High Efficiency Boilers

Delta

Delta Pro Pack 25

Floor standing combination boiler. The Delta Pro Pack is comparable to the Delta Pro S but also offers accessories 21 to 24.

  • TANK-IN-TANK TECHNOLOGY
  • Available in Gas, Oil and Propane

# A1002065

  • Gas
  • Boilers
  • DHW Production
  • Standard
  • Concentric
  • Floor installation
  • High performance, low cost combined boiler and water heater
  • Stainless steel Tank-in-Tank design
  • Choice of Burner - Low NOx premix burner, Pressure jet natural gas or LPG or Pressure jet 28 sec or 35 sec oil
  • Anti-Legionellae: hot water stored at consistently high temperature
  • Fully insulated with rigid polyurethane foam
  • Stove enameled casing
  • Control panel including thermostats, thermometer, indicators and on/off switch
  • 26kW to 55kW output
  • HEP pump
  • Non Ecodesign compliant
  1. Chimney reduction with easy access
  2. Polyurethane foam insulation
  3. Dip tube PVCC
  4. Burner (not supplied)
  5. Fire door
  6. Limit thermostat bulb 95 °C and safety thermostat with manual reset
  7. Flue gas tubes
  8. Turbulators
  9. Stainless steel "Tank-in-Tank" tank
  10. Primary circuit (heating)
  11. Combustion chamber
  12. Socle of the boiler
  13. Heating outlet
  14. Heating return
  15. Domestic hot water supply
  16. Cold water supply
  17. Sanitary safety valve [7 bar]
  18. Heating safety valve [3 bar]
  19. Chimney connection Ø 100 mm
  20. Drain valve
  21. Sanitary expansion vessel [2 liters]
  22. Heating circulator with integrated automatic drain
  23. 4-way motorized mixing valve
  24. Heating expansion vessel [12 liters]

Constructive characteristics

Capacity (total) 158 L
Capacity (primary) 83 L
Capacity (domestic hot water) 75 L
Capacity expansion tank(s) 1 x 12 L
Chimney connection 100 Ømm
Connection - heating 1 F Ø"
Connection - DHW 3/4 M Ø"
Connection - re-circulation / safety valve 3/4 M Ø"
Max operating temperature 90 °C
Water pressure drop boiler at Δt = 20°C 15 mbar
Max service pressure heating (primary) 3 bar
Max service pressure (DHW) 8,6 bar
Pressure drop flue gas 0,25 mbar
Weight (empty) 145 kg

Heating characteristics

Heating time from 10 to 60°C - 6 kW (3 kW) 32 min

Combustion

Input max (heating) HCV 31,4 kW
Input max (heating) LCV 28,3 kW
Combustion efficiency 92,2 %
Efficiency (max output) 80/60°C 92,20 %
Mass rate of combustion products (gas) 47 kg/h
NOx class (EN483) 5
Output power max (80/60°C) 25 kW

Domestic hot water performance

Peak flow at 40°C 268 L/10’
Peak flow 1st hour at 40°C 806 L/60’
Continuous flow at 40°C 645 L/h

Electrical Characteristics

Voltage 230 V
Frequency 50 Hz
Protection IP 30
Electrical consumption 176 W
Electrical power requirements 0,8 A
Dimensions A 360 mm
    • Technical brochure

    • Delta

    • 4.84 MB – ru

    • Technical brochure

    • Delta Pro S & Pro Pack - Installation, operations and maintenance instructions

    • 4.82 MB – en

    • Technical brochure

    • Delta Pro - Concentric Kit

    • 1,010 KB –

    • Marketing brochure

    • ACV Products Overview 2017

    • 3.96 MB – en

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