ACV Compact A, Product Catalogue

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High efficiency combination boilers 29
Technical Data
Delta Pro
High efficiency combination boilers 28
Performance Data
Dimensions
Delta Pro 25 Delta Pro 45 Delta Pro 55
Input power [input] kW 27.9 50.0 61.0
Useful nominal power [output] kW 26.0 45.0 55.0
Efficiency % 89.6 90 90.1
Total capacity L 158 127.5 151
Primary capacity L 83 62.5 68
Heating connection Ø 1" [F] 1" [F] 1" [F]
Domestic hot water connection Ø
3/4
" [M]
3/4
" [M]
3/4
" [M]
DHW cylinder heat exchange surface m 2 1.59 1.99 2.46
Heating circuit pressure drop mbar 15 25 37
Flue gas circuit pressure drop mbar 0.25 0.30 0.45
A B C D E F Ø G H I J K L Kg (*)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
Delta Pro 25 1760 540 584 1386 360 200 100 220 1445 1445 928 1400 145
Delta Pro 45 1760 540 584 1386 390 200 100 220 1445 1445 928 1400 168
Delta Pro 55 1760 540 584 1586 390 200 100 220 1645 1645 928 1600 200
(*) Empty weight without burner
BG 2000-S Low NOx air/gas premix
burners are outstanding not only for
their eco-friendly design but also for
their incredibly silent operation. They
are fitted with automatic ignition and
an ionisation flame detector.
Floor standing combination
boiler. Offers exceptional heating
and hot water performance.
Available in Gas, Oil and Propane.
Benefits
The Delta Pro is reliable, economical and easy to use and maintain. It
is also oil, natural gas or propane compatible. The Delta Pro offers
versatility and convenience.
Product Features
• 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
- Pressure jet 28 sec or 35 sec oil
• Anti-Legionellae: hot water stored at consistently high
temperature
• Fully insulated with rigid polyurethane foam
• Stove enamelled casing
• Control panel including thermostats, thermometer, indicators and
on/off switch
• 26 to 55 kW output
• Can be used in battery formation for high output installations
• Vented or unvented use, with mains pressure SystemPaks
available
• Primary heating sealed system kits also available
1. Flue reduction collar with easy access
for servicing
2. Rigid polyurethane foam insulation
3. PVCC dip tube with cold water diffuser
4. Control thermostat and thermometer
bulb
5. Burner chamber plate with refractory
ceramic fibre insulation
6. 95 °C cut-off thermostat and manual
reset safety thermostat bulb
7. Flue tubes
8. Turbulators
9. Stainless steel "Tank-in-Tank" hot water
cylinder
10. Primary circuit (heating)
11. Combustion chamber
12. Boiler base
13. Heating flow
14. Heating return
15. Domestic hot water outlet
16. Domestic cold water supply
17. Expansion relief valve [6 bar]
18. Primary heating safety valve [3 bar]
19. Flue connection Ø 100 mm
20. Drain down valve
Delta Pro 25 Delta Pro 45 Delta Pro 55
Litres in first 10 minutes 40°C 268 316 362
Litres in first 10 minutes 45°C 202 275 348
Litres in first 10 minutes 60°C 117 161 209
Litres in first hour 40°C 806 1284 1533
Litres in first hour 45°C 672 911 1156
Litres in first hour 60°C 384 549 689
Continuous flow 40°C Ltrs/hr 645 1161 1405
Continuous flow 45°C Ltrs/hr 564 763 970
Continuous flow 60°C Ltrs/hr 320 465 576
Initial heat up time 60°C min 32 16 16
Tank reheat time at 60°C
Initial heating time Minutes 32 16 16
After drawing off 140 litres at 45 °C Minutes 15 9 7
Delta Pro 25/45/55