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WaterMaster 25 X Evo

Condensing domestic hot water heater

Available in Natural gas and LPG
TANK-IN-TANK TECHNOLOGY
Also available in 70-85-120kW.

label_energy_GAS
Hot Water Heater
Standard
Concentric
Floor installation

# GTIN : 5400891527924

# P/N : 052792

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

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 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 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

DHW recirculation tube

Constructive characteristics
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Capacity (total)	L	400	400	505	L
Capacity (primary)	L	180	180	205	L
Capacity (domestic hot water)	L	220	220	300	L
Chimney: Max pressure drop in flue pipe	Pa	130	130	110	Pa
Chimney: max length of concentric flue pipe	m	20	20	20	m
Chimney connection	Ømm	80/125	80/125	100/150	Ømm
Connection - heating	Ø"	1 F	1 F	1 ½ F	Ø"
Connection - DHW	Ø"	6/4 M	6/4 M	1 ½ M	Ø"
Connection gas	Ø"	3/4 M	3/4 M	3/4 M	Ø"
Connection - safety valve	Ø"	1/2M	1/2M	1/2 M	Ø"
Max operating temperature	°C	87	87	87	°C
Water pressure drop boiler at Δt = 20°C	mbar	3	10	-	mbar
Max service pressure heating (primary)	bar	3	3	3	bar
Max service pressure (DHW)	bar	8,6	8,6	8,6	bar
Height when tilted	mm	1980	1980	2376	mm
Weight (empty)	kg	270	270	380	kg
Heating characteristics
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Pre-heating time from 10 to 80°C (Heat source: boiler)	min	61	40	43	min
Reheat time from 40 to 90°C	min	68	35	40	min
Reheat time from 40 to 80°C	min	46	26	31	min
Heating time from 10 to 90°C	min	83	49	52	min
Combustion
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Input max (heating) HCV	kW	27,8	50,6	77,6	kW
Input max (heating) LCV	kW	25,0	45,0	69,9	kW
Combustion efficiency	%	98,2	97,9	98,1	%
Efficiency DHW mode ΔT 30K	%	105,4	103,1	103,9	%
Efficiency DHW mode (EN89)	%	108,7	108,9	107,9	%
CO emissions max output	ppm	27	63	56	ppm
CO emissions min output	ppm	6	4	2	ppm
Mass rate of combustion products (gas)	kg/h	42	76	114	kg/h
NOx weighted (GCV) (EN15502)	mg/kWh	21,5	30,2	30,3	mg/kWh
NOx class (EN15502)		6	6	6
Gas flow rate (min output)	m³/h	0,5	0,9	2,6	m³/h
Domestic hot water performance
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Peak flow at 40°C	L/10’	568	617	951	L/10’
Peak flow 1st hour at 40°C	L/60’	1207	1793	2578	L/60’
Continuous flow at 40°C	L/h	788	1390	2087	L/h
Peak flow at 45°C	L/10’	477	501	816	L/10’
Peak flow 1st hour at 45°C	L/60’	1035	1537	2210	L/60’
Continuous flow at 45°C	L/h	676	1192	1789	L/h
Peak flow at 60°C	L/10’	327	332	571	L/10’
Peak flow 1st hour at 60°C	L/60’	724	1076	1547	L/60’
Continuous flow at 60°C	L/h	473	820	1252	L/h
Electrical Characteristics
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Voltage	V	230	230	230	V
Frequency	Hz	50	50	50	Hz
Protection IP		20	20	20
Electrical consumption	W	95	126	280	W
Electrical power requirements	A	0,7	0,85	1	A
Eco Design Fields
		WaterMaster 25 X Evo	WaterMaster 45 X Evo	WaterMaster 70 X Evo
Declared load profile		XXL	XXL	XXL
Water heating energy efficiency class		A	A	A
Water heating energy efficiency [ηwh] (EU 814/2013 Art 2 (15) Ann.IV-3)	%	87,5	87,9	85	%
Sound power level indoors LWA	dB	60	59	60	dB
Energy Label
Product Fiche

Technical brochure
ACVMax Touch - Installer's handboek for EVO appliances (2022 ->)	8.77MB – 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 25-35-45-70-85-120-25X-45X-70X Evo : Инструкции по монтажу, эксплуатации и техническому обслуживанию	10.23MB – ru
Ecodesign
Energy Label
Product Fiche
BIM Files
BIM Files