Rinnai 32e & HD70e Service Manual in PDF format
Contents
1. Solenoid valve 19 Check gas valves 3 8 and or 9 F3 1 D 7l circuit error Unit does not operate Flame rod 19 Check flame rod 4 8 Ay circuit error 12 Unit does not operate Appliance 1 Check power cord J7 does not plugged in and supply operate at all turned on No display on 2 Check power supply 12 J7 the remote voltage controllers if 3 Check electrical fuse 13 fitted 4 Check transformer 14 7 A D 5 Check gas valves 3 a 3 d 8 and or 9 F5 It D 1 6 Check sparker unit 2 4 Jg 7 Check earth leads and 5 J7 PCB and connections power supply lead 8 Check for short circuits 9 Check remote 16 H 06 controller s if fitted No 1 Check water flow sensor 8 3 combustion 2 Check flame rod 4 99 despite tte 3 Check heat exchanger 10 6 11 control indicating that outlet thermistor combustion as 4 Check hot water outlet 11 6 E 02 occuring if thermistor feni te 5 Check combustion fan 1 5 C 5 and 9 controller s 6 Check the sparker unit 2 4 Jg fitted 7 Check gas valves 3 a 3 d 8 and or 9 Ij D I 8 Check thermal fuse 6 11 Fi 9 Check overheat switch 7 11 F5 IMPORTANT If thermal fuse or overheat switch were faulty check heater for damage b confirm Type and Combustion dip switch settings confirm test point pressure Combustion 1 Check gas supply stops d2. 45 8 Removal of the Gas Inlet Solenoids and Flame Rod 46 9 Removal of the Gas Control a See PRG Ree NUUS 46 10 Removal of the Heat 47 11 Removal of the Thermal Fuse and 47 Unless otherwise stated re assembly is the reverse of dismantling Infinity 32e and HD70e 43 Issue 1 IMPORTANT For some areas of dismantling you may need to isolate any or all of the following Tsolate gas supply Disconnect electrical supply from wall socket Isolate water supply Drain all water from appliance 1 Removal of the Front Panel a Remove four 4 screws 2 Removal of the PCB Unit a Remove the front panel Refer Item 1 b Remove two 2 PCB unit fixing screws and pull out forward 3 Removal of the Water Flow Sensor Servo and Bypass Servo a Remove the front panel Refer Item 1 b Remove two 2 screws and locking plates located on the water supply pipe and bypass pipe Pull bypass pipe and water supply pipe forward to clear servo valves Ensure O rings are not lost or damamged Removal of the Bypass Servo c Remove two 2 screws from the water flow servo body and pull the bypass servo out forwards Ensure O rings are not lost or damamged Infinity 32e and HD70e 44 Issue 1 Removal of the Water Flow S
3. Infinity 32e and HD70e Maintenance Monitor Error History Provides accumulated number of startups combustion time history of operational faults and Component and readout of electrical values Circuit Check whilst unit operational Procedures page 37 lt q pe Detailed information on how to check all components page 26 Dismantling for Service Detailed information on how to remove and replace components page 43 22 Issue 1 Fault Finding Table Code on Fault Flow Action Component Dismantling Wiring Maintenance Controller Chart Check and Item Diagram Monitor Item No Circuit Value Item Items Power 1 Turn off all hot water interruption taps during Press the ON OFF 03 Bathfill Water button on a controller will not flow twice when power restored Combustion 6 18 1 Check blockage of air fan current too intake flue outlet 10 high Unit 2 Check combustion fan 1 5 Ci 5 and 9 operates then stops No ignition 21 17 1 Check gas supply Unit stops 19 2 Check sparker unit 2 4 Jg without flame 3 Check gas valves 3 8 and or 9 F5 It D 1gniting Flame Failure 21 18 1 Check gas supply Earth Leakage 19 2 Check flame rod 4 3 Check earth wire lead 5 J PCB 12 Power Supply Lead 4 Check
4. ences AG EM SU pA EE SUN HI eee 19 S esse bo oM RE 20 enn ae eso et nara hee nore eet 22 15 Component Circuit Value Table opi rtt Ot ter ettet oie 25 16 Component and Circuit eet pute me desee tenuto reed 26 17 Maintenance Monitor Error History 37 18 Gas Pressure Setting Procedure eO e t pee n e eiue tue 39 19 Gas Conversion Procedure aeter pi netten es bti tuat 41 20 Dismantling for Service nderit 43 21 Exploded Ide Fal code ea aet enin ebore bh eet 49 EUMD ME MP E EE 53 SERVICE CONTACT POINTS eo v hoa hat Pu wir vae detto bet 57 Infinity 32 and HD70e iii Issue 1 Glossary of Terms and Symbols dB A DC AC WFCD FB FF IC kcal h kW LED L min mbar bar OHS PCB CPU POT rpm SV A C POV TE TH Tout Infinity 32e and HD70e sound pressure level in decibels A range direct current alternating current water flow control device feedback information feedforward information Hertz integrated circuit kilocalorie per hour kilowatts light emitting diode Litres per minute milliamps millibars of pressure millimetres gauge pressure overheat switch printed circuit board central processing unit potentiometer revolutions per minute solenoid valve diameter temperature rise above ambient modulating
5. 3 10 Check the burner test point pressure Infinity 32e and HD70e 39 Issue 1 11 Adjust the regulator screw on the modulating valve as required to the pressure below fig 4 Pressure Setting low N G 1 8 mbar Propane 3 5 mbar Low Pressure Regulating Screw 12 Lock the regulating screw on the modulating valve 13 Set the Infinity to Forced High combustion by setting both No 2 and No 3 dipswitches of the bottom SW2 set to ON fig 5 Ensure maximum water flow 14 Check the burner test point pressure 15 Adjust the high pressure Potentiometer POT on the Printed Circuit Board PCB As required to the pressure shown fig 5 Pressure Setting high N G 7 4 mbar Propane 17 6 mbar 16 IMPORTANT Set dip switches No s 2 and 3 on the bottom SW2 set of switches to OFF to return the appliance to Normal combustion 17 Close hot water tap 18 Turn OFF the gas supply and 230V power supply 19 Remove pressure gauge and replace sealing screw 20 Turn ON the gas supply and 230V power supply 21 Operate unit and check for gas leaks at test point 22 Replace the front cover of the appliance Warning DURING PRESSURE TESTING OF THE INSTALLATION ENSURE GAS COCK SITUATED BEFORE UNIT IS SHUT OFF FAILURE TO DO SO MAY RESULT IN SERIOUS DAMAGE TO THE APPLIANCE AND POSSIBLE INJURY Infinity 32e and HD70e 40 Issue 1
6. 5 Issue 1 Water Pressure As seen in the table below a minimum supply pressure of 1 8 bar is required to operate at the rated flow of 32 L min In an actual installation pressure losses in the plumbing system also need to be considered 35 Maximum Water Flow 32L min Water Flow L min 0 0 5 1 0 1 5 2 0 2 5 3 0 Water Supply Pressure Infinity 32e and HD70e 6 Issue 1 4 Dimensions Infinity 32e and HD70e 7 Issue 1 5 Installation External Wall Installation Hot Water Inlet Valve Pipe Cover Gas Important Refer to the current versions of the standards and regulations for installation requirements VW Infinity 32e and HD70e Cold Water Inlet Valve Gas 61 Cold S Hot 115 Cable Connection Issue 1 6 Remote Controls Remote Controls Remote Controllers are an optional extra Standard and Deluxe controllers can be fitted Standard controllers allow temperature selection only Deluxe controllers have temperature selection bath fill and voice prompting functions For detailed information regarding controller operation refer to the How to use your water Eg o heater booklet supplied with the appliance Other manufacturers controllers are O DP NOT compatible with this appliance 91 1 Standard Controller Model 91 Up to 4 Standard Controllers can be
7. e Note Only alter gas type positions when Combustion converting from one gas type to another NO For gas conversion instructions refer to p BEN ae Normal Combustion EH e off on SW EM rcu Forced Low Combustion mA off on 542 ERE BM uer Forced High Combustion Computer Programming off on SW2 lt W Switch is always in OFF position for Infinity 32e and HD 70e N Infinity 32 HD70e 20 Issue 1 Fixed Temperatures With or Without Remote Controllers 40 43 50 55 60 65 75 Without Remote Controllers Only 85 C Infinity 32e and HD70e 2l Issue 1 14 Fault Finding CAUTION 1 If there is a fault with the appliance and controllers are installed a numerical fault code may appear on the digital display controller If controllers are not installed one may be fitted to find out the fault code Fault finding without controllers and thus fault codes is possible but more time consuming To diagnose and rectify faults the Fault Finding Table is used as illustrated below Fault Finding Table Describes possible faults and error codes page 23 Operational Flow Chart page 14 Component Circuit Value Table Summarises running and standby electrical values for all components page 25 Wiring Diagram page 19
8. fan NO control Flame current abnormal P 12 flashing cp YRS Thermal fuse activated 14 flashing L Input down operation Outgoing A 16 flashing gt Safety devi 1 No gt afety device norma 7 i Control circuit short I 12 flashing I YES B Outgoing thermistor faulty 32 flashing gt HEX outgoing thermistor faulty gt 33 flashing L 5 HEX outgoing temp gt 95 C YES Modulating valve faulty I 52 flashing Y Combustion tati ombustion fan rotation Main solenoid valve OFF P 61 flashing I abnormal Solenoid valve 1 OFF i ircui 71 flashin Solenoid valve 2 OFF Solenoid valve circuit faulty P g L Solenoid valve 3 OFF i 10 flashin Modulating valve OFF gt Combustion faulty P 5 Combustion indicator OFF y Combustion fan OFF after 65 seconds p HEX outgoing temp lt 60 C Infinity 32e and HD70e 15 1 9 Operation Principles Spark Electrode Heat Exchanger Flame Rod Flue Outlet Heat Exchanger ue Outle Outgoing Thermistor A OverHeat Switch RNC UE Changeover Solenoid Valve SV1 Sparker P IN J Changeover Solenoid Valve SV2 TANT a Combustion Fan Changeover Solenoid Valve SV3 Water Flow Modulating Valve Control Device By pass Flow Control Device Remote Control Frost Sensing
9. will not be achieved Infinity 32e and HD70e 2 Issue 1 Sensors and Safety Devices Heat Exchanger Thermistor Measures hot water temperature at heat exchanger outlet If water temperature reaches a predetermined limit gas supply is stopped Hot Water Delivery Thermistor Measures hot water temperature at the outlet valve i e the mixed temperature Flame Rod Monitors combustion characteristics inside the combustion chamber If the flame fails gas supply is stopped e Overheat Switch Situated on the heat exchanger gas supply is stopped when water temperature reaches 97 C for a number of seconds e Fusible Link Situated on the heat exchanger electrical power supply is stopped if the temperature exceeds 129 C Water Pressure Relief Valve Safeguards the water circuit against excessive inlet pressure Opens at 21 0 bar closes at 15 0 bar Electrical Fuse 3A glass fuse prevents against over current Surge Protector prevents against over current Boil Dry Prevention If water flow sensor detects no flow gas supply is stopped Combustion Fan Speed Sensor In case of combustion fan defect no rotation of fan gas supply is stopped Temperature Cutout If the delivered hot water temperature rises above the required delivery temperature for a number of seconds the gas supply is stopped Combustion Specifications Gas Type Injector Nominal TPP mbar Gas Input kW Size
10. 17 Issue 1 11 Time Charts Normal Combustion INSERT POWER PLUG IN SOCKET SW FLAME TAP SW ON MAX CLOSED OFF SS SESE CLT SIR WE PRESS CRU BRE WATER FLOW SENSOR VILL LEME DE EE BY PASS CONTROL DEVICE Vir 22 LLM LLL LLL LLnL kL 0 1SEC 65SEC POST PURGE Yer Ml DAM LL K VLD 2 EE A BS RA ULL OO saen s Sd HH o 0222222 1j pone 000 ee 222 OOE o 1 7 INDICATOR LLL EEE pera TTT WEEE Miss Ignition Flame Failure IGNITION MISS FLAME FAILURE COMBUST JON FLAME SEQUENCE CLOSED FAILURE WATER FLOW SENSOR LL 2 A 77 UL LL m C UR AUS URGE 2 Wl 2777 A 222 ING SOLENOID Sa 7 7 WE Um ec msi ee eem Lm HEAT EXCHANGER THERMISTOR EMT NEUE LM le po INDICATOR 777 IEEE 222222 pigra 7777707 11 FLASHING Abnormal Pre Purge Alr Supply Exhaust Blockage INDICATOR DIGITAL
11. NB When the maintenance information error history is shown use only one controller If two or more remote controls are used at the same time it may not operate correctly To display Maintenance Information 16 With the controller in the OFF position press the Water Maintenance Temperature DOWN Cooler button while holding the ON Monitor Code OFF button to activate the maintenance monitor Press the ON OFF button a second time to set the controller in the ON mode This feature can now be used with the appliance in operation 17 The maintenance number will be shown in the Water Temperature RD Maintenance Monitor Data 18 Data will be shown in the Clock display 19 To select the required maintenance number press the Water Temperature UP and DOWN buttons Note Infinity 32e and HD70e use Maintenance Numbers 1 12 Display Monitor Contents No Contents Units Data Range 01 Water flow sensor recognition flow 0 1L min 0 400 Example 123 12 3L min 02 J Hot water Outlet thermistor temperature oc 0 999 Example 20 20 C 03 Hot water combustion time 100 hours 000 999 Example 6 600 hours 04 Hot water operation frequency 100 0 999 Example 6 600 Operations 05 Hot water fan frequency Hz pulses sec 0 999 Note 1 Note 1 Fan Frequency rpm Conversion rpm Hz x15 06 Remote control connection none 0 or 1 Note 2 Note 2
12. Switch Surge Protector Outgoing Water Temp Thermistor LP Anti Frost Heater 230 ZA Water Filter Relief Valve and Drain Main Solenoid Valve 9 0 Water Water Hot Water Operation Ignition Activate controllers if fitted and open the hot water tap for full details regarding operation of controllers refer to the How To Use Your Water Heater booklet When water flows through the unit the water flow sensor rotates and sends an electrical pulse signal to the Printed Circuit Board PCB This signal is proportional to the water flow rate The PCB sends electrical current to the combustion fan motor causing it to turn The fan motor sends an electrical pulse signal to the PCB If fan rotation is OK the main solenoid and changeover solenoid valves open as required the spark generator activates and the spark electrode ignites the burner Water Temperature Flow Control Volume Control The PCB will automatically control operation of the internal components to achieve the programmed temperature When a high temperature rise is required the PCB may cause the Water Flow Servo to close partially resulting in a lower flow rate to achieve the programmed temperature This is a necessary operational feature of the unit When operating in Bath Fill mode the signal from the water flow sensor is also used by the PCB to compute the volume of water that has been passed through the unit at any instant whilst the
13. bath is filling Shut Down When operating in Bath Fill mode the PCB causes the Water Flow Servo to close when the programmed Bath Fill volume has passed through the unit Alternatively flow is stopped when the user closes the hot water tap When water flow stops the water flow sensor stops rotating and the pulse signal to the PCB stops The PCB then causes the main solenoid and solenoid valves to close and the burner is extinguished The combustion fan will continue to operate for some time to purge the combustion chamber Infinity 32e and HD70e 16 Issue 1 10 Main Components 1 Printer Circuit Board The Printed Circuit Board controls all operational functions including Air Supply Control Gas Control Water Flow Measurement Water Flow Control Combustion System and all sensors and safety devices 2 Gas Flow Control During normal operation the PCB keeps the main solenoid valve open whilst there 15 flow through the unit and the burner needs to be lit Gas flow rate 15 controlled by the modulating valve assembly and three changeover solenoid valves to always ensure constant outlet water temperature regardless of flow rate or incoming water temperature The modulating valve is electronically controlled by the PCB using signals from the water flow sensor water flow control device bypass flow control device water temperature thermistors and combustion fan speed sensor The modulating valve directs gas to the thre
14. mm High Low High 1 05 Natural 1 8 7 4 5 6 69 1 65 Propane 0 65 3 5 17 6 5 6 69 0 95 The TPP is measured with the cover off the appliance at the regulator test point with supply pressures of 20 mbar NG and 37 mbar Propane Infinity 32e and HD70e 3 Issue 1 3 Water Flow Rates and Pressures Table 1 shows unmixed and mixed water flow rates and approximate gas consumptions for various temperature rises The unmixed flow rates are the flow rates available at the given temperature rise directly at the outlet of the water heater The mixed water flow rates are available at the given temperature rise by mixing hot water from the outlet of the water heater with cold water from the mains supply Water Flows can also be calculated by the following formula M 60x Q CxAT Where M Water flow rate in litres minute If M is lt to 32 the water is unmixed the entire flow goes through the water heater If M gt 32 the hot water from the unit is mixed with cold water Q Heat energy available in kW 56kW for the Infinity 32e and 70e C Specific heat of water 4 2KJ Kg C This does not change for the purpose of this calculation A T Temperature rise required C Example What is the flow rate available with an incoming water temperature of 10 C and a required temperature of 20 C T 20 10 10 C Q 56 C 42 M 60 x 56 4 2 x 10 80 l min Since 80 is greater than 32
15. normal YES Water flow control device fully open 3 Bypass flow control device fully open Remote control normal Hot water temp YES fixed temp C ON OFF switch ON 7 y ON OFF indicator ON 4 y lt Hot water tap open D Water flow sensor ON 2 7 L min or more NO Set HW temp 50 C or more Water flow control device fully open Bypass flow control device fully open A ON OFF indicator OFF A ON OFF switch OFF A Error code indicator OFF A Water flow sensor OFF A E Hot water tap closed gt 4 Combustion fan OFF Bypass control closed 5 Combustion fan ON Fan rotaion detected normal Initial check normal a Sparker ON Fan revolves for ignition Main solenoid valve ON Solenoid valve 1 ON X Modulating valve ON AL cont next page Infinity 32e and HD70e cont next page 14 after 5 seconds A 9 Combustion fan rotation A abnormal 12 5 secs after a 61 flashing Air supply and combustion air 10 flashi gt duct blocked ana Control circuit shor
16. over the available range of flow rates The water flow and bypass valves are a combined assembly on the cold water inlet of the appliance 4 Air Supply Control Air for combustion is supplied by a centrifugal fan driven by a variable speed DC motor The voltage to the motor is determined by the PCB based on water flow delivered water temperature and programmed water temperature The actual fan speed is monitored by a magnetic pulse counter This counter emits a signal to the PCB From the voltage supplied to the DC motor and the fan speed signal the PCB determines whether an error condition exists with the fan 5 Combustion System The combustion chamber 1s housed within the heat exchanger assembly and comprises A three chamber aluminium alloy manifold with a total of 44 integral injectors arranged in two rows of twenty two The middle chamber houses eight injectors the left chamber twelve and the right chamber twenty four injectors Gas flow to each chamber is controlled by an electronic solenoid valve refer Gas Flow Control above A burner assembly comprising twenty two identical modular stainless steel bunsen burners secured by an aluminised steel framework The manifold is attached to the front of the burner module Each bunsen burner is supplied by two injectors A combustion chamber Integrated into the combustion chamber front panel are the flame rod and two ignition electrodes Infinity 32e and HD70e
17. this flow rate is mixed This result corresponds with the value in Table 1 Infinity 32e and HD70e 4 Issue 1 Table 1 Approximate Water Flows and Gas Consumption Rinnai Infinity 32e and 70e Temperature 5 10 15 Rise C L min L hr kW L min L hr kW L min L hr RW thru unit 32 1920 13 9 32 1920 27 8 32 1920 41 7 maximum 160 9600 69 80 4800 69 53 3200 69 Temperature 20 25 30 Rise C L min L hr kW L min L hr kW L min L hr kW thru unit 32 1920 55 6 32 1920 69 26 5 1589 69 maximum 40 2400 69 32 1920 69 26 5 1589 69 Temperature 35 40 45 Rise C L min L hr kW L min L hr kW L min L hr kW thru unit 22 7 1362 69 19 9 1191 69 17 7 1059 69 Temperature 50 55 60 Rise C L min L hr kW I min L hr kW I min L hr kW thru unit 15 9 953 69 14 4 867 69 13 2 794 69 Temperature 65 70 75 Rise C L min L hr kW L min L hr kW L min L hr kW thru unit 12 2 733 69 11 3 681 69 10 6 635 69 The flow listed as thru unit assumes that the demand required is through the heater and is the amount of water and the gas used to raise the temperature of the water by that many degrees only The listed Maximum is how much mixed water can be raised by that many degrees by heating the water through the unit to maximum capacity and mixing with cold until the necessary change in temperature is reached Infinity 32e and HD70e
18. valve thermal efficiency thermistor temperature of incoming water temperature of outgoing water Issue 1 1 Introduction The Rinnai V Series hot water units represents the latest technology in continuous flow temperature controlled hot water Features e The Infinity 32 and HD70e NEVER RUNS OUT of hot water Whilst electricity water and gas supplies are connected hot water is available whenever hot water taps are open Built into the main micro processor is the facility to LIMIT THE MAXIMUM TEMPERATURE of the hot water supplied The water temperature may be limited to various maximum temperatures This is particularly useful when the hot water unit is installed where young children or the infirm may be using the hot water The Infinity 32e is delivered with a maximum preset temperature of 55 degree C and 65 C for the Heavy Duty 70e If required the temperature limits can be changed by a service technician For further information please contact Rinnai UK The Infinity is a power flued appliance It is COMPACT saving both floor and wall space The temperature of outgoing hot water is CONSTANTLY MONITORED by a BUILT IN SENSOR If the temperature of the outgoing hot water rises to more than 3 C above the selected temperature shown on the Digital Monitor or the pre set limit when Remote Controls are not fitted the burner will automatically go out The burner will ignite again once the outgoing hot water temperature fall
19. 0 d o a 0 o 2 lt gt gt 2 2 2 2 oio zz a o o gt c N a Q Az X o wImlololololololololsle I I T 0 m 5 9999 1717121 12 7 gt 2 a m 2 2 lt gt 2 m m 77 2 miu N 67 4 m a eg 0 0 a 5 a 8 9 5 lt I a w w Qo 9 2 E Ww o 9 2 HARNESS Wire Transformer O RING Test Point Nipple 520 300 010 wes COVER Front PCB BH43 755 SC POWER LEAD UK SPARKER ASSY 261 014 000 707 TRANSFORMER ASSY Small 708 HEATER A Anti Frost ASSY U234 0083 709 CLIP Anti Frost Heater A circular AUT95 75X01 711 HEATER B Anti Frost ASSY 712 CLIP Anti frost Heater square au124 618x01 713 OVERHEAT SWITCH 714 FUSIBLE LINK ASSY fuzit eroxon 715 CLIPS Fusible Link 80531 1 716 BH45 650X01 Infinity 32e and HD70e 54 Issue 1 717 718 719 720 800 801 802 803 804 805 806 807 808 809 811 812 888 889 RETANERTremisor lt TEE po scREW 22 screw ScREW serw E SCREW _ Thermistor CUS
20. 19 Gas Conversion Procedure AG 1 Close main gas valve Turn power OFF disconnect the power cord 2 Remove front cover 4 screws 3 Remove manifold complete assembly 7 screws installation 4 Replace the manifold complete assembly and the packing 7 screws Note Do not loose or damage the O ring when reassembling Ensure connections for the solenoid and sparker lead are made properly Infinity 32e and HD70e 4 Issue 1 5 Change over the gas conversion switches 1 4 on the PCB unit 6 Reset Gas pressurs as per instructions in 18 S Gas Pressure Setting Procedure page 39 1 2 Gas type dip switches LPG NG ON ON OMe B 3 Infinity 32e and HD70e 42 Issue 1 20 Dismantling for Service CAUTION 1 230 volt potential exposure Isolate the appliance and confirm with a multimeter Item Page 1 Removal ofthe Front 44 2 Removal ofthe PCB ates Ge dn ees cows aeee 44 3 Removal of the Water Flow Sensor Servo and Bypass Servo 44 4 Removal ofthe Sparkers 45 5 Removal of the Combustion 45 6 Removal of the Hot Water Outlet amp Heat Exchanger Outlet Thermistors 45 7 Removal of the Transformers
21. CB Faulty Replace Overheat Switch Note If Thermal fuse or Overheat Switch were faulty a Check heater for damage b Confirm gas type and combustion dipswitch settings c Confirm test point pressure 8 Water Flow Sensor L ef gt te IS f Relay Connector E Measure voltage between Red Black of relay connector Normal DC 11 13V If normal proceed to b Faulty Replace PCB b Measure voltage between Yellow Black of relay connector Normal DC 4 7V If normal proceed to 2 Faulty Replace water flow sensor Note For controller readout of water flow whilst operational refer maintenance monitor chapter 17 No 1 Infinity 32e and HD70e 30 Issue 1 9 Water Flow Servo Circuit P Relay Connector a Disconnect relay connector B2 and measure resistance between Red and Blue of Water Flow Servo Normal 10 30 2 If normal proceed to b Faulty Replace Water Flow Servo and Water Flow Sensor b Disconnect relay connector and measure voltage between Orange and Grey on PCB unit side Normal DC11 13V If normal proceed to c Faulty Replace PCB unit c Measure voltage between Brown and Grey with relay connector connected with no water flowing water flow servo fully open Normal DC4 6V Faulty Replace Water Flow Servo with Water Flow Servo d M
22. MONITOR 61 OR 10 FLASHING Infinity 32e and HD70e 18 Issue 1 12 Wiring Diagram A 0 vfi TU RUNE COLOR CODING TEMP R WATER M THERMAL FUSE THERMISTOR A R HEAT EXCHANGER O R U R 1 R DIP SWITCH OVERHEAT OS Rw D S25 MODULATING i Temperature Control 6 i Bl ue DIP SWITCH FLAMEROD vlo oler pe Y Yto Br wW ses CONTROL W X SERVO R LI B Br r NS BAEVA SOLENOID VALVE 3 Y WATER FLOW 9 i CONTROL SERVO 86 SOLENOID VALVE 2 5 COMBUSTION k FAN MOTOR a SOLENOID VALVE 1 SEE 5 8 46 MAIN SOLENOID VALVE PN SPARK Gy ELECTRODE SPARK ENERATOR dia iin TRANSFORMER Gr Y G ww PROTECTOR ANTHFROST HEATER a gir E FROST SENSING YY YY ES 8 d 8 BBr ANTI FROST HEATER is GND AC 230V Infinity 32e and HD70e 19 Issue 1 13 Dip Switch Settings WARNING Dip Switch settings must only be changed by an authorised person Dip Switches explained off on LEGEND T SS Gas Type black section indicates position of switch off off Temperature mm off on SW 2 4 Computer Programming Combustion forced high low 9S vp EZ Dip Switches Gas Type LP off on Swi Natural on sw 1 OFF 1 ON a 2 OFF D 2 OFF N gt ES
23. Measure voltage between Orange and Black of Solenoid Valve connector Normal DC80 100V If normal proceed to Thermal fuse Circuit Faulty Replace PCB Infinity 32e and HD70e LT Issue 1 3d Valve Circuit Modulating Valve Connector F y ES If normal proceed to b a Disconnect Solenoid connector measure resistance between Yellow and Black Normal 1 8 2 2 Faulty Replace Solenoid Valve 3 b Measure voltage between Yellow and Black of SV connector Normal DC80 100V If normal proceed to Modulating valve circuit Faulty Replace PCB c Disconnect Modulating Valve fasten terminal and measure resistance between terminals Normal 70 90 If normal proceed to b Faulty Replace Modulating Valve d Measure voltage between Orange and Orange of Modulating Valve fasten terminal Normal DC1 0 25V If normal proceed to c Faulty Replace PCB e Check the gas secondary pressure change when set temperature on the remote control changes from 37 to 55 C Normal If secondary pressure changes go to Water Flow Servo Circuit Faulty Replace Modulating Valve Infinity 32e and HD70e Issue 1 4 Flame Rod Circuit Flame Rod Terminal Check flame rod Disconnect flame rod terminal and re operate 72 indicated Proceed to 3 72 is not indicated check for electrical leaks from the flame rod Measu
24. RK MUST BE CARRIED OUT BY AN AUTHORISED PERSON DO NOT TEST FOR GAS ESCAPES WITH AN OPEN FLAME This manual has been published by Rinnai U K Technical Services While many individuals have contributed to this publication it will be successful only if you the reader and customer find it useful We would like to extend an invitation to users of this manual to make contact with us as your feedback and suggestions are valuable resources for us to include as improvements Rinnai are constantly working toward supply improved appliances as well as information and specifications may be subject to alteration at any time Issue N91 Infinity 32e and HD70e Table of Contents Glossary of Terms and Symbols Oh T PERI er aao t tre ale eve eta d iv T TROC OUI A TOI o DR Bnet RD 1 2 DIE CIELO AION Ge 2 3 Water Flow Rates Pressures doner Mira o Cp pede tape 4 4 cova itt pe ED ala 7 T HERUM 8 6 Remote Controls i 9 TOILET 13 Ge OPERATIONAL Flow ii RE Mt oM teat 14 DB Operation Principles ei ptm EO ee 16 T0 Main C OI PONE ls s utc at aber rb endless iei 17 tle Time Charts c et ea Das MEE E et 18 12 WY B
25. Remote Control Connections Bathroom Remote Controls connected Display Additional remote Kitchen remote No 0 0 1 1 Yes SS 07 Water flow servo present recognising positioning None 0 2 Note 3 Infinity 32e and HD70e 37 Issue 1 Note 3 Water Flow Servo Positioning Servo Position Open Centre Closed Display 1 9 2 08 Inlet water temperature oc 0 999 PCB recognition value Example 25 25 C 09 Hot water fan current flow value 10 mA 0 999 Example 6 x 10 60 mA 10 Bath fill amount this counts the litres during bath Litres 0 999 fill operation 11 Heat exchanger exit thermistor temperature Exam oc 0 999 ple 55 55 C 12 Bypass servo present recognition positioning Degrees 0 500 Example 0 Closed 250 Half open 500 Open To return to normal operation Press the ON OFF button again while holding down the Water Temperature DOWN Cooler button Error History Error History To Display Error Memory History Sequence This feature will show the last 10 faults in sequence 1 Turn off at the ON OFF button This can be done during operation 2 Press the ON OFF button while holding the Water Temperature Error History UP Hotter button Code The Sequence will be shown in the Water Temperature display Error Code will be shown in the Clock display See service Manual for e
26. Rinnai INFINITY 32e and HD70e SERVICE MANUAL Infinity High Capacity Continuous Flow Gas Hot Water System Infinity 32e and HD70e The Rinnai Infinity 32e and Heavy Duty 70e water heater when correctly installed comply with the requirements of the United Kingdom Water Regula tions Byelaws Scotland These Products can be found listed in the Water Fittings and Materials Directory dis The Rinnai Infinity 32 water heater is Marked for UK and Ireland as allowed by Technigas of Belgium Certificate number E0715 5344 ID number 0461BO0715 De Date of Issue 14 July 2003 Quality System Standard ISO 9001 1994 The Design Development and Manufacture of Gas Water Heating Appliances done under Rinnai s Quality Management System is certified under the Quality Management System Standard ISO 9001 Registration Number JQ0003D Registered since February 1994 Certified by Japan Gas Appliances Inspection Association Infinity 32e and HD70e Produced by Rinnai Technical Services Department August 2004 Issue 1 No portion or part of this manual may be copied without prior permission from Rinnai U K Rinnai U K reserves the right to make modifications and change specifications without notice WARNING Failure to comply with these instructions may result in serious personal injury or damage to the appliance ALL WIRING INSIDE THIS APPLIANCE MAY BE AT 230 VOLTS POTENTIAL ALL SERVICE WO
27. TOMER INSTRUCTION U245 795 INSTALLATION INSTRUCTION U211 1230 Infinity 32 and HD70e 55 Issue 1 5 Infinity 32e and HD70e 56 Issue 1 SERVICE CONTACT POINTS Rinnai Franco Bileci 39 Casa Bileci Triq is Sajf Qormi Malta QRM10 TEL 00 356 99897414 E mail info rinnaimalta com Web www rinnaiuk com Infinity 32e and HD70e
28. apacity Raised 25 3202 7 L min Thermal efficiency Temperature range Kitchen controller MC 37 55 with remote 37 50 Default temperature control 40 43 C 50C 55 60C 65 C 75C 85 C without remote Set by combination of Dip switches on PCB Bathroom controller 37 50 Power supply Appliance AC 230 Volts 50Hz Remote control DC 12 Volts Digital DBA Safety device Remaining flame OHS 97C bi metal switch Water flow control Electronic Water flow sensor flow control amp heat exch By pass flow control Remote son Second bathroom control MC 91 1A or BC 70 2A Remote Controller Cable optional Two core sheathed double insulated flex with min cross sectional area of 0 51 Manifold Electronic Control Note 1 The default factory setting is 55 for Infinity 32e and 65 for 70 The unit can be ordered from Rinnai UK to be pre set to any of the other temperatures listed The unit can be pre set to any of the temperatures listed by a suitably qualified person Controllers are available with default temperatures up to 75 C When fitted with controllers only temperatures not exceeding the default temperatures can be selected When fitted without controllers the unit will deliver water at the default temperature Controllers are not available with 85 C setting Note 2 Unit will operate at lower pressures but the maximum rated flow of 32L min
29. e changeover solenoid valves The three changeover solenoid valves direct gas to each of the three burner banks independantly Any one two or all of the solenoid valves may be open during operation Gas flow is modulated between 5 6 and 69 kW by a combination of the modulating valve and changeover solenoid positions The maximum gas rate 15 predetermined and the appliance cannot be overloaded when correctly installed 3 Water Flow Control Water flow is detected by a turbine coupled to a magnetic pulse generating device The magnetic pulses are detected and counted by the PCB The PCB calculates the exact water flow from the frequency of pulses generated by the turbine as well as the volume of water that has passed through the unit at any instant during Bath Fill operation A minimum flow rate of 2 7l min is required for the burner to ignite Water flow control is achieved through the use of servo driven water flow and bypass valves Both servo motors are controlled by the PCB The Water Flow Valve restricts the flow of water into the heat exchanger assembly if the programmed temperature cannot be achieved Also when the Bath Fill function is activated flow of water is stopped when the bath is full During normal operation cold water from the inlet valve is mixed with hot water from the heat exchanger outlet The Bypass Valve mixes the correct proportion of cold and hot water to ensure accurate hot water delivery temperature
30. easure resistance between both terminals of the sparker Normal gt If not sparking adjust or replace ignition plug Faulty Replace Sparker Infinity 32e and HD70e 26 Issue 1 Solenoid Valve SV Circuit anc d LAO Jo L Connector 1 Check the main solenoid if error indicator 11 is displayed a Disconnect Main Solenoid connector and measure resistance between Pink and Black Normal 1 5 1 9KQ If normal proceed to b Faulty Replace Main Solenoid b Measure voltage between Pink Black of Main Solenoid connector Normal DC80 100V If normal proceed to Solenoid Valve SV Faulty Replace PCB 3b Solenoid Valve 1 SV Circuit Orge AX wc The t xd LA E Connector I Check Solenoid 1 if error indicator 11 is displayed a Disconnect Solenoid 1 connector and measure resistance between Red and Black Normal 1 8 2 2 If normal proceed to b Faulty Replace Solenoid 1 b Measure voltage between Red and Black of Solenoid 1 connector Normal DC80 100V If normal proceed to Solenoid Valve 2 SV gt Circuit Faulty Replace PCB 3c Solenoid Valve 2 SV gt Circuit Tri Connector I a Disconnect Solenoid Valve 2 connector and measure resistance between Orange and Black Normal 1 8 2 2kQ If normal proceed to b Faulty Replace Solenoid Valve 2 b
31. easure voltage between Yellow and Grey with relay connector connected with no water flowing water flow servo fully open Normal DC1 0V Faulty Replace Water Flow Servo and Water Flow Sensor 10 Heat Exchanger Outlet Thermistor Circuit Relay Connector E Check Heat Exchanger Outlet Thermistor if error indicator 33 is displayed Disconnect relay connector E gt and measure resistance between White and White Circuit Break Resistance gt Short circuit Resistance lt 10 If normal proceed to Water Flow Servo Circuit If faulty replace Heat Exchanger Outlet Thermistor Note For controller readout of thermistor temperature whilst operational refer maintenance monitor chapter 17 No 11 Infinity 32e and HD70e 31 Issue 1 11 Water Outlet Thermistor Circuit Relay Connector E Check Hot Water Thermistor if error code 32 is displayed Disconnect relay connector Ej and measure resistance White White When disconnected resistance gt When short circuit resitance gt Normal Check Heat exchanger outlet thermistor Faulty Replace hot water outlet thermistor Normal Temp 159 30 C 45 C 75 C Resistance 12 3 7 0 41 1 6 If normal proceed to Flame Rod circuit Faulty Replace the Hot water Outlet Thermistor Note For controller readout of thermistor temperature whilst ope
32. ervo with Sensor d Remove four 4 screws from water supply connection body and take out the water flow servo with sensor and the water supply connection Ensure O rings are not lost or damamged SCREWS 4 Removal of the Sparkers a Remove front panel Refer Item 1 b Remove one 1 sparker screw unplug high tension leads from spark ignitors and take out the sparker T 4 Cw PARKER 5 Removal of the Combustion Fan a Remove front panel Refer Item 1 b Remove three 3 combustion fan screws pull forward and slide to the side to remove fan Removal of the Hot Water Outlet amp Heat Exchanger Outlet Thermistors a Remove front panel refer Item 1 b Remove two 2 thermistor screws and remove the Hot Water Outlet thermistor HW unplug c Remove two 2 thermistor screws and remove the Heat Exchanger Outlet thermistor HE unplug SCREWS m r 2a THERMISTOR e IT CONNECTOR 7 Removal of the Transformers 230V 110V a Remove front panel Refer Item 1 b Remove PCB unit assembly Refer Item 2 c Remove two 2 transformer screws and pull out forward 2 screws Infinity 32e and HD70e 45 Issue 1 4 Remove transformer installation bracket screw SCREWS Removal of the Gas Inlet Solenoid Flame Rod a Remove front panel 4 screws Refer Item 1 b Remove five 5 combustion screws located on
33. fitted to the appliance They are normally installed in the areas where the majority of hot water is used for example the kitchen bathroom ensuite and laundry 90 Deluxe Kitchen Remote Control MC 70 and BC 70A Deluxe controllers have Kitchen MC 70 2A and Bathroom BC 70 2A versions Kitchen controls are intended for the Kitchen or other convenient area where the majority of hot water is used Bathroom Controllers are intended to be fitted in the bathroom or ensuite and allow the user to have a bath filled to the required level and temperature automatically MC 70 2A BC 70 2A eo Qe 195 128 Lu 3 C cag Up to three Deluxe Controllers can be connected as follows Kitchen Bathroom Ensuite MC70 2A MC70 2A BC70 2A MC70 2A BC70 2A BC70 2A Positioning of Controllers Controllers must be installed in shaded and clean locations They should be fitted out of reach of children suggested height from floor at least 1500 mm Controllers are water resistant however durability is improved when positioned outside the shower recess or at least 400 mm above the highest part of a sink basin or bath Infinity 32e and HD70e 9 Issue 1 Do not install the Controllers Near a heat source such as a cook top stove or oven Heat steam smoke and hot oil may cause damage n direct sunlight Outdoors unless an enclosure is provided which protects the con
34. han 50 C If not repeat Step 1 Note Ifthe kitchen controller is replaced repeat STEP 1 above for the replacement controller Ifthe kitchen controller is swapped with another controller for example the controller fitted in a bathroom repeat STEP 1 for the controller moved from the kitchen to the bathroom Then perform STEP 1 for the controller moved from the bathroom to the kitchen Infinity 32e and HD70e 12 Issue 1 7 Cutaway Diagram Flue Terminal Heat Exchanger Heat Exchanger Outgoing Thermistor Anti Frost Heater Flame Rod Spark Electrode i d Manifold Sparker m Solenoid Valve SV2 a Solenoid Valve SV1 Lo i Solenoid Valve SV3 RI h n e eX EMIL ake Outgoing Thermistor gt j 2 4j KL Transformer 427 Fan Motor Water Outlet Connection 73 Pressure Only Relief Valve Water Flow Sensor and Electro mechanical Water Flow Control Device Fuse GA Water Inlet Connection Infinity 32e and HD70e 13 Gas Connection Over Heat Switch bi metal switch Thermal Fuse Burner PCB Unit Electro mechanical By pass Flow Control Device Main Solenoid Valve Surge Protector Modulating Valve Transformer Power Cord Issue 1 8 Operational Flow Chart E Insert power plug Cause eliminated 4 Remove power plug from socket NO O Safety device
35. ly for the purposes of personal hygiene in an early childhood centre primary or secondary school nursing home or similar facility for young aged sick or disabled persons a Temperature Limiting Device TLD such as a Thermostatic Mixing Valve may be required even if the appliance is set to 50 C or less For these types of applications contact Rinnai UK Infinity 32e and HD70e 10 Issue 1 Connecting Remote Control Cables Do not attempt to connect the remote control cable terminals to the appliance with the power on RISK OF ELECTRICAL SHOCK Connecting One Two Controllers 1 Isolate the power supply 2 Remove the front cover from the Appliance 4 screws fig 1 3 Thread the cable s through the cable access hole at the base of the appliance 4 Connect the spade connectors to the terminals marked Remote Control on the printed circuit board fig 2 Polarity is not important Either wire colour can be connected to either terminal 5 Replace cover of the Appliance Ensure that the screw with the star washer is placed at the bottom right hand corner for earthing purposes Connecting Three Controllers 6 Isolate the power supply 7 Remove the front cover from the Appliance 4 screws fig 1 8 Cutthe spade connectors from 2 of the controller cables to be R VGTEESNTHOLGONNEETION TERMINALS connected to the appliance 4 spade connectors should be cut CABLE CEAMB off a
36. nd discard Connect the wires from these two cables and terminate into two new spade connectors as shown in fig 3 Spade connectors are available from your local electrical component retailer 9 Thread the 3 cables through the cable access hole at the base of the appliance Connect the 4 spade connectors to the terminals marked Remote Control on the printed circuit board fig 2 Polarity is not important Either wire colour can be connected to either terminal 10 Replace cover of the Appliance Ensure that the screw with the star washer 15 placed at the bottom right hand corner for earthing purposes fig 1 CONTRO CARI F fig 2 Connecting Four Standard Controllers New spade connectors 11 Isolate the power supply Aa 12 Remove the front cover from the Appliance 4 screws fig 1 13 Cut the spade connectors from all four controller cables to be connected to the appliance 8 spade connectors should be cut off and discard Connect the wires from two cables and terminate into two new spade connectors as shown in fig 3 Cable wires Cable wires Repeat for the remaining two cables Spade connectors are available from your local electrical component retailer 14 Thread 4 cables through the cable access hole at the base of the appliance Connect the 4 spade connectors to the terminals marked Remote Control on the printed circuit board fig 2 Polarity is not important Either wire colour can be con
37. nected to either terminal 15 Replace cover of the Appliance Ensure that the screw with ae the star washer is placed at the bottom right hand corner for earthing purposes Remote control cables fig 3 Infinity 32e and HD70e 11 Issue 1 MC 91A Controller Programming Question 1 Are four Controllers connected IF YES You will need to activate the fourth controller STEP 1 For the Controller in the KITCHEN only press and hold the ZI Transfer and On Off buttons simultaneously see fig 1 until a is heard approximately 5 seconds STEP 2 Check that the display on ALL FOUR controllers is lit and displaying a temperature when switched If any ONE of the controller displays two dashes see fig 2 in the display repeat STEP 1 This completes the activation procedure Ignore Question 2 Fig 2 IFNO You have three controllers or fewer go to Question 2 Question 2 Does your kitchen controller temperature go above 50 deg C IF YES No further action required IF NO You will need to program the Kitchen controller to enable selection of temperatures higher than 50 C STEP 1 For the controller in the KITCHEN only press and hold the Transfer and On Off buttons simultaneously see fig 1 until a beep is heard approximately 5 seconds STEP 2 When the controller fitted in the KITCHEN 15 switched on it should be possible to select temperatures higher t
38. ont panel 4 screws b Take out the heat exchanger unit Refer to 10 c Remove the thermal fuse Note After replacing install the thermal fuse as in the following diagrams THERMAL FUSE THERMAL FUSE Heat Exchanger Front Infinity 32e and HD70e 47 Issue 1 Heat Exchanger Back d Remove one 1 screw of the bi metal overheat switch Infinity 32e and HD70e 48 Issue 1 21 Exploded Diagram Infinity 32e and HD70e 49 Issue 1 Issue 1 50 Infinity 32e and HD70e Infinity 32e and HD70e 5 Issue 1 Infinity 32 and HD70e 22 Parts List Infinity 32e TY HOLDER Electrode AU168 323 506 149 000 FLAME ROD Electrode AH41 216 230 047 000 Infinity 32e and HD70e 53 Issue 1 water 400 401 402 403 404 405 e z 2 m z o z eo E E 2 2 2 gt z m 72 0 t a ITI A gt lt 7 lt gt z m I EN c T 2 m gt o n lt i eee 406 410 3 4 inch Hot Water Outlet Connectio 411 412 415 416 417 418 419 420 500 501 502 503 504 505 506 507 508 509 510 700 701 702 703 704 705 n 2 lt W lt D n o gt n lt mzs VALVE C Pressure Relief Drain pl NENNEN 20300010 gt 2 2 m 0 A m 2 z m 7
39. outer edge of manifold plate c Remove two high tension leads from spark ignitors Unplug wiring from solenoid coils d Remove two 2 manifold and gas control screws and take out by hand ani IL 4 screws f Remove two 2 burner retaining screws then remove combustion chamber front panel 9 screws g Take out the burner unit DAMPER Removal of the Gas Control a Remove front panel 4 screws Refer Item 1 b Remove the manifold Refer to section 8 a to d c Remove four 4 screws on gas connection inlet and gas control assy and pull out the gas connection Handle O ring carefully SCREWS d Remove one 1 gas control assy screw and pull out gas control assy Infinity 32e and HD70e 46 Issue 1 10 Removal of the Heat Exchanger a Remove front panel 4 screws Refer Item 1 b Remove the PCB Refer Item 2 b c Remove heat exchanger water supply pipe and bypass pipe Refer to 3 d Remove one 1 HEX HW pipe screw and pull the hot water pipe forward Handle O ring carefully screws M e Remove the two 2 screws fixing the manifold and gas control f Remove four 4 heat exchanger unit screws IK SCREWS pe uS g Remove connectors of the fan motor thermal fuse flame rod etc h Pull the heat exchanger unit forward and out 11 Removal of the Thermal Fuse and OHS a Remove fr
40. rational refer maintenance monitor chapter 17 No 2 Disconnect relay connector Ej and measure resistance White White 12 Electrical Fuse Thermal Fuse Check the fuse a Unplug the power plug b Check whether or not the fuse 3A x 2 has blown by measuring the resistance Normal 1 If normal go to step Electrical Fuse 13 Faulty Replace fuse s 3Ax2 Check for a short next time it s turned off Infinity 32e and HD70e y Issue 1 13 Surge Protector a Measure voltage between blue and brown on the connecter J Normal AC 207 264V If normal proceed to b Faulty Check if voltage on the fuse terminal is AC207 264V b Measure voltage between white and white on the J 8 Normal AC207 264V Faulty replace surge protecter unit 14 Transformer Relay Connector A3 Check for the transformer Measure the voltage between red and red on the transmission connector Normal AC90 110V 12 21 Q If normal proceed to b Faulty Check if the voltage on fuse terminals is AC90 110V Connector A b Measure the voltage of the connector A on the PCB Normal Between Brown and Grey AC 30 50 Between Yellow and Grey AC 180 220V If normal proceed to c Faulty Replace transformer c Measure voltage between Green and Green of connector D on PCB Normal AC 12 18V If normal proceed to 4 Faulty Replace tran
41. re resistance between flame rod terminal A and appliance earth Normal gt If normal replace PCB Faulty Replace flame rod a Remove the Flame Rod terminal repeat operation procedure if 72 is displayed again check the Hot water outlet thermistor If 72 is not displayed check current leakage from the Flame Rod b Measure voltage between body earth and Flame Rod terminal A Normal Voltage AC100 160V If normal repalced PCB Faulty Replace Flame Rod c Check if the Flame Rod is securely fitted Normal replace the PCB Faulty Adjust the fitting of the Flame Rod 5 Earth Lead Earth Terminal Confirm the Earth Lead connection 15 secure at round terminal and check for broken or short circuits in the lead If normal check other possible causes for flame failure is gas valve open is the filter blocked etc If faulty tighten the earth lead PCB power cord and surge arrester Infinity 32e and HD70e 29 Issue 1 6 Thermal Fuse Circuit Relay Connector F Check the Thermal Fuse Disconnect relay connector and measure resistance between Red and Red Normal lt 10 If normal replace PCB Faulty Replace Thermal Fuse if after confirming there is no damage to the appliance Overheat Prevention Measure resistance between Overheat Switch terminals F2 Normal lt 1 If normal replace P
42. relay connectors J4 and J and measure resistance between White and WhiteW on heater side water flow servo and HW connection Normal 4080 If normal proceed to b Faulty Replace Valve Heater b Disconnect relay connector and 15 and measure resistance between Yellow and Yellow on each conector on heater side Normal 653 If normal proceed to c Faulty Replace Anti frost Heater B assy Infinity 32e and HD70e 35 Issue 1 c Disconnect relay connector J1 and J3 and measure resistance between Yellow and Yellow on Heat Exchanger Heater side Normal 825 If normal proceed to Frost Sensing Switch 18 Faulty Replace Anti frost Heater A assy Measure when temperature is 4 3 C Note If you cannot get the temperature low enough cool the low temperature sensing switch with ice etc Relay Connector J Disconnect relay connector J2 and measure resistance between Blue and Blue Normal lt 1Q f C If normal check wiring AC230V circuit Faulty Replace Frost Sensing Switch Relay Connector J Infinity 32e and HD70e 36 Issue 1 17 Maintenance Monitor Error History This feature is available where the appliances are connected with a deluxe controller MC70 2A or BC70 2A This will enable service personnel to locate the maintenance history and faulty components with the appliance in operation
43. remote control 15 06 Thermal fuse 19 1 Check thermal fuse 6 11 Fl and or 2 Check overheat switch 7 11 F2 overheat IMPORTANT If thermal fuse or overheat switch were faulty 14 switch a Check heater for damage activated Unit b Confirm Type and Combustion dip switch settings page 20 operates then c Confirm test point pressures page 39 stops Over 19 20 1 Confirm Gas Type and temperature Combustion dip switch warning Unit settings page 20 operates then 2 Confirm test point stops pressure page 39 3 Check gas valves 3 a 3 d 8 and or 9 F5 It D I 16 4 Check water flow sensor 8 3 01 5 Check water flow servo 9 3 07 6 Check heat exchanger 0 6 E 11 outlet temperature thermistor 7 Check hot water outlet 1 6 E 02 temperature thermistor Outlet water 19 Check hot water outlet 1 6 02 32 thermistor thermistor flow Heat 19 Check heat exchanger 0 6 E 11 exchanger thermistor 33 thermistor error Modulating 2 19 Check modulating solenoid 3 9 solenoid valve valve 52 fault Unit stops without flame ignition Combustion 6 18 Check combustion fan 1 5 Ci 05 and 09 61 fan rotation 21 error Water flow 19 Check water flow servo 9 3 07 control device error Water flow is not ad controlled Water temperature too low Infinity 32e and HD70e 23 1
44. rror codes Error History Code Where there are less than total of 9 errors FFF will be displayed in the Clock display To return to normal operation Press the ON OFF button again while holding the Water Temperature UP Hotter button This feature will automatically shut down after 3 minutes Infinity 32e and HD70e 38 Issue 1 18 Gas Pressure Setting Procedure The regulator on the Infinity is electronically controlled and factory pre set Under normal circumstances it does not require adjustment during installation Perform this procedure only if the unit is not operating correctly and all other possible causes for incorrect operation have been eliminated 1 Turn the gas supply 2 Turn 230V power supply 3 Remove the front cover from the appliance 4 Check gas type switches fig 1 are in the correct position top set or SW1 of switches fig 1 5 Attach pressure gauge to burner test point fig 2 6 Turn the gas supply 7 Turn ON 230V power supply 8 Ifremote controllers are fitted turn the unit ON at the kitchen controller select a delivery temperature of 55 C and open a hot water tap fully CAUTION Ensure building occupants do not have access to hot water outlets during this procedure 9 Setthe Infinity to Forced Low combustion by setting No 2 dipswitch of the bottom SW2 set of dip switches EB 2 to ON fig 3 3
45. s below the temperature shown on the Digital Monitor or the pre set limit The burner lights automatically when the hot water tap is opened and goes out when the tap is closed IGNITION IS ELECTRONIC therefore there is not pilot light When the hot water tap is off no gas is used Deluxe or Standard Remote Controllers are available as an optional extra Depending on the models chosen these offer the following additional features Bath fill function Voice Prompting Localised Temperature Control for up to one kitchen and two bathroom controllers Clock Temperatures selected at the controllers are retained in the SYSTEM MEMORY Operating NOISE LEVEL IS VERY LOW ERROR MESSAGES ARE DISPLAYED on the Remote Controllers assisting with service Infinity 32e and HD70e I Issue 1 2 Specifications Type of appliance Temperature controlled continuous flow gas hot water system With without remote controls mounted in kitchen bathroom Forced Fi Infinity 32 Rinnai model number Heavy Duty 70e mund Dimensions S Maximum Minimum Natural gas 69 5 6kW Gas consumption Propane gas 69 5 6 kW Connections Gas connection 3 A inch BSP Cold water connection 3 A4inch BSP Hot water connection 3 4inch BSP Ignition system Direct electronic ignition Electrical consumption Normal 83W Standby 12W With 1 Remote control With Anti frost protection 100 W Hot water c
46. sformer Note The above transformer voltages are meas ured while the appliance is in standby mode not while it is operating Infinity 32e and HD70e 33 Issue 1 15 Bypass Servo Circuit 15 ios mG yl Vy gt NN COS m DA UD 777 d J vA L 2 Relay Connector Bi X a Disconnect relay connector and measure resistance Normal CN Wire Colour Value Br W B O W R WGND If normal proceed to b Faulty Replace PCB b Measure working voltage while relay connector is connected Normal CN Wire Colour Value Br W B O W Y W DC 2 6V R WGND Faulty Replace Bypass Servo 16 Remote Control Remote Control Terminal Hi Check the voltage between the 2 core remote control cable Measure the voltage between terminals on the remote control terminal H Normal DC 11 13V If normal replace the remote control after confirming that the cable hasn t been damaged or shorted Faulty Because normal voltage 15 not given due a short circuit despite the PCB being in normal state check Water Flow Servo circuit If solution is not given from the above replace PCB Infinity 32e and HD70e 2 34 Issue 1 17 Anti frost Heater Circuit iy W gt CLE LSS Relay Connector Js a Disconnect
47. t c 12 flashing False flame sensed I 72 flashing L MP Solenoid valve circuit faulty 9 71 flashing C Modulating valve faulty gt 52 flashing On Outgoing thermistor faulty 32 flashing 0 O HEX outgoing thermistor faulty P 33 flashing e 9 Thermal fuse activated gt 14 flashing gt NER d Overheat switch activated 29 cont next page Issue 1 from previous page from previous page from previous page aU v 2 seconds Max fan revolution Modulating valve OFF A Solenoid valve 3 OFF Solenoid valve 1 OFF Solenoid valve 2 OFF NO Main solenoid valve OFF Solenoid valve 1 OFF Flame detected gt 1uA Main solenoid valve OFF A Modulating valve OFF YES Y Combustion indicator ON Ignition failure lt 2 times 11 flashing y Sparker OFF Sparker OFF Gas modulating control ON Solenoid valve 2 ON after 4 secs Combustion indicator OFF Solenoid valve 3 ON y 15 Water flow control ON A Fan control normal Auto
48. troller against sunlight and dust ingress Against a metal wall unless the wall is earthed in accordance with current regulations Remote Controller Connection Remote controls operate at extra low voltage 12 Volts DC which is supplied from the appliance Controllers are supplied with 15 m of electrical cable The cable wires for connection to the appliance are fitted with spade terminals Extension cables are available from Rinnai Alternatively a two core sheathed double insulated flex with minimum cross sectional area of 0 5 mm can be used Maximum cable length is 50 m For connection refer to the CONNECTING REMOTE CONTROL CABLES section Water Heater and Controller installation configurations Ifthe front cover ofthe appliance contains Max 50 deg C unit install it in accordance with Diagram 1 below Temperature KITCHEN controller optional Temperature LAUNDRY controller optional i Temperature BATHROOM controller optional Temperature ENSUITE controller optional If the front cover of the appliance does NOT contain the above text install it in accordance with Diagram 2 Temperature Temperature Temperature Temperature controller controller controller controller optional optional optional optional BATHROOM LAUNDRY Diagram 2 Not a 50 C Appliance Note TLD Temperature Limiting Device IMPORTANT If the appliance is to deliver water primari
49. uring 2 Check flame rod 4 8 Operation 3 Check earth leads and 5 J PCB and connections power supply lead Cannot adjust 1 Check hot water outlet 11 6 02 the hot water thermistor temperature 2 Check heat exchanger 11 6 02 via the outlet thermistor controller s 3 Check gas valves 3 a 3 d 8 and or 9 l 15 15 only if I controller s fitted 4 Check water flow servo 9 3 B2 07 5 Check bypass servo 15 3 B 12 Anti frost 1 Check anti frost heater 16 Ji 13 J4 15 Jg heater does not components operate 2 Check frost sensing 17 J switch Infinity 32e and HD70e 24 Issue 1 15 Component Circuit Value Table Measurement Point Table Reference Component Normal Value Wire Colour Surge Protection AC207 264V DC11 13V Operate Electricity DC11 13V Control Electricity Water Flow Below DC1V Limiter On Control Device P DC4 6V Limiter Off Below DC1V Limiter On Gy Br Full Close Position DC4 6V Limiter Off Br W By Pass Flow Or W Control Device R a au 15 350 Remote Control Hi Bk Bk DC11 13V a DC11 13V On 2 7L min 30Hz Water Flow Sensor E3 Over 1800 PULSE min DC2 6V Operate Condition Off 2 0L min 20Hz DC4 7V Pulse 17 460Hz Below 1200 PULSE min W Bk DC2 9V Combustion Fan Check Terminal 60 360Hz Over Flame Condition AC1 0 25V Modulating Valve Modulating Valve 70 900 15 Ce 11 4 14 0kQ O
50. utgoing Thermistor 30 C 64 7 8kO W W 45 C 3 6 4 5 Heat Exchanger 60 C 2 2 2 7kQ Outgoing Thermistor 100 C 0 6 0 8kO Thermal Fuse Below 10 Igniter AC90 110V DC80 100V DC80 1007 DC80 400V DC80 100V 1 8 2 2 AC90 110V 12 210 AC12 18V AC30 50V 80 220V 300 5300 Solenoid Valve 2 Solenoid Valve 3 Transformer AC100 160V After Ignition Flame Rod Y BODY EARTH Infinity 32e and HD70e 25 Issue 1 16 Component and Circuit Checks CAUTION 1 1 Combustion Fan Circuit Connector C Check the Motor Check the combustion fan if the error indicator displays 61 Measure voltages between Black and Red of the PCB connector C Normal DC7 45V when fan ON DCOV when fan OFF If normal proceed to check the rotation sensor Faulty Replace PCB Check for the Fan Rotation Sensor a Measure voltages between Black and Yellow of connector C Normal DC10 14V If normal proceed to b Faulty Replace PCB b Measure voltages between Black and White of connector C Normal DC2 9V If normal proceed to Sparker Circuit 2 Faulty Replace Combustion Fan 2 Sparker Circuit lt 9 o SSS lt M PNE a Measure voltage between Grey and Black of connector Normal AC90 110V If normal proceed to b Faulty Replace PCB b Disconnect connector J6 and m
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