Download - Technical Improvements Micra Range
Technical Improvements Micra Range
Name of project: Micra Vintage
Boilers involved: Micra 2
Name of new boiler: Micra 2
•The names will be the same as before
•The modifications will be intended as technical improvements
• The boiler codes will be same as for current models
• No technical functions added
•Same control panel
•Same dimensions
•Same aesthetics
AESTHETICS MICRA
Current range
Micra 2
New range
Micra 2
MICRA 2 AESTHETICS
How to distinguish current from new in the
field?Instructions’ sticker on flap
Current
New
Micra 2 boilers
NATURAL DRAUGHT FAN ASSISTED
CURRENT
INTERNAL VIEW
Micra 2 E Micra 2 SE
New
NEW
INTERNAL VIEW
Electric 3-way valve
Flowmeter
New fixing way for DHW exchanger
HYDRAULICS
New
Micra 2
Current
Micra 2
The same Fixing Template as before
Current
Micra 2
HYDRAULICS
New
Micra 2
New flowmeter for water detection
• Pre-assembled by supplier (FITRE) ensuring functioning.
• Opportunity to fit the liter-counter at the top
• REED Contact
• Tongues’ support to improve fixing and stability
• Hexagonal base to avoid torsional stress
HYDRAULICS
Connections bracket
Flowmeter’s base
New 3-way motorized valve – Supplier “Giannoni”
HYDRAULICS
DHW NTC
Supplier “EPCOS”
Heating NTC Supplier “EPCOS”
The same features as in current version
Sparkling Igniter
Supplier “ANSTOS”
HYDRAULICS
ELECTRONICS - main PCB
Supplier “Honeywell”
Current
Micra 2
Micra Condensing
Supplier “Nordgas”
New
Micra 2
Micra Condensing
Same features and technical characteristics as in current version
ELECTRONICS - main PCB
6 MICROSWITCHES
ELECTRONICS - main PCB
SW1 = OFF --- boiler works with NATURAL GAS
SW1 = ON --- boilerworks with LPG
SW2 = OFF --- Range temperature setting TA1 Standard: 35°C / 78°C
SW2 = ON --- Range temperature setting TA1 Ridotta: 25°C / 45°C
SW3 = OFF --- Delay of 3 minutes before restarting, after heating demand
SW3 = ON --- No delay setted
SW6 = OFF --- Water automatic fill-in not enabled
SW6 = ON --- Water automatic fill-in enabled (Must be OFF for your boilers)
SW4 = OFF --- Max achievable temp on DHW demand OFF 75°C / ON 65°C (Standard)
SW4 = ON --- Max achievable temp on DHW demand OFF Tset + 3°C / ON Tset +2°C
SW5 = OFF --- Working pump STANDARD
SW5 = ON --- Working pump OFF during heating demand
How will microswitches be on boiler?
–New boilers = All OFF (SW1 based on gas type)
–Spares = All OFF
ELECTRONICS – LCD
Supplier “Honeywell” Supplier “Nordgas”
Current
Micra 2
New
Micra 2
Same features and technical characteristics as in current version
New Micra Vintage range will manage the same accessories as current Micra 2 range
ACCESSORIES
SUMMARY
...will change:
•Supplier of main PCB
•Supplier of LCD
•Supplier of NTC sensors
•Supplier of Sparkling igniter
•3-way valve
•Brass hydraulic group
•DHW exchanger
•DHW flowmeter
...will not change:
•Name and codes of boilers
•Control panel
•Combustion chamber
•Gas valve
•Dimensions
•Accessories
•Aesthetics