The ESRTP4RFW is an RF Programmable Room Thermostat designed for automatic time and temperature control of heating systems in domestic or light commercial premises. It combines the functions of a thermostat and a timer (programmer) into a single unit, offering a user-friendly interface with a large backlit LCD screen and easy-to-use function buttons. The device is manufactured by ESi Controls, an Energy Saving Innovative Controls Limited company.

Function Description:

The primary function of the ESRTP4RFW is to provide precise control over heating schedules and temperatures. Users can choose between 24-Hour, 7-Day, or 5-2-Day programming modes, and select either 4 or 6 daily temperature changes (events). This flexibility allows for tailored heating profiles to suit various lifestyles and energy-saving preferences. The thermostat supports both ON programs (desired comfort temperature) and OFF programs (SETBACK temperature), which prevent the room temperature from falling too low when heating is off, thereby reducing energy consumption when the heating is reactivated. The recommended SETBACK temperature is 15°C, but this can be adjusted.

The ESRTP4RFW incorporates advanced energy-saving features, including Chronoproportional Control (TPI), Delayed Start, and Optimum Start/Stop, which are factory-set to OFF, allowing the end-user to enable them as preferred. These features are designed to optimize boiler operation, reduce fuel costs, and minimize carbon emissions.

Important Technical Specifications:

While specific technical specifications like power supply, temperature range, or RF frequency are not explicitly detailed in the provided manual excerpts, the device operates wirelessly (RF) and is powered by 2 x AA batteries. It is designed to pair with an RF receiver (supplied as a kit) and can optionally be upgraded for smart control by pairing with an ESWIFIHUB, which then allows control via the ESi Centro app.

Usage Features:

Modes: The thermostat offers three main modes:
- AUTO Mode: Runs programmed schedules. Users can temporarily adjust the SET temperature, and the display will show a countdown until the next program starts. Overrides are cancelled when the countdown reaches 0h:00.
- MANUAL Mode: Allows users to manually set a comfortable temperature, which the heating system will maintain until changed or switched to a different mode. Programs do not run in Manual Mode.
- OFF (Frost Protection) Mode: Turns off heating but activates frost protection if the room temperature drops to 5°C, bringing the heating on until it reaches 7°C to prevent freezing. A snowflake icon indicates this mode.
Programming:
- Program Schedules: Pre-programmed heating times and temperatures are set at the factory. Users can accept these or customize them.
- Schedule Options: Choose between 5-2Day (weekdays/weekends), 24Hour (same programs daily), or 7Day (different programs daily).
- Daily Programs: Defaulted to 4 daily programs (2 ON, 2 SETBACK), with an option to add a further 2 daily programs for a total of 6 events.
- COPY Function: In 7Day mode, users can copy an entire day's programs to another day, saving time during setup.
Time & Date Setting: Simple adjustment of hour, minute, date, month, and year, with an option for 12-Hour or 24-Hour clock display.
All Day Function: Allows setting an adjustable room temperature until midnight, bypassing programmed schedules. This mode is cancelled at midnight.
Holiday Mode: Users can set a duration (up to 99 days) and a base temperature for when they are away. A suitcase icon appears, and a countdown of remaining holiday days is displayed. The mode is cancelled when the countdown reaches 0d.
Buttons & Screen Icons:
- HOME Button: Returns to the home screen, exiting menus or other functions.
- NEXT Button (►): Advances to the next option in menus, programming, or settings.
- +/- Buttons: Adjust temperatures and other settings.
- ALL DAY Button: Activates the All Day function.
- COPY Button: Used for copying programs in 7Day mode.
- HOLIDAY Button: Activates Holiday Mode.
- TIME/DATE Button: Initiates time and date setting.
- PROG Button: Used for setting programs.
- MODE Button: Switches between Auto, Manual, and Off modes.
- RESET: A pin-like object can be inserted into a reset hole to reset the thermostat.
- Flame Icon: Indicates when heating is on.
- Wi-Fi Icon: Flashes when not connected to an ESWIFIHUB, solid when connected.
- RF Icon: Solid antenna indicates pairing with the RF receiver. A circle with a line through it means a signal was sent but no reply received.
- Low Battery Icon: Appears when AA batteries are low, and the backlight stops working to conserve power.

Maintenance Features:

Battery Replacement: The device uses 2 x AA batteries. The low battery icon prompts replacement with high-quality alkaline cells. Time, date, and program settings are retained as long as the back-up battery has not expired.
RF Pairing: If the RF receiver and thermostat were supplied as a kit, they are pre-paired. Instructions are provided for re-pairing if necessary, involving specific button presses on both the receiver and thermostat.
Reset Function: A reset hole allows for a full reset of the thermostat using a pin-like object.
Warranty Registration: Users are encouraged to register their product online at www.esicontrols.co.uk/warranty for an extended warranty.
Software Updates: ESi Controls continuously develops its products, implying potential for future updates or improvements, though specific update mechanisms are not detailed.

The ESRTP4RFW is designed to be an energy-efficient and user-friendly solution for managing home heating, offering both basic and advanced control options to suit various user needs.

ESI ESRTP4RFW - Page 16

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