Finalizing Work; Reading Out Measured Values; Reading The Various Current Values - DeDietrich MCA Pro 45 Installation And Service Manual

5. Commissioning

5.5 Finalizing work

1. Remove the analyzer probe.
2. Put the flue gas sampling plug back in place.
3. Refit the front panel. Tighten the two screws by a
quarter turn.

4. Push button to return the boiler to normal
operating mode.
5. Raise the temperature in the heating system to
approximately 158ºF/70ºC or desired setpoint.
6. Shut down the boiler.
7. After about 10 minutes, vent the air in the heating
system.
8. Switch on the boiler.
9. Check for leaks in the flue and air inlet connections.
10. Checking the system pressure. If necessary,
top up the water level in the heating system
(recommended system pressure between 22 - 30
psig/1.5 - 2 bar ).
11. Test the ignition system of the boiler. For this test,
close the gas shut-off valve under the boiler: In
a red flashing display the fault code E:14 must
appear (No ignition).
12. Tick the gas category used on the rating plate.
13. Explain the operation of the installation, the boiler
and the regulator to the users.
14. Give all the instruction manuals to the user.

5.6 Reading out measured values

The automatic control unit continuously measures
various boiler parameters. These parameters can be
read off the boiler control panel.

5.6.1. Reading the various current values

The following current values can be read off the
information menu :
• 5t = State.
• 5u = Sub-status.
• t1 = Supply temperature ºF/ºC.
• t2 = Return temperature ºF/ºC.
• t3 = DHW tank temperature ºF/ºC.
• t4 = Outdoor temperature ºF/ºC (Only with an
outdoor temperature sensor: Optional).
• t5 = Solar boiler temperature ºF/ºC.
• t6 = Flue gas tempreature ºF/ºC.
• 5p = Internal set point ºF/ºC.
• fl = Ionization current (μA).
• ñf = Fan speed in rpm.
• pr = Water pressure psig/bar.
• p = Supplied relative heat output (%).
MCA-Pro ISM Rv.4.1 2/2017
MCA Pro 45/65/90/115
71