Water Heaters

WaterMaster

WaterMaster 70

Condensing domestic hot water heater

  • Available in Natural gas and LPG
  • TANK-IN-TANK TECHNOLOGY

# A1002077

  • Gas
  • Hot Water Heater
  • Standard
  • Concentric
  • Floor installation
  • Certified EN89 - Ecodesign Lot 2 (EN 812/2013 - EN 814/2013)
  • Equipped with ACVMax burner and modbus controls
  • Condenses in hot water mode
  • Delivers an exceptional peak and continuous volume of hot water
  • Stainless Steel domestic hot water tank - no anode protection required
  • Space saving footprint - reduced plant-room space requirement
  • Stainless steel heat exchanger reduces maintenance and increases system lifespan
  • Multiple units can be grouped in cascade for larger applications or back up
  1. ACVMax Control panel
  2. NTC sensor (primary circuit)
  3. High efficiency circulator pump
  4. Condensate recovery dish
  5. Electrical panel (with spare fuses at the back)
  6. “Tank-in-Tank” hot water production tank
  7. Flue gas exhaust tube
  8. Indirect water pre-heater
  9. Primary circuit
  10. Pressure sensor

Constructive characteristics

Capacity (total) 315 L
Capacity (primary) 125 L
Capacity (domestic hot water) 190 L
Chimney: Max pressure drop in flue pipe 150 Pa
Chimney: max length of concentric flue pipe 22 m
Chimney connection 100/150 Ømm
Connection - heating 6/4 F Ø"
Connection - DHW 1 M Ø"
Connection gas 3/4 M Ø"
Connection - safety valve 1/2 M Ø"
Max operating temperature 87 °C
Water pressure drop boiler at Δt = 20°C 9 mbar
Max service pressure heating (primary) 3 bar
Max service pressure (DHW) 8,6 bar
Pressure drop (primary - ΔT10K) 9,3 mbar
Height when tilted 2277 mm
Weight (empty) 298 kg

Heating characteristics

Pre-heating time from 10 to 80°C (Heat source: boiler) 27 min
Reheat time from 40 to 90°C 37 min
Reheat time from 40 to 80°C 18 min
Heating time from 10 to 90°C 47 min

Combustion

Input max (heating) HCV 77,7 kW
Input max (heating) LCV 69,9 kW
Combustion efficiency 98,1 %
Efficiency DHW mode ΔT 30K 103,9 %
Efficiency DHW mode (EN89) 107,7 %
CO emissions max output 56 ppm
CO emissions min output 2 ppm
Mass rate of combustion products (gas) 114 kg/h
NOx class (EN483) 5
Gas flow rate (min output) 2,6 m³/h

Eco Design Fields

NOx weighted (GCV) 30,3 mg/kWh

Domestic hot water performance

Peak flow at 40°C 716 L/10’
Peak flow 1st hour at 40°C 2455 L/60’
Continuous flow at 40°C 2087 L/h
Peak flow at 45°C 592 L/10’
Peak flow 1st hour at 45°C 2083 L/60’
Continuous flow at 45°C 1789 L/h
Peak flow at 60°C 348 L/10’
Peak flow 1st hour at 60°C 1391 L/60’
Continuous flow at 60°C 1252 L/h

Electrical Characteristics

Voltage 230 V
Frequency 50 Hz
Protection IP 30
Electrical consumption 220 W
Electrical power requirements 1 A
    • Technical brochure

    • ACVMax - Installers handbook for heating systems controlled with ACVMax

    • 25.55 MB – en

    • Technical brochure

    • WaterMaster 25 / 35 / 45 / 70 / 85 / 120 - Installation, Operation and Maintenance Instructions for the Installer and the User

    • 14.41 MB – en

    • Technical brochure

    • WaterMaster 25 / 35 / 45 / 70 / 85 / 120 - Инструкция по установке, эксплуатации и сервисному oбслуживанию, для пользователя и сервисного специалиста

    • 13.10 MB – ru

    • Marketing brochure

    • WaterMaster - EN 89 Certified Storage Water Heater

    • 676 KB – en

Eco Design Fields

Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3) 85 %
Declared load profile XXL
Water heating energy efficiency class A
Sound power level indoors LWA 60 dB
    • Energy Label

    • WaterMaster 70

    • Product Fiche

    • WaterMaster 70

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