Instructions / Assembly
THANK YOU
We appreciate the trust and condence you have placed in Hampton Bay through the
purchase of this transformer. We strive to continually create quality products designed to
enhance your home. Visit us online to see our full line of products available for your home
improvement needs. Thank you for choosing Hampton Bay!
USE AND CARE GUIDE
TRANSFORMER
Model HB-122-02 Model HB-125-02
(1003008634) (1003008628)
Illustrations may vary from actual unit.
Safety Information
□ Please read and understand this entire manual before attempting to install this
transformer.
□ All electrical work must be in accordance with national and local electrical codes. If
in doubt, consult a qualied electrician.
WARNING: Turn off power at fuse or circuit breaker before installing transformer.
Pre-Installation
TOOLS REQUIRED
Wire connector (x3) Phillips screwdriver Small athead screwdriver
Adjustable pliers Hammer Wire strippers/cutters
Circuit tester Work gloves
Safety goggles
Installation
1
Mounting the transformer
WARNING: Turn off power at fuse
or circuit breaker before installing
transformer.
Locate or install a junction box
(not included) close to the selected
mounting location for your doorbell.
For new installations, remove the
cover plate and knockout from the
junction box.
NOTE: If replacing an existing
transformer, use tape to keep any wires
attached to the same screw together.
Mounting model 122
(1003008634)
Remove the locknut from the
threaded shaft on the transformer.
From the exterior of the junction
box, pass the transformer wires
through the knockout hole in the
junction box.
Fasten the locknut to the
transformer’s threaded shaft on the
inside of the junction box to secure
the transformer to the junction box.
Mounting model 125
(1003008628)
From the exterior of the junction
box, pass the transformer wires
through the knockout hole in the
junction box.
Insert the transformer clamp
through the same knockout hole
as the wires. Tighten the screw
(provided) against the edge of the
knockout hole on the junction box.
IMPORTANT: Do not install transformer in an
attic location.
Model 122 (1003008634)
Model 125 (1003008628)
NOTE: Mounting clamp requires
a junction box with at sides and
knockouts.
2
Wiring the transformer
If needed, strip 1/2 in. of insulation
from power supply wires.
Connect the transformer wires
to the power supply wires in the
junction box using UL approved
wire connectors (not included).
□ Connect all white wires
together.
□ Connect all black wires
together.
□ Connect all ground (green or
bare copper) wires together.
Check all connections and replace
the cover plate.
IMPORTANT: For metal junction boxes, it is
required to connect the green ground wire from the
transformer to the metal junction box or clamp it to
the metal conduit.
3
Connecting the low voltage
bell wire to the transformer
Wiring model 122 (1003008634)
Connect one of the bell wires to
one of the low voltage screws.
Connect the other bell wire (or, if
two or more were together) to the
other low voltage screw.
Wiring model 125 (1003008628)
Determine what voltage is required for the installed doorbell (8, 16, or 24 volts).
See wiring diagram and arrow markings on the transformer for correct screw
locations.
Connect one of the bell wires to one of the low voltage screws of the desired
voltage level.
Connect the other bell wire (or, if two or more were together) to the other
matching low voltage screw.
8V 10VA 16V 10VA
24V 20VA
LOAD
8V 10VA 16V 10VA 24V 20VA
8V 10VA 16V 10VA
24V 20VA
LOAD
8V 10VA 16V 10VA
24V 20VA
LOAD
Warranty
3-YEAR LIMITED WARRANTY
WHAT IS COVERED
This product is guaranteed to be free of factory defective parts and workmanship for a
period of 3 years from date of purchase. Purchase receipt is required for all warranty
claims.
WHAT IS NOT COVERED
This warranty does not include expendable items (such as light bulbs, batteries, etc.), repair
service, adjustment and calibration due to misuse, abuse or negligence. Unauthorized
service or modication of the product or of any furnished component will void this warranty
in its entirety. This warranty does not include reimbursement for inconvenience, installation,
setup time, loss of use, unauthorized service, or return shipping charges. This warranty
is not extended to other equipment and components that a customer uses in conjunction
with this product.
Contact the Customer Service Team at 1-844-760-3644 or visit www.hamptonbay.com.
Questions, problems, missing parts?
Before returning to the store, call Hampton Bay Customer Service
8 a.m. - 5 p.m., CST, Monday - Friday
1-844-760-3644
HAMPTONBAY.COM
Specications
Power requirements
120 VAC, 60 Hz
Troubleshooting
Problem Solution
The doorbell does not sound. Test transformer voltage output with a
volt meter. Set the volt meter to read A/C
voltage. Voltage should read between
18 - 22 volts A/C on the low voltage side of
the transformer when the doorbell is NOT
playing. If the volt meter reads below 18
volts, replace the transformer.
Remove the push button that is not working
from the door frame. Disconnect the wires
from the terminals and touch the bare wires
together. If the doorbell sounds, the push
button is defective. Replace the push button.
Disconnect the wire from the terminal
marked “TRANS”. While someone presses
the push button at the front door, quickly
touch the “TRANS” wire to the terminal
marked “FRONT”. You will see a small
spark if the push button, wiring, and
transformer are operating properly. Repeat
the steps for the “REAR” terminal and the
rear push button. If the wiring between the
transformer and the push button(s) checks
out properly, replace the doorbell.
209477-01A
Item #1003008634
1003008628
Model #HB-122-03
HB-125-03