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WaterMaster 70 Evo

Direct gas fired condensing water heater

5-Year Warranty
Tank-in-Tank technology
Nat Gas and LPG

label_energy_GAS
Hot Water Heater
Standard
Concentric
Floor installation

# GTIN : 5400891528198

# P/N : XB660004

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Can deliver large peak and continuous volumes of hot water
Operates in most efficient mode (fully condensing)
Reduces legionella risk due to temperature stored at >60°C
Low NOx levels
Small footprint allows installation in tight plantrooms
Low maintenance with no anode protection required
Compliant with latest Ecodesign regulations for DHW
Corrosion-resistant stainless steel heat exchanger and tank 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
Supplied with LPG kit for simple on-site conversion
Improved access for service and maintenance
Supplied with factory fitted T&P relief valve for ease of installation

Schematic — Concentric flue gas/air inlet box

Flue gas exhaust tube

Combustion chamber

Stainless steel heat exchanger

Stainless steel “Tank-in-Tank” hot water production tank (primary + DHW)

Primary circuit separation disc

Indirect water pre-heater

Insulation

Condensate recovery dish + NTC5 sensor (flue gas)

High efficiency circulator pump

NTC2 sensor (Primary return)

Electrical panel (with spare fuses at the back)

ACVMax Touch Control panel

On-Off switch

DHW tank dry well (Dip tube with temperature sensor)

Automatic air vent

Gas pressure switch and gas pipe

NTC1 sensor (Primary supply)

Gas valve

DHW safety valve / (T & P relief valve - UK only)

Modulating air/gas premix burner with fan

Air inlet

DHW outlet

Constructive characteristics
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Capacity (total)	L	315	315	315	L
Capacity (primary)	L	125	125	125	L
Capacity (domestic hot water)	L	190	190	190	L
Chimney: Max pressure drop in flue pipe	Pa	150	150	170	Pa
Chimney: max length of concentric flue pipe	m	22	22	21	m
Chimney connection	Ømm	100/150	100/150	100/150	Ømm
Connection - heating	Ø"	1 ½ F	1 ½ F	1 ½ F	Ø"
Connection - DHW	Ø"	1 M	1 M	1 M	Ø"
Connection gas	Ø"	3/4 M	3/4 M	3/4 M	Ø"
Connection - safety valve	Ø"	1/2 M	1/2 M	1/2 M	Ø"
Max operating temperature	°C	87	87	87	°C
Water pressure drop boiler at Δt = 20°C	mbar	9	14	27	mbar
Max service pressure heating (primary)	bar	3	3	3	bar
Max service pressure (DHW)	bar	8,6	8,6	8,6	bar
Pressure drop (primary - ΔT10K)	mbar	9,3	-	-	mbar
Height when tilted	mm	2270	2270	2270	mm
Weight (empty)	kg	298	298	299	kg
Heating characteristics
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Pre-heating time from 10 to 80°C (Heat source: boiler)	min	27	24	23	min
Reheat time from 40 to 90°C	min	37	36	30	min
Reheat time from 40 to 80°C	min	18	16	15	min
Heating time from 10 to 90°C	min	47	43	38	min
Combustion
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Input max (heating) HCV	kW	77,6	95,3	127,7	kW
Input max (heating) LCV	kW	69,9	85,0	115,0	kW
Combustion efficiency	%	98,1	98	97,5	%
Efficiency DHW mode ΔT 30K	%	103,9	103,9	102,2	%
Efficiency DHW mode (EN89)	%	107,7	107,7	107,7	%
CO emissions max output	ppm	56	75	50	ppm
CO emissions min output	ppm	2	6	8	ppm
Mass rate of combustion products (gas)	kg/h	114	111	183	kg/h
NOx weighted (GCV) (EN15502)	mg/kWh	30,3	27,0	37,4	mg/kWh
NOx class (EN15502)		6	6	6
Gas flow rate (min output)	m³/h	2,6	2,6	2,5	m³/h
Domestic hot water performance
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Peak flow at 40°C	L/10’	716	783	900	L/10’
Peak flow 1st hour at 40°C	L/60’	2455	2895	3620	L/60’
Continuous flow at 40°C	L/h	2087	2534	3402	L/h
Peak flow at 45°C	L/10’	592	646	676	L/10’
Peak flow 1st hour at 45°C	L/60’	2083	2456	3098	L/60’
Continuous flow at 45°C	L/h	1789	2172	2928	L/h
Peak flow at 60°C	L/10’	348	371	440	L/10’
Peak flow 1st hour at 60°C	L/60’	1391	1638	1847	L/60’
Continuous flow at 60°C	L/h	1252	1520	1754	L/h
Electrical Characteristics
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Voltage	V	230	230	230	V
Frequency	Hz	50	50	50	Hz
Protection IP		20	20	20
Electrical consumption	W	220	230	380	W
Electrical power requirements	A	1	1	1,7	A
Eco Design Fields
		WaterMaster 70 Evo	WaterMaster 85 Evo	WaterMaster 120 Evo
Declared load profile		XXL	XXL	XXL
Water heating energy efficiency class		A	A	-
Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3)	%	85	85	85	%
Sound power level indoors LWA	dB	60	61	62	dB
Energy Label EU			-	-
Product Fiche

Technical brochure
ACVMax Touch - Installer's handboek for EVO appliances (2022 ->)	8.83MB – en
Evo Range Gas Conversion Procedure	2.28MB – fr en pl it de es ru
Filling kit 788498 for WaterMaster (multilanguage version)	485.99kB – fr en nl pl it de es ru
Technico-commercial manual - HeatMaster TC EVO - WaterMaster EVO (X)	4.91MB
WaterMaster 25-35-45-70-85-120-25X-45X-70X Evo : Installation, operation and maintenance instructions	10.07MB – en
WaterMaster 70 Evo Data Sheet	262.26kB – en
Ecodesign
Energy Label EU
Product Fiche
BIM Files
BIM Files