Wired Remote Temperature Sensing

PROGRAMMING

One remote temperature sensor can be installed indoor or outdoor and connected to the thermostat by a maximum cable length of 100 meters (300 feet). Terminals +, S and - on the terminal block allow connection of the remote sensor. The thermostat must have 24 VAC Common connection to terminal C for the remote sensor to operate. The remote sensor can be enabled or disabled in the Installer/Configura- tion menu, item 25.

When remote sensor, Remote, is selected Off (factory default), no remote sensor is enabled. When remote sensor is selected On, the next step is to select the remote as indoor, Remote In, or outdoor, Remote Outdoor. If the remote is selected as Remote In, an additional step will be to select if the temperature shown on the display will be from the thermostat, LS On, or the remote sensor Ls Off.

In normal operation, when a remote sensor is enabled the time digits of the display will alternate between the time and the remote temperature for three seconds each. Above the remote temperature will be Remote, for indoor sensor or Outdoor Remote, for outdoor sensor. If the remote sensor is an indoor sensor and the local display has been disabled, the temperature displayed as the room temperature will be the remote sensor temperature.

Sensing Range:

Outdoor temperature range is -40 to 140oF

Indoor temperature range is 32 oF to 99 oF

Weight of Remote Reading:

The thermostat is designed to receive the temperature of the indoor remote sensor and average, or weight, it with the local sensor in the thermostat for each program period. The averaging will be active only when the local sensor and the indoor remote sensor are both functional and enabled in the Installer/Configuration menu.

When the thermostat is in the Set Schedule mode, the weight of the indoor sensor will be shown in the current temperature digits of the display. The weight will show as A2 (average and default), H4 (high) or L1 (low). Pressing theand keys at the same time will change the weight for the program period. The weight of the local sensor is fixed.

In normal operation of the thermostat, the current tempera- ture displayed will be the weighted average of the local sensor and the remote sensor using the formula (local sensor weight x local sensor temperature) + (remote sensor weight x remote sensor temperature) / (local sensor weight + remote sensor weight).

Example: Local sensor temperature is 80° and the remote sensor is 70°.

If weight is selected H4, the averaged temperature of 72° will be displayed.

(1 x 80) + (4 x 70) / 5 = 72°

If weight is selected A2, the average temperature of 73° will be displayed.

(1 x 80) + (2 x 70) / 3 = 73.3°

If weight is selected L1, the average temperature of 75° will be displayed.

(1 x 80) + (1 x 70) / 2 = 75°

The example shows that the weight selected would prioritize the overall averaged temperature between the two sensors. The high weight selection caused the remote sensor to have a higher influence in the calculated temperature average than the local sensor and the low weight selection caused the remote sensor to have less influence.

Dual Fuel Temperature Setpoint

When the thermostat is configured for Heat Pump mode and an outside remote sensor is installed, the thermostat can monitor the outside temperature. When the outside tempera- ture falls below a user selectable temperature, the thermostat will switch to gas heat and shut down the compressor. This eliminates the need for a fossil fuel kit.

The user selectable temperature is called the dual fuel temperature setpoint, dF and is set in the Installer/Configura- tion menu, item 26. The dual fuel temperature setpoint can be set to a temperature of 5 through 50. A selection of 5 (default setting) disables this feature and menu selection of Cd will not be available.

After the dual fuel temperature setpoint is set above 5 and

is pressed, a delay, Cd, can be set for compressor shutdown after the auxiliary stage is energized. This delay can be set from 0 seconds to 99 seconds to minimize the time that the system may blow cooler air until the alternate source of heat comes on. Default setting for delay is 60. When setting the delay if theorkeys are held depressed, the setpoint will increase or decrease at the rate of one degree every half second for the first three seconds and double the speed after three seconds.

37-6753B specifications

The White Rodgers 37-6753B is a high-performance thermostat designed to cater to the needs of both residential and light commercial applications. Recognized for its user-friendly interface and advanced features, this thermostat offers an ideal blend of functionality and sophistication.

One of the standout features of the 37-6753B is its ability to manage both heating and cooling systems effectively. It supports a wide range of HVAC configurations, including single-stage and multi-stage heat pumps, gas furnaces, and air conditioning systems. This versatility makes it an excellent choice for various settings, ensuring optimal comfort year-round.

The thermostat boasts a large, easy-to-read display that enhances usability. Users can quickly view and adjust temperature settings, making it simple to achieve their desired indoor climate. The intuitive button layout also facilitates seamless navigation through programming options and system settings.

A key technological advantage of the White Rodgers 37-6753B is its programmable capabilities. Users can create customized schedules to optimize energy use throughout the day. With the ability to set different temperature profiles for weekdays and weekends, the thermostat can significantly reduce energy consumption without sacrificing comfort.

Another notable feature is the inclusion of advanced temperature averaging technology. This feature ensures that the heating and cooling systems operate efficiently by measuring the temperature in multiple locations within a home. As a result, it can prevent hot or cold spots, leading to a more uniform indoor climate.

The 37-6753B is also equipped with a filter change indicator. This feature alerts users when it’s time to replace or clean the air filter in their HVAC system, promoting better air quality and system performance. Regular maintenance helps extend the lifespan of the heating and cooling units.

For added convenience, the thermostat can be powered either by batteries or through a C-wire connection, allowing for flexibility depending on your existing system's setup. The compact design also makes it easy to install, even for those with minimal technical expertise.

In summary, the White Rodgers 37-6753B thermostat is a technologically advanced solution for managing indoor climates efficiently. Its programmable features, temperature averaging technology, and user-friendly design make it a standout choice for homeowners and light commercial users alike, ensuring reliable temperature control and energy savings.