Saunier Duval ISOFAST F 28 E Installation And Operating Instructions Manual
Wall mounted modulating combination boiler
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- Page 1 Heating and hot water for the professionals ISOFAST I N W A R R A N T Y T E C H N I C A L H E L P L I N E 01773 828400 THIS IS A CAT I2E+ APPLIANCE 01773 828100...
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Page 2: Table Of Contents
The identification plate located on the inside of the appliance certifies the origin where the product was manufactured and the country for which it is intended. If you see any exception to this rule, please contact your nearest Saunier Duval dealer. Thank you in advance for your assistance. -
Page 3: Introduction
INTRODUCTION The ISOFAST F boiler is a wall mounted modulating flue system will pass directly to the rear or to either combination boiler with electronic ignition provid- side to the terminal fitted on the outside wall face. ing central heating and instantaneous hot water. The boiler is equipped with a 4 litre domestic hot The installation must be carried out by a compe- water storage vessel that ensures maximum hot... -
Page 4: Controls & Lighting
CONTROLS AND LIGHTING Lighting the boiler : Make sure that: The boiler is connected to the electrical supply. The gas service cock is open. Then follow the instructions below : Press the On/Off button (1) The pressure must be between 1 and 2 bar. If not, the system must be filled by a competent person. mode To stop the boiler : Press button (1) Setting to the SUMMER position... -
Page 5: Clock-Instructions For Use
CLOCK - INSTRUCTIONS FOR USE The boiler must be conected to the electrical sup- Setting the programme "On" and "Off" times ply and switched on. Select the "On" times by pushing the white tap- pets to the outside, see diagram 2. Select the 'Off' times by pushing the white tap- Setting the time Rotate the clock actuater mechanism clockwise,... -
Page 6: Technical Data
TECHNICAL DATA Heating Hot water Heating output ajustable from ... (kW) 10,4 11,7 Hot water output to ... (kW) 27,6 34,6 automatically variable from ... (kW) 10,4 11,7 from ... (BTU/H) 35,485 39,920 to ... (kW) 27,6 34,6 from ... (BTU/H) 35,485 39,920 to ... -
Page 7: Dimensions
- the boiler itself - the fixing jig - the flue system Weight: 51,2 kg = 470 ( Isofast F 28 E ) 552 ( Isofast F 35 E ) Diagram 5 HEATING SYSTEM DESIGN The ISOFAST is compatible with any type of ins- The total volume of water permitted for the heat- tallation. -
Page 8: Domestic Hot Water System Design
DOMESTIC HOT WATER SYSTEM DESIGN Copper tubing or plastic Hep 20 may be used for 'Hard Water Areas' the domestic hot water system. Unnecessary In areas where the water is 'hard', more than pressure losses should be avoided. 200mg/litre, it is recommended that a proprietary A flow restrictor limiting the flow through the boiler scale reducer is fitted in the cold water supply to to a maximum of 16 l/min is fitted to the boiler. -
Page 9: Fixing Jig
FIXING JIG The fixing jig is made up, from left to right, as fol- C - Heating flow fitting with isolating valve (q), lows: drain knob (r) and safety valve (s A - Heating return fitting with isolating valve(v) and D - Domestic hot water outlet fitting with safety drain knob (u). -
Page 10: Boiler Location
9. Should any doubt exist as to the permissible posi- tion of the terminal, contact the Saunier Duval Cutting the flue hole Technical Helpline 01773 828400. Making allowance for the slope of the flue, cut hole in external wall, preferably using a core drill. -
Page 11: Boiler Installation
Diagram 12 Outer pipe Extended flue The horizontal flue is extended by using one or more of the 1000 mm extension pipes, Saunier Duval part Cutting length number 85091. These are connected together by push fit type joints, clamps and seals. -
Page 12: Flue Installation
FLUE INSTALLATION Table 4 The standard flue kit 85090, see diag. 13, comprises : Flue extension cutting lengths - External rubber sealing collar ....... A - Outer pipe ..............B Cutting length - Plastic flange ............C - Inner pipe ..............D Flue option outer pipe inner pipe... -
Page 13: Electrical Installation
ELECTRICAL CONNECTION Warning. This boiler must be earthed cessory, Saunier Duval part number 40011. Please All system components must be of an approved contact your supplier. type. The boiler will work for heating without a room ther- Connection of the whole electrical system and any... -
Page 14: Commissioning
COMMISSIONING The commissioning and first firing of the boiler must Diagram 18 only be done by a competent person. Gas installation It is recommended that any air is purged from the supply at the gas inlet test point on the gas valve, see diagram 18. - Page 15 COMMISSIONING Bleed each radiator to re- Leave the cap on the Open various hot move the air, re-tighten pump auto air vent open. water taps to bleed bleed screws. system. Make sure the display indicates a system pressure of between 1 and 2 bar. Re-fill system as necessary.
- Page 16 COMMISSIONING Lighting the boiler : Make sure that: The boiler is connected to the electrical supply. The gas service cock is open. Then follow the instructions below : Press the On/Off button (1) The pressure must be between 1 and 2 bar. If not, the system must be filled by a competent person. mode To stop the boiler : Press button (1) Adjust heating temperature to maximum .
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Page 17: Safety Devices
COMMISSIONING Setting the heating output Setting the heating output The heating output can be set without the use of a pressure gauge; proceed as follows: Press the display light button and keep pressed for 5 seconds, see diagram 20. Note:The boiler has now been put into 'Service Mode', allowing certain adjustments to be made mode and diagnostic fault codes to be displayed. - Page 18 SAFETY DEVICES No gas supply General safety devices This will be indicated on the display as a Air flow rate safety device pictogram of a spark. If an obstruction, even partial, of the flue occurs, To rectify this, pro- for any reason whatsoever, the built in safety sys- ceed as follows: tem of the boiler will turn the boiler OFF and the fan will continue to run.
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Page 19: Settings
SETTINGS Gas valve setting MODULATING COIL All boilers are tested and factory set during manu- facture. Should it be necessary to reset a gas valve, for example, after replacement, proceed as fol- lows: Shut down boiler. Minimum setting Remove one electrical connector from the modulating gas valve coil, see diagram 23. -
Page 20: Routine Cleaning And Inspection
ROUTINE CLEANING AND INSPECTION To ensure the continued efficient and safe opera- tion of the boiler it is recommended that it is checked and serviced at regular intervals. The fre- quency of servicing will depend upon the particu- lar installation conditions and usage, but in gen- eral once a year should be enough. -
Page 21: Replacement Of Parts
ROUTINE CLEANING AND INSPECTION Flue system Cold water inlet filter • Check externally to make sure that flue is not Drain down hot water circuit of boiler only, as fol blocked lows: • Inspect flue system to make sure that all fittings •... - Page 22 REPLACEMENT OF PARTS • Open isolating valves on flow and return connec- let pipe to flow sensor and carefully remove from tions, refill, vent and pressurise boiler. sensor. • Check for leaks. • Pull out slotted metal clip securing flow sensor to •...
- Page 23 REPLACEMENT OF PARTS To replace pump pipe from 3-way valve/bypass housing to storage • Drain down heating circuit of the boiler only, as vessel. described previously. • Undo pipe from 3-way valve/bypass housing to Note: It is not necessary to drain down entire heat- fixing jig.
- Page 24 REPLACEMENT OF PARTS • Fit replacement coil in reverse order to removal. • Refit electrical connections in reverse order to re- moval, the polarity of the wires to the modulating coil is not important. To replace central heating safety valve If safety valve seating is damaged, it will be neces- sary to replace safety valve as a complete unit, repair is not possible.
- Page 25 REPLACEMENT OF PARTS • Remove slotted metal clips from heat exchanger con- To replace combustion chamber insulation nection pipes. • Remove combustion chamber cover as de- • Undo nut securing pipe from heat exchanger to 3- scribed in ‘Routine Cleaning and Inspection’. way valve/bypass housing.
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Page 26: Boiler Schematic
BOILER SCHEMATIC 1 - Domestic thermistor 16 - Bypass 2 - Three way valve 17 - Domestic heat exchanger 3 - Gas valve 18 - Pump 4 - Gas valve ignition module 19 - Expansion vessel 5 - Heating element 20 - Heating thermistor 6 - Domestic storage vessel 21 - Overheat safety thermostat... -
Page 27: Technical Data
TECHNICAL DATA Heating Hot water Heating output ajustable from ... (kW) 10,4 11,7 Hot water output to ... (kW) 27,6 34,6 automatically variable from ... (kW) 10,4 11,7 from ... (BTU/H) 35,485 39,920 to ... (kW) 27,6 34,6 from ... (BTU/H) 35,485 39,920 to ... -
Page 28: Schematic Wiring Diagram
SCHEMATIC WIRING DIAGRAM Ramoneur Opt. B210 H6.2 B211 B113 B114 B115 h8.1 h8.2 h4.1 B110 h4.3 h3.1 h3.3 h1.1 h1.2 CTN 3 h2.4 h2.2 h2.3 CTN 2 h2.5 h2.1 h5.2 CTN 1 h5.3 h5.1 Flam Vitesse Extracteur (option) INTERFACE Clock ON/OFF switch M/A - Domestic flow sensor... -
Page 29: Fault Finding
FAULT FINDING Before trying to operate the boiler make sure that : Should there be any doubt about the voltage sup- • All gas supply cocks are open and that the gas ply to any of the components, it is possible to carry supply has been purged of air. - Page 30 FAULT FINDING List of fault codes Code Fault Additional display information No fault Air flow fault Ignition fault -flame detection Overheating Central heating thermistor/wiring fault Domestic hot water thermistor/wiring fault Storage vessel thermistor/wiring fault System pressure sensor fault Fan fault Pump blockage User interface fault Main PCB fault...
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Page 31: Spare Parts
FAULT FINDING Thermistor values System pressure sensor The following table applies to the central heating, The resistance of the sensor at various pressures is domestic hot water and storage vessel thermistors: as follows : Temperature ( C) Resistance ( ) 0 bar ...... - Page 32 115919 B 05/99...