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1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The HS Series Fan is intended for use by trained, certified/licensed, professional radon mitigators. The purpose of
this instruction is to provide additional guidance for the most effective use of the HS Series Fan. 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 conflict, those codes, practices and regulations take precedence over this
instruction.
1.2 ENVIRONMENTALS
The HS Series Fan 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 HS Series Fan should be stored in an area where the temperature is always
greater than 32°F or less than 100°F. The HS Series Fan is thermally protected such that it will shut off when the
internal temperature is above 194°F +/- 9°F (90°C +/- 5°C). If the HS Series Fan is idle in an area where the
ambient temperature exceeds this shut off, it will not restart until the internal temperature falls below 104°F.
1.3 ACOUSTICS
The HS Series Fan, when installed properly, operates with little or no noticeable noise to the building occupants.
Recommended system design and installation considerations to minimize noise: When installing the HS Series Fan
above sleeping areas, select a location for mounting at the farthest possible distance. Avoid mounting near doors,
fold-down stairs or other uninsulated structures which may transmit sound. Ensure a solid mounting for the HS
Series Fan to avoid structure-borne vibration or noise.
The velocity of the outgoing air must also be considered in the overall system design. With small diameter piping,
the "rushing" sound of the outlet air can be disturbing. The system design should incorporate a means to slow and
quiet the outlet air. The use of the RadonAway Exhaust Muffler, p/n 24002, is strongly recommended.
1.4 GROUND WATER
Under no circumstances should water be allowed to be drawn into the inlet of the HS Series Fan as this may result
in damage to the unit. The HS Series Fan should be mounted at least 5 feet above the slab penetration to minimize
the risk of filling the HS Series Fan with water in installations with occasional high water tables.
In the event that a temporary high water table results in water at or above slab level, water will be drawn into
the riser pipes thus blocking air flow to the HS Series Fan. The lack of cooling air will result in the HS Series Fan
cycling on and off as the internal temperature rises above the thermal cutoff and falls upon shutoff. Should this
condition arise, power down and disconnect the HS Series Fan until the water recedes allowing for return to normal
operation; then reconnect and power on to turn the fan back on.
1.5 CONDENSATION & DRAINAGE
WARNING!: Failure to provide adequate drainage for condensation can result in system failure and damage the HS Series Fan.
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.
IN007 Rev N 0419
HS Series Fan Installation & Operating Instructions
3 Saber Way, Ward Hill, MA 01835 | radonaway.com
High Suction Series
HS2000E p/n 23004-4
HS3000E p/n 23004-5
HS5000E p/n 23004-6
HS2000 p/n 23004-1
HS3000 p/n 23004-2
HS5000 p/n 23004-3
3
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