System air fantech bathfan Select Fit SF Series Manual

Installation, Operations, and Maintenance instruction EN
bathfan Select Fit SF Series
Ceiling Mount Exhaust Fan with Metal Casing

Table of contents
1 Introduction .............................................................1
1.1 Product Description ........................................1
1.2 Intended Use................................................. 1
1.3 Document Description .....................................1
1.4 Fantech Warranty........................................... 1
1.5 Product Overview........................................... 1
1.6 Type Designation ...........................................1
2 Safety ....................................................................2
2.1 Safety definitions............................................2
2.2 Safety Instructions.......................................... 2
2.3 Personal protective equipment .......................... 2
3 Installation ..............................................................3
3.1 To Set the Product Speed................................. 3
3.2 To Set the Product Speed................................. 3
3.3 To Set the Product Speed................................. 4
3.4 To Mount the Product ...................................... 4
3.5 To Mount with Mounting Holes...........................5
3.6 To Mount with Hanger Bar and Mounting
Holes...........................................................5
3.7 To Mount to One Side of the Framing.................. 5
3.8 To Mount to the Wall .......................................5
3.9 To Plan the Duct Run ......................................6
3.10 To Attach the Duct ..........................................6
3.11 To Manage the Duct Run.................................. 7
3.12 To Mount the Radiation Damper ........................ 7
4 Electrical connection ................................................. 8
4.1 To do before the electrical connection ................. 8
4.2 To connect the product to the power
supply..........................................................8
4.3 Motor Protection ............................................8
4.4 Wiring Diagrams ............................................ 8
4.5 To Attach the Ceiling Grille ............................. 10
5 Operation.............................................................. 11
5.1 To Start the Product ...................................... 11
5.1.1 To Stop the Product .......................... 11
5.2 Sequence of Operations ................................ 11
6 Troubleshooting ..................................................... 12
6.1 To Adjust the Humidity Sensor......................... 13
6.2 To Replace the Blower Assembly ..................... 13
7 Maintenance.......................................................... 14
7.1 To Maintain the Product ................................. 14
8 Technical data........................................................ 14
8.1 Technical Data Overview................................ 14
8.2 Product Dimensions...................................... 14

1 Introduction
1.1 Product Description
This product is a ceiling mount exhaust fan with a metal casing.
This fan has rotating parts and personnel must exercise safety
precautions during installation, operations, and maintenance.
1.2 Intended Use
Use this product only in the manner intended by Fantech. If you
have any questions, please contact a Fantech representative.
1.3 Document Description
This document contains instructions for installation, operation
and maintenance of the product. The procedures must be done
by approved personnel only.
Speak to a Fantech representative for more information on how
to install the product in different installation locations.
1.4 Fantech Warranty
Make a scan of the code above to access Fantech’s warranty
in English, French, or Spanish. This product has a 5 year
warranty.
If additional support is needed to retrieve the warranty, visit fan-
tech.net; call (800) 747–1762 (US), (800) 565–3548 (Canada),
or [phone] (Latin America); email support@fantech.
net; or mail us at 10048 Industrial Blvd, Lenexa, KS 66215
United States or at 50 Kanfläkt Way, Bouctouche, NB E4S 3M5
Canada.
1.5 Product Overview
4
3
5
2
1
6
7
8
1. Casing, quantity 1
2. Duct Connector, quantity 1
3. B Screw, quantity 4 – Self-tapping 1 inch (25mm)
4. A Screw, quantity 2 – Self-tapping 1/2 inch (13mm)
5. Hanger Bar, quantity 1 – 13–3/8 inch (340mm)
6. Light (On Select Models)
7. Ceiling Grille
8. Occupancy Sensor (On Select Models)
1.6 Type Designation
Product
Name
Model Name bathfan Select Fit (SF)
Series
Duct
Collar
Dimen-
sions in
inches
(mm)
bathfan Select Fit
SF50-80-100,
#484305
4 (102)
bathfan Select Fit
SF50-80-100L,
#484306
bathfan Select Fit
SFC50-80-100,
#484307
bathfan Select Fit
SFC50-80-100H,
#484308
bathfan Select Fit
SFC50-80-100HO,
#484309
bathfan Select Fit
SFC50-80-100L,
#484310
bathfan Select Fit
SFC50-80-100LH,
#484311
bathfan Select Fit
SFC50-80-100LHO,
#484312
Motor
Type
DC: Direct Current, 1–phase
1

2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out specially
important parts of the manual.
Warning
If you do not obey these instructions, there
is a risk of death or injury.
Caution
If you do not obey these instructions, there
is a risk of damage to the product, other
materials or the adjacent area.
Note:
Information that is necessary in a given situation.
2.2 Safety Instructions
Warning
This product is intended for general ventila-
tion use only. If you have questions, contact
Fantech. To decrease the risk of fire, elec-
tric shock, or injury, read and obey the fol-
lowing warning instructions before you do
work on the product:
• The ventilation contractor and the operator are responsible
for correctly installing the product.
• When installing the product, obey all applicable local condi-
tions and laws, and fire-rated construction codes and
standards.
• Because the product has rotating parts, exercise safety pre-
cautions when installing, operating, and maintaining the
product.
• Before installing, servicing, troubleshooting, or cleaning, set
the product’s electrical power supply source in the OFF posi-
tion, and lock the service disconnecting means. If the serv-
ice disconnecting means cannot be locked, attach a large
warning device to the service panel.
• To prevent the product from backdrafting, obey the heating
equipment manufacturer’s guidelines and safety standards
such as those published by the National Fire Protection As-
sociation (NFPA), the American Society for Heating, Refrig-
eration & Air Conditioning Engineers (ASHRAE), and the
local code authorities.
• When cutting or drilling into walls or ceilings, watch for elec-
trical wiring and other hidden utilities to prevent damage.
• Ducted exhaust fans must always be released to the
outdoors
• When installing the product over a tub or shower, identify as
appropriate for the application and connect to a GFCI
(Ground Fault Circuit Interrupter) – protected branch circuit
(ceiling installation only).
• Make sure the product is correctly grounded.
• Never place a switch where it can be reached from a tub or
shower.
• Do not use this product with any solid-state speed control
device.
• Do not block the air intakes or exhaust.
• Do not mount this product in an outdoor location.
• Install the product at least 7 feet (2.1 meters) above the floor.
• Do not start and stop the product quickly.
• Do not clean the product with chemicals that can cause cor-
rosion or water more than 60° Celsius (140° Fahrenheit).
• Do not let unwanted objects enter the product.
• Do not use this product to remove hazardous or explosive
material and vapours.
• This product is designed for installation in ceilings up to a
12/12 pitch (45 degree angle)
• Do not mount this product in kitchens.
• Do not release air into spaces within walls or into attics,
crawl spaces, or garages.
• Do not install this product in a ceiling with a thermal insula-
tion value more than R40.
Note:
Ducting has a strong effect on the air flow, noise and energy
use of the fan. Use the shortest, straightest duct routing pos-
sible 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 air
flow.
2.3 Personal protective equipment
Use personal protective equipment during all work on the
product.
• Approved eye protection
• Approved protective helmet
• Approved hearing protection
• Approved protective gloves
• Approved protective shoes
• Approved work clothing
2

3 Installation
3.1 To Set the Product Speed
Note:
For only the bathfan Select Fit SF50-80-100 and the SF50-
80-100L products.
Legend for Diagram
English Terminology Meaning
CONTROL BOX Control Box
SWITCH POSITION Switch Position
AIRFLOW (CFM) Airflow, Cubic Feet per
Minute
DUCT DIAMETER Duct Diameter
Note:
The toggle switch will adjust the upper fan speed from 50, 80,
or 100 Cubic Feet per Minute (CFM).
1To adjust the preselected airflow, adjust the control
switches according to Figure 1.
Note:
Dimensions are in inches (mm).
SF50-80-100 & SF50-80-100L
50 80 100
1 21 21 2
SWITCH
POSITION
1
AIRFLOW (CFM)
DUCT DIAMETER
SWITCH
POSITION
CONTROL BOX
4 (102)
3.2 To Set the Product Speed
Note:
For only the bathfan Select Fit SFC50-80-100H, SFC50-80-
100HO, SFC50-80-100LH, and the SFC50-80-100LHO
products.
Note:
This product uses a humidity sensor. It operates at the se-
lected low airflow speed continuously and will automatically
increase to the set high speed when the product detects the
conditions that follow:
• Humidity above the set position (30–80% relative humidity)
• Fast changes in humidity
After 20 minutes, the product returns to the selected low airflow
speed.
Legend for Diagram
English Terminology Meaning
CONTROL BOX Control Box
S Low Airflow Knob
H (%) Humidity Sensor Knob
SWITCH POSITION Switch Position
AIRFLOW (CFM) Airflow, Cubic Feet per
Minute
DUCT DIAMETER Duct Diameter
Max Maximum
OFF Off
Note:
Good to know information about the Low Airflow Knob (S):
• When the S knob is set between OFF–30 CFM, the low air-
flow speed will not operate.
• Can be set between 30 CFM and the applicable switch set-
ting from Figure 2
Note:
Good to know information about the Humidity Sensor Knob
(H (%)):
• When the H knob is set between OFF–30%, the humidity
sensor will not operate
Note:
The toggle switch will adjust the upper fan speed from 50, 80,
or 100 Cubic Feet per Minute (CFM).
1To adjust the preselected high airflow speed, change the
control switches according to Figure 2.
2To adjust the preselected low airflow speed, change the
Low Airflow Knob as necessary.
3To adjust the preselected humidity sensor, change the Hu-
midity Sensor Knob as necessary.
Note:
Dimensions are in inches (mm).
3

SFC50–80–100H, SFC50–80–100HO, SFC50–80–100LH,
& SFC50–80–100LHO
1 21 2
1 2
Max.
30
CFM
OFF
50%
70%
80
45 60
OFF
30
H (%)
2S
CONTROL BOX
50 80 100
4 (102)
SWITCH POSITION
DUCT DIAMETER
SWITCH
POSITION
AIRFLOW (CFM)
3.3 To Set the Product Speed
Note:
For only the bathfan Select Fit SFC50–80–100 and the
SFC50–80–100L products.
Legend for Diagram
English Terminology Meaning
CONTROL BOX Control Box
S Low Airflow Knob
T (min) Time Delay Knob
SWITCH POSITION Switch Position
AIRFLOW (CFM) Airflow, Cubic Feet per
Minute
DUCT DIAMETER Duct Diameter
Max Maximum
OFF Off
Note:
Good to know information about the Low Airflow Knob (S):
• When the S knob is set between OFF–30 CFM, the low air-
flow speed will not operate.
• Can be set between 30 CFM and the applicable switch set-
ting from Figure 3.
Note:
Good to know information about the Time Delay Knob (T
(min)):
• Can be set between 3–30 minutes
• When the T Knob is set between OFF–3 minutes, the time
delay setting will not operate.
Note:
The toggle switch will adjust the upper fan speed from 50, 80,
or 100 Cubic Feet per Minute (CFM).
To Set the Speed
1To adjust the preselected high airflow speed, change the
control switches according to Figure 3.
2To adjust the preselected low airflow speed, change the
Low Airflow Knob as necessary.
3To adjust the preselected time delay sensor, change the
Time Delay Knob as necessary.
Note:
Dimensions are in inches (mm).
SFC50–80–100 & SFC50–80–100L
50 80 100
1 21 21 2
Max.
30
CFM
OFF
50%
70%
OFF 30
12
21
3
3
ST (min)
CONTROL BOX
SWITCH POSITION
DUCT DIAMETER
SWITCH
POSITION
AIRFLOW (CFM)
4 (102)
3.4 To Mount the Product
Note:
Before this product is mounted, and if applicable, Fantech
recommends to install a Ceiling Radiation Damper (#98599)
to this product. To see how to install a radiation damper to
this product, refer to section 3.12 To Mount the Radiation
Damper.
Note:
This product is designed for installation in ceilings up to a 12/
12 pitch (45 degree angle).
Note:
This product is type IC (Inherently Protected).
Note:
To make sure the product can be set correctly anywhere be-
tween the framing, hanger bars have been supplied.
Note:
The hanger bars can be used on all types of framing, such
as: I-joists, standard joists, and truss construction.
4

1Before installation, remove the product from the packaging
and set the packaging aside.
2Identify the locations of Hole A & Hole B, and the channels
on the side of the product’s casing.
1
2
2
1
3
A
1. Hole B
2. Hole A
3. Casing Channel
3.5 To Mount with Mounting Holes
1Align the product as necessary to mount the product be-
tween the framing.
2Using (4) B screws, install the product onto the framing
through Holes A & B.
1
1
4
1. B Screw
3.6 To Mount with Hanger Bar and
Mounting Holes
1Engage (1) hanger bar with the appropriate channel on the
product’s casing.
2Adjust hanger bar as necessary to mount the product be-
tween the framing.
3Align the hanger bar tab with the inner side of the framing.
4Using (2) B Screws, install the product onto the framing
through Holes A & B.
5Using (1) B screw, attach the end tab of the hanger bar to
the framing.
6Using (1) A screw, attach the hanger bar onto the product’s
casing.
2a
1
12
3
5
1. B Screw
2. A Screw
3. Hanger Bar
3.7 To Mount to One Side of the
Framing
1Engage (1) hanger bar with the appropriate channel on the
product’s casing.
2Adjust hanger bar as necessary to mount the product be-
tween the framing.
3Align the hanger bar tab with the inner side of the framing.
4Using (2) B Screws, install the product onto the framing
through Holes A & B.
5Using (1) B screw, attach the end tab of the hanger bar to
the framing.
6Using (1) A screw, attach the hanger bar onto the product’s
casing.
1
2
1
3
6
1. B Screw
2. A Screw
3. Hanger Bar
3.8 To Mount to the Wall
Caution
To install the product on the wall, the duct
connector must face upwards.
5

B
Note:
The minimum installation distance between studs is 13.375
inches (340mm).
1Engage (1) hanger bar with the appropriate channel on the
product’s casing.
2Adjust hanger bar as necessary to mount the product be-
tween the framing.
3Align the hanger bar tab with the inner side of the framing.
4Using (2) B Screws, install the product onto the framing
through Holes A & B.
5Using (1) B screw, attach the end tab of the hanger bar to
the framing.
6Using (1) A screw, attach the hanger bar onto the product’s
casing.
1
2
3
1
7
4
1. B Screw
2. A Screw
3. Hanger Bar
4. Minimum Distance 13.375 inches (340mm)
3.9 To Plan the Duct Run
Warning
Do not install the product above or inside
the area within 45 degrees on either side of
any kind of cooking equipment. Refer to
Figure 8.
1
2
3
4
8
1. Floor
2. Cooking Equipment
3. Ceiling
4. Cooking Area
3.10 To Attach the Duct
Caution
To keep pressure losses to a minimum, and
promote sufficient airflow, observe the
following:
• Where possible, use short and straight
duct run lengths.
• Do not install the product with existing
duct.
• Do not install smaller than recommen-
ded duct on the product.
Note:
For quiet operation, and to maximize performance, Fantech
recommends the following:
• Use insulated flexible duct for quiet operation
• If rigid duct is used, use 1–3 feet (0.3–0.91 meters) of in-
sulated flexible duct.
• Insulate the duct to minimize energy losses.
• If installing in an unconditioned space, attach insulation to
the product to prevent condensation
1Using duct tape, attach the duct to the duct connector.
2Examine the duct around the duct connector to make sure
the seal is air tight.
9
6

3.11 To Manage the Duct Run
1Using duct tape, attach additional ducts to the product to
make sure air is released to the outdoors.
2Depending on the shortest & straightest direction to the
outdoors, place the duct run either through the roof or
through the wall.
3If the duct was installed through the roof, attach an applica-
ble roof cap to the end of the duct run.
4If the duct was installed through the wall, attach an applica-
ble wall cap to the end of the duct run.
5Place insulation around the product’s casing.
6With sealant, close all gaps between the framing and the
product’s casing.
1
2
3
4
5
6
7
8
9
10
10
1. Insulation
2. Product Casing
3. Roof Cap
4. Vertical Duct Run
5. Wall Cap
6. Round Elbows
7. Duct Tape Attached to Duct Joints
8. Horizontal Duct Run
9. Sealed Gaps
10. Power Cable
3.12 To Mount the Radiation
Damper
Note:
This Fantech Ceiling Radiation Damper (#98599) is sold
separately.
Note:
This radiation damper is UL classified for use in up to 3 hour
rated floor/roof ceiling designs.
Note:
Make sure the arrow on the nameplate of the radiation
damper points up.
Caution
To avoid damage to exterior finishes and to
allow for easier parts replacement, make
sure screws are installed from the inside.
1If the product has power, disconnect power at the source.
2Engage the hemmed edges of the radiation damper casing
onto the product’s casing.
11
3Align the (4) screw holes of the radiation damper with the
(4) screw holes of the radiation damper casing.
4With the arrow on the nameplate in the “up” position, en-
gage the radiation damper with the bottom of the radiation
damper casing.
12
5Using (4) screws provided with radiation damper assembly,
attach radiation damper to the radiation damper casing.
2
12
1
13
1. Screw Hole
2. Provided Screws
7

Note:
Before this product is mounted, make sure all personnel
knows that installing the radiation damper will increase the
size of this product. Adjust how this product is installed as
specified in the applicable procedure.
C
2
1
1. Screw Hole
2. Screw
4 Electrical connection
4.1 To do before the electrical
connection
• Make sure that the electrical connection agrees with the
product specification on the motor name plate.
• Make sure that the environment for electrical connection is
clean and dry.
• Make sure that the wiring diagram that is included with the
supply of the product agrees with the terminals in the con-
nection box.
4.2 To connect the product to the
power supply
• Complete the electrical connection for the motor. Refer to
the motor wiring diagram that is included with the product.
• Make sure that the cross section of the protective grounding
is equal to or larger than the cross section of the phase
conductor.
4.3 Motor Protection
This product has integrated motor thermal overload protection.
Reset the motor protection by disconnecting the fan from power
supply for 60 seconds.
4.4 Wiring Diagrams
Caution
Do not place the power or light switch
where it can be touched from a shower or
tub.
Note:
To connect power to this product, use a minimum of 14
American Wire Gauge (AWG) conductor with temperature
rating of at least 90° Celsius (190° Fahrenheit).
Note:
Refer to the following wiring diagrams to attach the wires of
the product to the wires of the house.
8

Legend for Diagram
English Terminology Meaning
ON/OFF SWITCH On/Off Switch
LINE IN Line In
LIGHT SWITCH Light Switch
SWITCH I Switch 1 — User Adjustable
Airflow
SWITCH II Switch 2 — Certified Airflow
Rating
NIGHT LIGHT Night Light
NIGHT LIGHT SWITCH Night Light Switch
FAN SWITCH Fan Switch
SWITCH BOX Switch Box
POWER SUPPLY 120V AC 120 Voltage Alternating Cur-
rent Power Supply
UNIT Unit
FAN Fan
LIGHT Light
FAN RECEPTACLE Fan Receptacle
WIRE PANEL Wire Panel
LIGHT RECEPTACLE Light Receptacle
BLACK (BLK) (Line) Black (Line)
WHITE (WHT) (Neutral) White (Neutral)
GROUND (GRD) Ground
BROWN (BRN) (Line) Brown (Line)
RED (Line) Red (Line)
BLUE (BLU) (Line) Blue (Line)
1Take 120 Volt Alternate Current (AC) housing wires to the
location of the product.
2Using UL-approved connectors only, attach the wires of
the product to the wires of the house.
SF50–80–100
FAN
ON/OFF
SWITCH
LINE
IN
BLK
WHT
GRD
WHT
GRD
BLK
SWITCH BOX UNIT
SF50–80–100
WIRE
PANEL UNIT
BLACK (BLK)
SWITCH BOX
FAN
SWITCH
POWER SUPPLY
120V AC
GROUND (GRD)
WHITE (WHT)
FAN
RECEPTACLE
SF50–80–100L
LINE
IN
FAN
BLK
BLK
BLU
RED
FAN
SWITCH
NIGHT LIGHT
SWITCH
NIGHT
LIGHT
SWITCH LIGHT
SWITCH BOX
WHT
WHT
UNIT
WHT
WHT
GRD GRD
LIGHT
SF50–80–100L
UNIT
BLACK (BLK)
NIGHT
LIGHT
LIGHT
SWITCH BOX
FAN
GROUND (GRD)RED
WHITE (WHT) BLUE (BLU)
FAN
RECEPTACLE
LIGHT
RECEPTACLE
WIRE
PANEL
POWER SUPPLY 120V AC
SFC50–80–100, SFC50–80–100H, SFC50–80–100HO
SWITCH I
SWITCH II
FAN
BRN
BLK
WHT
UNIT
SWITCH BOX
WHT
GRD GRD
LINE
IN
BLK
9

SFC50–80–100, SFC50–80–100H, SFC50–80–100HO
UNIT
BLACK (BLK)
SWITCH BOX
SWITCH I
POWER SUPPLY
120V AC
GROUND (GRD)
WHITE (WHT)
FAN
RECEPTACLE
WIRE
PANEL
SWITCH II
BROWN (BRN)
SFC50–80–100L, SFC50–80–100LH, SFC50–80–100LHO
FAN
NIGHT
LIGHT
LIGHT
BRN
BLU
RED
BLK
BLK
LINE
IN
WHT
WHT
GRD
UNIT
SWITCH BOX
GRD
SWITCH I
LIGHT SWITCH
NIGHT LIGHT
SWITCH
SWITCH II
SFC50–80–100L, SFC50–80–100LH, SFC50–80–100LHO
UNIT
BLACK (BLK)
SWITCH BOX
SWITCH I
POWER SUPPLY 120V AC
GROUND (GRD)
WHITE (WHT)
FAN
RECEPTACLE
WIRE
PANEL
SWITCH II
BROWN (BRN)
LIGHT SWITCH
NIGHT LIGHT
SWITCH
RED
BLUE (BLU)
4.5 To Attach the Ceiling Grille
Note:
Steps 1–2 are only for the bathfan Select Fit SFC50-80-
100HO and the SFC50-80-100LHO products. Skip to the fol-
lowing step for all other bathfan Select Fit products.
Note:
This product uses an occupancy sensor. It operates at the
selected low airflow speed continuously and will automati-
cally increase to the set high speed when the product de-
tects motion.
After twenty minutes, the product returns to the selected low
speed airflow.
The product will start sensing motion once the product’s
wires have been attached.
Legend for Diagram
English Terminology Meaning
Gesture Area Gesture Area
5–7 Feet 5 to 7 feet (1.5 to 2.1 meters)
Sensor 90° Sensor 90°
Note:
The Occupancy Sensor detects motion within 5 to 7 feet (1.5
to 2.1 meters) and within a 90 degree cone radius.
Note:
Once the occupancy grille has been attached to the prod-
uct’s control module, if the automatic switches are set to op-
erate, this product will operate at the certified airflow rate for
twenty minutes.
1Set the switch(es) to the OFF position.
2Attach the plug from the occupancy sensing ceiling grille
into the product’s control module.
Gesture
Area
D
5–7
Feet Sensor 90°
3Make a cut around the casing of the product.
4
5
For products with a light; attach the light plug from the ceil-
ing grille onto the wire panel.
6
Attach (2) grille springs into the correct holes of the ceiling
grille.
7
Align the ceiling grille with the casing of the product.
Push the ceiling grille into the casing of the product
correctly.
10

14
5 Operation
5.1 To Start the Product
Note:
To operate this product with automatic features (continuous
flow, humidity sensing, and time delay features), and to oper-
ate this product at the set user-adjusted airflow rate, observe
the steps that follow:
1Set Switch I to the ON position and set Switch II to the OFF
position.
2After a soft start (5–10 seconds), make sure that the prod-
uct works as intended.
Note:
To operate the product manually with one switch, Switch I
and switch II may be wired to the same switch.
Note:
To operate this product manually with a switch (where ON
designates high speed), and to operate this product at the
set certified airflow rate, observe the steps that follow:
1Set the ON/OFF / Fan switch (or both Switch I and Switch
II) to the ON position.
2After a soft start (5–10 seconds), make sure that the prod-
uct works as intended.
5.1.1 To Stop the Product
1Set the switch(es) in the OFF position.
5.2 Sequence of Operations
Continuous Flow Feature
Note:
For only the bathfan Select Fit SFC50–80–100 and the
SFC50–80–100L products.
This feature sets the speed of the product’s airflow to the low
airflow speed and holds the low airflow speed continuously if
switch I is set to the ON position and if switch II is set to the
OFF position.
Note:
For only the bathfan Select Fit SFC50–80–100H and the
SFC50–80–100LH products.
This feature sets the speed of the product’s airflow to the low
airflow speed and holds the low airflow speed continuously if
switch I is set to the ON position, if switch II is set to the OFF
position, and if relative humidity is below the set level.
Note:
For only the bathfan Select Fit SFC50–80–100LHO product.
11

This feature sets the speed of the product’s airflow to the low
airflow speed and holds the low airflow speed continuously if
switch I is set to the ON position, if switch II is set to the OFF
position, if relative humidity is below the set level, and if the oc-
cupancy sensor does not detect motion.
Time Delay Feature
Note:
For only the bathfan Select Fit SFC50–80–100 and the
SFC50–80–100L products.
This feature keeps the product at the certified airflow rate (high
speed) for an extended interval of time (3–30 minutes) after
switch II is set to the OFF position. The time delay knob can al-
so be set to the OFF (OFF–3 minutes) position to disable this
feature.
Humidity Feature
Note:
For only the bathfan Select Fit SFC50–80–100H, SFC50–
80–100LH, and the SFC50–80–100LHO products.
This feature activates and holds the certified airflow rate (high
speed) when relative humidity reaches the set level (30-
80%). The product returns to the set low airflow speed 20 mi-
nutes after humidity has dropped below the set level (30–80%).
The humidity sensor knob can also be set to the OFF (OFF–
30%) position to disable this feature.
Occupancy Feature
Note:
For only the bathfan Select Fit SC110-130-150LHO product.
This feature activates and holds the certified airflow rate (high
speed) for 20 minutes after motion is no longer detected. When
switch I is ON, the product will automatically start sensing
motion.
6 Troubleshooting
12

Problem Cause Solution
The product operates too often when
environmental conditions change.
Changing of seasons, temperature, or
other conditions.
The Humidity Sensor Knob may need to
be adjusted. To adjust the Humidity
Sensor Knob, refer to the 6.1 To Adjust
the Humidity Sensor section.
The product’s blower needs to be
replaced. The blower assembly no longer works.
A new blower will need to be purchased.
To mount the blower assembly, refer to
the 6.2 To Replace the Blower
Assembly section.
The product no longer works, and I want
to replace the product. The product no longer works.
To install a product where the old product
is, observe the steps that follow:
1. Make a cut on the ceiling where the
old product is.
2. Remove the product.
3. Working backwards from the 3
Installation section, install the new
product.
6.1 To Adjust the Humidity Sensor
Note:
If the product operates too often when environmental condi-
tions change, due to changing of seasons, temperature, or
other conditions, the Humidity Sensor Knob may need to be
adjusted. To adjust the Humidity Sensor Knob, observe the
steps that follow.
1If the product has power, disconnect power at the source.
2If the ceiling grille has been attached, remove the ceiling
grille temporarily.
3Adjust the Humidity Sensor Knob as necessary.
4Reconnect the power to the power supply.
5Test the product by starting the shower or another humidity
source. Do this until the product starts.
6Repeat the steps above as necessary.
7When satisfied with the function of this product, reattach
the ceiling grille.
6.2 To Replace the Blower
Assembly
1If the product has power, disconnect power at the source.
2Remove the ceiling grille from the product’s casing and set
aside.
3If applicable, remove the (4) screws that attach the radia-
tion damper to the damper casing.
4If applicable, remove the radiation damper and set aside.
5Detach the blower assembly cable from the product.
6Remove the (3) screws that attach the blower assembly to
the product casing.
7Remove and correctly dispose of the old blower assembly.
8Align the opening of the new blower assembly with the
opening of the product casing.
9Using the (3) supplied blower assembly screws, mount the
new blower assembly inside of the product casing.
10 Attach the blower assembly cable to the product.
11 If applicable, using the (4) removed screws, reattach the
radiation damper.
12 Reattach the ceiling grille to the damper casing.
11
1
2
2
15
1. Screw Hole
2. Supplied Screws
13

7 Maintenance
Warning
Set the installed switch(es) in the OFF
position before you do the maintenance
unless the instructions tell you differently.
Make sure that the switch(es) is not
accidentally set in the ON position.
7.1 To Maintain the Product
Caution
If the product suddenly starts to make loud
noises, or starts to vibrate in an unusual
way, stop the product immediately. Contact
a Fantech representative as the product
will need to be replaced.
Note:
For quiet operation, long life, and to maximize performance,
observe the following:
• Remove grille before carefully cleaning interior of product
with a vacuum with a soft brush attachment or a soft cloth.
• No other maintenance is required.
8 Technical data
8.1 Technical Data Overview
Voltage, Motor Power, Frequency Refer to the mo-
tor nameplate on
the blower
assembly.
Motor data Refer to the mo-
tor nameplate or
the technical
documentation
from the motor
manufacturer.
8.2 Product Dimensions
D
A
B
C
EF
Note:
Dimensions are given in inches (mm).
14

A B C D E F
bathfan Select Fit SF50-
80-100, #484305
10–1/4 (260) 4 (102) 10–1/4 (260) 3–3/8 (86) 13–3/4 (349) 13 (330)
bathfan Select Fit SF50-
80-100L, #484306
bathfan Select Fit SFC50-
80-100, #484307
bathfan Select Fit SFC50-
80-100H, #484308
bathfan Select Fit SFC50-
80-100HO, #484309
bathfan Select Fit SFC50-
80-100L, #484310
bathfan Select Fit SFC50-
80-100LH, #484311
bathfan Select Fit SFC50-
80-100LHO, #484312
15

Document in original language 2023-04-03
484287 - 011
© Copyright Fantech
All rights reserved
Fantech reserves the rights to alter their products without notice. This also applies to products already ordered, as long as it
does not affect the previously agreed specifications.
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