Ideal Heating Evojet 1250kW Commercial Condensing Boiler
Product Overview and Technical Specifications
Key Features
The Ideal Heating Evojet 1250kW is a high-efficiency, floor-standing condensing boiler designed for commercial applications. It features:
- 1250kW output
- [Pressure jet] burner
- [Floor standing] configuration
- [Dual fuel] capability
- [BIM] ready
- Compliant with [Part L] regulations
- 2 Year Warranty
The boiler is constructed with a triple flue pass and a titanium stabilised stainless steel heat exchanger for maximum resistance to corrosive condensation.
Features and Specification
The Evojet condensing range offers 14 models with outputs from 150-3000kW, suitable for single or multiple configurations.
- Up to 109.3% part load efficiency
- Designed to operate up to 40°C ΔT, achieving minimum flow rates
- Triple flue pass for high operating efficiencies
- Multiple burner options available (see page 3 for details)
- Dedicated low temperature return
- Stainless steel heat exchanger
- Modulation via 0-10 volt BMS, or RWF controller
Dimensions and Clearances
Dimensions
| BOILER | DIM A | DIM B | DIM C |
|---|---|---|---|
| 1250 | 1170 | 3010 | 2030 |
Minimum Clearances for Operation and Servicing
- FRONT: BURNER LENGTH + 600MM (FOR ACCESS / MAINTENANCE) BOILER LENGTH (FOR CLEANING)
- REAR: 1000mm (Min)
- TOP: 1000mm (Min)
- SIDES: 1000mm (Min)
Boiler Assembly Exploded View
The boiler assembly is comprised of the following components:
- 1. Boiler frame
- 2. Side Panel
- 3. Side Panel
- 4. Rear Panel
- 5. Rear Panel
- 6. Central side panel
- 7. Central side panel
- 8. Top cross beams
- 9. Top rear panel
- 10. Bottom rear bracket
- 11. Bottom rear panel
- 12. Bottom rear panel
- 13. Front top panel
- 14. Top panel
- 15. Top panel
- 16. Top panel
- 17. Top panel
- 18. Front trim panel
- 19. Front trim panel
- 20. Control panel
A technical illustration details the arrangement of these parts.
Technical Specifications
General
| Parameter | Value |
|---|---|
| Dry Weight | 2515 kg |
| Boiler Dimensions | 2030 (H) x 1170 (W) x 3010 (D) mm |
| Boiler Clearances (Front maintain) | Burner Length + 600mm |
| Boiler Clearances (Front clean) | Boiler Length |
| Boiler Clearances (Sides) | 1000mm (Min) |
| Boiler Clearances (Rear) | 1000mm (Min) |
| Boiler Clearances (Top) | 1000mm (Min) |
| Full load efficiency NCV (80/60) | 98.2 % |
| Part load efficiency NCV (50/30) | 108.7 % |
| Seasonal efficiency GCV (Part L vol.2 2022) | 96.0 % |
| Min gas pressure (Nat Gas) | 20* mbar |
Note: Gas train selections are based on standard design requirements of 20mbar gas pressure. Consult sales for alternative conditions or fuel types.
Burner (Low NOx)
| Parameter | Value |
|---|---|
| Fuel | Natural Gas (Type G20) |
| Fuel consumption (Nat Gas) | 129.0 m³/h |
| Boiler output (mean 70°C) | 1277.5 kW |
| Boiler output (mean 40°C) | 1331.3 kW |
| Boiler input (GCV) | 1387.5 kW |
| NOx (GCV EN676) | 59 mg/kWh |
| NOx (at 3% O2 dry flue gas reference) | 63 mg/Nm³ |
| Furnace pressure | 6.8 mbar |
| Furnace volume | 1037.0 dm³ |
| Min burner length | 200 mm |
| Burner hole diameter | 370 mm |
Flue/Air Inlet
| Parameter | Value |
|---|---|
| Flue size | 400 mm |
| Max flue gas mass airflow rate | 0.5675 kg/sec |
| Min-max flue gas temperature | <45 - 75** °C |
** Dependent on return temperature.
Hydraulics
| Parameter | Value |
|---|---|
| Pressure drop ΔT 10°C | 100.4 mbar |
| Pressure drop ΔT 20°C | 28.4 mbar |
| Nominal flow rate At 10°c | 29.86 l/sec |
| Nominal flow rate At 20°c | 14.93 l/sec |
| Min flow rate | 3.94 l/sec |
| Min flow temperature | 30 °C |
| Max flow temperature | 95 °C |
| High limit set point | 110 °C |
| Max working pressure | 6 bar |
| Condensate connection | 1.25 inches |
| Flow connection | DN150 PN6 |
| Return connection (It) | DN150 PN6 |
| Return connection (ht) | DN100 PN6 |
| Safety valve connection | DN80 PN6 |
| Water content | 1825 litres |
Electrical (Primetech Control Panel)
| Parameter | Value |
|---|---|
| Electrical supply | 230 ± 10% 50Hz 1 Ph |
| Current (Max no pump) | 6.3 amp |
| Power consumption | 250 watt |
| Fuse rating | 6.3T amp |
| Insulation class IP | X4D |
Control/Boiler/Burner Operation
| Feature | Status |
|---|---|
| 0-10V DC BMS or Siemens RWF | Optional |
| High limit protection | Standard |
| Boiler temperature gauge | Standard |
| Control thermostat sensor | Standard |
| Safety thermostat sensor | Standard |
| Two stage thermostat | Yes |
Burner Matching Options
| Option | Availability |
|---|---|
| NG | Yes |
| LPG | Yes* |
| Pre-mix | Yes |
| Oil | Yes |
| Dual fuel | No |
* Burner matching for LPG operation by special request. Modulating and Low NOx options are available. Oil burners require confirmation of fuel supply suitability.
Suggested Engineering Specification
Overview
The Ideal Heating Evojet condensing boiler is a fully automatically controlled, floor-standing unit with a triple flue pass stainless steel heat exchanger. It is designed primarily for central heating but can also produce domestic hot water via a suitable indirect storage cylinder on a fully pumped sealed water system.
All parts in contact with combustion gases are made from titanium stabilised stainless steel for corrosion resistance. The boiler features two return water connections for flexible applications (CH & DHW) to achieve optimum efficiency.
Boilers are designed for Natural Gas, LPG, or Oil, with burner options including 2-stage, Modulating, Low NOx, and Ultra Low NOx.
Dimensions
The condensing boiler must fit within specified maximum permitted floor spaces, which vary by model output (e.g., 2.40m² for the 1250kW model).
Mounting / Positioning
The condensing boilers are floor standing.
Efficiency
Boilers achieve high seasonal efficiencies (minimum 95.8% per Part L Vol.2 2022) with low NOx emissions (43 - 65mg/kWh) when using a Low NOx Natural Gas burner.
Approvals
The manufacturer is ISO 9001 accredited.
Specification - Flow Rates
| BOILER MODEL | MIN FLOW (L/H) |
|---|---|
| 150 | 1,700 |
| 210 | 2,400 |
| 270 | 3,100 |
| 350 | 4,000 |
| 450 | 5,100 |
| 600 | 6,800 |
| 800 | 9,100 |
| 1000 | 11,400 |
| 1250 | 14,200 |
| 1450 | 16,500 |
| 1750 | 20,400 |
| 2100 | 24,500 |
| 2600 | 30,400 |
| 3000 | 35,000 |
Controls
Boiler control options must be selected at the time of purchase, including:
- Two stage burner
- Modulating burner
- BMS 0-10V
- Oil & dual fuel
The boiler must include features for set point adjustment, heating circuit control (constant/variable temperature, DHW), and safety lockout parameters with fault diagnosis. Capabilities must include frost protection, weather/room compensation, and system pump control via external components.
Flue
The condensing boilers are suitable for use with an open flued application in B23 configuration. The B23P configuration requires a premix gas burner.
Hydraulic
The condensing boiler must connect to a fully pumped sealed water system. All hydraulic connections (flow, return, condensate drain) must be on the bottom or rear. The boiler must have a maximum operating pressure of 6 bar and be suitable for heating and indirect hot water systems.
Warranty
The boiler is available with a 2 year warranty.
Note: Information is correct at time of publication. Ideal Heating reserves the right to vary specification without notice due to continuous product improvement.
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