Installation Instructions for

Cooling only

1C21

YOUR THERMOSTAT REPLACES

Description

1C21

 

 

Standard Heating & Cooling Systems - 4 or 5 wires

No

Standard Cool Only Systems

Yes

 

 

Millivolt Cool Only Systems - Floor or Wall Furnaces

Yes

Standard Central Air Conditioning

Yes

 

 

Gas or Oil Heat

No

Electric Furnace

No

Hydronic (Hot Water) Zone Heat - 2 Wires

No

 

 

Hydronic (Hot Water) Zone Heat - 3 Wires

No

 

 

Heat Pump (No Aux or Emergency Heat)

No

Heat Pump (with Aux or Emergency Heat)

No

Baseboard Electric Heating or Line Voltage (120 or 240 Volt)

No

 

 

 

 

CONTENTS

 

Preparations

1

Thermostat Features

2

Removing Old Thermostat

3

Mounting and Wiring

4

New Thermostat Operation

5

Specifications

6

Troubleshooting

7

1 PREPARATIONS

Assemble tools required as shown below.

FLAT BLADE SCREWDRIVER

WIRE CUTTER/STRIPPER

HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED

SPIRIT LEVEL OR PLUMB BOB AND LINE OPTIONAL—

THERMOSTAT MUST BE LEVEL TO WORK PROPERLY

Failure to follow and read all instructions carefully be- fore installing or operating this control could cause personal injury and/or property damage

2 THERMOSTAT FEATURES

MOUNTING SCREWS

CAPTIVE SCREWS

BASE

COVER

 

Adaptor Plate

Figure 1.

(optional)

3 REMOVING OLD THERMOSTAT

!CAUTION

To prevent electrical shock and/or equipment damage, disconnect electrical power to the system at the main fuse or circuit breaker until installation is complete.

Before removing wires from old thermostat’s switching subbase, label each wire with the terminal designation it was removed from.

Some models also include an adaptor plate to cover unpainted surfaces. Thermostat wires pass through the adaptor plate center opening.

1.Remove Old Thermostat: A standard heat/cool thermostat consists of two basic parts:

a.The cover, which may be either a snap-on or hinge type.

b.The base, which is removed by loosening all captive screws.

ATTENTION! This product does not contain mercury. How- ever, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing non-absorbent gloves, take up the spilled mercury and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container. Refer to www.white-rodger.com for location to send the product containing mercury.

 

PART NO. 37-6370B

www.white-rodgers.com

Replaces 37-6370A

0835

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White Rodgers 1C21 installation instructions Your Thermostat Replaces, Contents, Preparations, Thermostat Features

1C21 specifications

The White Rodgers 1C21 is a well-regarded thermostat designed for residential heating and cooling systems. It is known for its reliable performance and user-friendly interface. The 1C21 model offers a blend of essential features and cutting-edge technologies, making it a popular choice among homeowners looking for an efficient climate control solution.

One of the key features of the White Rodgers 1C21 is its easy-to-read digital display, which allows users to monitor and adjust the temperature effortlessly. The display provides clear readouts, making it simple to ensure that the indoor environment is comfortable. Moreover, this thermostat is compatible with a variety of heating and cooling systems. It works seamlessly with gas, oil, and electric heating units, as well as central air conditioning systems, ensuring versatility for diverse home setups.

The 1C21 also incorporates a simple programming capability, allowing users to set different temperatures for different times of the day. This feature is particularly valuable for energy savings, as it enables homeowners to lower the heating or cooling when they're away or asleep, thereby reducing utility bills without sacrificing comfort.

Another notable aspect of the White Rodgers 1C21 is its user convenience. The thermostat features a straightforward installation process, typically compatible with standard wiring configurations found in most homes. Additionally, it includes intuitive buttons for easy temperature adjustments and programming, ensuring that users can operate it without the need for extensive technical knowledge.

In terms of reliability, the White Rodgers brand is known for its durable and long-lasting products. The 1C21 is designed with robust materials that can withstand the wear and tear of daily use. Furthermore, it has built-in accuracy features, maintaining consistent temperature control for optimal home comfort.

Energy efficiency is a priority for the White Rodgers 1C21, which may contribute to lower utility costs over time. By utilizing programmable settings, users can optimize their energy consumption, aligning heating and cooling needs with their daily lifestyle.

In summary, the White Rodgers 1C21 is an efficient thermostat that combines essential features, user-friendly operation, and compatibility with various heating and cooling systems. Its reliable performance and focus on energy efficiency make it a valuable addition to any home, ensuring both comfort and cost-effectiveness. Whether upgrading an old thermostat or installing a new one, the White Rodgers 1C21 is an excellent choice for maintaining a pleasant indoor climate.