Portrait

HeatMaster 25 C Evo

Combined gas fired condensing boiler and water heater with stainless steel heat exchanger

  • 5 -Year Warranty
  • Tank-in-Tank
  • Nat Gas and LPG
Short Energy Label Heating
Short Energy Label DHW
  • label_energy_GAS
  • Boilers
  • DHW Production
  • Standard
  • Concentric
  • Floor installation
# GTIN : 5400891528228
# P/N : XB550000
  • Heating and hot water from one unit saves space, reduces energy use and speeds up installation
  • Operates in most efficient mode (condensing) for heating
  • Low maintenance with no anode protection required
  • Easy to use standardised controls using ACVMax control system
  • Low NOx levels – this model qualifies for 1 credit under BREEAM New Construction 2018 (<24mg/kWhr)
  • Suited to smaller premises and lower flow rate requirements (smaller DHW tank than 25TC)
  • Corrosion-resistant stainless steel heat exchanger and tank reduces maintenance and increases system lifespan
  • Suitable for unvented systems – supplied with Systempak 1 including 3.5 bar mains unvented kit and DHW mixing valve
  • Supplied with LPG kit for on-site conversion
  • Reduces legionella risk due to temperature stored at > 60°C
  • Improved access for service and maintenance
  • Supplied with factory fitted T&P relief valve
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. DHW inlet tube
  7. Insulation
  8. Condensate recovery dish + NTC5 sensor (flue gas)
  9. Drain valve
  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

Constructive characteristics

HeatMaster 25 C Evo
Capacity (total) L 200 L
Capacity (primary) L 120 L
Capacity (domestic hot water) L 80 L
Capacity expansion tank(s) L - L
Chimney: Max pressure drop in flue pipe Pa 130 Pa
Chimney: max length of concentric flue pipe m 60 m
Chimney connection Ømm 80/125 Ømm
Connection - heating Ø" 1 F Ø"
Connection - DHW Ø" 1 M Ø"
Connection gas Ø" 3/4 M Ø"
Connection - safety valve Ø" 1/2 M Ø"
Max operating temperature °C 87 °C
Water pressure drop boiler at Δt = 20°C mbar 3 mbar
Max service pressure heating (primary) bar 3 bar
Max service pressure (DHW) bar 8,6 bar
Height when tilted mm 1872 mm
Weight (empty) kg 174 kg

Heating characteristics

HeatMaster 25 C Evo
Pre-heating time from 10 to 80°C (Heat source: boiler) min 27 min
Heating time from 10 to 90°C min 40 min

Combustion

HeatMaster 25 C Evo
Input max (heating) HCV kW 27,8 kW
Input max (heating) LCV kW 25,0 kW
Combustion efficiency % 97,5 %
Efficiency at 30% load (EN15502-1) % 109,0 %
Efficiency at 100% load (50/30°C) % 103,9 %
Efficiency (max output) 80/60°C % 98 %
Efficiency (min output) 80/60°C % 98 %
Efficiency DHW mode ΔT 30K % 99,2 %
CO emissions max output ppm 27 ppm
CO emissions min output ppm 6 ppm
Mass rate of combustion products (gas) kg/h 42 kg/h
NOx weighted (GCV) (EN15502) mg/kWh 26,3 mg/kWh
NOx class (EN15502) 6
Nominal power DHW kW 25 kW
Output power max (80/60°C) kW 24,3 kW
Output power min (80/60°C) kW 4,9 kW
Gas flow rate (min output) m³/h 0,5 m³/h

Domestic hot water performance

HeatMaster 25 C Evo
Peak flow at 40°C L/10’ 233,5 L/10’
Peak flow 1st hour at 40°C L/60’ 748 L/60’
Continuous flow at 40°C L/h 617 L/h
Peak flow at 60°C L/10’ 145 L/10’
Peak flow 1st hour at 60°C L/60’ 478 L/60’
Continuous flow at 60°C L/h 400 L/h

Electrical Characteristics

HeatMaster 25 C Evo
Voltage V 230 V
Frequency Hz 50 Hz
Protection IP 20
Electrical consumption W 95 W
Electrical power requirements A 0,8 A

Eco Design Fields

HeatMaster 25 C Evo
Space heating energy efficiency class A
Seasonal space heating efficiency (35°C) % 93 %
Declared load profile XXL
Water heating energy efficiency class B
Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3) % 74 %
Sound power level indoors LWA dB 60 dB
Energy Label EU
Product Fiche

Technical brochure

ACVMax Touch - Installer's handboek for EVO appliances (2022 ->)

8.83MB – en

Addendum conversion to propane HM 25 C Evo

1.59MB

Evo Range Gas Conversion Procedure

2.28MB – fr en pl it de es ru

HeatMaster 25 C Evo : Installation, operation and maintenance instructions

10.79MB – en

HeatMaster 25 C Evo Data Sheet

267.08kB – en

Technico-commercial manual - HeatMaster TC EVO - WaterMaster EVO (X)

4.91MB

Ecodesign

Energy Label EU

Product Fiche

BIM Files

BIM Files

Pictures

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