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Dimmer Installation Instructions
Please Leave for Occupant
030-953
Incandescent/Magnetic Low-Voltage Dimmer
VT-600:
120 V~ 60 Hz 600 W (600 VA / 450 W)
VT-600M:
120 V~ 60 Hz 600 W (600 VA / 450 W)
VT-1000M:
120 V~ 60 Hz 1000 W (1000 VA / 800 W)
Companion Dimmer
VT-AD:
120 V~ 60 Hz 8.3 A
Important Notes:
Please read before installing.
1.
Note: To avoid overheating and possible damage to other equipment, do not use to control receptacles, fluorescent lighting fixtures, motor-operated appliances, transformer-supplied appliances, or electronic low-voltage lighting fixtures.
2.
Install in accordance with all national and local electrical codes.
3.
When “no grounding means” exists within the wallbox, then the NEC
®
2005, Article 404-9 allows a Dimmer without a grounding connection to be installed as a replacement, as long as a plastic, noncombustible wallplate is used. For this type of installation, cap or remove the green ground wire on the Dimmer, and use an appropriate wallplate, such as a Lutron
®
Vierti
™ series wallplate.
4.
Note: Operating a dimmed magnetic low-voltage circuit with all lamps inoperative or removed may result in current flow in excess of normal levels. To avoid possible transformer overheating or failure, Lutron strongly recommends the following:
• Do not operate without operative lamps in place.
• Replace burned out lamps as soon as possible.
• To prevent premature failure due to overcurrent, use transformers with thermal protection, or fused primary transformer windings.
5.
Do not paint Dimmers or Companion Dimmers (VT-AD).
6.
Vierti Dimmers are not compatible with standard 3-way switches. Use only with Companion
Dimmers (VT-AD).
7.
Companion Dimmers (VT-AD) cannot be used individually but must be used in conjunction with a Vierti Dimmer in a 3-way/ 4-way application.
8.
In any 3-way / 4-way circuit, use only one Vierti Dimmer with up to four Companion Dimmers.
9.
DO NOT use Vierti dimmers for compact Fluorescent (Energy Saver) lamps.
10. The Vierti Dimmer may not work with dioded lamps (Sylvania™ Designer 16 or Philips
®
PAR-16).
11. Operate between 32 °F (0 °C) and 104 °F (40 °C).
12. The Vierti Dimmer may feel warm to the touch during normal operation.
13. Recommended wallbox depth is 2.5 in. (64 mm) minimum.
14. Maximum total wire length between all Vierti devices is 100 ft (30.5 m).
15. For new installations, install a test switch before installing the Dimmer, or test with a breaker.
Multigang Installation
Lutron Vierti wallplates are available in one to six gang versions. When combining controls in a wallbox, derating is required; see the Derating Chart below.
Note: Companion Dimmers do not need to be derated.
Breaking Side
Sections
Do not remove outside sections.
Each control has inside section removed.
Middle control has two side sections removed.
Derating Chart
Dimmer Type
No Sides
Removed
Maximum Load
1 Side
Removed
2 Sides
Removed
Incandescent/Halogen
600 W
1000 W
Magnetic Low-Voltage
600 VA / 450 W*
1000 VA / 800 W*
600 W
1000 W
500 W
800 W
400 W
650 W
600 VA / 450 W*
1000 VA / 800 W*
500 VA / 400 W*
800 VA / 650 W*
400 VA / 300 W*
650 VA / 500 W*
* The maximum lamp wattage is determined by the efficiency of the transformer, with 70—85% as typical. For actual transformer efficiency, contact either the fixture or transformer manufacturer. The total VA rating of the transformer(s) shall not exceed the VA rating of the Dimmer.
Lutron Electronics Co., Inc.
7200 Suter Road
Coopersburg, PA 18036-1299 U.S.A.
Made and printed in U.S.A. 1/08 P/N 030-953 Rev. B
Lutron
Technical Support Center 1-800-523-9466 24 hrs / 7 days www.lutron.com
Preparing for Installation
1
Turning Power OFF
• Turn power OFF at circuit breaker (or remove fuse).
Removing the Wallplate and the Switch
• Remove the wallplate and the switch mounting screws.
• Carefully remove the switch from the wall (do not remove wires).
Disconnecting the Switch Wires
Important Note: Your wall switch may have two wires attached to the same screw (see illustrations below for examples). Tape these two wires together before disconnecting. When rewiring, connect these wires to the Dimmer the same way they were connected to the removed switch.
One wire in the backwired hole and one to the screw.
Tape together
One continuous wire to the screw.
Wiring the Dimmer
Important Wiring Information
When making wire connections, follow the recommended strip lengths and combinations for the supplied wire connector. Note: All wire connectors provided are suitable for
copper wire only.
For aluminum wire, consult an electrician.
Wire Connector:
Use to join #14 AWG or #12 AWG ground wire to #18 AWG Dimmer ground wire.
Trim or strip wallbox wires to the length indicated by the strip gauge on the back of the Dimmer.
Push-in Terminals: Insert wires fully.
Note: Push-in terminals are for use with #14 AWG solid copper wire only.
DO NOT use stranded or twisted wire.
Twist wire connector tight.
or
Screw Terminals: Tighten securely.
Screw terminals are for use with
#12 AWG or #14 AWG solid copper wire only. DO NOT use stranded or twisted wire.
• For installations involving more than one control in a wallbox, refer to Multigang
Installations before beginning.
Identifying the Circuit Type
3a - Single-Location Control
One switch controlling a light fixture.
This will be a single-pole switch. The switch will have two insulated wires connected to two screws of the same color plus a bare copper or green insulated wire to a green ground screw.
Ground
(bare copper or green wire)
3b - Two-Location Control
Ground
(bare copper or green wire)
Different colored screw (COMMON)
Tag
Two switches controlling a light fixture.
Both will be 3-way switches. Each switch will have insulated wires connected to three screws plus a bare copper or green insulated wire to a green ground screw. One of these wires is connected to a screw of a different color (not green) or labeled COMMON.
Tag this wire on both switches to identify when rewiring.
3c - Three or More-Location Control
Note: Screw placement may be different on your switch.
Same colored screw (or marked IN or
OUT)
Ground
(bare copper or green wire)
Tag
Three or more switches controlling a light fixture.
Two will be 3-way switches and any others will be 4-way switches. Tag the wires of the two
3-way switches as in the Two-Location figure above. The 4-way switch will have insulated wires connected to four screws plus a bare copper or green insulated wire to a green ground screw.
Tag two insulated wires that are connected to opposite color screws. Follow this procedure for each 4-way switch.
Screw Terminals:
Turn screws to loosen.
Push-in Terminals:
Insert screwdriver.
Pull wire out.
Installing the Dimmer
Removing the Front Wallplate
Tape together
Continuous Wire:
Turn screw to loosen.
• The Dimmer has a pre-installed Vierti wallplate. Remove the wallplate before proceeding with the installation.
Grasp Vierti wallplate at top and pull forward to remove.
Removing the Front Module
• The Dimmer has a pre-installed front module containing LEDs. Before proceeding with the installation, grab the module and pull it straight out. Removing the Front Module will expose the mounting holes.
Grasp front module on sides and pull to remove.
7a - Single-Location Control - Single-Pole Unit
Brass screw
Brass screw
Dimmer
Green wire Ground
Wiring Dimmer VT-600:
• Connect the green ground wire on the
Dimmer to the bare copper or green ground wire in the wallbox. (See Important Note 3.)
• Connect either of the wires, disconnected from the removed switch, to a brass screw terminal on the Dimmer.
• Connect the remaining wire, disconnected from the removed switch, to the other brass screw terminal on the Dimmer.
This operation has now been completed.
Reference Wiring Diagram
Live
120 V~
60 Hz
Brass
Brass
Green
Dimmer
Ground
Light
Fixture
Neutral
7b - Single-Location Control - Multi-Location Unit
Brass screw Blue screw
Black screw
Live
Dimmer
Green wire
Reference Wiring Diagram
Brass
Black
Blue
Ground
Light
Fixture
Wiring Dimmers VT-600M, VT-1000M:
• Tighten the blue screw terminal on the
Dimmer. The blue screw is not used in a single-pole circuit.
• Connect the green ground wire on the
Dimmer to the bare copper or green ground wire in the wallbox. (See Important
Note 3.)
• Connect either of the wires, disconnected from the removed switch, to the brass screw terminal on the Dimmer.
• Connect the remaining wire, disconnected from the removed switch, to the black screw terminal on the Dimmer.
This operation has now been completed.
120 V~
60 Hz
Green
Ground
Neutral
Dimmer
7c - Two-Location Control
One location will be replaced with a Dimmer and the other with a Companion Dimmer.
Brass screw
Dimmer
Blue screw
Black screw
Tag
Green wire
Ground
Wiring Dimmers VT-600M, VT-1000M:
• Connect the green ground wire on the
Dimmer to the bare copper or green ground wire in the wallbox. (See Important Note 3.)
• Connect the tagged wire, disconnected from the removed switch, to the black screw terminal on the Dimmer.
• Connect one of the remaining wires, disconnected from the removed switch, to the
brass screw terminal on the Dimmer.
• Connect the remaining wire, disconnected from the removed switch (note wire color), to the blue screw terminal on the Dimmer.
Brass screw
Tag
Blue screw
Companion
Dimmer
Ground
Green wire
Black screw
Wiring Companion Dimmer (VT-AD):
• Connect the green ground wire on the
Companion Dimmer to the bare copper or
green ground wire in the wallbox.
(See Important Note 3.)
• Connect the tagged wire, disconnected from the removed switch, to the black screw terminal on the Companion Dimmer.
• Connect the same color wire connected to the
blue screw terminal on the Dimmer (wire color noted above) to the blue screw terminal on the Companion Dimmer.
• Connect the remaining wire, disconnected from the removed switch, to the brass screw terminal on the Companion Dimmer.
This operation has now been completed.
Reference Wiring Diagram
Brass screw
Blue screw
Tag
Dimmer or
Companion
Dimmer
Ground
Black screw
Green wire
Replace the 3-way switches:
• Connect the green ground wire on the
Dimmer/Companion Dimmer to the bare copper or
green ground wire in the wallbox. (See Important
Note 3.)
• Connect the tagged wire, disconnected from the removed switch, to the black screw terminal on the Dimmer/Companion Dimmer.
• Connect the same color wire, connected to the blue screw terminal on the Dimmer/Companion Dimmer
(that replaced a 4-way switch; wire color noted previously) to the blue screw terminal on the
Dimmer/Companion Dimmer.
• Connect the remaining wire, disconnected from the removed switch, to the brass screw terminal on the Dimmer/Companion Dimmer.
This operation has now been completed.
Reference Wiring Diagram
Brass Blue
Live
120 V~
60 Hz
Black
Green
Ground
Brass
Black
Green
Blue
Ground
Brass
Black
Green
Blue
Light
Fixture
Ground
Neutral
Mounting the Dimmer or Companion Dimmer(s) to the Wallbox
• Form wires carefully into the wallbox, mount and align Dimmer (and Companion Dimmer).
• Install the front module and the wallplate.
Note: Do not overtighten mounting screws.
Live
120 V~
60 Hz
Brass
Black
Green
Blue
Ground
Brass
Black
Green
Blue
Ground
Light
Fixture
Neutral
7d - Three or More-Location Control
One location will be replaced with a Dimmer and the others with Companion Dimmers.
Only one Dimmer can be used with up to four Companion Dimmers.
Brass screw Blue screw Tag
Dimmer or
Companion
Dimmer
Black screw Green wire
Ground
Replace the 4-way switch(es):
Note: 4-way switches may be replaced with either a Dimmer or a Companion Dimmer.
• Connect the green ground wire on the
Dimmer/Companion Dimmer to the bare
copper or green ground wire in the wallbox.
(See Important Note 3.)
• Connect both of the tagged wires (note their color), disconnected from the removed
4-way switch, to the blue screw terminal on the Dimmer/Companion Dimmer (one wire to the screw and the other to the push-in terminal).
• Connect one of the remaining wires, disconnected from the removed switch, to the black screw terminal on the
Dimmer/Companion Dimmer.
• Connect the remaining wire, disconnected from the removed switch, to the brass screw terminal on the Dimmer/Companion
Dimmer.
Plug in front module.
Snap on wallplate.
Turning Power ON
• Turn the power ON at the circuit breaker (or replace the fuse).
1 0
Dimmer Operation
Turning the System ON/OFF
Turn the system on by pushing the Front Accessible Service Switch (FASS
TM
) up. Pulling the FASS switch down, removes power from the load.
Note: The FASS switch is not used during normal operation.
System ON
FASS Switch
System OFF
Important Notice:
To replace bulb(s), power may be conveniently removed by pulling the FASS switch down on the Dimmer or any Companion Dimmer. For any procedure, other than routine lamp replacement, power must be turned OFF at the main electrical panel.
Minimum Load Chart*
Single-Pole
One Dimmer and one Companion Dimmer
One Dimmer and two Companion Dimmers
One Dimmer and three Companion Dimmers
One Dimmer and four Companion Dimmers
40 W / VA
60 W / VA
80 W / VA
100 W / VA
135 W / VA
* Vierti Dimmers and Companion Dimmers have minimum load requirements. Do not use where the total lamp wattage is less than the minimum load shown in the chart.
Limited Warranty
(Valid only in U.S.A., Canada, Puerto Rico, and the Caribbean.)
Lutron will, at its option, repair or replace any unit that is defective in materials or manufacture within one year after purchase. For warranty service, return unit to place of purchase or mail to Lutron at 7200 Suter Rd.,
Coopersburg, PA 18036-1299, postage pre-paid.
THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES, AND THE IMPLIED WARRANTY OF
MERCHANTABILITY IS LIMITED TO ONE YEAR FROM PURCHASE. THIS WARRANTY DOES NOT COVER THE
COST OF INSTALLATION, REMOVAL OR REINSTALLATION, OR DAMAGE RESULTING FROM MISUSE, ABUSE,
OR DAMAGE FROM IMPROPER WIRING OR INSTALLATION. THIS WARRANTY DOES NOT COVER
INCIDENTAL OR CONSEQUENTIAL DAMAGES. LUTRON’S LIABILITY ON ANY CLAIM FOR DAMAGES
ARISING OUT OF OR IN CONNECTION WITH THE MANUFACTURE, SALE, INSTALLATION, DELIVERY, OR USE
OF THE UNIT SHALL NEVER EXCEED THE PURCHASE PRICE OF THE UNIT.
This warranty gives you specific legal rights, and you may have other rights, which vary from state to state.
Some states do not allow the exclusion or limitation of incidental or consequential damages, or limitation on how long an implied warranty may last, so the above limitations may not apply to you.
This product is covered under one or more of the following U.S. patents: 5,017,837; 5,248,919; 6,169,377;
7,190,125, and corresponding foreign patents. U.S. and foreign patents pending. Lutron is a registered trademark and FASS and Vierti are trademarks of Lutron Electronics Co., Inc. Sylvania is a trademark of
Osram Sylvania, Inc. Philips is a registered trademark of PHILIPS EXPORT B.V.
CORPORATION. NEC is a registered trademark of the National Fire Protection Association, Quincy,
Massachusetts.
© 2008 Lutron Electronics Co., Inc.
Worldwide Technical and Sales Assistance
For questions concerning the installation or operation of these products, call the
Lutron Technical Support Center. Please provide the exact model number when calling.
1-800-523-9466 (U.S.A., Canada, and the Caribbean)
Other Countries call +1-610-282-3800
Fax +1-610-282-3090
Visit our web site at www.lutron.com
Dimmer Functions
Touch here for full light output
Touch here for
50% light output
Touch here to toggle ON/OFF
Background LEDs:
Glow dimly
Light Level LEDs:
Shows current light level
Status LED:
ON = blue, white, or green
OFF = orange
Touch and hold when the unit is on: Each time the dimmer is turned off, delayed fade to OFF can be activated. As this region is held, an LED will begin to flash, and the lights will begin to fade off with a 30 second delay.
Advanced Programming Mode
The following Vierti Dimmer settings can be modified using the Advanced Programming
Mode:
High/Low End Trims
LED Brightness
Sound OFF/ON
Delayed Fade Wait Time
OFF Fade Time
On Fade Time
Locked Preset
Consult Application Note #205 on how to use the Advanced Programming Mode. Please visit www.lutron.com/vierti or call Lutron Technical Support.
Troubleshooting
Symptom
Light does not turn ON and no LEDs turn ON.
Light turns ON and Dimmer works, but
Companion Dimmer does not work.
System repeatedly turns ON and OFF.
LEDs scroll up and down.
Dimmer does not have a blue screw.
Possible Cause
• The FASS switch on the Dimmer or
Companion Dimmer(s) is pulled down to the OFF position.
• Light bulb(s) burned out.
• Breaker is OFF or tripped.
• Dimmer is miswired. Check wiring.
• Wire connected to the blue screw terminal on the Dimmer is not the same wire connected to the blue screw terminal on the Companion Dimmer. Check wiring.
• Load is less than the minimum load. See the Minimum Load Chart to determine the acceptable minimum load.
• Dimmer has encountered an error condition. Call Lutron Technical Support.
• Dimmer is a single-pole unit.
Replace VT-600 with VT-600M.
