Parameter Settings; Description Of Parameters: Factory Settings - UTICA BOILERS MAH-100 Manual

For Natural Gas :
Input (MBH) =
Example: Natural Gas - Gas flow from
Meter = 2 cu ft
Measured time = 72 seconds
=
For Propane (LP):
Input (MBH) =
Input Rate (MBH)
For Metric formulas- See Glossary
2.
Compare measured input to table below. If calculated
input is not in range given in Table 9-2 check firing rate
again after setting the combustion following steps in
section 9.12.
NOTICE
Important! Record any changes made to Parameters on
chart found on Page 46 of the Application Guide supplied
with your boiler.

9.16 Description Of Parameters: Factory Settings

DHW Fast Modulation
P01
00 =Standard Modulation - on DHW call for heat 10 seconds stabilization time before modulation
01 =Fast Modulation- on DHW call for heat 5 seconds stabilization time before modulation
Gas used
P02
00 = Gas A (Natural Gas)
01 = Gas E (LPG Gas)
Hydraulic system
00 = instantaneous appliance
03 = instantaneous appliance with pre-heat function
04 = heating only appliance with DHW thermostat
P03
05 = appliance with external storage indirect tank
08 = heating only appliance
13 = instantaneous appliance with pre-heat function for solar application
Outdoor temperature sensor input configuration
00= with outdoor temperature sensor connected, external temperature value has influence to calculate heating flow
temperature set-point
P06
01= with outdoor temperature sensor connected, display shows external temperature value (no influence)
02...05 = no function is associated
00..02 = No function is associated
03 = This is an input contact for CH request (e.g. trigger phone).
When contact CN2 is closed and Room Thermostat (RT) requiring heat switches burner on.
Note: verify heating mode is enabled (winter or heat only mode)
04 = This is an input contact for Low Temperature Thermostat (e.g. floor heating system).
P07
When Low Temperature Thermostat connected on CN2 cuts out, burner switches off and display shows E178 anomaly.
Note: verify heating mode is enabled (winter or heat only mode)
05 = This is an input contact for external DHW recirculation pump. When contact CN2 is closed the pump runs for a specific
period.
To enable input it is necessary to set parameter P04 or P05 = 08 and P69 = 05.
Pump will run at P19 minutes (Summer/Winter mode or Only Winter mode) or P19/2 minutes (only Summer mode).
P09
Hydraulic Component Setting
Heating set-point setting OT / RT (Open Therm / Room Thermostat 120V~)
00 = with Remote Control (RC) connected, temperature request is RC set-point
P10
01 = Temperature Request is highest set point between RC and PCB
02 = Temperature request is RU setpoint. The RT enable the gas boiler operates
9 - START UP PROCEDURE
3600 x cu ft
seconds
3600 x 2 cu ft
= 100 MBH
72 seconds
9160 x cu ft
seconds
Parameters continued on next page
Table 9-2 Input Rate @ High Fire (MBH)
Approximate Rate @

9.15 Parameter Settings

Program boiler electronic board parameters as follows:
• Press and
seconds until program "P01" appears on the display
alternated with the set value;
• Press or
• Press , value of selected parameter begins
flashing, press
• Press to confirm the value or press
without saving.
Further information in regards to parameters listed in the
following table are supplied together with required accessories
if necessary.
54
100% Fire (MBH)
Size
100 93.5
115 115
125 125
150 150
165 164
205 205
together, hold them down for 6
to scroll the list of parameters;
to change the value;
FACTORY SETTINGS
100,125,165 115,150,205
08
Default 01
240013354 REV B [09/15/2021]
to exit
01
00
00
00
00
00