Broan SMSK102, SMSK103 Instructions Manual

MODELS SMSK102 • SMSK103

Broan SmartSense®Intelligent Ventilation System

READ AND SAVE THESE INSTRUCTIONS

WARNING

Page 1

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 de

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vice, 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.

PHASE COUPLER INSTALLATION

LINE

MAIN

220V, 15A

DOUBLE-POLE

CIRCUIT BREAKER

PHASE

COUPLER

BLACK

RED
GRD

BLACK

RED

GRD

WHITE

15
15

GROUND BUS BAR

CIRCUIT BREAKER PANEL

120VAC

1. At the service entrance, shut off all power to the breaker box. In
some homes, this will be the MAIN breaker in the CIRCUIT BREAKER
PANEL. If there isn’t a main power shut OFF (master switch) or you
can’t find it do not attempt the work. Call a licensed electrician.

2. Remove the circuit breaker panel cover.

3. Use a circuit tester or AC voltmeter to be sure the circuits are OFF.
Check to make sure that there is no voltage from the screw termi
nals of several circuit breakers to the ground or neutral bus bar.

4. The PHASE COUPLER will need to be wired directly to two circuit
breakers. It is a violation of the electrical code to use an existing
breaker that already has a wire connected to it. Install a new 220V,
15A, DOUBLE-POLE CIRCUIT BREAKER. These breakers have a bar
between the paddles so that if one breaker detects any overloaded
condition, both will trip.

TIP: If you don’t have any space in your panel for new circuit

breakers, use a quad-pole breaker. You will need to remove two ex
isting breakers that are adjoining each other. The quad breaker will
need to have two of the poles rated for the amperage as the ones
removed. For example, if you removed two 20-amp breakers, you
would need a 20/15/15/20 quad breaker. The two 15-amp poles

Black

GROUND

Bare

Copper

NEUTRAL

White

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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 manufactur
er’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 electri
cal wiring and other hidden utilities.

6. This unit must be grounded.

will be for the new phase coupler while the two 20-amp
poles will be for the circuits that were connected to the
old breakers. A home improvement or electrical supply
store should have a good assortment of these.

5. Install a single-gang electrical box for the phase cou
pler near the breaker box. Use either a metal or plastic
outlet box that complies with local electrical ordinanc

To
SWITCHES
and
VENTILATORS

es.

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6. Run electrical cable (minimum 75

C rated) between
the circuit breaker panel and the outlet box for the
phase coupler. The cable should be secured with a
clamp or wire nail to the wall stud within a few inches
of the mounting box. Use 14/3 cable, which has three
conductors plus a ground wire.

7. Use wire nuts to connect BLACK to BLACK, RED to
RED, GROUND (bare wire) to GROUND (bare wire).

WHITE wire is not used. Cap-off both ends of the

The
WHITE wire with a wire nut.

8. At the circuit breaker box, connect the ground wire to the GROUND
BUS BAR. Some panels do not have a separate ground bus bar so
the ground wire must be connected to the neutral bus bar. The
ground wire must be connected for safety purposes.

9. Connect the BLACK wire to one of the 15-Amp circuit breakers.

10. Connect the RED wire to the other 15-Amp breaker.

11. Check to be sure that all the wires are securely fastened, no

copper is exposed (except for the ground wire) and all screws
are tight. You can confirm that the phase coupler is wired to the
correct breakers if you can read 220 to 240 volts AC between
the two breakers when the power is turned on. If there is no
voltage between the two breakers, check to be sure that both of
the breakers and the master breaker are “ON”. If there is still no
voltage between the two breakers, then they are probably on the
same leg, and you will have to select another breaker for one of
the wires.

12. Replace the circuit breaker panel cover.

13. Restore power to the main breaker.

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CONTROL INSTALLATION

MODELS SMSK102 • SMSK103

Page 2

LINE

Black

LINE

Black

To

MAIN

CIRCUIT

BREAKER

PANEL

GROUND

Bare

Copper

NEUTRAL

White

GROUND

Bare

Copper

NEUTRAL

GROUND

Green

White

WHITE

FAN

CONTROL OPERATION

MASTER
or SLAVE
CONTROL

LOAD
Red

BLACK

Install the controls and wire them as shown. Use the following guidelines:

• IMPORTANT:
80 cfm fans must use SMSC80 control.
110 cfm fans must use SMSC110 control.

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• Use minimum 75

C rated electrical wiring cable.

• The controls install like normal switches except for the need of a neutral wire. Run
the neutral wire to each wall control location. This may be a code requirement or
a regular practice in your area - but unless explicitly specified, it may be omit
ted. This control will consume energy and needs a neutral wire to complete the
circuit.

• Specify the installation of deep J-boxes in all locations where the communicating
controls will be used. While the Broan SmartSense

®

controls will fit in the spacing
offered by all North American electrical boxes, the deep models have extra work
ing space and make the installation go a little easier. Deep boxes only cost a few
cents more than normal depth models. Look for single-gang boxes that are 22 cu.
in. or higher and double-gang boxes that are 36 cu. in. or higher.

• ALL controls and coupler

must be grounded.

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HOW THE LED OPERATES

When the system is running the fan automatically, the LED will be
off with a quick blink each second. The control also uses this mode
to indicate when it is in the Program Mode.

When the control is off (turned off manually or by the program), the
status LED will be not illuminated.

When the control is manually turned on, the LED will be on.

HOW THE MASTER & SLAVE CONTROLS WORK

The controls in a system are defined as a Master and Slaves. Any of
the SMSC080 or SMSC110 controls can be designated as a Master.
All controls initially (out-of-the-box) function as a Master.

Master Control

The Master is the control used to initiate the linking and program
ming process. Once a control is linked to another control, a Master
Slave relationship occurs.

The Master control should always be installed in the home’s master
bathroom. Installing the Master in the master bathroom makes it
easier for the homeowner to determine the location of the Master
control. Only the Master control can place the system in vacation
mode, disable mode, change the system level, etc.

The Master control does all the calculations required to determine
how much fan on time is needed to meet a home’s ventilation re
quirements. Ventilation requirements are determined by the system
level setting. The other controls (Slaves) will be linked to the Master
so that they only operate when commands are received from the Mas
ter control or when manually operated.

Slave Controls

Slave controls accept instructions from the Master control. Slave
controls also communicate to the Master when the home’s occupants
manually operate fans. The time that the fans are operated manually
is credited towards the home’s ventilation requirements determined
by the system level setting.

HOW TO FORM A NETWORK

Controls are linked together so that automated commands for the
Broan SmartSense
Slave controls. Slave controls will also communicate to the Master
when the homes occupants manually operate fans. The time that the
fans are operated manually is credited towards the homes ventilation
requirements determined by the system level setting.

Program Mode

At the Master control (in the master bathroom), use a screwdriver tip
to gently press and hold the SET button for 4 seconds, then release.
The SET button is the clear button at the bottom of each control
(reference drawing of controller face). LED will flash continuously to
indicate Program Mode. Repeat this procedure if LED does not flash

­continuously.

Linking Controls (Slaves)

1. While in Program Mode, press and release SET button on Master

control gently with a screwdriver (approx. 1 sec.). A flashing LED
will indicate if the Master control is in Program Mode.

2. At the Slave control use a screwdriver tip to gently press and hold

SET button until the Slave fan turns on (approx. 3 sec.). Release

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SET button. When a link is established both the Master and Slave
fans will turn on.

3. The Master’s fan will turn off automatically after approx. 15 sec.

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4. After the Master’s fan turns off, press the Slave control’s paddle

OFF to turn the Slave fan off.

5. Repeat steps 2 through 4 to link additional Slaves.

6. When you have finished linking all Slaves, press and release SET

button once at the Master control to exit Program Mode. Master
control LED will turn off after exiting Program Mode.

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network are sent between Master controls and