ISOTWIN CONDENS HIGH EFFICIENCY CONDENSING BOILER
High Efficiency Condensing Boiler
ISOTWIN CONDENS F35E Combination boiler
Saunier Duval and High Efficiency
UP TO 35% SAVING UP TO 15% SAVING

GAS CONSUMPTION

Over a decade of pioneering experience in manufacturing high efficiency means that Saunier Duval is renowned throughout Europe as a name that provides you with innovative home heating solutions, creating a range of high efficiency boilers suitable for all applications. Right across the continent, we have built a reputation for providing our customers with the greatest possible comfort and peace of mind.
High Efficiency, low bills
Condensing boilers take more heat from the combustion gases and use energy that would otherwise be wasted. There are a number of benefits to be gained by fitting a high efficiency boiler:

OLD EXISTING BOILER

NEW STANDARD BOILER
SEDBUK A CONDENSING BOILER
It saves money a SEDBUK A condensing boiler typically consumes 30-35% less gas than an old existing boiler so bills will be lower. It saves the planet fitting a condensing boiler contributes to reducing greenhouse gas emissions.
Energy Efficiency Recommended is an Energy Saving Trust initiative backed by the government. The logo is only found on products that have been carefully selected for their energy efficiency. Buy where you see the sign and help save energy, money and the environment.
ISOTWIN CONDENS High Efficiency Condensing boiler
The ISOTWIN CONDENS high efficiency storage combi combines innovative product design with reliable performance to give you the ultimate in hot water and heating comfort. Comfort Its impressive 33 kW output provides heating and hot water comfort for even the largest family property. The ISODYN shift load storage system delivers up to 200 litres of usable domestic hot water every 4 minutes. Quick, efficient and supremely effective. Impressive 5 second hot water response.
Reliability The high grade stainless steel heat exchanger provides excellent corrosion resistance. The filters on mains water inlet and central heating return prevent blockages. A daily pump exercise program delivers assured product performance every day of the year.
Flexibility Extensive fluing options and frost protection means an ISOTWIN CONDENS can be sited almost anywhere. The Saunier Duval Plume Diverter Kit is fully compatible with the ISOTWIN CONDENS removing siting issues caused by pluming nuisance. Zero compartment ventilation means the products can be installed in a cupboard or compartment.
Efficiency The ISOTWIN CONDENS is SEDBUK A rated the highest efficiency rating achievable.
F35E High Efficiency Combination Boiler

2 year guarantee

SEDBUK A rated
5 sec HW delivery Timer compatible

Self diagnostics

Control panel
Concealed, easy to use control panel which includes a digital display with on-board diagnostics and fault code display.

Overview

The ISOTWIN CONDENS high efficiency storage combi combines innovative product design with reliable performance to give you the ultimate in hot water and heating comfort. A wall hung, fanned flued 33 kW storage combination boiler it uses a shift load storage tank to provide a remarkable 200 litres of usable hot water; plus theres antiseizure controls, frost protection and on-board diagnostics with digital display for simple, easy read-outs and self-diagnosing faults. For houses without a mains gas supply, the ISOTWIN CONDENS can be easily converted to G31 propane without a conversion kit. It all combines to make a reliable, user friendly boiler thats perfect for the larger home.
Stainless steel heat exchanger
High grade stainless steel provides excellent corrosion resistance and product reliability

House suitability

Typical 4 bedroom house.
ISOTWIN CONDENS F35E features
1 Stainless steel heat exchanger 2 Burner 3 Ignition electrode 4 Spark generator
5 Condensate trap 6 Mixing arm 7 Air/gas ratio controller 8 Fan 9 Domestic hot water pump 10 Filling loop 11 Pressure relief valve 12 Domestic hot water heat exchanger 13 Central heating expansion vessel 14 Central heating pump 15 Control box 16 Domestic hot water expansion vessel 17 Domestic hot water storage tank

ISODYN

The ISOTWIN CONDENS uses a shift load storage principle to deliver up to 200 litres of usable domestic hot water. This is achieved by mixing water stored in the integral tank with water produced during normal domestic hot water operation. This is enough water to satisfy even the largest demands and once the tank has been depleted the ISOTWIN continues to operate in normal combi mode producing 14 l/min of hot water @ 35OC rise.

20 l/min @ 40OC

8 l/min @ 60OC

4 l/min @ 10OC

12 l/min @ 60OC

8 l/min @ 10OC

12 l/min @ 10OC
Service for peace of mind
At Saunier Duval we are committed to giving you peace of mind and our service offer is designed to do just that. We have an unrivalled national service network, and in the unlikely event of a problem, you can reach our call centre 7 days a week 364 days a year, with our team of highly trained service engineers on call 6 days a week throughout the year. All this combines to ensure Saunier Duval provides the most professional, flexible and highest quality service possible to all of our customers.
Warranty for confidence and satisfaction
All Saunier Duval condensing boilers are supported by a 2 year parts warranty and a 1 year labour warranty to ensure your long term confidence and satisfaction. For ultimate peace of mind, you can choose one of our Extended Warranty options.
Technical helpline General helpline In-Warranty service Installer training

596 174

Technical specifications and Flue options
ISOTWIN CONDENS technical specifications
Model Household suitability Output heating 80OC / 60OC Output heating 50OC / 30OC Output DHW Flow rate @ 35OC t Useable DHW @ 40OC Weight Gas type Min water supply pressure Max system capacity @ 75OC SEDBUK rating DIMENSIONS Height Width Depth CLEARANCES

890 mm 700 mm 480 mm

Flue options
Horizontal concentric flue
Typical 4 Bedroom Detached House 28.0 kW 30.6kW 33.2 kW 14 l/min 200 litres 75 kg Nat/LPG 0.5 bar 240 l A
Horizontal twin pipe flue

Vertical concentric flue

Vertical twin pipe flue
Top Bottom Side Flue Type Flue Size Max flue length horizontal Max flue length vertical Max flue length twin flue
150 mm 200 mm 50 mm Fan flued 100 mm 5.0 m 5.5 m 40 m
For a comprehensive guide to flueing, please call 190

Plume Diverter Kit

The Saunier Duval Plume Diverter Kit makes siting your boiler easy by enabling you to over come any flue termination or pluming issues. The ISOTWIN CONDENS is fully compatible with the Plume Diverter Kit.
Water Research Council approved. British Gas Service Listed. C.E. Energy Efficiency Recommended is an Energy Saving Trust initiative backed by the government. The logo is only found on products that have been carefully selected for their energy efficiency. Buy where you see the sign and help save energy, money and the environment. Saunier Duval pursues a policy of continuous product improvement and reserves the right to alter specification and design without prior notice.

Armcom ref: ISOTWIN 3207 Date printed: 08.2005 Qty:5,000
Nottingham Road, Belper, Derbyshire DE56 1JT Telephone 4351 Facsimile (01773) 820569 www.saunier-duval.co.uk