User Manual for Secure C-Stat 17-B Programmable Room Thermostat

Quick guide from the manual

The Secure C-Stat 17-B is a 7-day programmable room thermostat designed to control central heating. It features a large display and intuitive interface. Key operations include adjusting temperatures, setting time schedules, and using override modes. Ensure the thermostat is not covered by curtains or furniture, as it requires a free flow of air to sense temperature accurately. Keep it away from heat sources like lamps or electric fires.

Display and buttons

The display shows the actual room temperature, set temperature, day of the week, and time of day. Use the four buttons below the screen to operate the unit:

• BACK: Returns to the previous screen or cancels an action.
• - Button: Decreases values or navigates menus.
• + Button: Increases values or navigates menus.
• ENTER: Confirms selections and accesses menus.

Press any button to illuminate the back-lit display for 10 seconds.

Temperature overrides

You can temporarily or permanently override the programmed temperature:

• Temporary Override: Press the '-' or '+' buttons to adjust the temperature. The new setting will remain until the next scheduled time change.
• Temporary Override with Time Extension: Adjust the temperature, press ENTER, then use the '+' button to set the duration (up to 4 hours) and press ENTER again.
• Permanent Override (Hold): Adjust the temperature, press ENTER, then press '+' repeatedly until 'HOLD' appears on the display. Press ENTER to confirm. To cancel, press BACK then ENTER.

Programming

The thermostat allows for six time and temperature settings per day. To program:

1. Press ENTER twice to access the MAIN MENU.
2. Select 'Programme' and press ENTER.
3. Follow the on-screen prompts to select the day, time period (P1-P6), and desired temperature.
4. Adjust hours and minutes using the '-' and '+' buttons, confirming each step with ENTER.
5. You can copy settings to other days by following the 'To copy the same programmes' process on the display.

Menu options

Access the MAIN MENU by pressing ENTER twice. Options include:

• Programme: Adjust time and temperature settings.
• Standby: Puts the unit into frost protection mode.
• Holiday: Sets a temporary standby mode with specific start and end dates.
• Time / Date: Adjusts the internal clock and calendar.
• Set Up: Accesses advanced configuration options.

Advanced settings

The SET UP menu allows configuration of:

• Clock format: Switch between 24-hour and AM/PM.
• Daylight saving: Enables automatic adjustment for GMT/BST.
• Temperature limits: Sets the minimum and maximum allowable temperatures.
• LC cycles: Configures energy-saving software based on heating type (Oil, Gas, Electric).
• Optimum start: Anticipates heating needs to reach the target temperature by the set time.
• Tamper setting: Allows setting a 4-digit PIN to prevent unauthorized adjustments.

Maintenance and troubleshooting

If the display becomes frozen or scrambled, press both the BACK and ENTER buttons simultaneously to reset the unit to factory settings. The C-Stat 17-B uses 2 standard AA alkaline batteries. When the 'Low Battery' warning appears, replace the batteries promptly. The C-Stat 17-M is mains-powered and does not require batteries.