Broan XB90HC, XB110HC Installation Manual

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XB90HC n XB110HC

X1 | Single-Speed
Ventilation Fan
with Humidity Sensor

INSTALLATION GUIDE

Easy installation in both
new construction and retrofit

© 2012 Broan-NuTone LLC

Table of Contents

Warnings and Cautions 2
Typical Installation 2
New Construction Installation 3
Retrofit Installation 7
Operation 12
Cleaning and Maintenance 12
Troubleshooting 12
Service Parts 13
Warranty 13

Page 2

!

XB90HC n XB110HC Installation Guide

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS, OBSERVE THE FOLLOWING:

1. Use this unit only in the manner intended by the manufacturer.
If you have questions, contact the manufacturer at the address
or telephone number listed in the warranty.

2. 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.

3. Installation work and electrical wiring must be done by a
qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction codes and
standards.

4. 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
manufacturer’s guideline and safety standards such as those
published by the National Fire Protection Association (NFPA),
and the American Society for Heating, Refrigeration and
Air Conditioning Engineers (ASHRAE), and the local code
authorities.

5. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities.

6. Ducted fans must always be vented to the outdoors.

7. Use only ON/OFF switch, mechanical timer or relay-switched
control.

8. Acceptable for use over a tub or shower when connected to
a GFCI (Ground Fault Circuit Interrupter) - protected branch
circuit.

9. This unit must be grounded.

CAUTION

1. For general ventilating use only. Do not use to exhaust

hazardous or explosive materials and vapors.

2. This product is designed for installation in flat ceilings. Sensor
will not function reliably if product is not installed in flat ceiling.
DO NOT MOUNT THIS PRODUCT IN A WALL.

3. To avoid motor bearing damage and noisy and/or unbalanced
impellers, keep drywall spray, construction dust, etc. off power
unit.

4. Please read specification label on product for further
information and requirements.

NOT FOR USE IN A COOKING AREA

Do not install above or inside this area

45° 45°

Cooking
Equipment

Floor

Typical Installation

• Installation is the same for:

Joists I-Joists Trusses

• Fits in 2" x 8" ceiling construction.

• Infinitely adjust the fan position

between joists from 14" to 24"
on center.

The ducting from this fan to the outside of the building has a strong effect on the air flow, noise and en­ergy use of the fan. Use the shortest, straighest 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.

6-inch round rigid metal duct is recommended for best performance.

HOUSING

POWER
CABLE*

Seal gaps

around

Housing.

*Purchase
separately.

INSULATION*

(Place around and

over Fan Housing.)

FAN

ROUND

DUCT*

Seal duct

joints with

tape.

OR

ROUND

ELBOWS*

ROOF CAP*

(with built-in

damper)

Keep duct

runs short.

WALL CAP*

(with built-in

damper)

Page 3

New Construction Installation

XB90HC n XB110HC Installation Guide

Tools needed

• Power screwdriver with a Phillips bit

• Phillips screwdriver

• Flathead screwdriver

• Pliers

• Wire insulation stripper

• Wire cutter

Remove Packaging

1

Parts Bag holds
Knockout Plate
and six (6)
screws

Materials needed

• 6" round metal ducting recommended for best performance.
Use of other ducting is acceptable but may impact performance.

• Roof cap or wall cap (built-in damper recommended)

• Tape to seal duct connections

• Electrical wiring and supplies per local code requirements

Punch out Mask from

packaging. See Step 6.

Remove
Instruction
Sheet

Install

2

2

Mounting
Frame

1

4

3

Page 4

New Construction Installation

Snap-in and

3

Secure Housing

2

snap!

XB90HC n XB110HC Installation Guide

1

4

Attach Duct Connector and Ducting

4

Top and bottom flanges
go outside Housing

Insert tab into slot
inside Housing

1

6" Ducting

Tape

Screws from Parts Bag

3

3

4" Ducting

Tape

Position Housing
between joists and
crimp channel on both
sides of Mounting Frame
to lock Housing in place.

Do not crimp Housing.

Screw from

2

Parts Bag

Tape

6" to 4" Reducer provided in select models

Page 5

LINE IN

BLACK

RED

ORANGE

New Construction Installation

Connect Wires and Install Knockout Plate

5

• Run 120VAC electrical wiring to the installation location.

• Use proper UL-approved connectors to secure wiring to the Knockout Plate provided in Parts Bag.

• Connect wires as shown in wiring diagram.

Attach cable clamp to Knockout

1

Plate. Knockout Plate mounts to

outside of Housing and may be

oriented as desired.

Connect wires

2

XB90HC n XB110HC Installation Guide

3

4

Screw from

Parts Bag

STANDARD OR MULTI-

FUNCTION WALL SWITCHES

SENSOR/
CONTROL

BLK

20 VAC

WHT
GND

WHITE

MANUAL

ON

SWITCH*

SENSOR

CONTROL

SWITCH*

purchase separately

*

MANUAL-ON

BROWN

SWITCH BOX

120 VAC

LINE IN

14/3

(IF ALL

WALL SWITCH

OPTIONS

ARE USED)

RED
BLK
WHT
GND

GROUND
(green or bare)

KNOCKOUT

PLATE

BLK

ORG

BRN

RECEPTACLES

RED

FAN

BLK

SENSOR/
CONTROL

WHT

• See OPERATION section on page 12
for details.

• SENSOR/CONTROL switch turns
humidity control on for automatic
operation and off for fan cleaning and
maintenance purposes.

• MANUAL-ON switch directly turns fan
on/off.

• MANUAL-ON switch not required to
manually turn fan on (see page 10).

• SENSOR/CONTROL switch may be
located where it is not easily accessed
for everyday usage; it may need to
be labeled and located where it can’t
be turned on without being seen from
fan to comply with local and national
codes.

Page 6

New Construction Installation

Insert Mask and

6

Finish Ceiling

• Install ceiling material.

• Cut out around Housing.

CAUTION

IN ORDER TO PREVENT MOTOR/CONTROL DAMAGE:

If the blower was unplugged, power must be
disconnected (see page 2, WARNING item 2)
before inserting motor plug into control assembly.

XB90HC n XB110HC Installation Guide

Mask protects unit

during construction.

Remove before
installing Grille.

Install Grille

7

Plug in
Sensor

See Page 12 for Operations, Cleaning and Maintenance, and Troubleshooting.

1

2

3

Page 7

Retrofit Installation

XB90HC n XB110HC Installation Guide

Tools needed

• Power screwdriver with a Phillips bit

• Phillips screwdriver

• Flathead screwdriver

• Pliers

• Wire insulation stripper

• Wire cutter

• Ruler

• Pencil

• Drywall saw

• Claw hammer or pry bar

• Utility knife

Materials needed

• Tape to seal duct connections

• Existing rigid duct will require the

addition of a short length of flexible duct

• Electrical wiring and supplies per
local code requirements

Remove Packaging

1

Parts Bag holds
Knockout Plate
and six (6)
screws

Remove
Instruction
Sheet

Punch out Mask from

packaging. See Step 12.

Switch Off Power

2

WARNING

Before removing existing fan, 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.

Enlarge Ceiling Opening and Remove Existing Fan

3

12" (30.5 cm)

1

11" (27.9 cm)
parallel with joists

Existing ductwork and
wiring left in place

Examine Wiring

4

Examine the existing wiring to make sure it is not damaged. If any damage is found,
DO NOT CONTINUE INSTALLATION of this product. Contact a qualified person(s) for repair.

2

Page 8

Retrofit Installation

Remove Blower Assembly

5

2

Both sides

Remove Wiring Panel

6

XB90HC n XB110HC Installation Guide

1

3

Set aside
Wiring Panel

Set aside
Blower Assembly

Insert

7

Mounting
Frame

1

Set aside
screw

4

2

3

3

5

1

Remove screws from
Mounting Frame
and set aside

2

Bend up
four tabs

Page 9

Retrofit Installation

Secure

8

Mounting
Frame

Snap-in Housing

9

XB90HC n XB110HC Installation Guide

Screws set

aside

in Step 7

2

10

Pull existing
ductwork
into Housing

1

Pull existing wiring into
Housing as it is inserted
into Mounting Frame

snap!

Attach Ducting and Duct Connector

1

4

Screw from

Parts Bag

3

Insert tab into
slot inside
Housing

6" Ducting

Tape

2

4" Ducting

6" to 4" Reducer provided in select models

Tape

Tape