Introduction
The ENGO E901 Programmable Wired Thermostat is designed to provide precise control over your home’s heating system. This versatile thermostat is suitable for managing central heating, offering easy wired boiler control for various systems including combi gas boilers, oil boilers, and heat pumps. It allows for the creation of personalized heating schedules to enhance comfort and energy efficiency. The E901 connects directly to your boiler, functioning as a reliable wired boiler control thermostat. It features selectable control algorithms, including hysteresis or TPI, to optimize boiler performance and reduce energy consumption. The thermostat supports 6 time and temperature change points daily, which can be customized for each day of the week through its intuitive programming process.
Figure 1: The ENGO E901 Wired Thermostat, showing its clear digital display and compact design.
Figure 2: The ENGO E901 thermostat is compatible with Combi Boilers, Oil Boilers, and Underfloor Heating systems.
Setup and Installation
Power Supply
The ENGO E901 thermostat is battery-powered, requiring 2xAA batteries for operation. Ensure batteries are inserted correctly according to polarity markings.
Wiring Connections
The E901 is a 2-wire heating thermostat designed for wired connection to your heating system. Refer to the detailed connection diagrams below for proper installation with different boiler types.
Figure 3: Technical information and connection diagrams for the ENGO E901 thermostat, including setups for gas boilers, pumps/actuators, and control boxes. Always consult a qualified electrician for installation if unsure.
Mounting
The thermostat is designed for surface mounting. Choose a suitable location away from direct sunlight, drafts, or heat sources that could affect temperature readings. Ensure the mounting surface is flat and stable.
Operating Instructions
The ENGO E901 features a hidden button panel for easy programming and adjustments. Slide the front cover down to reveal the control buttons.
Figure 4: The ENGO E901 thermostat with its hidden button panel revealed, showing the various control buttons for programming and mode selection.
Setting Time and Date
Upon initial setup or after battery replacement, you may need to set the current time and day. Refer to the specific instructions in the full manual for navigating the menu to adjust these settings.
Programming Schedules
The thermostat allows for 6 time and temperature change points for each day of the week. This enables you to create a heating schedule that aligns with your daily routine. Use the programming buttons to set desired temperatures at specific times throughout the day.
- Holiday Mode: Activate this mode when you are away for an extended period to maintain a lower, energy-saving temperature.
- Boost (Party) Mode: Temporarily override the current schedule to achieve a higher temperature for a short duration, ideal for unexpected needs.
Control Algorithms
The E901 offers a choice between hysteresis and TPI (Time Proportional & Integral) control algorithms. These algorithms optimize boiler cycling to maintain stable temperatures and improve energy efficiency. Consult the full manual for details on selecting and understanding these modes.
Maintenance
Battery Replacement
When the battery indicator appears on the display, replace the 2xAA batteries promptly to ensure continuous operation. Open the battery compartment, remove old batteries, and insert new ones, observing correct polarity.
Cleaning
Clean the thermostat's exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the unit, as this may damage the casing or internal components.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low or dead batteries. | Replace the 2xAA batteries. |
| Heating system not responding. | Incorrect wiring; boiler issue; thermostat not in heating mode. | Check wiring connections (refer to Setup section). Ensure boiler is operational. Verify thermostat is in an active heating mode. |
| Difficulty with programming. | Unfamiliarity with programming steps. | Review the "Operating Instructions" section and consult the full online manual or YouTube tutorials for detailed guidance. |
| Inaccurate temperature reading. | Thermostat located near heat sources, drafts, or direct sunlight. | Relocate the thermostat to a more suitable position, away from external influences. |
Specifications
- Brand: ENGO
- Model Number: E901
- Color: White
- Product Dimensions: 2.2 x 8.4 x 5 cm
- Item Weight: 320 g
- Power Supply: 2 x AA batteries
- Voltage: 230 Volts (for connected system, thermostat is battery powered)
- Material: Plastic
- Special Features: Programmable, Vacation Mode, Lockable
- Controller Type: Push Button
- Output Control: NO/COM (voltage-free relay)
- Temperature Setpoint Range: 5°C to 35°C
- Display Backlight: Yes
- Control Algorithm: TPI or Hysteresis (±0.25°C or ±0.5°C)
- Communication: Wired
Warranty and Support
Warranty
The ENGO E901 thermostat comes with a 5-year manufacturer's warranty. Please retain your proof of purchase for warranty claims.
Customer Support
For any assistance with installation, setup, or troubleshooting, ENGO Controls offers dedicated support:
- Telephone or Email Support: Direct support is available via phone or email. Contact details can be found on the official ENGO Controls website.
- YouTube Tutorials: Comprehensive video tutorials are available on YouTube for installation and setup assistance. Search for "ENGO E901" on YouTube.
- Online Manual: An instruction manual is included with the product and is also available online for detailed reference.
