
INTRODUCTION
The greenfan® bipolar ionizer unit produces positive and
negative ions to remove or neutralize odors and pathogens.
The unit has been lab-tested by Innovative Bioanalysis to
reduce an initial SARS-CoV-2 aerosol virus concentration
by 97.6% in 60 minutes when installed on a blower fan
circulating air in a 1280 ft3 chamber. Actual results may
vary. The unit can be installed in a Heating, Ventilating, Air
Conditioning (HVAC) system, air purifier, or ventilation fan.
American Society of Heating, Refrigerating, and Air-
conditioning Engineers recommends MERV 13 air filters or
HEPA filters to remove airborne viral particles.
MECHANICAL INSTRUCTIONS
a) WARNING: Do not connect unit to power before
mechanical and electrical installation are complete.
b) Mount unit to allow access for general maintenance.
c) Install greenfan® bipolar ionizer unit with two self-tapping
screws (1/4” drive x ¾” long) attached through holes in
flanges on either side of unit with at least one inch
clearance between carbon fiber electrodes and metal
surfaces to ensure airflow over both electrodes.
d) For HVAC system, install unit behind panel on fan inlet
downstream of air filter to reduce dust build-up on carbon
fiber electrode brushes. For low clearance applications,
locate rare-earth magnets with edges touching (e.g., OO),
peal tape backing off magnets, and attach to back of unit.
Be careful when installing screws to not break flanges.
e) For air purifier, install unit behind cover downstream of
air filter to reduce dust build-up and allow airflow to pass
over carbon fiber electrode brushes.
f) For ventilation fan, install unit behind protective grill on
a 22 gauge sheet metal support (supplied by installer)
attached to a vertical bracket holding fan motor.
ELECTRICAL INSTRUCTIONS
a) WARNING: Do not connect power to unit before
installation is complete. Always disconnect power to unit
before handling. All wiring must be in accordance with
National Electrical Code (NEC) or National Fire
Protection Association (NFPA) 70E-2021 and Authorities
Having Jurisdiction (AHJ).
b) The greenfan® bipolar ionizer must be installed inside
the HVAC equipment, air purifier, or fan. L'ioniseur
bipolaire greenfan® doit être installé à l'intérieur de
l'équipement CVC, du purificateur d'air ou du ventilateur.
c) This air cleaner shall not be installed on the hot-air side
of duct-type systems. Ce filtre à air ne doit pas être
installé du côté air chaud des systèmes de type conduit.
HVAC SYSTEM ELECTRICAL INSTRUCTIONS
a) Use multimeter to determine if 24VAC control signal
wires are available. If yes go to step b. If no, go to step c.
b) For 24VAC HVAC systems, refer to FIG. 1. Loosen
screws, insert wires (as shown), and tighten screws with
all wires in place. Connect greenfan® bipolar ionizer blue
wire to C terminal or to common wire of HVAC system.
Connect black wire to fan G terminal or fan G wire of
HVAC system. Connect white wire to heat W terminal or
heat W wire of HVAC system. Skip to step d.
c) For HVAC systems without accessible 24VAC control
signal wires, install 120/208/240V to 24VAC Class 2 UL-
listed transformer Model 1601-01 shown in FIG. 2 (scan
QR code for more information). Connect 120/208/240V
common wire of transformer to 120/208/240V common
wire of HVAC system and connect greenfan® bipolar
ionizer blue wire to one of the 24VAC wires from
transformer shown in FIG. 2. Connect greenfan® bipolar
ionizer black wire to other 24VAC wire from transformer
and connect appropriate wire from 120/208/240V
transformer to 120/208/240V hot wire of fan. Transformer
wire color may vary. Install wire nut to insulate unused
white wire of ionizer shown in FIG 2.
d) After completing all steps, temporarily close safety switch
on access panel door, jumper fan to turn on fan, and
verify LED lamp is illuminated on unit.
AIR PURIFIER ELECTRICAL INSTRUCTIONS
a) Air purifier electrical installation requires UL-listed
120/24VAC transformer Model 1602-01 (scan QR code
for more information) Use multimeter to locate 120VAC
wire to fan motor and use in-line splices to connect
120/24VAC transformer wire to 120VAC fan motor wire
and 120/24VAC transformer common wire to 120VAC
neutral wire.
b) Connect greenfan® bipolar ionizer blue wire to one wire
of 24VAC transformer and connect greenfan® bipolar
ionizer black wire to other wire of 24VAC transformer.
c) Install wire nut to insulate unused white wire of ionizer.
d) After completing all steps, turn on power to air purifier fan
and verify green LED lamp is illuminated on unit.
VENTILATION FAN ELECTRICAL INSTRUCTIONS
a) Ventilation fan electrical installation requires UL-listed
120/24VAC transformer Model 1602-01 (please scan QR
code). Use multimeter to locate 120VAC wire to fan
motor and use in-line splices to connect 120/24VAC
transformer wire to 120VAC fan motor wire and
120/24VAC transformer common to 120VAC neutral wire.
b) Connect greenfan® bipolar ionizer blue wire to one wire
of 24VAC transformer and connect greenfan® bipolar
ionizer black wire to other wire of 24VAC transformer.
c) Install wire nut to insulate unused white wire of ionizer.
d) After completing all steps, verify proper operation by
applying power to unit and confirming green LED lamp is
illuminated on greenfan® bipolar ionizer.
TROUBLESHOOTING
a) The greenfan® bipolar ionizer continuously monitors
electrodes to maintain consistent high-voltage and
balanced bipolar ion concentrations .
b) If LED lamp does not illuminate when HVAC fan, air
purifier, or ventilation fan is ON, then check: 1) power
supply or transformer is connected and operating
properly; 2) bipolar ionizer is properly connected to
power supply or transformer; 3) verify all wire and wire
nut connections are correct and tight; and 4) reconnect
any loose wires and verify operation as described above.
c) If LED lamp is flashing when thermostat fan, air purifier,
or fan is ON, then check: 1) power supply voltage input is
within 20 to 30VAC; and 2) electrical shorts on the
positive-ion electrode or the negative-ion electrode.
d) If above steps do not correct flashing or non-illuminated
LED lamps, then call 877-777-6756 or contact technical
support at: www.greenfan.co/support.