High Efficiency Boilers

HeatMaster

HeatMaster 71

High performance fully modulating combined boiler and water heater

# 02646801

  • Gas
  • Boilers
  • Standard
  • Floor installation
  • Stainless steel Tank-in-Tank design
  • Low-NOx premix natural gas/LPG modulating burners
  • Can also be used as a stand-alone water heater
  • Anti-legionellae: Hot water stored at a consistently high temperature
  • Built-in primary shunt pump
  • Fully insulated with rigid polyurethane foam
  • Stove enameled casing
  • Control panel including digital MCBA controller complete with self diagnostic system and combined temperature and pressure gauge
  • vented or unvented use, with mains pressure Systempaks available
  • Also available in Propane.
  • SYSTÈME TANK-IN-TANK
  • GARANTIE 5 ANS (voir nos conditions de vente)

Legend

  1. Cold water inlet
  2. Automatic air vent.
  3. NTC probes Primary 1 and 2.
  4. Primary expansion vessels.
  5. Low water pressure switch.
  6. Control Thermostat.
  7. Primary circuit safety valve.
  8. Boiler charge pump.
  9. Rigid polyurethane insulation.
  10. Flue reduction collar.
  11. Turbulators.
  12. Heating circuit flow.
  13. Domestic hot water outlet
  14. Internal stainless steel tank .
  15. Stainless steel thermostat pocket with probe ECS NTC 3 .
  16. Primary circuit.
  17. Flue tubes.
  18. Heating circuit return.
  19. Drain valve.
  20. Combustion chamber.

Characteristics

Capacity (total) 239 L
Heating surface DHW tank 3,14
Capacity (domestic hot water) 131 L
Connection - DHW 1 M inches
Max operating temperature (primary) 90 °C
Max service pressure (DHW) 8,6 bar
Max service pressure heating (primary) 3 bar
Weight (empty) 310 kg

Hot water performances

Peak flow at 40°C 646 L/10’
Peak flow 1st hour at 40°C 2133 L/60’
Continuous flow at 40°C 1835 L/h
Peak flow 1st hour at 45°C 1794 L/60’
Continuous flow at 45°C 1573 L/h
Peak flow at 60°C 346 L/10’
Peak flow 1st hour at 60°C 1219 L/60’
Continuous flow at 60°C 1101 L/h
Pre-heating time from 10 to 80°C (Heat source: boiler) 24 min
Input max (heating) LCV 69,9 kW
Input max (heating) HCV 77,7 kW
Output power max (80/60°C) 62,9 kW
Output power min (80/60°C) 18,4 kW
Efficiency at 30% load (EN677) 96,7 %
Connection - heating 6/4 F Ø inches
Connection - gas 3/4 F Ø inches
Water pressure drop boiler at Δt = 20°C 46 mbar
Gas flow rate (max output) 7,4 m³/h
Gas flow rate G25 (max output) 8,6 m³/h
Chimney connection 150 Ø mm
Operating voltage 230 V
Protection IP 30
Electrical consumption 220 W
NOx emissions max output 75 mg/kWh
Capacity expansion tank(s) 2 x 10 L
Dim. - Depth (w/o conn.) 930 mm
Dim. - Height (w/o conn.) 1753 mm
Dim. - Width or Diameter (w/o conn.) 680 mm
Dim. - Depth (with conn.) 960 mm
Dim. - Height (with conn.) 1728 mm
Dim. - Width or Diameter (with conn.) 680 mm

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