Ferroli TEMPRA 24 Installation, Service And User Instructions Manual
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Ferroli TEMPRA 24 Installation, Service And User Instructions Manual

Ferroli TEMPRA 24 Installation, Service And User Instructions Manual

Copper wall-mounted system, gas fired boiler for central heating , fan assisted, room sealed compartment, electronic flame ignition and control
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TEMPRA 24
Copper Wall-Mounted System,
Gas Fired Boiler for Central Heating ,
Fan Assisted, Room Sealed Compartment,
Electronic Flame Ignition and Control
INSTALLATION, SERVICE AND USER
INSTRUCTIONS

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Summary of Contents for Ferroli TEMPRA 24

  • Page 1 TEMPRA 24 Copper Wall-Mounted System, Gas Fired Boiler for Central Heating , Fan Assisted, Room Sealed Compartment, Electronic Flame Ignition and Control INSTALLATION, SERVICE AND USER INSTRUCTIONS...

  • Page 2: Table Of Contents

    You can check with the CORGI register by calling CORGI on 01256 372300". Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme. Benchmark has been introduced to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency.

  • Page 3: Description

    1.01 Introduction The Tempra 24 is defi ned as a “room sealed” boiler, all air required for combustion is taken from outside the room in which it is installed. It is a new high performance gas fi red heat generator for central heating. A special feature of this boiler is its built-in electronic fl...

  • Page 4: Technical And Dimensional Characteristics

    TEMPRA 24 2. TECHNICAL AND DIMENSIONAL CHARACTERISTICS 2.01 Technical information Tempra 24 boilers are central heating generators and are produced as standard to function with natural gas or Liquid Petrolium Gas converted appliances. 100 25 150 Fig. 1 Ø80 Ø80 Ø80...
  • Page 5 TEMPRA 24 Technical Data Output Pmax Pmin Nominal Heat Input (Net) 25,8 11,2 23,3 Nominal Heat Output Gas supply Pmax Pmin Main injectors, Natural Gas (G20) 12 x 1.3 Supply pressure, Natural Gas (G20) mbar 20,0 Burner pressure, Natural Gas (G20)
  • Page 6 TEMPRA 24 2.02 Boiler main components 2.03 Boiler water flow diagram 29 187 29-187 Fig. 2 Fig. 3 °C Room sealed compartment Gas inlet Central heating flow Central heating return Gas valve Safety valve Safety overheat thermostat Central heating flow limit thermostat...
  • Page 7 TEMPRA 24 2.04 Central heating adjustment (not normally required) To adjust boiler heat input (thus also regulating heat output to the central heating water) simply adjust the main burner via the electronic control board (fi g. 4 and see paragraph 5.04).
  • Page 8 TEMPRA 24 2.05 Pump characteristics The pump head available for circulating the water is given in fi g. 5. N.B. - The pump is factory set at position 3. The pump is a Grundfos type 15-50 UPS series. Grundfos Pump per formance graph Note - Minimum fl...

  • Page 9: Installation Details

    Gas Engineers document IGE/UP/7. If in doubt advice should be sought from the Local Supplier. Location of Boiler The installation of the Tempra 24 must be on a suitable non-combustible load bearing wall which will provide an adequate fi xing for the boiler mounting bracket assembly.
  • Page 10 TEMPRA 24 Central Heating Detailed recommendations are given in BS6798, BS5449, BS6700 and CP342 Part 2. Pipework not forming part of the useful heating surface should be insulated to prevent any heat losses or possible freezing (i.e. in roof spaces or ventilated underfl...

  • Page 11: Terminal Position

    TEMPRA 24 5 min. 5 min. 50 mm CLEARANCES: * 600mm minimum clearance for servicing access Top clearance only applies to 100Ø concentric fl ue system 600* min. Fig. 8 Terminal Position D, E Minimum dimensions of fl ue terminal positions...
  • Page 12 TEMPRA 24 3.01 Drilling Template (Top Flue Application) (Standard Top Flue Application) Select suitable mounting position boiler, using the template mark fl ue outlet and boiler mounting points. Drill two 10mm holes 70mm deep to accept the wall plugs. Fit standard wall plugs on the left and right side and the special wall plug in the middle (fi...
  • Page 13 TEMPRA 24 3.02 Restrictor For boiler operation, the restrictor supplied with the unit must be mounted following the instructions below. Determine the correct size of fl ue restrictor required. Before inserting the fl ue gas duct in the boiler, check that the restrictor fi...
  • Page 14 TEMPRA 24 3.03 Top Outlet Concentric Flue Connection 3.03.1 Vertical concentric connection A vertical connector can be supplied for vertical discharge with concentric pipes. The simple mounting and use of double lip gaskets Concentric at the joints makes this an extremely easy and safe Vertical option.
  • Page 15 TEMPRA 24 Notes on concentric horizontal installation To locate the centre of the hole for passing the pipes through the wall, refer to fi g. 12. Bear in mind that the two concentric pipes must slope downwards away from the boiler at a rate of...
  • Page 16 2 in remaining air intake. A varied number of accessories for two pipe systems are available from Ferroli (ref. to page 17). Before installing your system please check via calculation table at 3.04.2 you are not exceeding the maximum permissible length for the appliance.
  • Page 17 TEMPRA 24 3.04.3 Tab. 1 - Pipes and fittings reduction table Reduction Flue Description Ø...
  • Page 18 TEMPRA 24 For further accessories please refer to: Attention: Resistance of fl ue restrictor (if req.) is included (see table on page 13) "Flue system manual for room sealed boiler" Remove the fl ue restrictor. Example of calculation for wall inlet/outlet The fl...
  • Page 19 TEMPRA 24 3.05 For installation (back fl ue connection) For direct back fl ue connection it is necessary to use the optional kit, and it is required to alter the fan direction inside the boiler. Follow carefully next procedure: Remove fan by pulling off electrical connections.
  • Page 20 TEMPRA 24 Fix with the screws (b). Refi t wiring connec- tions to fan and air pressure switch tubes ensuring correct orientation. I.E. red tube Rear to air pressure switch connection with red dot (+) and clear tube to air pressure switch connection with no paint marking (-).
  • Page 21 TEMPRA 24 Drilling Template Select suitable mounting position boiler, using the template mark fl ue outlet and boiler mounting points. Drill two 10mm holes 90mm deep to accept the wall plugs, fi t wall plugs. Fit two wall plugs on the wall as described in the fi g.
  • Page 22 TEMPRA 24 Back flue outlet (Diagram 1-9) 2. Push through the outer fl ue. 3. Gently pull back until wall seal 1. Core drill 127mm hole (5"). is fl ush with the wall. Fig. 24b Fig. 24c Fig. 24a 4. Place wall plate on outer fl ue ensuring it is level.
  • Page 23 3.07 Water treatment if water treatment is used Ferroli Ltd recommend only the use of Fernox or Sentinel water treatment products, which must be used in accordance with the manufacturers instructions. For further information contact: Fernox Manufacturing Co.
  • Page 24 TEMPRA 24 3.09 Gas connection Gas connection should be carried out using a rigid pipe. The fl ow at the gas meter should be suffi cient for the simultaneous use at full gas rate of all appliances connected to it. Connect the gas supply to the boiler according to current regulations. The diameter of the gas tube leaving the boiler is not the determining factor in choosing the diameter of the pipe between the appliance and the meter.

  • Page 25: Wiring Diagram

    TEMPRA 24 Tempra 24 “S” Plan Pipework layout A.A.V FERROLI TEMPRA APPLIANCE D.H.W. Zone Valve To ensure a passage of 6ltrs per minute an Automatic by-pass must be fitted. (Building regulation part L) C.H. Zone Valve Fig. 25a Wiring diagram...
  • Page 26 TEMPRA 24 Tempra 24 “Y” Plan Pipework layout Auto air vent FERROLI TEMPRA APPLIANCE To ensure a passage of 6ltrs per minute an Automatic by-pass must be fitted. (Building regulation Document L April 2001) “Y” Plan valve Fig. 25c Wiring diagram...
  • Page 27 TEMPRA 24 3.14 Ferroli Tempra boiler time clock fixing (optional) (EIRE only) - Remove outer case by removing two securing screws from the rear bottom corners and lift off. - Remove screw securing facia panel and swing facia panel down.

  • Page 28: Commissioning And Testing

    TEMPRA 24 4. COMMISSIONING AND TESTING 4.01 Checks to be carried out before starting up for the first time When starting the boiler up for the fi rst time check: • that the gate valves between the boiler and central heating systems are open;...

  • Page 29: Adjustment And Gas Conversion

    TEMPRA 24 5. ADJUSTMENT AND GAS CONVERSION 5.01 Adjusting the pressure and flow rate to the main burner This boiler operates on the fl ame modulation principle. It has two fi xed pressure values, minimum and maximum, which must be as shown in the table (pages 5), whichever type of gas is used.
  • Page 30 Customer Technical Service Helpline. 5.09 Gas conversion The following adjustment and conversion operations must be carried out by competent personnel. FERROLI Limited accepts no liability for damage to property or personal injury resulting from tampering with the boiler by unauthorised persons.

  • Page 31: Maintenance And Cleaning

    TEMPRA 24 6. MAINTENANCE AND CLEANING The following operations must be carried out by Corgi registered engineers only. 6.01 Annual Servicing The following should be checked at least once a year: • Water pressure in the central heating system when cold should be about 1 bar. If this is not the case, bring it back to this value.
  • Page 32 TEMPRA 24 14. Undo the gas union in the centre of burner rail and take out the two securing screws. Remove the burner rail and clean rail and injectors. 15. Remove two screws securing the burner assembly and remove the assembly. Clean burners.

  • Page 33: Replacement Of Parts

    TEMPRA 24 7. Replacement of Parts 7.01 Initial procedure a) The boiler is cold, electricity supply is isolated, and the gas supply is turned off at the inlet of the boiler b) For replacement of parts where water connections are broken, it will be necessary to isolate and drain either or both the central heating or domestic hot water circuits of the boiler only.
  • Page 34 TEMPRA 24 7.05 Gas valve (fig. 32) • Isolate gas and electricity supplies • Remove outer case (two screws bottom rear cor- ners) • Remove the two securing screws and lower control panel • Disconnect electrical connections from valve ("A") •...
  • Page 35 TEMPRA 24 7.08 Removal of burner (fig. 35) • Isolate gas and electricity supplies • Remove outer case (two screws bottom rear corners) • Remove room sealed cover • Disconnect ignition and fl ame rectifi cation leads "A" • undo gas rail union "B"...
  • Page 36 TEMPRA 24 7.12 Spark or flame detect electrode (fig. 37) • Isolate gas and electricity supply • Remove outer case (two screws bottom rear corners) • Open room sealed compartment and combu- stion chamber • Identify electrode from fi g. 41 •...

  • Page 37: Fault Finding

    TEMPRA 24 8. FAULT FINDING Before beginning any fault fi nding ensure that gas, water and electricity are available. WARNING: DO NOT link any terminals on block X10 or X11 as this will damage the PCB beyond repair. 8.01 Operating Sequence With the power established the boiler is in its stand-by mode i.
  • Page 38 TEMPRA 24 8.04 Temperature sensors (thermistors) Identical, but individual, negative temperature co-effi cient (NTC) thermistors are fi tted in the C.H. and D.H.W. outlets from the heat exchanger. As the water temperature increases the resistance in the thermistor decreases. This causes the PCB to reduce the voltage to the modureg, in turn reducing the burner pressure.

  • Page 39: Electrical And Functional Scheme

    TEMPRA 24 9. Electrical and functional scheme 9.01 Main components layout on electronic boards Potentiometer adjustment P1 = Central heating fl ow temperature adjustment P2 = Factory set; don't touch P3 = Central heating fl ow output adjustment P4 = Ignition gas pressure adjustment...
  • Page 40 TEMPRA 24 9.02 General wiring diagram...

  • Page 41: User Instructions

    TEMPRA 24 10. USER INSTRUCTIONS °C Fig. 41 KEY DESCRIPTION Switch OFF/ON/RESET Burner on indicator Central heating flow Boiler shut down warning temperature regulation Central heating stand-by (Flashing light) Water pressure gauge Central heating circuit on (Permanent light) Insufficient pressure in central heating system (Flashing light)
  • Page 42 TEMPRA 24 Boiler lock out In the event of the red lockout light ( ) coming on, the on/off/reset switch (A) should be turned clockwise against the spring tension to the reset position and released (this will put the boiler into three minute delay if in the heating mode).
  • Page 43 TEMPRA 24 Time Clock A 24 hour single channel time clock can be fi tted to the boiler to control the central heating, and hot water systems (EIRE only). This option is not suitable for the U.K. building regulations. Slide switch: set clock - auto - set programme AUTO Display.
  • Page 44 Phone numbers: Installer ERVICE NGINEER BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS. ALL SPECIFICATIONS SUBJECT TO CHANGE Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check this in not caused by lack of electricity supply, gas supply or low water pressure before calling our Customer Service Helpline.

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