Rinnai HD250E REU-V3232WC Service Manual Download Page 11 | Manualshive

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Infinity REU-V3232W / HD250E REU-V3232WC

- 6 -

Issue 1 - 8/09/03 ©Rinnai

Water Pressure

As seen in the table below a minimum supply pressure of 180 kPa 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.

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Summary of Contents for HD250E REU-V3232WC

Page 1: ...INFINITY REU V3232W HD250E REU V3232WC Infinity High Capacity Continuous Flow Gas Hot Water System SERVICE MANUAL...

Page 2: ...r of The Australian Gas Association All of our products are AGA tested and approved Distributed and serviced in Australia under a Quality System certified as complying with ISO 9002 by Quality Assuran...

Page 3: ...eserves the right to make modifications and change specifications without notice Failure to comply with these instructions may result in serious personal injury or damage to the appliance This manual...

Page 4: ...y Diagram 13 8 Operational Flow Chart 14 9 Operation Principles 16 10 Main Components 17 11 Time Charts 18 12 Wiring Diagram 19 13 Dip Switch Settings 20 14 Fault Finding 22 15 Component Circuit Value...

Page 5: ...kcal h kilocalorie per hour kPa kilopascals LED light emitting diode L min Litres per minute mA milliamps MJ h megajoule per hour mm millimetres mmH2O millimetres of water gauge pressure OHS overheat...

Page 6: ...CT 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 sel...

Page 7: ...ions Gas connection R3 4 20A Cold water connection R3 4 20A Hot water connection R3 4 20A Ignition system Direct electronic ignition Electrical consumption Normal 83 W Standby 12 W With 1 Remote contr...

Page 8: ...ter Pressure Relief Valve Safeguards the water circuit against excessive inlet pressure Opens at 2100kPa closes at 1500kPa Electrical Fuse 3A glass fuse prevents against over current Surge Protector p...

Page 9: ...h cold water from the mains supply Water Flows can also be calculated by the following formula M 60 x Q C x T Where M Water flow rate in litres minute If M is to 32 the water is unmixed If M is 32 the...

Page 10: ...5 1589 0 250 0 mixed 40 0 2400 0 250 0 32 0 1920 0 250 0 26 5 1589 0 250 0 Temperature Rise C unmixed and mixed 35 40 45 L min L hr MJ hr L min L hr MJ hr L min L hr MJ hr 22 7 1362 0 250 0 19 9 1191...

Page 11: ...ue 1 8 09 03 Rinnai Water Pressure As seen in the table below a minimum supply pressure of 180 kPa is required to operate at the rated flow of 32 L min In an actual installation pressure losses in the...

Page 12: ...Infinity REU V3232W HD250E REU V3232WC 7 Issue 1 8 09 03 Rinnai 4 Dimensions...

Page 13: ...nfinity REU V3232W HD250E REU V3232WC 8 Issue 1 8 09 03 Rinnai 5 Installation External Wall Installation Important Refer to the current versions of AG601 AS5601 and AS3500 for installation requirement...

Page 14: ...used for example the kitchen bathroom ensuite and laundry 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 in...

Page 15: ...PLIANCE DELIVERS WATER NOT EXCEEDING 50 C IN ACCORDANCE WITH AS 3498 If the front cover of the appliance contains the following text install it in accordance with Diagram 1 below If the front cover of...

Page 16: ...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 import...

Page 17: ...d THIS APPLIANCE DELIVERS WATER NOT EXCEEDING 50 C IN ACCORDANCE WITH AS 3498 on the front cover IF YES No further action required IF NO You will need to program the Kitchen controller to enable selec...

Page 18: ...Infinity REU V3232W HD250E REU V3232WC 13 Issue 1 8 09 03 Rinnai 7 Cutaway Diagram...

Page 19: ...power plug from socket Water flow control device fully open Bypass flow control device fully open ON OFF indicator OFF ON OFF switch OFF Error code indicator OFF Water flow sensor OFF Hot water tap cl...

Page 20: ...mbustion indicator OFF Combustion fan OFF HEX outgoing temp 60 C after 65 seconds NO YES YES NO YES YES NO Max fan revolution 2 seconds Solenoid valve 1 OFF Main solenoid valve OFF Modulating valve OF...

Page 21: ...matically 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 resultin...

Page 22: ...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 exchan...

Page 23: ...Infinity REU V3232W HD250E REU V3232WC 18 Issue 1 8 09 03 Rinnai 11 Time Charts Normal Combustion Miss Ignition Flame Failure Abnormal Pre Purge AIr Supply Exhaust Blockage...

Page 24: ...Infinity REU V3232W HD250E REU V3232WC 19 Issue 1 8 09 03 Rinnai 12 Wiring Diagram...

Page 25: ...OFF 1 ON 2 OFF 2 OFF Combustion Computer Programming Gas Type Temperature Computer Programming Combustion forced high or low LEGEND black section indicates position of switch Normal Combustion Forced...

Page 26: ...t a temperature of 95 C unless the heater is marked as an 95 C unit Such markings appear near the data plate located on the burner cover and or on the bypass servo wiring loom A unit set to between 40...

Page 27: ...ble 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 elect...

Page 28: ...eck thermal fuse 6 11 F1 2 Check overheat switch 7 11 F2 IMPORTANT If thermal fuse or overheat switch were faulty a Check heater for damage b Confirm Gas Type and Combustion dip switch settings page 2...

Page 29: ...lame rod 4 A1 3 Check heat exchanger outlet thermistor 10 6 E2 11 4 Check hot water outlet thermistor 11 6 E1 02 5 Check combustion fan 1 5 C1 5 and 9 6 Check the sparker unit 2 4 J6 7 Check gas valve...

Page 30: ...Heat Exchanger Outgoing Thermistor E2 6 Thermal Fuse F1 R R Below 1 2 Igniter J6 Gy Bk AC90 110V 3a Main Solenoid Valve I1 P Bk DC80 100V 1 5 1 9k 3b Solenoid Valve 1 I2 R Bk DC80 100V 1 8 2 2k 3c Sol...

Page 31: ...he 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 No...

Page 32: ...eck Solenoid 1 if error indicator 11 is displayed a Disconnect Solenoid 1 connector and measure resistance between Red and Black Normal 1 8 2 2k If normal proceed to b Faulty Replace Solenoid 1 b Meas...

Page 33: ...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 v...

Page 34: ...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 A1 Normal Voltage AC100 160V If...

Page 35: ...1 If normal replace PCB 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...

Page 36: ...servo fully open Normal DC4 6V Faulty Replace Water Flow Servo with Water Flow Servo d Measure voltage between Yellow and Grey with relay connector B2 connected with no water flowing water flow servo...

Page 37: ...rmal proceed to Flame Rod circuit Faulty Replace the Hot water Outlet Thermistor Note For controller readout of thermistor temperature whilst operational refer maintenance monitor chapter 17 No 2 Disc...

Page 38: ...sure the voltage between red and red on the transmission connector A2 Normal AC90 110V 12 21 If normal proceed to b Faulty Check if the voltage on fuse terminals is AC90 110V b Measure the voltage of...

Page 39: ...n the 2 core remote control cable Measure the voltage between terminals on the remote control terminal H1 Normal DC 11 13V If normal replace the remote control after confirming that the cable hasn t b...

Page 40: ...e resistance between White and WhiteW on heater side water flow servo and HW connection Normal 408 If normal proceed to b Faulty Replace Valve Heater b Disconnect relay connector J4 and J5 and measure...

Page 41: ...mal proceed to Frost Sensing Switch 18 Faulty Replace Anti frost Heater A assy Measure when temperature is 4 3oC Note If you cannot get the temperature low enough cool the low temperature sensing swit...

Page 42: ...utton 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 num...

Page 43: ...x 10 60 mA 10 mA 0 999 10 Bath fill amount this counts the litres during bath fill operation Litres 0 999 11 Heat exchanger exit thermistor temperature Exam ple 55 55 C C 0 999 12 Bypass servo presen...

Page 44: ...move the front cover from the appliance 4 Check gas type switches fig 1 are in the correct position top set or SW1 of switches 5 Attach pressure gauge to burner test point fig 2 6 Turn ON the gas supp...

Page 45: ...rinted Circuit Board PCB As required to the pressure shown Pressure Setting high N G 0 74 kPa Prop G 1 76 kPa LPG NZ 1 53 kPa 16 IMPORTANT Set dip switches No s 2 and 3 on the bottom SW2 set of switch...

Page 46: ...alve Turn power OFF disconnect the power cord 2 Remove front cover 4 screws 3 Remove manifold complete assembly 7 screws 4 Replace the manifold complete assembly and the packing 7 screws Note Do not l...

Page 47: ...EU V3232W HD250E REU V3232WC 42 Issue 1 8 09 03 Rinnai 5 Change over the gas conversion switches 1 4 on the PCB unit 6 Reset Gas pressurs as per instructions in 18 Gas Pressure Setting Procedure page...

Page 48: ...44 3 Removal of the Water Flow Sensor Servo and Bypass Servo 44 4 Removal of the Sparkers 45 5 Removal of the Combustion Fan 45 6 Removal of the Hot Water Outlet Heat Exchanger Outlet Thermistors 45 7...

Page 49: ...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 Remov...

Page 50: ...out the sparker 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 6 Removal of the Hot Water Ou...

Page 51: ...from solenoid coils d Remove two 2 manifold and gas control screws and take out by hand e Remove damper 3 screws f Remove two 2 burner retaining screws then remove combustion chamber front panel 9 scr...

Page 52: ...orward Handle O ring carefully e Remove the two 2 screws fixing the manifold and gas control f Remove four 4 heat exchanger unit screws g Remove connectors of the fan motor thermal fuse flame rod etc...

Page 53: ...Infinity REU V3232W HD250E REU V3232WC 48 Issue 1 8 09 03 Rinnai Heat Exchanger Back d Remove one 1 screw of the bi metal overheat switch...

Page 54: ...Infinity REU V3232W HD250E REU V3232WC 49 Issue 1 8 09 03 Rinnai 21 Exploded Diagram...

Page 55: ...Infinity REU V3232W HD250E REU V3232WC 50 Issue 1 8 09 03 Rinnai...

Page 56: ...Infinity REU V3232W HD250E REU V3232WC 51 Issue 1 8 09 03 Rinnai...

Page 57: ...Infinity REU V3232W HD250E REU V3232WC 52 Issue 1 8 09 03 Rinnai...

Page 58: ...5XEEHU 8 DEOH RQQHFWLRQ 8 1 6 57 DEOH 8 211 7 21 DV 6 5 7HVW 3RLQW 21752 DV VV 4 6 21752 DV RQQHFWLRQ 8 0 1 2 VV 3 8 0 1 2 VV 1 8 03 5 8 3 7 5HVWULFWRU 8 6 RZHU QU 8 6 URQW XUQHU 8 3 1 8 851 5 3 1 XU...

Page 59: ...UHVVXUH 5HOLHI 8 51 66 LUH 0RG 6ROHQ 9OY 8 51 66 LUH DQ 0RWRU 8 51 66 LUH 6HQVRU 8 51 66 LUH DWHU ORZ 6HUYR 8 51 66 LUH 7UDQVIRUPHU 8 51 66 LUH PS XVH 8 2 5 1 0 6 5 6 5 2 5 1 0 2 5 1 0 2 5 1 0 2 5 1 0...

Page 60: ...3 Rinnai REU V3232W AK NC REU V3232WC AK NC 1R 3 57 1 0 5 5 1 1R 5 3 57 1R 47 47 5 7 1 5 3 3 7KHUPLVWRU 6 7 URVW HDWHU RQO 8 75 16 250 5 VV 7 6 5 8 6 5 8 6 5 8 6 5 3 6 5 3 6 5 8 6 5 6 6 5 6 6 5 3 6 5...

Page 61: ...Infinity REU V3232W HD250E REU V3232WC 56 Issue 1 8 09 03 Rinnai Notes...

Page 62: ...79 Fax 08 9277 2531 Spare Parts National Tel 1300 366 388 Fax 03 9271 6611 HelpLine National Tel 1300 366 388 Fax 03 9271 6611 Product Service Victoria South Australia Northern Territory Tasmania Tel...

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