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Explains the basic function and components of a programmable room thermostat for homeowners.
Provides an overview of the ESRTP4+ thermostat, its features, and benefits.
Details the TPI feature for efficient boiler operation and accurate temperature control.
Explains the Delayed Start function for reducing heating costs by up to 10%.
Describes Optimum Start, which adjusts heating start time for energy savings.
Explains Optimum Stop, which turns off the boiler earlier to save energy.
Details the Landlord Service safety feature and its maintenance reminders.
Details the default heating schedule with pre-set times and temperatures.
Guides on selecting between 5/2 Day, 7 Day, or 24 Hour operation modes.
Instructions for programming custom time and temperature events for heating.
Explains how to set a constant temperature for the entire day.
How to set a fixed temperature, overriding programmed schedules.
How to temporarily change the temperature without altering the program.
Enables energy saving by setting a reduced temperature for a period away from home.
Sets a minimum temperature to prevent frost damage during heating system shutdown.
Instructions for setting the current time, date, and clock format.
Guides on copying programmed settings to other days for efficiency.
Procedure for replacing the thermostat's batteries and maintaining settings.
How to restore the thermostat to its original factory default settings.
Explains the basic function and components of a programmable room thermostat for homeowners.
Provides an overview of the ESRTP4+ thermostat, its features, and benefits.
Details the TPI feature for efficient boiler operation and accurate temperature control.
Explains the Delayed Start function for reducing heating costs by up to 10%.
Describes Optimum Start, which adjusts heating start time for energy savings.
Explains Optimum Stop, which turns off the boiler earlier to save energy.
Details the Landlord Service safety feature and its maintenance reminders.
Details the default heating schedule with pre-set times and temperatures.
Guides on selecting between 5/2 Day, 7 Day, or 24 Hour operation modes.
Instructions for programming custom time and temperature events for heating.
Explains how to set a constant temperature for the entire day.
How to set a fixed temperature, overriding programmed schedules.
How to temporarily change the temperature without altering the program.
Enables energy saving by setting a reduced temperature for a period away from home.
Sets a minimum temperature to prevent frost damage during heating system shutdown.
Instructions for setting the current time, date, and clock format.
Guides on copying programmed settings to other days for efficiency.
Procedure for replacing the thermostat's batteries and maintaining settings.
How to restore the thermostat to its original factory default settings.
The ESRTP4+ is a programmable room thermostat designed to provide automatic time and temperature control for heating systems in domestic or light commercial premises. It combines the functions of a timer and a thermostat into a single unit, allowing users to set desired comfort temperatures for specific heating ON times and a setback temperature for OFF times. This setback temperature prevents the house from getting too cold when heating is programmed OFF, which can save energy by reducing the effort required to bring the house back to the comfort temperature. The recommended setback temperature is 16°C, but it can be adjusted between 5°C and 35°C. This feature is particularly beneficial for elderly people by preventing the house from becoming excessively cold. The unit is also capable of operating in an air conditioning/cooling mode.
The ESRTP4+ offers flexibility with 7-day, 5/2-day, or 24-hour programming options, allowing for four or six time and temperature changes each day. Different programs can be set for weekdays and weekends. It features a large backlit LCD screen and easy-to-use function buttons to simplify programming and operation.
Several energy-saving features are included, which are factory-set to OFF, allowing homeowners to choose their preferred options. These features apply only to home heating, not the hot water system.
Chronoproportional Control (TPI): This advanced energy-saving feature makes boilers operate more efficiently and provides accurate control. Unlike simple ON/OFF thermostats, TPI thermostats increase boiler efficiency by firing the boiler at regular intervals, adjusting the firing duration based on demand to maintain set room temperatures. This reduces the boiler's 'ON' time to a minimum and matches its heat output with heat loss, leading to a constant ambient environment. It can be used with any boiler, including underfloor, radiator, zoned, and electric heating systems, potentially reducing fuel costs and carbon emissions by up to 10%.
Delayed Start: This function can reduce heating costs by up to 10%. It delays the start-up of heating if the room temperature is already relatively warm when the central heating is scheduled to come on. The heating start can be delayed for up to 45 minutes, for example, during milder weather, which reduces the daily heating duration without compromising comfort. This feature is fully automated and requires no extra programming.
Optimum Start: This feature adjusts the heating start time based on the building's internal temperature. Instead of setting an arbitrary ON time, users program the time they want the house to reach the desired temperature. The system then automatically delays or advances the actual start time to ensure the target temperature is met by the programmed time, potentially saving up to 10% on domestic energy costs.
Optimum Stop: This function saves energy by switching the boiler off slightly earlier than the programmed OFF time. If the house has already reached the desired temperature, users are unlikely to notice a change in comfort but should see a difference in their energy bill.
Landlord Service: This optional safety feature helps protect tenants and landlords by ensuring compliance with Gas Safety Regulation 36. 30 days before the boiler is due for service, the LCD will display "SER." If the annual maintenance is not performed within these 30 days, the system will only run for a pre-determined number of minutes per hour before turning off, prompting the necessary service.
The thermostat comes with a factory pre-set program that suits most users, with specific heating times and temperatures. To activate this, the slider should be moved to AUTO. Users can choose between 5/2-day, 7-day, or 24-hour operation modes.
Programming involves setting specific times and corresponding temperatures for up to six events per day. A "Copy" function is available in 7-day setting to duplicate a program from one day to another or a set of days, avoiding repetitive entry.
Holiday Mode: This feature allows users to reduce the temperature for 1 to 99 days while away from home, resuming normal operation upon their return. To activate, press the 'H' button, set the number of days away, and the desired temperature. The chosen number of days will count down on the display. It's advisable to set the holiday mode for one day less than the actual duration to ensure the house is warm upon return. This mode can be cancelled at any time by pressing the Home button.
Frost Protection Mode: This function is useful for turning off heating permanently, typically in summer. By switching the slider to OFF, the thermostat enters Frost Protection Mode, displaying a snowflake symbol and maintaining a set temperature of 5°C to prevent freezing. To exit, switch the slider back to AUTO.
Time and Date Settings: The time and date are factory-set, and the unit automatically handles changes between summer and winter time. However, users can manually adjust these settings if needed. This involves using the +/- buttons to set hours, minutes, day, month, and year, and choosing between 12-hour or 24-hour clock formats.
Battery Replacement: A low battery symbol on the LCD indicates that batteries need replacement. The battery compartment is located under the fascia cover. High-quality alkaline cells are recommended. All settings, including time and factory pre-set heating times, are retained during battery replacement (assuming the backup battery is functional). If the display goes blank, it's a sign that batteries need to be replaced.
Resetting the Unit: The unit can be restored to factory default settings by holding the Next button and pressing the reset button.
Important Note: Interference with sealed parts of the device will void the guarantee. The manufacturer reserves the right to alter designs, specifications, and materials without prior notice for continuous product improvement.
General| Display | LCD |
|---|---|
| Temperature Range | 5°C to 35°C |
| Connectivity | Wired |
| Power Source | Mains |
| Output Type | Relay |
| Number of Outputs | 1 |
| Type | Programmable thermostat |
| Power Supply | 230V AC |
| Switching Current | 3A (resistive) |
| Humidity Range | 20% to 80% RH (non-condensing) |
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