Gas Valve; Changing The Type Of Gas; Parameter Settings - UTICA BOILERS MAC-150 Manuel D'installation, D'utilisation Et D'entretien

13.3 GAS VALVE

Gas valve key
Pi
Gas supply inlet pressure tap

CHANGING THE TYPE OF GAS

During the first installation the boiler carries out an automatic commissioning function. The system
is able to detect the gas type present in the network and the setting with the correct gas can be
easily made only by pressing two buttons together (See section 12.1 "COMMISSIONING").
In case the change of the gas has to be made after the first installation the following operations
have to be made:
• change the parameter P02 (see section 12: "SPECIAL FUNCTION" and section 14:

"PARAMETER SETTINGS";

• check the gas pressure is suitable for the gas: Gas A (NG) = 7.0 in w.c. (17.4 mbar); Gas E (LPG) = 11.0 in w.c. (27.4 mbar);
In both cases, at the end of the first commissioning or after a changing of the gas, the new label with the indication of the gas,
supplied with the boiler has to be added close to the data plate of the boiler replacing the original one.
A verification of the CO concentration on the flue is recommended.
2
14. PARAMETER SETTINGS
To program the parameters of the boiler's electronic board, proceed as follows:
• Press and together and hold them down for 6 seconds until program row "P01" appears on the display alternated with
the set value;
• Press to scroll the list of parameters;
• Press , the value of the selected parameter begins flashing, press
• Press to confirm the value or press
IMPORTANT INFORMATION
Further information concerning the parameters listed in the following table are supplied together with the required
accessories.
P01 Manufacturer information
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
P03
05 = appliance with external storage indirect tank
08 = heating only appliance
13 = instantaneous appliance with pre-heat function for solar application
Programmable relay 1 setting (optional):
00 = no function is associated
01 = close contact with a room thermostat request (other than the ECR thermostat)
02 = close contact with a ECR room thermostat request
03 = relay for indicating low water pressure
04 = relay for error code display
P04 05 = relay for kitchen fan function
07 = relay for post circulation pump
09 = DHW relay on with DHW program setting
10 = DHW relay on with DHW request; if P64 = 1 relay on with CH and DHW request
13 = relay for Cooling function
14 = close contact with a room thermostat request (120V~) with post circulation
15 = close contact with a open therm remote control request with post circulation
Programmable relay 2 setting (optional):
P05
(The same configurations as Relay 1-P04)
Outdoor temperature sensor input configuration
00= with an outdoor temperature sensor connected, the external temperature value has influence to
calculate the heating flow temperature setpoint
P06
01= with an outdoor temperature sensor connected, the display shows the external temperature
value (no influence)
02...05 = no function is associated
to exit without saving.
DESCRIPTION OF PARAMETERS
34
to change the value;
FACTORY SETTINGS
MAH-125 MAC-150
08
240011317, Rev. F [03/31/2017]
Pi
01
00
00
02
04
00