Aprilaire ARNHPF Manual

AprilAire High Pressure Fan
Installation & Operating Instructions
ARNHPF
AprilAire High Pressure Fan
Installation & Operating Instructions
ARNHPF
1.0 SYSTEM DESIGN CONSIDERATIONS
1.1 INTRODUCTION
The AprilAire High Pressure Fan is intended for use by trained, professional, certified/licensed radon mitigators.
The purpose of these instructions is to provide additional guidance for the most effective use of the AprilAire
High Pressure Fan. 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 conflict, those standards,
codes, practices and regulations take precedence over these instructions.
1.2 FAN SEALING
The AprilAire High Pressure Fan is factory sealed; no additional caulk or other materials are required to inhibit
air leakage.
1.3 ENVIRONMENTALS
The AprilAire High Pressure 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 AprilAire 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.
1.4 ACOUSTICS
The AprilAire High Pressure 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 a “rushing” sound of the outlet air may be audible. In these instances, the use of a AprilAire
Exhaust Muffler is recommended.
1.5 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 AprilAire High Pressure Fan. The lack of cooling air may result in the
fan cycling on and off as the internal temperature rises above the thermal cutoff. Should this condition arise, it
is recommended that the fan be turned off until the water recedes, allowing for return to normal operation.
1.6 SLAB COVERAGE
The AprilAire High Pressure Fan is specifically designed for applications with moderate to tight soils. Slab
coverage will primarily depend on the sub-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 AprilAire Radon Fan best suited for the sub-slab material can
improve the slab coverage. 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.
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READ AND SAVE THESE 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! For general ventilating use only. Do not use to exhaust hazardous, corrosive or explosive
materials, gases or vapors.
2. WARNING! Check voltage at the fan to insure it corresponds with nameplate.
3. 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.
4. NOTICE! There are no user serviceable parts located inside the fan unit. Do NOT attempt to open. Return
unit to the factory. (See Warranty, p. 8, for details.)
5. 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.
6. 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. (See p. 8.)
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.
c. Installation work and electrical wiring must be done by qualified person(s) in accordance with all
applicable codes and standards, including fire rated construction.
d. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of
fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturers’
guidelines and safety standards such as those published by any National Fire Protection Association,
and the American Society for Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), and the
local code authorities.
e. When cutting or drilling into a wall or ceiling, do not damage electrical wiring and other hidden utilities.
f. Ducted fans must always be vented to outdoors.
g. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application
and be connected to a GFCI (Ground Fault Circuit Interrupter) protected branch circuit.
ARNHPF
Radon High Pressure Fan - Radon
INSTALLATION & OPERATING INSTRUCTIONS
B2209775B • 61002085 • 04.23
© 2023 AprilAire | aprilairepartners.com | 800.334.6011
AprilAire reserves the right to change specifications without notice.

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1.7 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. The AprilAire High Pressure Fan MUST be mounted vertically plumb and level, with the
outlet pointing up for proper drainage through the fan. Avoid mounting the fan in any orientation that will
allow water to accumulate inside the fan housing. The AprilAire High Pressure Fan is NOT suitable for
underground burial.
For AprilAire High Pressure Fan piping, the following table provides the minimum recommended pipe
diameter and pitch under several system conditions.
See p. 6 for detailed specifications.
1.8 SYSTEM MONITOR & LABEL
As may be required, system monitors, alarms and labels are available for separate purchase. The ARNHPF
fan is compatible with a 4.5” U-Tube Manometer (P/N ARN05M). You may choose to also use an audible alarm
(P/N ARNALM). A System Label (provided with manometer ARN05M) with instructions for contacting the
installing contractor for service and identifying the necessity for periodic radon tests to be conducted by the
building occupants, as may be required, can be conspicuously placed in a location where the occupants
frequent and can see the label.
1.9 ELECTRICAL WIRING
The AprilAire Fan operates on standard 120V, 60Hz AC. All wiring must be performed in accordance with the
National Electrical Code (NFPA), Standard #70, current edition. Failure to wire unit correctly may cause
serious injury, property damage or death due to fire or electric shock. All wiring must be performed by a
qualified 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 sealed to prevent water penetration
into the box. A means, such as a weep hole, is recommended to drain the box.
Canada Installations: Make all electrical connections in accordance with the current edition of the Canadian
Electrical Code CSA C22.1 and any local codes or ordinances that may apply.
2.0 INSTALLATION
The AprilAire High Pressure Fan can be mounted indoors or
outdoors. (It is suggested that current industry standards and
federal, state, county and local building codes and regulations
be followed in choosing the fan location.) The AprilAire High
Pressure Fan may be mounted directly on the system piping or
fastened to a supporting structure by means of an optional
mounting bracket.
The ducting from the fan to the outside of the building has a
strong effect on noise and fan energy use. Use the shortest,
straightest duct routing possible for best performance, and
avoid installing the fan with smaller ducts than recommended.
Insulation around the ducts can reduce energy loss and inhibit
mold growth. Fans installed with existing ducts may not
achieve their rated airflow.
2.1 MOUNTING
Mount the AprilAire High Pressure Fan vertically with outlet up, using
flexible couplings to connect the fan to the pipe. Ensure the unit is plumb
and level. When mounting directly on the system piping assure that the
fan does not contact any building surface to avoid vibration noise. An
optional mounting bracket is available, as are foam or rubber grommets
and other items for vibration isolation.
2.2 SYSTEM PIPING
Complete piping run, as may be required by current industry standards
and federal, state, county and local building codes and regulations, using
flexible couplings as a means of disconnect for servicing the unit and for
vibration isolation. As the fan is typically outside of the building thermal
boundary and is venting to the outside, installation of insulation around
the fan is not required. If desired, a vent muffler, available separately, may
be installed at the end of the pipe.
2.3 ELECTRICAL CONNECTION
Connect wiring with wire nuts provided, observing proper connections
(See Section 1.9). Note that the fan is not intended for connection to rigid
metal conduit.
IMPORTANT INSTRUCTIONS TO INSTALLER
•Inspect the AprilAire® High Pressure Fan for shipping damage within 15 days of receipt. Notify AprilAire of
any damages immediately. AprilAire is not responsible for damages incurred during shipping. However, for
your benefit, AprilAire does insure shipments.
•There are no user serviceable parts inside the fan. Do not attempt to open the housing. Return unit to
factory. (See Warranty below).
•Install the AprilAire High Pressure Fan in accordance with all current industry standards and federal, state,
county and local building codes and regulations.
•Provide a copy of this instruction and guidance for when to test for radon to the building occupants after
completing system installation.
2.4 OPERATION CHECKS & ANNUAL SYSTEM MAINTENANCE
Verify all connections are tight and leak-free.
Ensure the AprilAire High Pressure Fan and all ducting are secure and vibration-free.
Verify system vacuum pressure with manometer. Ensure vacuum pressure is within normal
operating range and less than the maximum recommended operating pressure.
(Based on sea-level operation, at higher altitudes reduce by about 4% per 1000 feet)
(Further reduce Maximum Operating Pressure by 10% for High Temperature environments.)
See Product Specifications. If this is exceeded, increase the number of suction points.
Verify Radon levels by testing to applicable current industry standards and federal, state,
county and local building codes and regulations.
THE FOLLOWING CHARTS SHOW THE PERFORMANCE OF THE AprilAire HIGH PRESSURE FAN
Typical CFM Vs. Static Pressure “WC
Model
Model Size Weight Inlet/Outlet
ARNHPF 10.9”H x 11.9” Dia. 7 lbs 11 oz 3.5”O.D.
(3.0” PVC Sched 40 size compatible)
Model Power Consumption
120VAC, 60Hz, 1.8 Amp Maximum
Maximum Recommended Operation Pressure*
(Sea Level Operation)**
*Reduce by 10% for High Temperature Operation **Reduce by 4% per 1000 ft. of altitude.
Model Recommended
Ducting
Recommended PVC
Pipe Mounting
Thermal
Cutout
Insulation
Class
ARNHPF 3” or 4”
PVC pipe
Inline pipe mount with flex couplings
(optional bracket available)
Class B
Insulation
Continuous Duty
3000 RPM
Thermally Protected
Residential and Commercial
Rated for Indoor or Outdoor Use
ARNHPF
0.2”
110
1.0”
97
1.5”
88
2.0”
79
2.5”
68
3.0”
54
3.5”
36
4.0”
14
70 - 170 watts 4.0” WC
ARNHPF
AprilAire High Pressure Fan Product Specifications
AprilAire High Pressure Fan Product Specifications (continued)
AprilAire High Pressure Fan Additional Specifications
Warranty
AprilAire® warrants that the Fan will be free from defects in materials and workmanship for a period of 12 months from the date of
installation or 18 months from the date of manufacture, whichever is sooner (the “Warranty Term”).
AprilAire® will replace any fan which fails due to defects in materials or workmanship during the Warranty Term. This Warranty is
contingent on installation of the Fan in accordance with the instructions provided. This Warranty does not apply to damage caused by
repairs or alterations made or attempted, 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 AprilAire®.
The Fan must be returned (at owner’s cost) to the AprilAire® 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. If factory return is required, the customer assumes all shipping costs, including insurance, to and from factory. Proof of
purchase must be supplied upon request for service under this Warranty.
5-YEAR EXTENDED WARRANTY WITH PROFESSIONAL INSTALLATION.
AprilAire® will extend the Warranty Term of the Fan to 60 months (5 years) from date of installation or 66 months from date of
manufacture, whichever is sooner, provided that the Fan is installed by a professional radon mitigation contractor. Proof of purchase
and/or proof of professional installation may be required for service under this warranty. This extended warranty is not offered outside
the continental United States and Canada.
AprilAire® is not responsible for installation, removal or delivery costs associated with this Warranty.
LIMITATION OF WARRANTY
EXCEPT AS STATED ABOVE AND AS REQUIRED BY APPLICABLE LAW, THE FAN IS PROVIDED WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. TO THE EXTENT IMPLIED WARRANTIES CANNOT BE DISCLAIMED, THEY ARE LIMITED IN DURATION AND REMEDY TO THE SAME
EXTENT AS THE EXPRESS WARRANTY STATED ABOVE.
TO THE EXTENT PERMITTED BY LAW, AprilAire SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES ARISING OUT OF, OR RELATING TO, THE FAN OR THE PERFORMANCE THEREOF. AprilAire’s AGGREGATE LIABILITY
HEREUNDER SHALL IN NO EVENT EXCEED THE AMOUNT OF THE PURCHASE PRICE OF THE FAN. THE SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARRANTY SHALL BE THE REPLACEMENT OF THE FAN.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential
damages, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
For service under this Warranty, contact AprilAire for a Return
Material Authorization (RMA) number and shipping information.
No returns can be accepted without an RMA.
AprilAire
1015 East Washington Ave, Madison, WI USA
TEL [phone]
Record the following information for your records:
Serial Number: Purchase Date:
120°C/248°F
WARRANTY REGISTRATION: Visit us online at aprilaire.com to register
your AprilAire product. If you do not have online access, please mail
a postcard with your name, address, phone number, email address,
product purchased, model number, date of purchase, and dealer
name and address to: AprilAire, P.O. Box 1467, Madison, WI 53701.
Your warranty registration information will not be sold or shared
outside of this company.
120 VAC
Common
Ground
Capacitor
White
Black Brn
Brn/Wht
Green
Motor
AprilAire High Pressure Fan Wiring Diagram
Pipe
Diameter
Minimum Rise per Ft 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
Typical
Indoor Installation
Typical
Outdoor Installation
Attic
Closet
Basement
77728
LISTED
Electric Fan
Conforms to
UL STD. 507
Certified to
CAN/CSA STD.
C22/2 No.113