP & XP Series
have a wide range of models to choose from to cover a wide range of subslab material. The higher
static suction fans are generally used for tighter subslab materials. The XR Series is specifically
designed for high flow applications such as stone/gravel and drain tile. 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.
