Boiler/Hot Water

 

Unical’s Italian-made boilers cover domestic, professional, and industrial models. Known for quality and durability, Unical delivers robust heating solutions that meet the highest performance and efficiency standards.

!DEA

 

Wall hung gas boiler for heating only or for heating and D.H.W. production, natural draught or room sealed version, with electronic ignition

 

Output range: from 23 to 32 kW

 

  • Mono thermal or bi-thermal heat exchanger
  • Just one electrode for ignition and flame detection
  • Continuous and proportional gas modulation through microprocessor, both in heating and D.H.W. production mode
  • Anti-frost protection on the heating primary circuit on two levels: activation of internal heating and safety lockout with signalling in case of gas lack
  • Pump anti-jamming timer in case of long inactivity period
  • Heating adjustment range 45 - 78 °C
  • D.H.W. adjustment range 35 - 57 °C
  • Two NTC sensors for temperature control and D.H.W. priority
  • Limit thermostat
  • Circulating pump with built-in automatic air vent
  • Visualization of burner lockout for lack of gas and faulty diagnostics with alphanumeric indication on wide multifunction, back-lighted LCD display
  • Completely metallic casing, epoxy-polyester powder painted and insulated with 8 mm thick thermo-reflecting thermo-acoustic material
  • Easy maintenance via frontward rotating panel and frontal access.
  • Isolating protection degree IPX5D (IPX4D for AC - natural draught version)
  • Manometer
  • Automatic differential bypass
  • C.H. 6 liters expansion vessel
  • Safety valve adjusted at 3 bar
  • Minimum water pressure switch
  • D.H.W. priority flow switch with filter
  • Electrical connections for on/off or modulating room thermostat and outer temperature sensor

 

Options:

  • Hydraulic and gas connections cover
  • D.H.W. production kit for heating only boilers

MODAL 64-291

 

Pressurized steel boiler for gas or oil pressure jet burners

 

Output range: from 64 to 291 kW

 

  • Reversed flame combustion chamber

  • Highly resistant to condensate thanks to:
    - Furnace misalignment against the outer shell
    - Patented fin effect on the welding seams of pipes onto the rear tube plate

  • Anti-condensing helicoidal turbulators

  • Heat losses reduction, due to the strong insulation (60 mm) with rock wool of the boiler body and to the ceramic fibre insulation on the door

  • Adjustable door with double opening (left and right)

  • Separate panel board

  • Maximum working pressure: 6 bar; it is possible, under specific request, to provide a MWP of 7 - 8 - 9 - 10 bar

Aluminium condensing:

 

MODULEX EXT 100-1500

 

System composed by a modulating, Low NOx, multi-burners, condensing boiler, for indoor/outdoor installation, IPX5D

 

Output range: from 100 to 1500 kW

 

  • Maximum working pressure: 6 bar

  • For operation in deep sliding temperature, with natural gas or LPG.

  • Primary ring with hydraulic separator (optional)

  • Plate heat exchanger (optional), modulating pump, “Y” shaped filter (excepted the filtering cartridge), additional safety devices kit

  • Each aluminum /silicon/magnesium module has its own combustion chamber with a total radiation burner, modulating fan, gas valve, flame and ignition BMM control device, NTC sensor for local temperature control and safety thermostat

  • Total pre-mix modulating burners, with flame surface in metallic radiating mesh. The air– gas premixing occurs within the fan, with built-in check valve

  • Constituted from pre-assembled thermal modules without hydraulic interception in between.

  • Air suction system from the boiler room or directly from outside of the boiler room through ducts (optional)

  • For indoor / outdoor installation, made with totally water proof casing, IPX5D, in electro-galvanized steel plate and epoxy polyester powder painted in grey color

  • Possibility of cascade installation of 2 or more boilers (up to 8)

  • Logic of operation: repartition of the requested power on the larger number of modules, firing at the lowest possible rate (up to 12 kW for the models 100 to 350 or up to 22 kW for the models 440 to 1500) in order to obtain the maximum efficiency

  • D.H.W. production through a priority sensor, that controls a dedicated loading pump or a 3-way diverting valve

  • Supervision of boiler operation and temperatures status

  • Alarms management and parameters setting

  • Relay for the activation of a constant speed pump

  • Ufly P thermoregulation controller inserted in the foldaway facia panel

 

BCM FUNCTIONS:

  • 0÷10 V signal to the modulating pomp according to the parameters of the CH installation (inclusive in the supply)
  • Analogical outlet 0÷10 V for the control of a modulating pump
  • Emergency operation: anti-blackout through BCM:
  • Restoration of the normal operation 60 seconds after the black-out, at “Constant Setpoint”: 70°C (or otherwise adjustable), max. output 50%
  • Alarm signaling relay
  • Hydraulic and gas connections are reversible up to the model 350
  • Flue outlet possible on three different positions (R.H. / L.H. or rear side of the boiler)

 

Optional accessories:

  • Acidic condensate neutralizers
  • Kit CONTROL MANAGER Ufly P
  • Dedicated smokes evacuation kit

ELLPREX 420-7000

 

Pressurized steel boiler for gas, oil or heavy - oil pressure jet burners, with floating furnace from the model 730 up to the model 7000

Output range: from 420 to 7000 kW

 

  • Reversed flame combustion chamber

  • Elliptic boiler body up to the model 970 kW

  • Highly condensate resistant thanks to:
    - Misalignment of the furnace against the outer shell
    - Patented fin effect on the welding seams of pipes onto the rear tube plate

  • Silent operation thanks to low counter pressure on smoke side

  • High mechanical resistance thanks to floating furnace (for the models 730 to 7000 the furnace, welded only to the front tube plate, is free to dilatate)

  • Anti-condensing helicoidal turbulators

  • Heat losses reduction, due to the strong insulation (80 mm) with rock wool of the boiler body and (up to the mod. 970), to the ceramic fibre insulation on the door (- 30% of radiation losses)

  • Adjustable door with double opening (left and right)

  • Approval as boiler with ranged output

  • External panel board with mechanical control and safety thermostats (as an optional extra an outer compensator can be supplied)

  • Easy installation

  • Construction according to the EN 303, part 1.

  • Maximum Working Pressure: 6 bar; (for models 1100÷4000 it is possible, under specific request, to provide a MWP up to 10 bar)

  • Two bulb holders, capable to accommodate 3 bulbs each

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