DiodeDrive LVT Series User manual

Low Voltage Landscape Transformers
User Manual
Important: Read all instructions prior to installation. LVT Series
LV T- B 015 0 - O W- 211
4400 Earth City Expy, St. Louis, MO 63045 866-590-3533 diodedrive.com
Rev Date: V2 06/15/2020
Safety and Notes
Transformer Mounting
Specications
Mount transformer to solid surface using stainless hardware capable of supporting the weight of the transformer.
Hardware is not included. Once screw(s) are properly mounted, slide transformer over screw heads and tighten
screw(s) to lock in place once the transformer is level.
• Product should be installed and serviced in accordance with applicable national, state,
and local building and electrical codes.
• Risk of re or electrical shock. Install transformer at least 10 ft (3.05 m) from pools, spas,
or fountains.
• Outdoor, above ground installation only. For use with low voltage landscape lighting only.
• Transformer has a built-in circuit breaker which can be reset by removing and then
restoring power.
• Transformer must be connected to GFCI-protected receptacle marked suitable for wet
locations. Receptacle must be protected by a weatherproof cover.
• Do not submerge the transformer or use it to power submersible lights or lights mounted
in or near pools, spas, or fountains.
• If cleaning is necessary, use a damp cloth to wipe down case. Do not spray transformer
with pressurized water or steam.
• Do not use with dimmer or extension cord or wire in parallel with other transformers.
• Do not exceed 70% of the maximum wattage of the transformer when connecting lights.
• Transformer must be mounted in a vertical orientation, with the bottom at least 1 ft from
the ground.
• Ensure all mounts are securely attached and will support the transformer’s weight. Failure
to properly support transformer may result in damage or injury, for which the manufacturer
does not assume responsibility.
• Do not attempt to disassemble or modify transformer.
• Ensure wiring to lights is correct gauge for the run and total power of the intended circuit
and is intended for use with outdoor landscape applications.
Transformer Sizing
Total load (watts or volt-amperes) of all xtures connected to one transformer must not exceed 70% of the
W or VA capacity of the transformer. Use the below equation to calculate the most suitable transformer.
total xture load (W or VA) ÷ 0.7 = minimum transformer capacity
Model LVT- 075W-A- HS-111 150W-B- OS-211 300W- B- OS-311 600W-B-OS-412
Output Voltage 12 or 15 VAC 12, 13, 14, or 15 VAC 12, 13, 14, or 15 VAC 12, 13, 14, or 15 VAC
Operating Temperature -4°–113° F (-20°–45° C)
IP Rating IP54
Weight 6.9 lb (3.1 kg) 12.8 lb (5.8 kg) 16.75 lb (7.6 kg) 25.5 lb (11.6 kg)
Check product label for specific electrical
specifications related to installation.
Improper installation will void warranty.
System Check
After installing entire system, apply supply power. After ve minutes of operation, remove supply power. Check all
low voltage electrical connections, which should be cool to the touch. If any connection is warm to the touch, check
and re-tighten the connection and repeat the process until all connection problems are resolved.

1. Begin by unplugging transformer to remove supply power.
2. Use a screwdriver and carefully remove the inside section
of the knockout located on the right side
of the transformer. Do not remove outer
portion of knockout, as this will prevent
the photocell from mounting properly.
3. Install photocell into case and tighten in place.
4. Remove the jumper wire from the photocell connector and
connect the photocell.
5. Adjust the angle of the sensor so it can accurately detect
ambient lighting and apply power. Check for proper operation
and adjust sensor angle as needed.
With all grey tabs set at the inner position, the timer will
not aect function and the connected lights will stay on
unless power is switched o.
1. To set up the timer, begin by rotating the timer dial until
the arrow on the right points to the current time (this
system uses a 24-hour clock).
2. Next, slide dark grey tabs outward at times when system
should be powered o.
Note: The system can be manually turned o using the
main power switch as well.
User Manual
LVT Series
Low Voltage Landscape Transformers
Important: Read all instructions prior to installation.
4400 Earth City Expy, St. Louis, MO 63045 866-590-3533 diodedrive.com
Rev Date: V2 06/15/2020
Wire and Voltage Selection
12 AWG landscape wire is generally recommended. For optimal results, lights should be distributed evenly along the cable run,
with higher power lights being closest to the transformer. Higher voltage terminals can be used with longer runs to make up for
slight voltage drops. The below equation and table can be used to select the appropriate wire gauge for an application.
Note: When connecting wiring to transformer, do not loosen top terminals on 75 W models as they are for internal wiring only.
Voltage Loss Calculation
( x x 2) / =
distance (ft) load (W) cable constant voltage loss
Wire Gauge Cable Constant
#18/2 1,380
#16/2 2,200
#14/2 3,500
#12/2 7, 5 0 0
#10/2 11,920
Optional Photocell Installation Built-in Timer Operation (75 W only)

User Manual
LVT Series
Low Voltage Landscape Transformers
Important: Read all instructions prior to installation.
4400 Earth City Expy, St. Louis, MO 63045 866-590-3533 diodedrive.com
Rev Date: V2 06/15/2020
Optional Timer Operation (150–600 W models)
Mechanical Timer (BND-60/U92)
With all grey tabs set at the pushed-in position, timer will not aect function
and connected lights will stay on unless power is switched o.
To set up the timer, begin by making sure the sliding switch on top is set to the
timer setting. Next, rotate the timer dial until the arrow points to the current time
(1 PM in our example). Finally, pull grey tabs outward at times when the light
system should be powered o (7 PM to 12 AM in our example). Times where
the grey tabs are pushed in (dark grey in the image) will be the only times the
system will be switched on.
Additionally, the system can be manually turned o using the main power switch,
or manually turned to always on with the slide switch on top of the timer.
Digital Timer (BND-60/SU92)
Before beginning to adjust settings, plug the timer in and press the reset button to ensure
the timer is at factory default settings before use. Timer will return to main menu if no input
is made for one minute at any time during programming or if the MENU button is held down
for 2 or more seconds.
Setting Date/Time
1. With supply power on, press the MENU button once. CLOCK should be illuminated
in the top right corner of the screen.
2. Next, press the OK button to enter day of the week selection. Use the +/- buttons
to select the correct date. Press OK to conrm selection.
3. The hour should now be ashing. Use the +/- buttons to adjust to the correct hour
(cycle through to go from AM to PM). Press OK to conrm, then repeat for minutes.
Setting Programs
Timer can store information for up to 9 programs, with independent ON and OFF settings for each program.
1. With supply power on, press the MENU key until you reach the desired ON or OFF setting. Each pair of
ON and OFF settings (e.g. 1ON and 1OFF) will need to be set to work together for proper operation.
2. Press the OK button to enter programming for the selected setting.
3. Use the +/- buttons to cycle though day settings and press OK when the desired setting is displayed.
Day Settings:
MO, TU, WE, TH, FR, SA, and SU (full week)
MO, TU, WE, TH, FR, SA, or SU (individual days)
MO, TU, WE, TH, and FR (weekdays only)
SA and SU (weekend only)
4. Select the hour (cycle through to go from AM to PM) using the +/- buttons, then press OK.
5. Select the minute using the +/- buttons, then press OK to nish programming the setting.
6. Press the MANUAL button so that AUTO is displayed on the screen to activate the programmed settings.
Operating Modes
Press the MANUAL button to cycle between operating modes.
OFF - Lights will remain o and set programs will not be activated.
ON - Lights will remain on constantly and set programs will not be activated.
AUTO/ON - Lights are currently on and set programs will be activated.
AUTO/OFF - Lights are currently o and set programs will be activated.
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User Manual
LVT Series
Low Voltage Landscape Transformers
Important: Read all instructions prior to installation.
4400 Earth City Expy, St. Louis, MO 63045 866-590-3533 diodedrive.com
Rev Date: V2 06/15/2020
Features (75 W model)
Features (150–600 W models)
1. Operating Record, Warnings,
and Specications
2. Mechanical Timer
3. Photocell Jumper Wire
4. Photocell Knockout
5. On/O Switch and
Circuit Breaker Reset
6. Terminal Block
7. Conduit Cover
8. Mounting Tab
9. Power Cord
1. Operating Record, Warnings,
and Specications
2. Timer Plug
3. Photocell Jumper Wire
4. Photocell Knockout
5. On/O Switch and
Circuit Breaker Reset
6. Terminal Block
7. Conduit Cover
8. Mounting Tab
9. Power Cord
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