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EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations - Digital Thermostats
EMERSONDigital Thermostats

EMERSON Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations

The EMERSON Low Voltage Thermostat (MPN 1F86EZ-0251) is a digital thermostat for heat or cool applications. It operates on 20V AC with a manual changeover type and system settings of Cool-Heat-Off. Key features…

SKU 3G-OTH-70284

Also listed as: 1F86EZ0251 · 1F86EZ 0251

Brand
EMERSON
Item
Low Voltage Thermostat: Heat or Cool, Manual, C/G/O/B/R/W/Terminal Designations
Category
Digital Thermostats
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

EMERSON
Manufacturer Part Number
1F86EZ-0251
Type
Manual, C/G/O/B/R/W/Terminal Designations, Auto-On
Shape
Rectangle
Voltage
20V AC
Digit Size
Easy Read
Application
Heat or Cool
Control Type
Push Button
Fan Settings
Auto-On
Key Features
Change Filter Reminders
Changeover Type
Manual
System Settings
Cool-Heat-Off
Mounting Direction
Horizontal
Terminal Designations
C
Temperature Differential
0.6° to 1.7°F
Temperature Control Range
45° to 99°F

Technical Documents

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EMERSON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EMERSON Low Voltage Thermostat (MPN 1F86EZ-0251) is a digital thermostat for heat or cool applications. It operates on 20V AC with a manual changeover type and system settings of Cool-Heat-Off. Key features include change filter reminders, a temperature control range of 45° to 99°F, and a temperature differential of 0.6° to 1.7°F. The thermostat has a horizontal mounting direction, push button control, auto-on fan settings, and terminal designations C.

Frequently Asked Questions

What is the EMERSON 1F86EZ-0251 thermostat used for?

The EMERSON 1F86EZ-0251 low voltage thermostat is used for basic heat or cool control in residential or light commercial HVAC systems. It features manual changeover, push-button controls, and auto-on fan settings, making it suitable for simple temperature management with change filter reminders.

What are the specifications of the EMERSON 1F86EZ-0251 thermostat?

The EMERSON 1F86EZ-0251 operates on 20V AC with a temperature control range of 45° to 99°F and a differential of 0.6° to 1.7°F. It has manual changeover, system settings of Cool-Heat-Off, terminal designations C, and includes change filter reminders. The thermostat is rectangular, horizontally mounted, with push-button control and auto-on fan settings.

Where to buy the EMERSON 1F86EZ-0251 thermostat worldwide?

3G Electric supplies the EMERSON 1F86EZ-0251 thermostat worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this low voltage thermostat.

How to install the EMERSON 1F86EZ-0251 thermostat?

To install the EMERSON 1F86EZ-0251, first turn off power to the HVAC system. Mount the thermostat horizontally on a wall, connect the C terminal and other wires per your system's wiring diagram, then secure the faceplate. Restore power and set the system to Cool or Heat with manual changeover.

Used in

Common applications for EMERSON
Commercial refrigeration — Emerson single-stage electronic control (SKU 44R204) for walk-in coolers and freezers
HVAC system retrofits — Emerson low-voltage digital thermostat (SKU 3MY10) for heat or cool control in office buildings
Industrial process temperature — Emerson line-voltage mechanical thermostat (SKU 2E399) for equipment heating in manufacturing
Residential heating — Emerson analog heat-only thermostat (SKU 3MU96) for baseboard or radiant systems
Heat pump installations — Emerson standard thermostat (SKU 42PD14) for 1H/1C heat pump systems in commercial spaces
Cooling-only applications — Emerson mechanical cool-only thermostat (SKU 3MU97) for server rooms or storage areas

EMERSON Products

3G Electric supplies EMERSON 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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