End User, Installation & Servicing Instructions Type C Boilers G.C.N: 47-116-28 Prog .
TABLE OF CONTENTS 1. 2. 3. 16. Gas Adjustments 16.1 Changing the Type of Gas 17. Maintenance Control Panel How to Use 18. Servicing Instructions Replacement of Parts 4. Anti-Frost Device 18.1 5. Maintenance 18.2 To Gain General Access 6. Trouble Shooting 18.2.1 18.2.2 Removing the front panel Removing the control panel 7. Filling Instructions 18.3 Access to the Control System Removing the main PCB Removing the display PCB Removing the fuses Removing the programmer 8. Time Clock 8.
Dear Customer, Thank you for choosing an ARISTON boiler. We guarantee that your boiler is a reliable and technically sound product. The following Instructions provide detailed instructions and recommendations for proper installation, use and maintenance. Remember to keep this manual in a safe place for future reference e.g. by the gas meter. Your local MTS Servicing Centre is at your complete disposal for all requirements.
1. GENERAL INFORMATION MTS (GB) Limited support the initiative. Your installer will give you, and show you how to use, a Log Book which will give you important information about your boiler and heating system. Please have this Log Book to hand whenever you contact a service engineer or us. All CORGI Registered Installers carry a CORGI ID card, and have a registration number. Both should be recorded in your boiler Log Book.
3. HOW TO USE 33 25 29 30 31 32 P1 P2 OFF ON 1 2 3 4 0 1 2 3 4 34 h Prog . R Switching on 1. Check that the pressure in the heating system is adequate, i.e. the pressure gauge 33 shows 1 bar minimum and 1.5 bar maximum. 2. Check that the gas service tap 39 (Fig. 3.3) is opened (Figs. 3.1 and 3.2) and that the mains power is on, the green indicator 29 will light. The boiler is now ready to use.
To obtain central heating only - Turn the selector switch 25 to the « » position, the green LED 29 will light. - Ensure that the time clock is on (see SECTION 8), and that the room thermostat is calling for heat. - The control knob 27 « » allows you to adjust the water temperature in the central heating circuit according to seasonal requirements. - Turn the control knob 27: - Clockwise in cold weather - Anti-clockwise in mild weather (by turning the knob too far, the Central Heating will switch off).
33 6. TROUBLE SHOOTING Incorrect functions are signalled by the diagnostic indicator LED 31 display flashing. Contact your local authorised Servicing Centre (unless a low water fault is indicated, in which case refer to Section 7 for filling instructions). 31 P1 P2 OFF ON 1 2 3 4 0 1 2 3 4 h Prog . R m Day FIG. 6.1 7.
. TIME CLOCK 8.1 Setting the Mechanical Clock 1. General layout The mechanical clock covers a 24 hour period. Each tappet represents 15 minutes A (Fig. 4). An override switch is located on the clock B (Fig 8.1). 2. To set the time To set the time of day, grasp the outer edge of the dial and turn slowly clockwise until the correct time is lined up with the arrow C (Fig. 8.1). 3. To Set the "On" and "Off" times The clock uses a 24hours system. e.g. 8 = 8.00 am and 18 = 6.
Setting the Digital Clock Manual switch Summer and winter time setting Reset Enter switching times Enter the hours h Prog . 8.2 Weekdays flash m Imput time Enter minutes Day Enter weekday/s Automatic Operation Manual Operation Continuous Operation = ON = ON = Continuously ON = OFF = OFF = Continuously OFF The switching times correspond to the program entered.
Programme ON or OFF with the “ ” key: “ ”= OFF; “ ”= ON Enter the hour using “h” Enter the minutes using “m” If a switching command is to be carried out every day (1 2 3 4 5 6 7) then store using the “ ” key, otherwise select the day(s) it is to be carried out by using the “Day” key. When the day seIection is left bIank, the programmed switching instruction operates at the same time every day 1 2 3 4 5 6 = Monday – Saturday 12345 = Monday – Friday 67 =Saturday – Sunday Selection of single days: 1 = Mon. ...
9. GENERAL INFORMATION Read the instructions and recommendations in these Installation and Servicing Instructions carefully to ensure proper installation, use and FOR THE INSTALLER maintenance of the appliance. Keep this manual in a safe place. You may need it for your own reference while Servicing Technicians or your installer may need to consult it in the future. This is a combined appliance for the production of central heating (C.H.) and domestic hot water (D.H.W.).
7 - Visual check of the primary heat exchanger: - check for overheating of the exchangers fins; - clean the exhaust side of the exchanger and fan if necessary. 8 - Regulate the gas pressure, ignition pressure, partial flame, maximum flame. 9 - Check proper operation of the heating safety system: - maximum safety temperature; - maximum safety pressure. 10 - Check the proper operation of the gas safety system: - gas or flame safety device; - gas valve safety device.
10. INSTALLATION The technical information and instructions provided herein below are intended for the installer / Servicing Technician so that the unit may be installed and serviced correctly and safely. 10.1 Delivery There will be two items: 1 - The fully assembled boiler 2 - A separately boxed connection kit 10.2 Reference Standards WATER REGULATIONS In GB it is necessary to comply with the Water Supply (Water Fittings) Regulations 1999, for Scotland, The Water Bylaws 2000, Scotland.
and in the Republic of Ireland in accordance with the following Codes of Practice: I.S.
The type C appliances (in which the combustion circuit, air vent intake and combustion chamber are air-tight with respect to the room in which the appliance is installed) can be installed in any type of room. Secondary ventilation is not required with this boiler. The boiler must be installed on a solid, non-combustible, permanent wall to prevent access from the rear. 10.4 Clearances 10.
10.6 Mounting the Appliance After removing the boiler from its packaging, remove the template from the separate box containing the connection kit. NOTE: Pay particular attention to any test water that may spill from the appliance. 44 39 40 41 38 42 43 FIG. 10.2 Legend: 39 = Gas service tap 40 = Heating return 41 = Heating flow 42 = Water service tap 43 = Tank hot water flow 38 = Water tank valve 44 = Heating valve 10.
Warning, this appliance must be earthed. External wiring must be correctly earthed, polarised and in accordance with relevant regulations / rules. In GB this is the current I.E.E. WIRING REGULATIONS. In IE reference should be made to the current edition of the ETCI rules. This boiler is supplied for connection to a 220 - 240 V~ 50 Hz supply. The supply must be fused at 3 A.
System Design: This boiler is suitable only for sealed systems. Drain Cocks: These must be located in accessible positions to permit the draining of the whole system. The taps must be at least 15mm nominal size an manufactured in accordance with BS 2870:1980.
iii) Discharges at high level; I.e. into a metal hopper and metal down pipe with the end of the discharge pipe clearly visible (tundish visible or not). Or onto a roof capable of withstanding high temperature discharges of water 3m from any plastic guttering systems that would take such a discharge (tundish visible).
It can accept up to 7l (1.5 gal) of expansion water. If the heating circuit has an unusually high water content, calculate the total expansion and add an additional sealed expansion vessel with adequate capacity. Domestic Water: The domestic water must be in accordance with the relevant recommendation of BS 5546:1990. Copper tubing to BS EN 1057:1996 is recommended for water carrying pipe work and must be used for pipe work carrying drinking water.
o Residual Head of the Boiler ∆T = 20 C Operating Pressure m/H2O mCE 6 Minimum flow (thermostatic valves closed) 5 GV 4 3 PV 2 1 0 100 200 300 500 400 600 700 800 900 1000 1100 1200 l/h Fig. 10.5 16 7 12 A BC D E F 6 5 1 3 Pressure Reducing Valve V 13 Cold Water Inlet 4 Other Users 2 9 8 8 10 11 Drain Tap (at lowest point) ABCDEF12345- Gas Inlet C.H. Return C.H. Flow D.H.W. Secondary Return D.H.W. Flow C.W.
11. Connecting the Flue 11.1 Flue Connections Fig. 11.1 TERMINAL POSITION A B C D E F G H I J - K L M N - mm Directly above or below an openable window or other opening Below gutters, solid pipes or drain pipes Below eaves Below balconies or car-port roof From vertical drain pipes and soil pipes From internal or external corners Above ground or balcony level From a surface facing a terminal From a terminal facing a terminal From an opening in the car port (e.g.
WARNING!! The exhaust gas ducts must not be in contact with or close to inflammable material and should not pass through building structures or walls made of inflammable material. When replacing an old appliance, the flue must be changed. IMPORTANT!! Ensure that the flue is not blocked. Ensure that the flue is assembled correctly, is secure and is free of leaks. The minimum acceptable spacing from the terminal to obstructions and ventilation openings are specified in Fig. 11.
e.g. X = 508mm + 22mm = 530mm 860 - 530 = 330mm (Length to be cut from the plain end of the flue). Once cut to the required length, ensure that the flue is free from burrs and reassemble the flue. If fitting the flue from inside of the building attach the grey outer wall seal to the flue terminal and push through the flue through the hole, once the wall seal has passed through the hole, pull the flue back until the seal is flush with the wall.
11.4 Fitting the coaxial flue (Ø 60/100 Vertical) CONTENTS: 1X SILICONE O-RING (60mm) 1X CONICAL ADAPTOR (60/100mm : 80/125mm) 1X VERTICAL FLUE KIT (80/125mm) 3X SCREWS The vertical flue kit is supplied with a specially designed weather proof terminal fitted, it can be used either with a flat roof or a pitched roof. (see Figs. 11.7 and 11.9). The Vertical flue kits maximum and minimum useable lengths with both flat and pitched roof flashings are indicated in Figs. 11.9 and 11.10 also.
11.5 Fitting the twin pipe (Ø80/80) Where it is not possible to terminate the flue within the distance permitted for coaxial flues, the twin flue pipe can be used by fitting a special adaptor to the flue connector and using the aperture for the air intake located on top of the combustion chamber. Considerations necessary for twin flue installation; It is most important to avoid any possible condense formation entering the appliance. Condense may form when the exhaust pipe is longer than 6.6m.
NOTE: Vertical twin flue installations must have a trap on the exhaust. MTS supply a suitable condense trap Part No. 705774 and recommend that this be used in the event that the flue may form condense. When siting the twin flue pipe, the air intake and exhaust terminals must terminate on the same wall, the centres of the terminals must be a minimum of 280 mm apart and the air intake must not be sited above the exhaust terminal (refer to Fig. 11.14).
Concentric outlet 60/100 30 kW (Type 1, Type 2, Type 3) Restrictor ø 88.5 L min. = 0.3 m L max. = 1 m Without restrictor L min. = 1 m L max. = 3 m Max. length 3m / L = total length of gas intake and exhaust ducts. Twin flue outlet 30 kW Type 4 80/80 Type 5 80/80 Restrictor ø 42 L min. > 0 m L max. = 4.5 m L min. > 0 m L max. = 11.5 m Without restrictor L min. > 4.5 m L max. = 34 m L min. > 11.5 m L max. = 56 m Risk of condense forming L > 6.6 m L > 6.6 m L > 6.6 m L > 6.6 m Air intake length 1 m.
12. Electrical Connections The 220-240 V and earth connection are made by using the lead provided C (Fig. 12.1) C IMPORTANT!! C ONNECTION SHOULD BE MADE VIA A 3 AMP FUSED DOUBLE POLE ISOLATING SWITCH WITH CONTACT SEPERATION OF AT LEAST BOTH POLES. 3 ALTERNATIVELY, 3 MM ON 3 AMP, A FUSED PIN PLUG AND UNSWITCHED SOCKET MAY BE USED, PROVIDED IT IS NOT USED IN A ROOM CONTAINING A BATH OR SHOWER. IT SHOULD ONLY SUPPLY THE APPLIANCE. External Controls Open the cover B with a screwdriver (Fig.
FIG. 12.4 13.
14. Water circuit Diagrams 26 25 24 8 1 13 23 4 3 12 11 2 18 17 5 22 7 6 21 19 16 14 28 35 9 20 10 29 30 36 34 33 32 31 37 LEGEND : 1. - Main heat exchanger 2. - Burner 3. - Ignition electrodes 4. - Flame detection electrode 5. - Modulating valve 6. - Safety valve 7. - Safety valve 8. - Domestic hot water tank 9. - Water tank valve 10. - Water service tap 11. - Heating flow thermistor 12. - Tank thermistor 13. - Hot water control thermistor 14. - Pump 16. - DHW activator 17.
15. COMMISSIONING 15.1 Initial Preparation MTS (GB) Limited support the initiative. Within the information pack you will find a copy of the Log Book. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is signed by them. Please instruct your customer that they must have their Log Book with them whenever they contact a service engineer or us.
When the installation and filling are completed, flush the system while cold, refill, turn on the Central Heating system (SECTION 3) and run it until the temperature has reached the boiler operating temperature. The system must then be immediately flushed through. The flushing procedure must be in line with BS 7593:1992 code of practice for treatment of water in domestic hot water central heating systems.
15.3 Removal and fitting of the case Servicing Removal of the case - undo the 4 case retaining screws (Fig. 15.1) - disengage the clips - remove the case A A FIG. 15.2 detail A A Fitting the case Remove the protective film from the front and rear of the case - position the case (Fig. 15.2) - engage both clips in the case (see detail) - fasten the 4 retaining screws A on the front FIG. 15.3 Servicing To maintain the unit, it is possible to move the electrical box without having to disconnect it.
15.4 Control Panel Legend: 25 - Selector Knob : 33 25 29 Central Heating and Hot Water 30 31 Hot Water Only O 32 P1 ON 26 - D.H.W. temperature control knob 1 2 3 4 0 Central Heating Only P2 OFF Stand-by 1 2 3 4 27 - C.H. temperatre control knob R 28 - Heating temperature indicator and diagnostic h Prog . indicator 29 - Green indicator - Power ON m 30 - Orange indicator - Burner ON Day 31 - Red indicator - Lock out / flame failure 32 - Reset button 33 - Pressure gauge 27 15.
To obtain central heating only - Turn the selector switch 25 to the « » position, the green LED 29 will light. - Ensure that the time clock is on (see Section 4), and if fitted that the room thermostat is calling for heat. - The control knob 27 « » allows you to adjust the water temperature in the central heating circuit according to seasonal requirements.
By comparing the actual temperature in relation to the set point on the thermostat control knob. The thermostat control knob regulates the temperature to between approximately 40oC to 85oC. Once the maximum set temperature has been achieved the burner switches off. To avoid rapid burner cycling the re-ignition of the burner can be delayed between 30 seconds and 3 minutes.
15.7 Operational Adjustments SETTINGS The boiler is delivered with all dip switches set to the OFF position with the exception of B2 which is set to the ON position (Fig. 15.6). The maximum heating power can be adjusted by turning the potentiometer (P1) between the Min and Max position. To do this it is first necessary to open the electrical box and proceed as follows: Switch off the external power supply, remove the front panel (Section 18.2.1 and 18.2.2), Open the box by pressing the tab P (Fig. 15.
15.8 Combustion Analysis The boiler is designed to make it easy to analyse the combustion by-products. Using the specially designed test points, readings can be taken on the temperature of the combustion by-products and of the combustion air, as well as of the concentrations of O2 and CO2, etc. The best maximum-power test conditions for the heating system are obtained by turning the Selector Knob 25 (Section 15.4) to central heating only and turning the C.H. temperature control knob 27 to maximum. 15.
16. Gas Adjustments When converting to a gas different from the one for which the boiler is equipped, you should replace the parts delivered with the conversion kit, and make the gas valve adjustments as described below: Setting the minimum and the maximum power of the boiler Check that the supply pressure and dynamic pressure to the gas valve is a minimum of 20 mbar for natural gas. To do this, loosen the screw “A”. FIG. 16.
Once the gas pressure is set turn off the boiler and reconnect the detection electrode. NB.: It may be necessary to reset the flame failure reset a number of times during this operation. Genus 30 Plus Remove the pipe from the test point and tighten the screw “C” to the pressure test point in order to seal off the gas. Carefully check the pressure test points for gas leaks (valve inlet and outlet), reconnect the compensation pipe D1.
17. Maintenance It is recommended that the following checks be made on the boiler at least once a year: 1 - Check the seals for the water connections; replacement of any faulty seals. 2 - Check the gas seals; replacement of any faulty gas seals. 3 - Visual check of the entire unit. 4 - Visual check of the combustion process and cleaning of the burners if needed. 5 - If called for by check no. 3, dismantling and cleaning of the combustion chamber. 6 - If called for by check no.
18. Servicing Instructions A To ensure efficient safe operation, it is recommended that the boiler is serviced annually by a competent person. Before starting any servicing work, ensure both the gas and electrical supplies to the boiler are isolated and the boiler is cool. Before and after servicing, a combustion analysis should be made via the flue sampling point (please refer to Section 15.8). After servicing, preliminary electrical system checks must be carried out to ensure electrical safety (i.e.
18.3 Access to the Control System 18.3.1 Removing the main P.C.B. 18.3.2 Removing the display P.C.B. 1. Isolate electricity and carry out step 18.2.1 ; 2. Open the control box by pushing on the 2 right clips “B” (see Fig. 18.6 ) ; 3. Push on the pressure gauge to disengage it (see Fig. 18.7) ; 4. Disconnect all the connectors on the P.C.B. ; 5. Remove the T20 screw in the middle of the P.C.B. , then pull the card toward you (see Fig.18.8 and Fig 18.9) ; 6. Reassemble in reverse order. B 1.
18.3.3 Removing the fuses 1. 2. 3. 4. 5. 18.3.4 Removing the time clock Carry out step 18.2.1 ; Open the electrical box as in step 18.3.1 Fig.18. 6 Remove the fuse box cover “C” (see Fig. 18.14); Pull out the fuse (see Fig. 18.15); Reassemble in reverse order. Carry out step 18.2.1 ; Open the electrical box as in step 18.3.1 Fig. 18.6; Disconnect the programmer plug (see Fig. 18.16); Push on the two clips to remove the programmer (see Fig. 18.17); 5. Reassemble in reverse order. 1. 2. 3. 4. C Fig. 18.
18.4 Access to the Sealed Chamber 18.4.1 Removing the sealed chamber front panel 18.4.3 Removing the burner 1. Carry out step 18.2.1; 2. Unscrew the six self tapping screws “D” to release the sealed chamber front panel and lift clear (see Fig. 18.18); 3. Reassemble in reverse order. 1. Carry out steps 18.2.1, 18.4.1 and 18.4.2 as above; 2. Disconnect the electrode wires (see Fig. 18.20); 3. Remove the two caps “F” from the bottom of the combustion chamber (see Fig. 18.21, Fig 18.22); 4.
18.4.4 Removing the electrodes 18.4.5 Removing the burner manifold 1. Carry out steps 18.2.1, 18.4.1 and 18.4.2 as above; 2. Disconnect the electrode wires (see Fig. 18.20, Fig 18.21 & 18.22); 1. Carry out steps 18.2.1, 18.2.2, 18.4.1 and 18.4.2; 2. Remove the burner as in step 18.4.3; 3. Remove the 3 screws “ I ” securing the manifold and lift clear (see Fig. 18.28); 4. Reassemble in reverse order positioning the stop lug in the correct postion.(see Fig. 18.29). 3.
18.4.6 Removing the main heat exchanger 1. Carry out steps 18.2.1, and 18.4.1 as above; 2. Drain the boiler (only heating circuit) as in step 18.6.1; 3. Remove the NTC clips “J1” and overheat sensor clip “J2” (see Fig. 18.30 and 18.31); 4. Remove the 2 clips “J3” securing the heat exchanger (see Fig. 18.30 and 18.31); 5. Unscrew the nut “J4” from the tank (see Fig. 18.30 and 18.31); 6. Pull the heat exchanger toward you to remove it (see Fig. 18.32); 7.
18.4.7 Removing the air pressure switch 18.4.8 Removing the fan 1. Carry out steps 18.2.1 and 18.4.1; 2. Disconnect the wire connectors “K1” (see Fig. 18.33); 3. Disconnect the pressure pipes “K2” noting positions (see Fig. 18.33 ); 4. Rotate the the pressure switch clockwise to disengage it (see Fig. 18.34); 5 Reassemble in reverse order ensuring that the wiring is reconnected. 1. Carry out steps 18.2.1 and 18.4.1; 2. Disconnect the wire connectors “L1” and the earth wire “L2” (see Fig. 18.35); 3.
18.5 Access to the Gas Valve 18.5.2 Removing the gas valve Important. ensure gas supply to boiler is turned off 18.5.1 Removing the spark generator 1. Carry out step 18.2.1 ; 2. Open the control box by pushing on the 2 right clips as in step 18.3.1 Fig 18.6; 3. Disconnect electrical connections “N1” on the P.C.B. (see Fig. 18.42) ; 4. Disconnect the electrodes wires “N2” and remove the screw “N3” (see Fig. 18.43) ; 5. Remove the spark generator by pulling it toward the right (see Fig.18.43); 6.
18.6 Access to the Water Circuit Important ! Before any component is removed (except the 3 way valve motor), the boiler must be drained of all water. 18.6.1 Drain down For the primary circuit : 1. Carry out step 18.2.1 ; 2. Open the pressure relief valve (on the pump) (see Fig. 18.47) or the drain screw “P1” on the right hydraulic block (see Fig.18.48); 18.6.2 Removing the 3 way valve 1. Carry out steps 18.2.1 and 18.2.2 ; 2. Remove the clip “Q1” and the three way valve motor (see Fig. 18.50) ; 3.
18.6.3 Removing the heating return filter 18.6.5 Removing the pressure relief valve (3 bar) 1. Unscrew 1/4 ball screw “R” (see Fig. 18.58); 2. Pull it down (see Fig. 18.59); 3. Reassemble in reverse order. 1. Carry out steps 18.2.1 and 18.2.2; 2. Remove the clip securing the valve and disconnect the safety valve outlet (see Fig. 18.62) and pull it toward the left; 3. Disconnect the flexible pipe (see Fig. 18.63); 4. Reassemble in reverse order. Fig. 18.62 R Fig. 18.58 Fig. 18.63 18.6.
18.6.8 Removing the pump 18.6.9 Removing the expansion vessel 1. Carry out step 18.2.1; 2. Open the electrical box cover as in step 18.3.1 Fig. 18.6 3. Remove the pump plug from the control board and earth plug from earth socket “S” (see Fig. 18.66); 4. Remove the pressure relief valve 3 bar as in step 18.6.5; 5. Unscrew the pump nut “T1” and remove the clip “T2” on the pump volute (see Fig. 18.67 & Fig 18.68); 6. Pull the pump toward you and remove the clip “T3” securing the pressure gauge (see Fig. 18.
18.6.10. Removing the overheat thermostat 1. Remove the casing as in step 18.2.1 ; 2. Pull off the thermostat connections. Then remove the thermostat from the pipe by releasing it’s securing clip (see Fig. 18.73). 18.6.13 Removing the flow switch 1. Remove the casing as in step 18.2.1 ; 2. Remove electrical connection and the two clips fixing the flow switch (see Fig. 18.76); 3. Pull down the lower pipe and remove the flow switch; 4.
18.6.14 Removing the D.H.W. expansion vessel 18.6.15 Removing the flow limiter 1. Remove the casing as in step 18.2.1 ; 2. Remove the clip (see Fig. 18.79 & 18.80); 3. Pull up the first tie on the top of the expansion vessel (see Fig. 18.81) ; 4. Pull up the expansion vessel to disengage it from the second tie; 5. Reassemble in reverse order. 1. Carry out steps 18.2.1 and 18.2.2; 2. Remove the two clips and remove the pipe (see Fig. 18.82); 3. Remove the two screws (see Fig. 18.
18.6.16 Removing the tank 1. 2. 3. 4. 5. 6. 7. 8. Remove the casing as in steps 18.2.1 and 18.2.2; Remove all clips, nuts (No. 30 spanner) and eletrical connections (NTC) from the tank (see Fig. 18.86 & 18.87); Remove the clip on the bottom of the boiler to disengage the pipe between the chassis and the thermal valve (see Fig. 18.88); Disconnect the D.H.W expansion vessel from the left hydraulic block (see Fig. 18.80); Remove the two screws V on the left side panel (see Fig. 18.89); Remove the nut (No.
19. FAULT FINDING GUIDE (Flow-chart) It is possible to detect and correct defects by using the standard fault finding diagrams described in this chapter. NOTE: THESE CHECKS ARE NOT EXHAUSTIVE. PRELIMARY CHECKS MAKE SURE THAT: 1 - There is sufficient water in the system 2 - The gas is turned on 3 - The electrical supply is turned on TURN THE SELECTOR KNOB TO IS THE POWER L.E.D. ON? NO 1 - Check the fuses 2 - Check the power supply cable, plug and outlet 3 - Check/replace the power supply to the P.C.B.
A IS THE PUMP RUNNING? NO YES POWER TO THE PUMP? NO YES 1 - Check DHW flowswitch 2 - Check pump cable 3 - Check/replace P.C.B. 1 - Check that the pump is not stuck 2 - Release/replace pump IS THE FAN RUNNING? NO YES POWER TO FAN ? YES NO 1 - Check Air Pressure Switch 2 - Check/replace connection cable 3 - Check/replace P.C.B.
B IS THE AIR PRESSURE SWITCH ACTIVATED? NO CHECK YES ∆P ON TEST PRESSURE INTAKE ∆P ≤ 70 pa IS SPARK GENERATION FOR IGNITION NORMAL? NO YES IS THE BURNER ALIGHT? 1 - Check A.P. switch cable 2 - Check/replace A.P. switch 1 - Check exhaust discharge 2 - Check pipes 3 - Check fan efficiency 1 - Check/replace ignition electrode 2 - Check ignition cable 3 - Check spark generator 4 - Check ignition electrode cable 5 - Check/replace P.C.B. NO 1 - Check power supply of gas valve 2 - Check/replace P.C.B.
C IS THERE STILL A PROBLEM? NO FAULTS YES 1 Drawing D.H.W: When you turn on a tap burner switches off 2 Drawing D.H.W: radiators heat up in summer mode 3 Drawing D.H.W: NORMAL OPERATION insufficient hot water temperature 4 Drawing D.H.W: noisy operation 5 Decrease/increase heating circuit pressure 6 Repeated shutdowns POSSIBILE CAUSES - check temperature probes - faulty D.H.W.
20.
21. Technical Information GENUS 30 PLUS CE Certification Thermal Capacity Thermal Power Efficiency of Nominal Thermal Capacity Efficiency at 30% of Nominal Thermal Capacity Residual Discharge Head Consumption at Nominal Capacity (G20-G25) (15°C, 1013 mbar) (G30-G31) Temp. of Exhaust Fumes at Nominal Capacity with Methane CO2 Content Nox CO Content Minimum Ambient Temperature Heating Temperature (approx) Temperature & Pressure Relief Valve Setting Stored D.H.W. Cylinder Capacity Stored D.H.W.
