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HeatMaster 25 Evo 2

Commercial Combi Boiler

  • Commercial combi boiler combining all the benefits of domestic combi boiler technology while comfortably meeting peak commercial DHW demands.
  • Tank-in-tank technology
  • Nat Gas and LPG
  • 5-Year Warranty
Short Energy Label Heating
Short Energy Label DHW
  • label_energy_GAS
  • Boilers
  • DHW Production
  • Standard
  • Concentric
  • Floor installation
# GTIN : 5400891542521
# P/N : 554252
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Label 2
Label 3
  • Commercial combi boiler combining all the benefits of domestic combi boiler technology while comfortably meeting peak commercial DHW demands.
  • Space and time saving solution due to not needing to install separate boiler and hot water cylinders.
  • ErP Class A, NOx levels significantly under 40 mg/kWh and operating efficiencies well above the minimum requirements of Part L (2022) ensure an energy efficient installation.
  • Internal time clock offers the capability to set up to 6 programmes within a 24 hour period to ensure that fuel usage is managed as efficiently as possible.
  • Multiple controls options - On/Off, 0-10V power OR temperature control, BMS communication via Modbus.
  • Corrosion-resistant stainless steel heat exchanger and tank reduces maintenance and increases system lifespan
  • Suited to high demand and critical hot water premises such as hotels and hospitals
  • Operates in most efficient mode (condensing) for both heating and hot water
  • Integrated legionella protection
  • Supplied with LPG kit for simple on-site conversion
  • BIM & CAD objects available
Schematic
  1. Concentric flue gas/air inlet box
  2. Flue gas exhaust tube
  3. Combustion chamber
  4. Stainless steel heat exchanger
  5. Stainless steel “Tank-in-Tank” hot water production tank
  6. Primary circuit separation disc
  7. Indirect water pre-heater
  8. Insulation
  9. Condensate recovery dish + NTC5 sensor (flue gas)
  10. High efficiency circulator pump
  11. NTC2 sensor (CH return)
  12. Electrical panel (with spare fuses at the back)
  13. ACVMax Touch Control panel
  14. On-Off switch
  15. DHW tank dry well (Dip tube with temperature sensor)
  16. Automatic air vent
  17. Gas pipe
  18. NTC1 sensor (CH supply)
  19. Gas valve
  20. DHW safety valve / (T&P relief valve - UK only)
  21. Modulating air/gas premix burner with fan
  22. Air inlet
  23. DHW outlet
  24. DHW recirculation tube

Constructive characteristics
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Capacity (total) L 196 196 196 L
Capacity (primary) L 100 100 100 L
Capacity (domestic hot water) L 96 96 96 L
Chimney: Max pressure drop in flue pipe Pa 130 130 130 Pa
Chimney: max length of concentric flue pipe m 20 20 20 m
Chimney connection Ømm 80/125 80/125 80/125 Ømm
Connection - heating Ø" 1 F 1 F 1 F Ø"
Connection - DHW Ø" 1 M 1 M 1 M Ø"
Connection gas Ø" 3/4 M 3/4 M 3/4 M Ø"
Connection - re-circulation / safety valve Ø" na / 1 F na / 1 F na / 1 F Ø"
Connection - safety valve Ø" 1/2M 1/2M 1/2M Ø"
Max operating temperature °C 87 87 87 °C
Water pressure drop boiler at Δt = 20°C mbar 3 6 10 mbar
Max service pressure heating (primary) bar 3 3 3 bar
Max service pressure (DHW) bar 8,6 8,6 8,6 bar
Height when tilted mm 1880 1880 1880 mm
Weight (empty) kg 177 177 177 kg

Heating characteristics
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Pre-heating time from 10 to 80°C (Heat source: boiler) min 35 26 23 min
Reheat time from 40 to 90°C min 30 28 25 min
Reheat time from 40 to 80°C min 22 22 16 min
Heating time from 10 to 90°C min 43 33 30 min

Combustion
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Input max (heating) HCV kW 27.8 38.7 50.6 kW
Input max (heating) LCV kW 25 35 45 kW
Combustion efficiency % 98.2 98.2 97.9 %
Efficiency at 30% load (EN15502-1) % 109,0 109,0 109,0 %
Efficiency at 100% load (50/30°C) % 103,9 103,9 103,9 %
Efficiency (max output) 80/60°C % 98 98 98 %
Efficiency (min output) 80/60°C % 98 98 98 %
Efficiency DHW mode ΔT 30K % 105.4 105.4 103.1 %
CO emissions max output ppm 27 48 63 ppm
CO emissions min output ppm 6 4 4 ppm
Mass rate of combustion products (gas) kg/h 42 57 75 kg/h
NOx weighted (GCV) (EN15502) mg/kWh 24.6 29.5 33.2 mg/kWh
NOx class (EN15502) 6 6 6
Output power max (80/60°C) kW 24.3 34.1 44.1 kW
Output power min (80/60°C) kW 4.9 6.8 8.8 kW
Gas flow rate (min output) m³/h 0.52 0.73 0.93 m³/h

Domestic hot water performance
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Peak flow at 40°C L/10’ 361 408 451 L/10’
Peak flow 1st hour at 40°C L/60’ 1018 1328 1610 L/60’
Continuous flow at 40°C L/h 788 1104 1390 L/h
Peak flow at 45°C L/10’ 301 339 373 L/10’
Peak flow 1st hour at 45°C L/60’ 865 1127 1366 L/60’
Continuous flow at 45°C L/h 676 946 1192 L/h
Peak flow at 60°C L/10’ 183 197 224 L/10’
Peak flow 1st hour at 60°C L/60’ 577 749 894 L/60’
Continuous flow at 60°C L/h 473 662 820 L/h

Electrical Characteristics
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Voltage V 230 230 230 V
Frequency Hz 50 50 50 Hz
Protection IP 20 20 20
Electrical consumption W 101 111 126 W
Electrical power requirements A 0.7 0.8 0.85 A

Eco Design Fields
HeatMaster 25 Evo 2 HeatMaster 35 Evo 2 HeatMaster 45 Evo 2
Space heating energy efficiency class A A A
Seasonal space heating efficiency (35°C) % 93 93 93 %
Declared load profile XXL XXL XXL
Water heating energy efficiency class A A A
Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3) % 93.2 93.2 93.1 %
Sound power level indoors LWA dB 60 60 59 dB
Energy Label EU

Technical brochure

ACV HeatMaster 25 Evo 2 Data Sheet

547.16kB – en

Evo Range Gas Conversion Procedure

2.28MB – fr en pl it de es ru

HeatMaster Evo 2 Manual

8.73MB – en

HeatMaster Evo 2 Product & Flue Guide

8.17MB – en

Installer’s Handbook for Evo 2 Appliances

9.30MB – en

Ecodesign

Energy Label EU

BIM Files

BIM

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