Two-Note Door Chime

INSTALLATION INSTRUCTIONS

READ & SAVE THESE INSTRUCTIONS!

MODEL: LB-18, LB-76 SERIES

•Designed for two-door operation.

•Model LB-76 is designed to be used with a NuTone Radio-Intercom system.

WIRING CAUTIONS: Before installing the transformer and chime, turn off the house power and leave it off until installation is complete.

Carefully fasten wiring to wall studs and ceiling joists

–avoid short circuits caused by staples or clips cutting through the wiring's insulation. When drilling into walls, be careful not to damage existing electrical cables.

All wiring must comply with local codes or the National Electrical Code. If you are unfamiliar with electrical wiring installation methods, secure the services of a qualified electrician.

NOTE: NuTone Model 101T (16V - 15VA) transformer is included with Model LB-76 Door Chime.

		CHIME WIRING DIAGRAM
		CAUTION: DO NOT USE THIS TRANSFORMER
		FOR INTERCOM OR OTHER APPLIANCE
		FRONT DOOR
	FRONT	PUSHBUTTON
		120v AC
		WIRING
	TRANS	20-GAUGE INSULATED
	TRANS	2-CONDUCTOR WIRE
		2-CONDUCTOR WIRE
		COMMON
	REAR	WIRES
	REAR	NUTONE 101T
		NUTONE 101T
		TRANSFORMER
		REAR DOOR
		PUSHBUTTON
		FIGURE 1

INSTALLATION

1.NuTone chimes are designed to be seen as well as heard. Locate the chime on a wall at eye level.

2.Mount the transformer to a convenient junction box or panel box. Connect the 120v AC house power leads to the transformer wires as follows: black to black; black to white.

NOTE: Label all wires as they are run.

3.Run 20-gauge, 2-conductor wire from the transformer terminals to the chime site.

4.Wire and mount the pushbuttons. Run 20-gauge,

2-conductor wire from the pushbutton to the chime site.

5.If connecting Model LB-76 chime to a NuTone Radio- Intercom, run NuTone IW-2 cable (22-gauge, 2-conductor) from the Radio-Intercom to the chime site. For connections to the Radio-Intercom, see instructions packaged with the Radio-Intercom Master Unit.

6.Pull all of the wires which have been run to the chime site through chime baseplate. Mount baseplate with supplied screws.

7.Connect wires as shown in Figure 1. Where applicable, make connections to Radio-Intercom as shown

in Figure 2.

8.Be certain the wires are not touching the chime tone bars or the power unit.

9.Restore the house power to transformer and test chime. If chime does not respond to pushbutton, check wire connection.

10.Install the chime over the baseplate.

NUTONE IW-2 CABLE

FROM RADIO-INTERCOM TO MODEL LB-76

INTERCOM CHIME VOLUME CONTROL

TERMINAL BOARD

FIGURE 2

HOMEOWNER'S INFORMATION

“Sluggish” chime plungers

If chime plungers should ever get “sluggish” in their movement, clean the plungers with a non-flammable cleaning fluid and wipe dry.

CAUTION: Never oil chime plungers.

LB-18, LB-76 specifications

NuTone is a well-respected name in the world of home ventilation and exhaust solutions, and their models LB-18 and LB-76 continue this legacy. These ventilators are designed to improve air quality in homes while ensuring a quiet operation.

The NuTone LB-18 is a compact, highly efficient bathroom exhaust fan known for its powerful yet quiet performance. One of its standout features is its 70 CFM air movement capability, which makes it suitable for small to medium-sized bathrooms. The motor is engineered for good performance and longevity, allowing it to run quietly even at maximum capacity. The LB-18 is equipped with a built-in backdraft damper that prevents unwanted outdoor air from entering the home when the fan isn't in use, providing energy efficiency.

On the other hand, the NuTone LB-76 takes ventilation a step further with its larger design and enhanced features. This model boasts a higher airflow of 100 CFM, making it ideal for larger bathrooms or commercial settings. Like the LB-18, it has a powerful but quiet operation, making it suitable for spaces requiring ventilation without disruptive noise. The LB-76 also comes with a protective damper that helps to minimize outside air infiltration.

Both models incorporate a unique design that allows for easy installation, whether it's in a ceiling or wall. They are versatile and adaptable, containing a robust mounting system to fit different installation needs. Easy-to-clean grilles ensure that maintaining cleanliness doesn't become a hassle.

In terms of technology, NuTone has designed these ventilators with energy efficiency in mind. They meet or exceed the guidelines set by Energy Star, making them a responsible choice for any eco-conscious homeowner. The durable components ensure a long service life, while also providing a robust warranty that speaks to the confidence NuTone has in their product.

Overall, the NuTone LB-18 and LB-76 are exceptional options for anyone looking to improve indoor air quality while maintaining a quiet environment. With their combination of efficiency, easy installation, and stylish designs, both models represent the quality and innovation synonymous with the NuTone brand.