Condensing Boilers

HeatMaster C, TC

HeatMaster 85 TC

Heating and hot water production from one combination unit

# 05652501

  • Gas
  • Boilers
  • Standard
  • Concentric
  • Floor installation
  • Equipped with the ACVMax Control system.
  • Stainless steel self-cleaning heat exchanger.
  • Total Condensing unit - condenses in both heating and hot water mode.
  • Can provide heating and hot water or as a stand alone hot water generator.
  • Can deliver exceptional peak and continuous volumes of hot water.
  • Stainless Steel domestic hot water tank.
  • Small footprint - Heating and hot water from one unit reduces plantroom space requirements.
  • Floor standing boiler with large volumes of primary water, ideal for existing heating systems.
  • Multiple units can be linked together for larger applications or back up.
  • Can be installed along with our Prestige heat only boilers or Smartline cylinders to provide a perfect solution to your heating and hot water requirements.
  • A rated integral charging pump
  • Vented or unvented use - Mains systempak available.
  • Supplied with LPG kit for east on-site conversion
  • Tank-in-Tank Technology
  • Also available in 70-85-120kW.


  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. Condensate recovery dish
  9. High efficiency circulator pump
  10. Pressure sensor
  11. Heating circuit
  12. Electrical panel (with spare fuses at the back)
  13. ACVMax Control panel
  14. DHW tank dry well (Sparge tube with temperature sensor)
  15. Automatic air vent
  16. Gas pipe
  17. Gas valve
  18. Connection for DHW safety valve (to be installed)
  19. Modulating air/gas premix burner with fan
  20. Air inlet


Capacity (total) 315 L
Heating surface DHW tank 3,4 + 0,9
Capacity (domestic hot water) 190 L
Connection - DHW 1 M inches
Max operating temperature (primary) 87 °C
Max service pressure (DHW) 8,6 bar
Max service pressure heating (primary) 3 bar
Weight (empty) 298 kg

Hot water performances

Peak flow at 40°C 783 L/10’
Peak flow 1st hour at 40°C 2895 L/60’
Continuous flow at 40°C 2534 L/h
Peak flow 1st hour at 45°C 2456 L/60’
Continuous flow at 45°C 2172 L/h
Peak flow at 60°C 371 L/10’
Peak flow 1st hour at 60°C 1638 L/60’
Continuous flow at 60°C 1520 L/h
Pre-heating time from 10 to 80°C (Heat source: boiler) 24 min
Input max (heating) LCV 85 kW
Input max (heating) HCV 94,4 kW
Output power max (80/60°C) 82,5 kW
Output power min (80/60°C) 20,5 kW
Efficiency at 30% load (EN677) 108 %
Connection - heating 6/4 F Ø inches
Connection - gas 3/4 M Ø inches
Water pressure drop boiler at Δt = 20°C 14 mbar
Gas flow rate (max output) 8,6 m³/h
Gas flow rate G25 (max output) 10 m³/h
Chimney connection 100/150 Ø mm
Voltage 230 V
Protection IP 30
Electrical consumption 266 W
NOx emissions max output 48 mg/kWh
Dim. - Depth (w/o conn.) 753 mm
Dim. - Height (w/o conn.) 2170 mm
Dim. - Width or Diameter (w/o conn.) 690 mm
Dim. - Depth (with conn.) 790 mm
Dim. - Height (with conn.) 2170 mm
Dim. - Width or Diameter (with conn.) 690 mm

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