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LENNOX Thermostat: Heat and Cool, Manual, B/C/G/O/Rc/Rh/W1/Y1, Auto-On, Cool-Heat-Off - Digital Thermostats
LENNOXDigital Thermostats

LENNOX Thermostat: Heat and Cool, Manual, B/C/G/O/Rc/Rh/W1/Y1, Auto-On, Cool-Heat-Off

The LENNOX 24Z12 is a rectangular digital thermostat for heat and cool applications, operating on 24V AC with a manual changeover type and system settings of Cool-Heat-Off. It features a slide switch control, Auto-On…

SKU 3G-OTH-70354

Brand
LENNOX
Item
Thermostat: Heat and Cool, Manual, B/C/G/O/Rc/Rh/W1/Y1, Auto-On, Cool-Heat-Off
Category
Digital Thermostats
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Technical Specifications

LENNOX
Manufacturer Part Number
24Z12
Type
Manual, B/C/G/O/Rc/Rh/W1/Y1, Auto-On, Cool-Heat-Off, Horizontal
Shape
Rectangle
Voltage
24V AC
Digit Size
Standard
Application
Heat and Cool
Control Type
Slide Switch
Fan Settings
Auto-On
Key Features
Optional Celsius Display
Changeover Type
Manual
System Settings
Cool-Heat-Off
Mounting Direction
Horizontal
Terminal Designations
G
Temperature Differential
± 1 °F
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LENNOX Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The LENNOX 24Z12 is a rectangular digital thermostat for heat and cool applications, operating on 24V AC with a manual changeover type and system settings of Cool-Heat-Off. It features a slide switch control, Auto-On fan setting, optional Celsius display, and a temperature differential of ± 1 °F. The thermostat mounts horizontally and includes terminal designation G.

Frequently Asked Questions

What is the LENNOX 24Z12 thermostat used for?

The LENNOX 24Z12 is a manual-changeover digital thermostat designed for heat and cool applications in residential or light commercial HVAC systems. It controls 24V AC heating and cooling equipment, offering Cool-Heat-Off system settings and an Auto-On fan setting for basic temperature regulation.

What are the specifications of the LENNOX 24Z12 thermostat?

The LENNOX 24Z12 operates on 24V AC with a temperature differential of ± 1 °F. It features manual changeover, Cool-Heat-Off system settings, Auto-On fan setting, optional Celsius display, and terminal designation G. The rectangular thermostat mounts horizontally and uses a slide switch control.

Where to buy the LENNOX 24Z12 thermostat worldwide?

3G Electric supplies the LENNOX 24Z12 thermostat to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and to place an order for this manual-changeover digital thermostat.

How to install the LENNOX 24Z12 thermostat?

To install the LENNOX 24Z12, first turn off power to the HVAC system. Mount the thermostat horizontally on a wall, connect the 24V AC wires to the G terminal and other required terminals per your system's wiring diagram. Secure the base, attach the faceplate, restore power, and set the slide switch to desired mode.

Used in

Common applications for LENNOX
Commercial HVAC maintenance — Lennox blower wheel 31G67 for replacing worn fans in rooftop units
Gas furnace repair — Lennox induced draft blower 56W68 for exhaust system replacement in residential furnaces
Thermostat upgrade — Lennox 24Z12 for manual control in heat and cool applications in office buildings
Safety system replacement — Lennox limit switch 26G78 for over-temperature protection in industrial heaters
Heat exchanger retrofit — Lennox heat exchanger assembly 96L74 for furnace repair in manufacturing facilities

LENNOX Products

3G Electric supplies LENNOX digital thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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