Condensing Boilers

HeatMaster C, TC

HeatMaster 35 TC

Heating and hot water production from one combination unit

# 05652201

  • 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. NTC Sensor (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) 196 L
Heating surface DHW tank 2,2 + 0,6
Coil capacity 0 L
Capacity (domestic hot water) 96 L
Connection - DHW 1 M inches
Max operating temperature 87 °C
Max service pressure (DHW) 8,6 bar
Max service pressure heating (primary) 3 bar
Weight (empty) 177 kg

Hot water performances

Peak flow at 40°C 408 L/10’
Peak flow 1st hour at 40°C 1328 L/60’
Continuous flow at 40°C 1104 L/h
Peak flow 1st hour at 45°C 1127 L/60’
Continuous flow at 45°C 946 L/h
Peak flow at 60°C 197 L/10’
Peak flow 1st hour at 60°C 749 L/60’
Continuous flow at 60°C 662 L/h
Pre-heating time from 10 to 80°C (Heat source: boiler) 26 min
Input max (heating) LCV 35 kW
Input max (heating) HCV 38,9 kW
Output power max (80/60°C) 34,2 kW
Output power min (80/60°C) 6,8 kW
Efficiency at 30% load (EN677) 109 %
Connection - heating 1 F Ø inches
Connection gas 3/4 M Ø inches
Water pressure drop boiler at Δt = 20°C 6 mbar
Gas flow rate (max output) 3,64 m³/h
Gas flow rate G25 (max output) 4,23 m³/h
Chimney connection 80/125 Ø mm
Voltage 230 V
Protection IP 30
Electrical consumption 110 W
NOx emissions max output 55 mg/kWh
Capacity expansion tank(s) - L
Dim. - Depth (w/o conn.) 708 mm
Dim. - Height (w/o conn.) 1755 mm
Dim. - Width or Diameter (w/o conn.) 600 mm
Dim. - Depth (with conn.) 740 mm
Dim. - Height (with conn.) 1755 mm
Dim. - Width or Diameter (with conn.) 600 mm

Other products

HeatMaster 70 TC
Condensing Boilers

Gas fired Condensing combined boiler and water heater

HeatMaster 25 TC
Condensing Boilers

Heating and hot water production from one combination unit

HeatMaster 120 TC
Condensing Boilers

Heating and hot water production from one combination unit

HeatMaster 25 C
Condensing Boilers

Gas fired condensing combined boiler and high output water heater

Find an installer

Get in touch with an installer for a free, no obligation estimate.

Call ACV

Need some answers? Talk to a specialist

Tel. +44 (0)1383 820100