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- TEMPRA 24
- Installation, service and user instructions manual
Ferroli TEMPRA 24 Installation, service and user instructions manual
Summary of TEMPRA 24
Page 1
Appr . Nr . B99.04 a - ce 046 1 bl 0520 tempra 24 copper wall-mounted system, gas fi red boiler for central heating, fan assisted, room sealed compartment, electronic fl ame ignition and control installation, service and user instructions cod. 3543805/3 - 1 0/2004 g c n° 41-267-13.
Page 2: Tempra 24
2 tempra 24 ce mark ce mark documents that the ferroli gas appliances comply with the requirement contained in european directives applicable to them. In particular, the appliances comply with the following cee directives and the technical specifications provided from them: • gas appliances directiv...
Page 3: Tempra 24
3 tempra 24 1. Description 1.01 introduction the tempra 24 is defined 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 fired heat generator for central heating. A special feature of this boiler is its...
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4 tempra 24 fig. 1 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. 98 155 36 155 460 100 25 150 272 25 160 98 36 155 114 76...
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5 tempra 24 n.B. - the gas pressures at the burner and gas flows during the central heating phase given in the table refer to nominal boiler output. To reduce this output (where necessary), gas pressure must be reduced until the required output level is reached (see figures 4 and 5). • maximum worki...
Page 6: Tempra 24
6 tempra 24 2.03 boiler water flow diagram fig. 3 2.02 boiler main components fig. 2 + - 43 49 50 56 81 44 32 20 82 5 29-187 16 10 7 11 14 34 key 5 room sealed compartment 7 gas inlet 10 central heating flow 11 central heating return 14 safety valve 16 fan 19 combustion chamber 20 burner assembly 21...
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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 (fig. 4 and see paragraph 5.04). The diagrams indicate the variation in heat ...
Page 8: Tempra 24
8 tempra 24 fig. 6 pressure loss diagram sizing of additional expansion vessels: deduct from the value given in the table the 8 litre vessel supplied. Note: 1. Fill c.H. Installation to min. 1.5 bar. 2. Expansion vessel must be fitted to central heating return pipe. 3. The standard 7 litre expansion...
Page 9: Tempra 24
9 tempra 24 3. Installation details gas safety (installation & use) regulations in the interest of safety, it is the law that all gas appliances are installed by a competent person in accordance with the above regulations, building regulations/building standards scotland, codes of practice, current ...
Page 10: Tempra 24
10 tempra 24 note: a by-pass that will ensure a minimum flow rate of 6 l/min. At all all time must be fitted as far as possible from the boiler if thermostatic radiator valves are fitted thoughout. Fig. 7 central heating detailed recommendations are given in bs6798, bs5449, bs6700 and cp342 part 2. ...
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11 tempra 24 clearances: * 600mm minimum clearance for servicing access top clearance only applies to 100Ø concentric flue system 460 5 min. 5 min. 100 min. 900 200 min. 272 50 mm 600* min. 760 fig. 8 terminal position fig. 9 p d, e q q l b c a g f l j h h k n n m m q directly below an opening, air ...
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12 tempra 24 Ø3/4" Ø1/2" Ø3/4" 200 Ø118 165 min 65 21 min 5 min 183 min 295.5 min 200 min 932 min 269 110 125 min 280 1 2 3 3.01 drilling template (top flue application) (standard top flue application) select suitable mounting position for boiler, using the template mark flue outlet and boiler mount...
Page 13: Tempra 24
13 tempra 24 holes Ø : 45 47 50 Ø 3.02 restrictor for boiler operation, the restrictor supplied with the unit must be mounted following the instructions below. Determine the correct size of flue restrictor required. Before inserting the flue gas duct in the boiler, check that the restrictor fitted i...
Page 14: Tempra 24
14 tempra 24 3.03 top outlet concentric flue connection 3.03.1 vertical concentric connection d s l 125 70 50* 30 95 80 80 -3 mm/m Ø60 Ø80 70 min. * = between 10 e 60 mm 190 270 fig. 13 a vertical connector can be supplied for vertical discharge with concentric pipes. The simple mounting and use of ...
Page 15: Tempra 24
15 tempra 24 fig. 14 notes on concentric horizontal installation to locate the centre of the hole for passing the pipes through the wall, refer to fig. 12. Bear in mind that the two concentric pipes must slope downwards away from the boiler at a rate of about 3 mm/m to avoid rainwater entering the b...
Page 16: Tempra 24
16 tempra 24 fig. 16 Ø80 Ø80 air flue 1 2 3.04 top outlet: two pipe flue system 3.04.1 two pipe connection two separate ducts Ø80 for air intake and flue gas discharge can be directly connected to the boiler. For converson to top outlet (see 3.05) mount the separate outlet kit 1 insert blanking plat...
Page 17: Tempra 24
17 tempra 24 3.04.3 tab. 1 - pipes and fittings reduction table air flue v ertical horizontal v ertical horizontal description male -fem ale flue Ø80 male -fem ale bend 45 ° Ø80 male -fem ale bend 90 ° Ø80 air terminal of inlet pr otection Ø80 outlet flue air inlet for connection with split end Ø80 ...
Page 18: Tempra 24
18 tempra 24 for further accessories please refer to: "flue system manual for room sealed boiler" attention: resistance of flue restrictor (if req.) is included (see table on page 13) remove the flue restrictor. The flue and air pipes must have an inclination downward equal to 3% from boiler to outs...
Page 19: Tempra 24
19 tempra 24 remove fan by pulling off electrical connections. Pull off air pressure switch tubes from the air pressure switch remove 2 screws b. Rotate the fan downward to disengage it from the securing pin a. Fig. 21a b b a 3.05 for installation (back fl ue connection) for direct back flue connect...
Page 20: Tempra 24
20 tempra 24 rear b b fig. 21h fix with the screws (b). Refit wiring connec- tions to fan and air pressure switch tubes ensuring correct orientation. I.E. Red tube to air pressure switch connection with red dot (+) and clear tube to air pressure switch connection with no paint marking (-). Fit the f...
Page 21: Tempra 24
21 tempra 24 drilling template select suitable mounting position for boiler, using the template mark flue outlet and boiler mounting points. Drill two 10mm holes 90mm deep to accept the wall plugs, fit wall plugs. Fit two wall plugs on the wall as described in the fig. 23a. Fasten the wall bracket t...
Page 22: Tempra 24
22 tempra 24 back flue outlet (diagram 1-9) fig. 24a fig. 24b fig. 24c 1. Core drill 127mm hole (5"). 2. Push through the outer flue. 3. Gently pull back until wall seal is flush with the wall. Fig. 24d 4. Place wall plate on outer flue ensuring it is level. Mark and drill four holes, two top, for e...
Page 23: Tempra 24
23 tempra 24 fig. 24h fig. 24i 8. Install the inner metal flue into the outlet, up to the wallplate flange mark. 9. Lift boiler with flue in a place, engage inner and outer flue, slide into position 9. Make sure the inner flue is fully engaged in the flue terminal, secure boiler with two nuts and wa...
Page 24: Tempra 24
24 tempra 24 3.09 gas connection gas connection should be carried out using a rigid pipe. The flow at the gas meter should be sufficient 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...
Page 25: Tempra 24
25 tempra 24 tempra 24 “s” plan pipework layout wiring diagram ferroli tempra appliance d.H.W. Zone valve a.A.V c.H. Zone valve to ensure a passage of 6ltrs per minute an automatic by-pass must be fitted. (building regulation part l) fig. 25a 1 2 3 4 5 6 7 8 9 10 programmer dhw on ch on neutral live...
Page 26: Tempra 24
26 tempra 24 tempra 24 “y” plan pipework layout ferroli tempra appliance auto air vent to ensure a passage of 6ltrs per minute an automatic by-pass must be fitted. (building regulation document l april 2001) “y” plan valve wiring diagram 1 2 3 4 5 6 7 8 9 10 programmer neutral live ch on dhw on dhw ...
Page 27: Tempra 24
27 tempra 24 fig. 26a existing wiring - 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. - remove rear cover from facia. - remove clock blanking plate from the boiler facia panel. - mount cloc...
Page 28: Tempra 24
28 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 first time check: • that the gate valves between the boiler and central heating systems are open; • that the central heating system is filled and vented; ...
Page 29: Tempra 24
29 tempra 24 5. Adjustment and gas conversion 5.01 adjusting the pressure and flow rate to the main burner this boiler operates on the flame modulation principle. It has two fixed pressure values, minimum and maximum, which must be as shown in the table (pages 5), whichever type of gas is used. Note...
Page 30: Tempra 24
30 tempra 24 fig. 28 5.03 adjustment potentiometers + - + - p2 dhw + - p3 + - p5 + - p4 p1 ch 5.04 adjusting maximum output for central heating system (fig. 28) this adjustment must be carried out electronically using the “p3” adjustment screw starting with a cold central heating system. Connect a p...
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31 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 cas...
Page 32: Tempra 24
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. 16. Clean heat exchanger with a soft brush. 17. Re-as...
Page 33: Tempra 24
33 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 ...
Page 34: Tempra 24
34 tempra 24 7.06 air pressure switch (fig. 33) • isolate electricity • remove outer case (two screws bottom rear corners) • open room sealed department • remove the two screw "a" fixing air pressure switch • disconnect electrical leads "b" • remove pressure sensing tubes (white=d; red=c) • note rel...
Page 35: Tempra 24
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 flame rectification leads "a" • undo gas rail union "b" • undo two screws securing the burner assem- bly to t...
Page 36: Tempra 24
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 fig. 41 • unplug electrical connection "a" from sensing electrode • ...
Page 37: Tempra 24
37 tempra 24 8. Fault finding before beginning any fault finding 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 mo...
Page 38: Tempra 24
38 tempra 24 8.04 temperature sensors (thermistors) identical, but individual, negative temperature co-efficient (ntc) thermistors are fitted 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 ...
Page 39: Tempra 24
39 tempra 24 temp. Ohm 10 °c 20kohm 25 °c 10kohm 60 °c 2,5kohm 80 °c 1,25kohm temp. Sensor ntc (34) (42) jp01 on = delay between shutdown and re-ignition disabled jp01 off = delay between shutdown and re-ignition enabled jp02: jumper on for natural gas jumper on for lpg potentiometer adjustment p1 =...
Page 40: Tempra 24
40 tempra 24 fig. 40 impor tant it is necessary to provide 230v a/c switched supply from external controls (ie motorised valve or room stat) the supply must be connected to terminal 2 on appliance connector block, reference key 72. 9.02 general wiring diagram x6 x1 x2 x3 x4 1 21 21 3 1 2 3 4 5 6 7 8...
Page 41: Tempra 24
41 tempra 24 bar key description a switch off/on/reset b central heating flow temperature regulation c water pressure gauge d time clock (option) (eire only) °c bar a b c d burner on indicator boiler shut down warning central heating stand-by (flashing light) central heating circuit on (permanent li...
Page 42: Tempra 24
42 tempra 24 frost protection in cold weather the boiler may appear to run when there is no demand for heating (i.E. Clocks or room thermostats turned off). This is due to the central heating sensor going into frost protection mode. Once the boiler has reached 14°c or more it will close down until e...
Page 43: Tempra 24
43 tempra 24 time clock a 24 hour single channel time clock can be fitted 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. Auto to set time of day 1. Slide switch (a) to left position 2. Using button + and...
Page 44
Phone numbers: installer service engineer because of our constant endeavour for improvement details may vary slightly from those quoted in these instructions. Lichfi eld road, branston industrial estate, burton upon trent, staffordshire de14 3hd tel. 08707 282 885 - fax 08707 282 886 all specificati...