Important coronavirus notice: Click here

Water Heaters

WaterMaster

WaterMaster 85

Direct gas fired water heater

  • 10-Year Heat Exchanger Warranty
  • Tank-in-Tank
  • Nat Gas and LPG
  • Domestic and Commercial

# GTIN : 5400891032367
# P/N : A1002078

  • Gas
  • Hot Water Heater
  • Standard
  • Concentric
  • Floor installation
  • Can deliver large peak and continuous volumes of hot water
  • Operates in most efficient mode (condensing)
  • Reduces legionella risk due to temperature stored at > 60°C
  • Small footprint allows installation in tight plantrooms
  • Low maintenance with no anode protection required
  • Long life – 25-year guarantee on the corrosion-resistant stainless steel cylinder
  • Compliant with latest Ecodesign regulations for DHW
  • Corrosion-resistant stainless steel heat exchanger backed by a 10-year warranty reduces maintenance and increases system lifespan
  • Suitable for vented or unvented systems (optional unvented kit required)
  • Easy to use standardised controls using ACVMax control system
  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 1 ½ 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 14 mbar
Max service pressure heating (primary) 3 bar
Max service pressure (DHW) 8,6 bar
Height when tilted 2277 mm
Weight (empty) 298 kg

Heating characteristics

Pre-heating time from 10 to 80°C (Heat source: boiler) 24 min
Reheat time from 40 to 90°C 36 min
Reheat time from 40 to 80°C 16 min
Heating time from 10 to 90°C 43 min

Combustion

Input max (heating) HCV 95,4 kW
Input max (heating) LCV 85,9 kW
Combustion efficiency 98 %
Efficiency DHW mode ΔT 30K 103,9 %
Efficiency DHW mode (EN89) 107,7 %
CO emissions max output 75 ppm
CO emissions min output 6 ppm
Mass rate of combustion products (gas) 111 kg/h
NOx weighted (GCV) (EN15502) 27,0 mg/kWh
NOx class (EN15502) 6
Gas flow rate (min output) 2,6 m³/h

Domestic hot water performance

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 at 45°C 646 L/10’
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

Electrical Characteristics

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

    • ACVMax - Installers handbook for heating systems controlled with ACVMax (3.06-3.16)

    • 20.46 MB – en

    • Technical brochure

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

    • 10.09 MB – en

    • Technical brochure

    • ACVMax - Installers handbook for heating systems controlled with ACVMax (Software version 4.04 or more)

    • 24.77 MB – en

    • Marketing brochure

    • WaterMaster - EN 89 Certified Storage Water Heater

    • 676 KB – en

    • Marketing brochure

    • Product Guide 2019-20

    • 12.41 MB – en

Eco Design Fields

Declared load profile XXL
Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3) 85 %
Sound power level indoors LWA 61 dB
    • Product Fiche

    • WaterMaster 85

Other products

WaterMaster 25
Water Heaters
WaterMaster 45
Water Heaters
WaterMaster 35
Water Heaters
WaterMaster 70
Water Heaters
Call ACV

Need some answers? Talk to a specialist

Tel. +44 (0)1383 820100