INSTALLATION INSTRUCTIONS
9
2.6 DIGITECH
®
CS Printed Circuit Board (MIAH4)
Technical characteristics
Adjustments for service personnel only
•
Standard (30/80°C) / reduced (25-45°C) central heating temperature
•
Water hammer prevention function
•
Central Heating timer - (adjustable from 0 to 7,5 minutes)
•
Central Heating pump overrun timer
•
Domestic Hot Water pump overrun timer
•
Minimum Gas pressure setting
•
Maximum Heating Load
•
Heating output rising time
•
Central heating maximum and minimum Set Point adjustment
•
Domestic Hot Water maximum Set Point Adjustment
User settings
•
Heating Temperature setting (30-80°C) – (25-45°C)
•
D.H.W. temperature setting (35-60°C)
•
Summer only mode / Winter only mode / Winter mode selection
Operation/Functions display
•
Lock-Out
•
Water low pressure
•
Temperature display
•
Flame presence ON (3 power steps)
•
Error History display (last 5 errors)
To switch the boiler OFF, press
INFO button, the symbol
appears on the display. The
central heating frost protection system, the circulating pump inactivity protection and 3-way valve
inactivity protection functions remain enabled.
If the boiler was previously ON, it is switched OFF and the fan overrun and pump overrun functions are
enabled.
2.7 Control panel
Control panel Key
1. HEATING TEMPERATURE SETTING BUTTONS
2. INFO BUTTON:
PRESS ONCE TO DISPLAY
TEMPERATURES AND INFO (see 2.8 INFO menu
display). KEEP INFO BUTTON PRESSED FOR 5
SECONDS (in OFF MODE) TO DISPLAY THE LAST
5 ERRORS.
3. MODE SELECTION BUTTON
SUMMER ONLY /
WINTER ONLY / SUMMER-WINTER / OFF.
4. RESET BUTTON:
ERROR RESET – FLUE TEST
FUNCTION ACTIVATION (CHIMNEY-SWEEPER -
KEEP IT PRESSED FOR 7 SECONDS).
5. DOMESTIC HOT WATER TEMPERATURE
SETTING BUTTONS.
KEEP BUTTONS ‘+’ AND ‘-‘
PRESSED FOR 5 SECONDS TO ACTIVATE THE
DISPLAY BACKLIT MODE FOR A CONTINUOUS
PERIOD OF 10 MINUTES.
6.
TERMINAL BLOCK FOR EXTERNAL WIRING.
7.
LCD DISPLAY.
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Summary of Contents for RK 25 /B
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