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ISOTWIN CONDENS – HIGH EFFICIENCY CONDENSING BOILER
ISOTWIN CONDENS F35E Combination boiler
High Efficiency
Condensing Boiler
High Efficiency
Condensing Boiler
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Saunier Duval and High Efficiency
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:
1. It saves money – a SEDBUK A condensing boiler typically consumes 30-35%
less gas than an old existing boiler so bills will be lower.
2. It saves the planet – fitting a condensing boiler contributes to reducing
greenhouse gas emissions.
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.
OLD
EXISTING
BOILER
NEW
STANDARD
BOILER
SEDBUK A
CONDENSING
BOILER
GAS CONSUMPTION
UP TO 15% SAVING
UP TO 35% SAVING
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.
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F35E High Efficiency Combination Boiler
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 there’s 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 that’s perfect for the
larger home.
Control panel
Concealed, easy to use control panel
which includes a digital display with
on-board diagnostics and fault code
display.
Stainless steel
heat exchanger
High grade stainless steel provides
excellent corrosion resistance and
product reliability
House suitability
Typical 4 bedroom house.
2
2 year
guarantee
A
SEDBUK A
rated
5
5 sec HW
delivery
Timer
compatible
ER
Self
diagnostics
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F35E High Efficiency Combination Boiler
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.
ISOTWIN CONDENS F35E features
Stainless steel heat exchanger
Burner
Ignition electrode
Spark generator
Condensate trap
Mixing arm
Air/gas ratio controller
Fan
Domestic hot water pump
Filling loop
Pressure relief valve
Domestic hot water heat exchanger
Central heating expansion vessel
Central heating pump
Control box
Domestic hot water expansion vessel
Domestic hot water storage tank
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8 l/min @ 60OC
8 l/min @ 10OC
C
O
12 l/min @ 60OC
4 l/min @ 10
12 l/min @ 10
C
O
8 l/min @ 10
O
C
20 l/min @ 40
O
C
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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 01773 828 400
General helpline 0870 606 4351
In-Warranty service 01773 525 914
Installer training 01773 596 174
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ISOTWIN CONDENS technical specifications Flue options
Nottingham Road, Belper,
Derbyshire DE56 1JT
Telephone 0870 606 4351
Facsimile (01773) 820569
www.saunier-duval.co.uk
Armcom ref: ISOTWIN 3207 Date printed: 08.2005 Qty:5,000
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.
Model F35E
Household suitability
Typical 4 Bedroom Detached House
Output heating 80OC / 60OC
28.0 kW
Output heating 50OC / 30OC
30.6kW
Output DHW
33.2 kW
Flow rate @ 35OC Δt
14 l/min
Useable DHW @ 40OC
200 litres
Weight
75 kg
Gas type
Nat/LPG
Min water supply pressure
0.5 bar
Max system capacity @ 75OC
240 l
SEDBUK rating
A
DIMENSIONS
Height
890 mm
Width
700 mm
Depth
480 mm
CLEARANCES
To p
150 mm
Bottom
200 mm
Side
50 mm
Flue Type
Fan flued
Flue Size
100 mm
Max flue length horizontal
5.0 m
Max flue length vertical
5.5 m
Max flue length twin flue
40 m
Technical specifications and Flue options
Horizontal concentric flue
Horizontal twin pipe flue
Vertical concentric flue
Vertical twin pipe flue
For a comprehensive guide to
flueing, please call 01773 596 190
F35E High Efficiency Combination Boiler
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.
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