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ASSEMBLY INSTRUCTIONS
Optional Air Filter
An air filter (available separately) can be added to this unit to provide additional filtration of the intake air. The unit will
accept a nominal 9-1/2" x 9-1/2" x 1-3/4" filter.
1. Release the toggle latch securing the cover in place and open the cover
2. Squeeze and remove the spring that secures the insect filter in place.
Caution:
When the fan is installed upside down, the insect filter is secured to the fan by the spring. If the spring is
!
dis-engaged, the insect filter can fall out causing damage or injury if not prepared.
3. Slide the filter into the slot in the housing. Make sure the filter is seated to the bottom of the housing.
4. Squeeze the spring and re-engage the spring, close the cover and tighten the toggle latch.
ELECTRICAL CONNECTIONS
!
Warning – Disconnect Power Before Servicing
1. Remove the screw and place the wiring plate in a secure place.
2. Run 120 VAC house wiring to the location of the fan. Use only
UL-approved connectors (not included) to attach the house wiring to
the wiring plate. Refer to the wiring diagram, and connect the wires as
shown.
3. Carefully tuck wires back inside wiring plate and replace wiring plate
securing with the screw that was removed.
WARRANTY
QuFresh warrants this product to be free from defects in materials and workmanship for a period of one year from the date of purchase. Warranty does
not apply to product which fails due to abuse, misuse, incorrect installation or improper maintenance. During the one-year warranty period, QuFresh will
repair or replace, at its option, any product or part which has a factory defect in workmanship or materials.
The foregoing shall constitute our sole and exclusive warranty and our sole and exclusive liability, and is in lieu of any other warranties, whether written,
oral, implied or statutory. Under no circumstances will QuFresh be liable for incidental or consequential damages occurring in connection with the use or
performance of the product or other indirect damages with respect to loss of profits, revenue or property or cost of removal, installation or reinstallation.
Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some states do not allow limitations on how long
an implied warranty lasts, so the above exclusions may not apply to you.
This warranty gives you specific legal rights and you may have other rights which vary from state to state and province to province.
OPERATION AND SETTINGS
The control board is located in the fan housing:
Slide switch for CFM control（for QUF100X）:
50CFM/80CFM/100CFM constant CFM for each speed. Factory preset for 80
CFM.
Slide switch for operating mode: Energy Saving/OFF/ON（for QUF100X）:
Factory preset in Energy Saving mode;
Slide Switch in ON mode（for QUF100X）:
1. Unit will run continuously; only freeze protection (Temperature detected<34°F)
can turn unit OFF.
2. The optional heater will operate as described in the instructions provided with
the heater.
3. The ON/OFF relay to balance fan system control will cycle the other fan
(ON/OFF) with this unit.
Slide Switch in Energy Saving Mode (Default)（for QUF100X）:
In Energy Saving mode the unit monitors the return air temperature and relative
humidity. When conditions are beyond the limits set, the unit will run to sample
the return air for 5 minutes every 15 minutes, to check if conditions are favorable
for ventilation. This is called sampling mode. If conditions are favorable the unit
will run continuously until conditions become unfavorable at which point the unit
will return to sampling mode.
120V/AC
Model:
L
QUF100X
N
L
N
L
N
Model:
120V/AC
FA100X
Model:QUF100X
3
BLK
WHT
GRD
SWITCH BOX
BLU
WHT
Balance Fan
BRN
WHT
Heater I
RED
WHT
Heater II
BLK
WHT
GRD
SWITCH BOX
MODEL
LT(°F)
ES
30
40
55
OFF
35
50
ON
30
40
45
HT(°F)
CFM
95
65
80
50
70
90
80
70
85
75
100
80
FAN
RELAY
RELAY
RELAY
UNIT
FAN
LH(%)
OFF
10
20
HH(%)
45
50
60
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