Technical data

Energy Technology
Ltd.
5
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Description ofDescription of
Description of
Boiler Contr Boiler Contr
Boiler Contr Boiler Contr
Boiler Contr
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Menu/Reset Button
This button has three functions
1. Resetting of fault conditions: - When the display text is flashing on and off, a boiler fault is indicated. The type
of fault is displayed on the screen. Please refer to the fault finding section on page 56 for a description of these
faults. The boiler control is reset by pressing the Menu/Reset button once.
2. Inspection of boiler operating parameters:- When the display is not flashing (ie when the boiler is in normal
operation), the Menu/Reset button may be used to inspect the boiler operating parameters.
Press once - Display shows “T1 Sup --°C” - This is the flow water temperature from the boiler.
Press twice - Display shows “T4 Ret --°C “ - This is the return water temperature to the boiler.
Press three times - Display shows “T5 DHW --°C” - This is the domestic hot water storage temperature. A temperature
is shown only if the hot water temperature sensor (RVR Stock no: SBA021) is connected to terminals 1 & 2 on the
front terminal block of the boiler.
Press four times - Display shows “T6 Out --°C” - This is the outside air temperature. A temperature is shown only
if the outside air temperature sensor (RVR Stock no: SPR950) is connected to terminals 3 & 4 on the front terminal
block of the boiler.
Press five times - Display shows “T7 Sec --°C” - This is the mixed flow temperature in the secondary heating circuit.
This menu item is displayed only if the boiler is configured for a mixing valve circuit and the MR03 regulator is
installed.
Press six times - “Revolu -- R/s” - This is the burner blower speed.
Press seven times - Display shows “Pump 1 --%” - This is the speed of the circulation pump as a percentage of its
maximum speed.
Press an eighth time and the display returns to normal displaying the supply water temperature and the date & time.
3. Pop-Up menu function - This function is accessed by pressing and holding the button for at least three seconds.
The following parameters may now be adjusted.
Day setpoint temperature
Timeclock overide function
Domestic hot water storage temperature
Current Day and Time
Timeclock On and Off times for central heating and water heating.
Setback temperature
Holiday fuction
Installation codes
The pop-up menu is navigated using the “+” and/or “-” buttons. The user may move between the menu points as
shown in table 1. Menu parameters are adjusted by pressing the menu/reset button when the required menu point
is shown on the screen. Values are then adjusted using the “+” and/or “-” buttons. After adjustment the value is
saved by pressing the menu/reset button once.
When all adjustments are completed, exit the pop-up menu by moving to [Back] using the “+” and/or “-” buttons and
pressing the menu/reset once.
[*1] Day Temperature
This may be used to adjust the boiler output when weather compensation is used. The default value is 20°C and can
be adjusted between 5C and 30C. Press the menu/reset once to enter adjustment mode. The “+” and/or “-” buttons
may be used to alter the value and cause a parallel displacement in the weather compensation line. The new value
is saved by pressing the menu/reset button. Note: This menu point is visible only when weather compensation is
enabled.
[*2] Party
The “Party” menu point overides the boiler time programs. It can be set from 0 - 24 hours and returns to 0 once the
time has expired. Press the menu/reset button once and then adjust the value using the “+” and/or “-” buttons.
Press the menu/reset button once again to save.
[*3] Temp DHW
Press the menu/reset once to enter adjustment mode. The domestic hot water storage temperature is adjusted
using the “+” and/or “-” buttons and saved by pressing the menu/reset once. The adjustment range is between 40
and 60°C.
[*4] Day/Time
The current day, hour and minute may be adjusted. Move between the day, hour and minute values using the menu/
reset button and change the settings using the “+” and/or “-” buttons as required.
1.0 user instructions for
the micromat boiler