ecoFIT pure system

The cupboard-size system boiler for any home

High performance build, smart controls and efficiency
Compact enough to fit in a kitchen cupboard
Hand-built in our award-winning Derbyshire manufacturing plant
Quiet Mark certified, meaning it’s the quietest product in its category*
Guarantee up to 10 years available when you book a Vaillant Advance installer**

Overview

If space is at a premium in your home, the cupboard-size ecoFIT pure system boiler is the choice for you. It’s designed to be flexible, with a rear flue option available to give you more choice where you put it.

*Excludes 15kW and 30kW models

**2 years out the box guarantee. 10 year free extended Advance guarantee available when fitted with an Advance boiler protection kit.

General information

But being lightweight and compact, doesn’t mean you have to compromise on comfort. The ecoFIT pure’s powerful aluminum heat exchanger which offers outstanding performance and low energy consumption for any home.

It’s smart, too. When you don’t need as much heat, it will reduce itself to just 20% of its maximum output – meaning greater energy efficiency and lower bills for you.

And because it works with vSMART™, you can control your low-cost, climate-friendly heating via the internet.

Free 2 year out the box guarantee. Upgrade to 10 year free extended guarantee when registered through Vaillant Advance with an Advance boiler protection kit.

Vital statistics

Useful videos

Specifications

Technical data	Unit of measure	ecoFIT pure 612	ecoFIT pure 615	ecoFIT pure 618	ecoFIT pure 625	ecoFIT pure 630
Boiler type		system	system	system	system	system
Signature model output		12kW	15kW	18kW	25kW	30kW
Article number		0010020395	0010020396	0010020397	0010020398	0010020399
Gas Council number		41-694-03	41-694-04	41-694-05	41-694-06	41-694-07
Boiler dimensions	mm	700 x 390 x 295	700 x 390 x 295	700 x 390 x 295	700 x 390 x 295	700 x 390 x 295
Heating
Nominal heat output range at 50/30˚C (Condensing mode)	kW	4.7 - 12.8	4.7 - 15.9	5.2 - 19.1	6.4 - 26.5	7.5 - 31.8
Nominal heat output range at 80/60˚C (Non condensing mode)	kW	4.5 - 12.3	4.5 - 15.2	5 - 18.3	6.1 - 25.4	7.2 - 30.5
Maximum flow temperature	˚C	80	80	80	80	80
Flow temperature range	˚C	10 - 80	10 - 80	10 - 80	10 - 80	10 - 80
Flow temperature factory setting	˚C	75	75	75	75	75
Approximate condensate volume at 50/30˚C	litres/hr	1.23	1.53	1.84	2.55	3.06
Modulation (max/min)	1 : X	1:3.3	1:4	1:5	1:4.9	1:4.9
Domestic Hot Water
Maximum heat output for water generation	kW	15	18	25.2	30	35
Lowest water pressure to operate boiler	bar	0.3	0.3	0.3	0.3	0.3
Lowest water flow for operation	l/min	-	-	-	-	-
Lowest water pressure for maximum flow rate	bar	-	-	-	-	-
Domestic hot water flow rate (at DT = Δ35K) *	l/min	-	-	-	-	-
Hot water output temperature range	˚C	-	-	-	-	-
Mechanical
Expansion vessel size	litres	8	8	8	8	8
Gas inlet connection (pipe size)	mm	15	15	15	15	15
Heating flow and return connections (pipe size)	mm	22	22	22	22	22
Hot and cold water connections (pipe size)	mm	-	-	-	-	-
Heat exchanger material	Stainless/Aluminium	Aluminium	Aluminium	Aluminium	Aluminium	Aluminium
Boiler lift weight (Dry boiler)	kg	31	31	31	32	32
Performance
NOx class		5	5	5	5	5
NOx (En 15502-2-1)	mg/kWh	32	33	39	39	40
ErP efficiency	%	94	94	94	94	94
ErP decibel rating (sound power)	dBa	45	48	49	51	54
Fluing options
Maximum horizontal flue length 60/100	m	10	10	10	10	10
Maximum vertical flue length 60/100	m	10	10	10	10	10
Maximum horizontal flue length 80/125	m	25	25	25	25	25
Maximum vertical flue length 80/125	m	25	25	25	25	25
Rear flue options	YES/NO	Yes	Yes	Yes	Yes	Yes

*flow restrictor fitted to achieve a Δ42K rise

Downloads

Installation manual