️🚨 This product is no longer manufactured
The descriptions and diagrams below are for information only.
Delta Pro S 25
Floor standing combination boiler. Offers exceptional heating and hot water performance.
- TANK-IN-TANK TECHNOLOGY
- Available in Gas, Oil and Propane
- label_energy_FUEL
- Boilers
- DHW Production
- Standard
- Concentric
- Floor installation
# GTIN : 5400891001318
# P/N : 04633201
- 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
- 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
- Flue reduction collar with easy access for servicing.
- Rigid polyurethane foam insulation.
- PVCC dip tube with cold water diffuser.
- Burner (not provided)
- Burner chamber plate with refractory ceramic fibre insulation.
- 95°C cut-off thermostat and manual reset safety thermostat pocket.
- Flue tubes.
- Turbulators.
- Stainless steel "Tank-in-Tank" hot water cylinder.
- Primary circuit (heating).
- Combustion chamber.
- Boiler base.
- Heating flow.
- Heating return.
- Domestic hot water outlet.
- Domestic cold water supply.
- Primary hot water safety valve [7 bar]
- Primary heating safety valve [bar 3]
- Flue connection Ø 100 mm
- Drain down valve
Constructive characteristics |
||
|---|---|---|
| Capacity (total) | 158 | L |
| Capacity (primary) | 83 | L |
| Capacity (domestic hot water) | 75 | L |
| Capacity expansion tank(s) | - | 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 | % |
| CO emissions max output | 1 | ppm |
| Mass rate of combustion products (gas) | 47 | kg/h |
| NOx class (EN15502) | 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 | 83 | W |
| Electrical power requirements | 0,4 | A |
Eco Design Fields |
||
| Seasonal space heating efficiency (35°C) | 80.1 | % |
| Dimensions A | 1615 | (mm) |
|---|---|---|
| Dimensions B | 1386 | (mm) |
| Dimensions C | 360 | (mm) |
| Dimensions D | 1445 | (mm) |
| Dimensions E | 1445 | (mm) |
| Dimensions F | 1400 | (mm) |
Technical brochure |
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|---|---|---|
|
Delta Pro S & Pro Pack - Installation, operations and maintenance instructions |
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