RadonAway HS2750 Manual

IN115 RevA v1 13 Saber Way, Ward Hill, MA 01835 | radonaway.com
HS2750 and HS5500
Installation & Operating
Instructions

IN115 RevA v1 23 Saber Way, Ward Hill, MA 01835 | radonaway.com
HS2750 and HS5500 Series Blower Installation
& Operating Instructions
Please Read and Save These Instructions.
DO NOT CONNECT POWER SUPPLY UNTIL BLOWER IS COMPLETELY INSTALLED.
MAKE SURE ELECTRICAL SERVICE TO BLOWER IS LOCKED IN “OFF” POSITION. DISCONNECT
POWER BEFORE SERVICING.
1. WARNING! Do not use blower in hazardous environments where blower electrical system could provide ignition
to combustible or ammable materials.
2. WARNING! Check voltage at the blower to ensure it corresponds with nameplate. See Vapor Intrusion
Application Note #AN001 for important information on VI Applications. RadonAway.com/vapor-intrusion
3. 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.
4. 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.
5. WARNING! In the event that the blower is immersed in water, return unit to factory for service before operating.
6. WARNING! Do not twist or torque blower inlet or outlet piping as leakage may result.
7. WARNING! Do not leave blower unit installed on system piping without electrical power for more than 48 hours.
Blower 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.

IN115 RevA v1 33 Saber Way, Ward Hill, MA 01835 | radonaway.com
1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The HS2750 and HS5500 Blowers are intended for use by trained, certied/licensed, professional radon
mitigators. The purpose of these instructions is to provide additional guidance for the most effective use of
the HS2750 and HS5500 Blowers. These instructions should be considered supplemental to current industry
standards and federal, state, county and local building codes and regulations. In the event of a conict, those
codes, practices and regulations take precedence over these instructions.
1.2 ENVIRONMENTALS
The HS2750 and HS5500 Blowers 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, HS2750 and HS5500 Blowers should be stored in an area
where the temperature is always greater than 32°F or less than 100°F. The HS2750 and HS5500 Blowers are
thermally protected such that they will shut off when the internal temperature is above 185°F / 85°C. If the HS2750
or HS5500 Blower is idle in an area where the ambient temperature exceeds this shut off, it will not restart until the
internal temperature falls below 75°C.
1.3 ACOUSTICS
The HS2750 or HS5500 Blower, 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
HS2750 or HS5500 Blower 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 HS2750 or HS5500 Blower 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,
in some cases a “rushing” sound of the outlet air may be audible. In these instances, the use of a RadonAway
Exhaust Mufer (p/n 24002) is recommended.
1.4 GROUND WATER
Under no circumstances should water be allowed to be drawn into the inlet of the HS2750 and HS5500 Blowers
as this may result in damage to the unit. The HS2750 or HS5500 Blower should be mounted at least 5 feet above
the slab penetration to minimize the risk of lling the Blower 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 ow to the HS2750 or HS5500 Blower. The lack of cooling air will result in the Blower
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 HS2750 or HS5500 Blower until the water recedes allowing for
return to normal operation; then reconnect and power on to turn the Blower back on.
1.5 CONDENSATION & DRAINAGE
WARNING!: Failure to provide adequate drainage for condensation can result in system failure and damage the HS Blower.
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.
HS2750 and HS5500 Blower Installation
& Operating Instructions
High Suction Series
HS2750 p/n 28595
HS5500 p/n 28596

IN115 RevA v1 43 Saber Way, Ward Hill, MA 01835 | radonaway.com
The use of small diameter piping in a system increases the speed at which the air moves. The speed of the air can
pull water uphill and, at sufcient velocity, it can actually move water vertically up the side walls of the pipe. This
has the potential of creating a problem in the negative pressure (inlet) side piping. For HS2750 or HS5500 Blower
inlet piping, the following table provides the minimum recommended pipe diameters as well as minimum pitch
under several system conditions. Use this chart to size piping for a system.
All exhaust piping should be 2” PVC.
1.6 SYSTEM MONITOR & LABEL
A properly designed system should incorporate a “System On” indicator for afrmation of system operation. The
HS2750 and HS5500 Blowers come equipped with a built-in magnehelic pressure gauge located on the front
cover which serves this purpose. Other indicator products such as u-tube manometers should be mounted at least
5 feet above the slab penetration to minimize the risk of lling the gauge with water in installations with occasional
high water tables. If required, place in a conspicuous location a System Label (such as RadonAway P/N 15005-
20) with instructions for contacting the installing contractor for service and also identifying the necessity for regular
radon tests to be conducted.
1.7 SLAB COVERAGE
The HS2750 or HS5500 Blower can provide coverage of well over 1000 sq. ft. per slab penetration. This will, of
course, depend on the sub-slab aggregate in any particular installation and the diagnostic results. In general, sand
and gravel are much looser aggregates than dirt and clay. Additional suction points can be added as required. It is
recommended that a small pit (5 to 10 gallons in size; larger as needed) be created below the slab at each suction
hole. When ne sand or dirt is present it is recommended that the pit be lined with a material such as clean gravel,
size 4, 5, 56, or 6 as classied (ASTM C33).
1.8 ELECTRICAL WIRING
HS2750 or HSHS5500 Blower models come with an electrical switch box for hard wiring to a 120V electrical
source. 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. Outdoor installations require the use
of a UL listed watertight conduit. Ensure that all exterior electrical boxes are outdoor rated and properly caulked to
prevent water penetration into the box. A means, such as a weep hole, is recommended to drain the box.
WIRING DIAGRAM
1.9 SPEED CONTROLS
The HS2750 and HS5500 have 4-speed (low, medium, high, maximum) built-in speed controls. They are not safe
for use with solid state speed controls.
*Typical operational ow rates:
RUN
RISE
Pipe
Diameter
Minimum Rise per 1 Foot of Run*
@ 25 CFM @ 50 CFM @ 100 CFM
4” 1/32” 3/32” 3/8”
3” 1/8” 3/8” 1 1/2”

IN115 RevA v1 53 Saber Way, Ward Hill, MA 01835 | radonaway.com
2.0 INSTALLATION
2.1 MOUNTING
Mount the HS2750 or HS5500 Blower to the wall studs, or similar structure, in the selected location with (4) 1/4”
x 1 1/2” lag screws (not provided). Ensure the HS2750 or HS5500 Blower is both plumb and level.
2.2 DUCTING CONNECTIONS
Make nal ducting connection to HS2750 or HS5500 Blower with exible couplings. Ensure all connections are
tight. Do not twist or torque inlet and outlet piping on HS2750 or HS5500 Blower or leaks may result.
NOTE: Do NOT solvent weld ttings to unit hubs.
2.3 VENT MUFFLER INSTALLATION
Install the mufer assembly in the selected location in the outlet ducting. Solvent weld all connections. The mufer
is normally installed above the rooine at the end of the vent pipe.
2.4 OPERATION CHECKS & ANNUAL SYSTEM MAINTENANCE
______ Verify all connections are tight and leak-free.
______ Ensure the HS2750 or HS5500 Blower and all ducting is secure and vibration-free.
______ Verify system vacuum pressure with Magnehelic. Ensure vacuum pressure is within normal
operating range and less than the maximum recommended as shown below:
HS2750: 5” WC (low) / 10” WC (medium) / 15” WC (high) / 20” WC (maximum)
HS5500: 20” WC (low) / 30” WC (medium) / 40” WC (high) / 50” WC (maximum)
(Above are based on sea-level operation, at higher altitudes reduce above by about 4% per 1000 Feet.)
If these are exceeded, increase number of suction points.
______ Verify Radon levels by testing to applicable current industry standards and federal, state, county
and local building codes and regulations.
ELECTRICAL BOX
WITH SPEED
CONTROL

IN115 RevA v1 63 Saber Way, Ward Hill, MA 01835 | radonaway.com
Number Of Speeds: 4
Volts: 120
Hz: 60
AMPS (Max): 4
Inlet: 3” PVC (3.5” OD)
Outlet: 2” PVC (2.37” OD)
Mounting: Brackets for vertical mount
Weight: HS2750, 18 lbs; HS5500, 19.25 lbs
Size: 17.5” W x 9.0” D x 18.5” H
Minimum Recommended PVC Ducting (2” / 3” / 4” / 6” / 8”): 3” Inlet; 2” Outlet
Storage Temperature Range: 32°F-100°F
Thermal Cutout: 185°F / 85°C
Locked rotor protection
HS2750 and HS5500 PRODUCT SPECIFICATIONS
Model
Speed Setting
(Max. Op. Pressure:
“WC@Sea Level)
Typical CFM vs Static Suction WC
(Recommended Operating Range) Power* Watts
@ 120VAC
2.5” 5.0” 7.5” 10.0” 12.5” 15.0” 20.0” 25.0”
HS2750
Low (5”) 33 24 n/a n/a n/a n/a n/a n/a 112-123
Medium (10”) 47 42 34 25 n/a n/a n/a n/a 199-245
High (15”) n/a n/a 47 43 33 23 n/a n/a 266-337
Maximum (20”) n/a n/a n/a n/a 48 43 24 n/a 361-463
Shutoff Pressure (“WC @ Sea Level): Low 7.8”, Med 13.5”, High 17.6”, Max 22.6”
*Power consumption varies with actual load conditions
Model
Speed Setting
(Max. Op. Pressure:
“WC@Sea Level)
Typical CFM vs Static Suction WC
(Recommended Operating Range) Power* Watts
@ 120VAC
5.0” 10.0” 20.0” 25.0” 30.0” 35.0” 40.0” 50.0”
HS5500
Low (20”) 44 39 22 n/a n/a n/a n/a n/a 243-281
Medium (30”) n/a n/a 53 41 36 22 n/a n/a 372-477
High (40”) n/a n/a n/a 45 39 31 22 n/a 527-625
Maximum (50”) n/a n/a n/a n/a n/a 34 29 17 591-632
Shutoff Pressure (“WC @ Sea Level): Low 24.5”, Med 34.7”, High 44.6”, Max 52.6”
*Power consumption varies with actual load conditions

IN115 RevA v1 73 Saber Way, Ward Hill, MA 01835 | radonaway.com
IMPORTANT INSTRUCTIONS TO INSTALLER
Inspect the RadonAway®HS2750 or HS5500 Blower for shipping damage within 15 days of receipt. Notify RadonAway®of any
damages immediately. RadonAway®is not responsible for damages incurred during shipping.
Install the HS2750 or HS5500 Blower in accordance with all current industry standards and federal, state, county and local
building codes and regulations.
Provide a copy of this instruction or comparable radon system and testing information to the building occupants after
completing system installation.
EXCEPT AS STATED ABOVE, THE HS2750/HS5500 BLOWERS 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 BLOWER 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.
Warranty
RadonAway® warrants that the HS2750/HS5500 Blower (the “Blower”) will be free from defects in materials and workmanship for
a period of 12 months from the date of purchase or 18 months from the date of manufacture, whichever is sooner (the “Warranty
Term”).
RadonAway® will replace or repair any Blower which fails due to defects in materials or workmanship during the Warranty Term. This
Warranty is contingent on installation of the blower 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 cover
damage in shipment unless the damage is due to the negligence of RadonAway®.
The Blower must be returned (at Owner’s cost) to the RadonAway® factory. Any Blower returned to the factory will be discarded unless
the Owner provides specic instructions along with the Blower when it is returned regardless of whether or not the Blower is actually
replaced under this warranty. Proof of purchase must be supplied upon request for service under this Warranty.
2-YEAR EXTENDED WARRANTY WITH INSTALLATION BY A FACTORY-CERTIFIED PROFESSIONAL
RadonAway® will extend the Warranty Term of the Blower to twenty-four (24) months from date of purchase or thirty (30) months
from the date of manufacture, whichever is sooner, if: (1) the Blower is installed in a professionally designed and professionally
installed active soil depressurization system or installed as a replacement Blower in a professionally designed and professionally
installed active soil depressurization system; and (2) proof of an installer Factory Training Certicate. Upon request, proof of purchase
and/or proof of professional installation may be required for service under this warranty. No extended warranty is offered outside
the Continental United States and Canada beyond the standard 12 months from the date of purchase or 18 months from the date
of manufacture, whichever is sooner. 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 costs, including insurance, 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: _____________________________________________