Prior To Commissioning; Commissioning For The First Time; Automatic Calibration Function - ECR International Utica Boilers MAH-125 Installation, Operation And Maintenance Manual

NOTICE
All connections shall be made and water added before
performing this function.
NOTICE
First ignitions immediately after installation, system will
implement a self-learning procedure to reach correct
ignition level.

9.6 Prior to Commissioning:

• Check system pressure is correct;
• Power boiler;
• Open gas tap (positioned under boiler);
• Select required heating mode. See section 10.4
Operating Modes.

9.7 Commissioning For The First Time:

Turn power to boiler on. Code "000" appears on the
1.
display. Appliance is ready for "commissioning" procedure.
Press at the same time. Hold for 6 seconds. "On"
2.
appears on the display for 2 seconds followed by code
"312" indicating "de-aeration" function is active. This
function lasts 10 minutes.
Boiler will turn on after deaeration function is complete.
3.
Display will show code "000" alternating with % of
ignition power and temperature value (°F / °C).
• During this gas recognition function phase which
lasts about 7 minutes, type of gas being used is
analyzed.
• During this function, assure maximum heat exchange
to heating or DHW system (domestic hot water
demand) by having all heating zones open or all
domestic hot water taps open, in order to prevent
boiler from switching off due to overheating.
• If boiler operates on Gas A (Natural Gas), display
shows NG (Natural Gas) for about 10 seconds. Boiler
is now ready for normal operation.
• If display shows LPG (Gas E), press
together and hold down for at least 4 seconds to exit
without changing factory setting. Boiler will stay set to
Natural Gas.
• If boiler operates on Gas E (LPG) display shows LPG
(Gas E). Press
used.
• If display shows NG (Gas A) and does not recognize
the type of gas used, press
and hold down for at least 4 seconds to exit the
function. Change parameter P02=01 as described in
section 9.12 Parameter
Operation and Maintenance Manual. Perform Automatic
Calibration Function. Manual Calibration may be
necessary if combustion is not within specified range.
9 - START UP PROCEDURE
and
for at least 6 seconds to confirm gas
and together
of boiler Installation,
Settings
Boiler must not shutoff during calibration.
Note
Open all heating zones in heating or DHW
mode to ensure boiler does not shutoff.

9.8 Automatic Calibration Function

Before performing this function verify there are no heat
demands in progress.
During this function ensure there is maximum heat exchange
to the system in Heating or DHW mode (DHW request) to
avoid boiler shutting off due to overheating.
Press and together and hold for about 6 seconds.
When display indicates "On" press
pressing previous buttons.
Important: If display indicates "303" Automatic
Calibration function has not been activated. Disconnect
boiler from main power supply for few seconds and
repeat procedure.
When function is enabled,
1.
display.
After ignition sequence, which can also take place
2.
after few attempts, boiler performs three operations.
Each operation lasts about 1 minute:
• maximum power
• ignition power
• minimum power
Before moving to the following phase, from maximum
3.
power to ignition power and then to minimum power.
and appear on the display.
During this phase, power level reached by boiler and
4.
delivery temperature alternate on the display.
When , and
5.
automatic calibration function has completed.
Press to exit the function. Display will show ESC.
6.
Verify combustion is within specified range. If not,
7.
perform Automatic and then Manual Calibration. (See
Section 9.8)
IMPORTANT: If Calibration function does not
complete, verify unit did not shut down for over-
temperature. Repeat Automatic Calibration. Replace
KEY if Automatic calibration does not complete after
second try.
During initial ignition, burner may not ignite. This may
cause boiler to shut down until any air in gas pipes is
vented. Repeat ignition procedure until gas reaches the
burner. To reset boiler operation, press
2 seconds.
44
within 3 seconds after
NOTICE
and will flash on the
flash together on the display,
NOTICE
NOTICE
240011941 REV G, [06/30/2019]
for at least