Rinnai INFINITY REU-3203W Service Manual Download Page 46 | Manualshive

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Infinity REU-3203W

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©Rinnai

19. Gas Conversion Procedure

1)

Close the main gas valve.

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 lose or damage the O-ring whe
reassembling.

Ensure connections for the solenoid and sparker
lead are made properly.

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Summary of Contents for INFINITY REU-3203W

Page 1: ...INFINITY REU 3203W 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: ...al and reserves 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...

Page 4: ...m 11 8 Operational Flow Chart 12 9 Operation Principles 14 10 Main Components 15 11 Time Charts 16 12 Wiring Diagram 17 13 Dip Switch Settings 18 14 Fault Finding 21 15 Component Circuit Value Table 2...

Page 5: ...e 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 switch PCB printe...

Page 6: ...r 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 s...

Page 7: ...he maximum rated flow of 32L min will not be achieved Model No REU 3203W Name of Appliance Continuous Flow Gas Hot Water Unit Exhaust System Force Combustion Installation Externally Wall Mounted Avail...

Page 8: ...elief 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 prevents agains...

Page 9: ...er 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 water is...

Page 10: ...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 0 250 0 17 7 1059 0 250 0 Temperature R...

Page 11: ...pressure losses in the plumbing system also need to be considered Time Required for Bath Fill Bath Fill temperature 42 C water pressure 200kPa 2 04kgf cm2 Ambient Water Temp Bath Volume 25oC 15oC 5oC...

Page 12: ...Infinity REU 3203W 7 Rinnai 4 Dimensions A Gas 41 Cold Water 51 Hot Water 42 Power 27...

Page 13: ...Infinity REU 3203W 8 Rinnai 5 Installation External Wall Installation Important Refer to the current versions of AG601 AS5601 and AS3500 for installation requirements...

Page 14: ...nfinity REU 3203W 9 Rinnai 6 Remote Controls Deluxe Kitchen Remote Control MC 70 Deluxe Bathroom Remote Control BC 70 Standard Kitchen Standard Bathroom Remote Control Remote Control MC 33 BC 45 BSC 4...

Page 15: ...e is needed any two core cable with similar specification can be used Maximum cable length is 50m Polarity does not need to be considered when connecting controllers Either colour wire can be connecte...

Page 16: ...Infinity REU 3203W 11 Rinnai 7 Cutaway Diagram...

Page 17: ...cket 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 closed Combustion fa...

Page 18: ...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 OFF Ignition failure...

Page 19: ...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...

Page 20: ...chieved 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 th...

Page 21: ...Infinity REU 3203W 16 Rinnai 11 Time Charts Normal Combustion Miss Ignition Flame Failure Abnormal Pre Purge AIr Supply Exhaust Blockage...

Page 22: ...Infinity REU 3203W 17 Rinnai 12 Wiring Diagram COLOUR CODING W White Bk Black Br Brown R Red B Blue Y Yellow P Pink Or Orange Gr Green Gy Grey...

Page 23: ...ai Australia Spare Parts If in doubt contact Rinnai Australia Dip Switches explained Dip Switches Version 1 Gas Type LP Natural 1 OFF 1 ON 2 OFF 2 OFF Combustion Computer Programming Gas Type Temperat...

Page 24: ...or Without Remote Controllers Without Remote Controllers Only Dip Switches Version 2 Gas Type LP Natural 1 OFF 1 ON 2 OFF 2 OFF Combustion 50o C 55o C Factory preset 65o C 75o C 85o C 95o C Normal Com...

Page 25: ...95 C DO NOT attempt to set a temperature of 85 C 95 C unless the heater is marked as an 85 C 95 C unit Such markings appear near the data plate located on the burner cover and or on the bypass servo...

Page 26: ...ustrated below Fault Finding Table Describes possible faults and error codes page 22 Operational Flow Chart page 12 Component Circuit Value Table Summarises running and standby electrical values for a...

Page 27: ...ch activated Unit operates then stops 19 1 Check 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 T...

Page 28: ...d 1 Check water flow sensor 8 3 E3 2 Check flame 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 Che...

Page 29: ...100 V O 3 d Main Solenoid Valve SV3 15 I4 Y BLK 1 8 2 2 K Ohm Resistance of func tional component DC 80 100 V O 3 e Modulating Valve 8 F3 OR OR 68 88 70 90 Ohm AC 1 0 2 5 V O DC 1 20 V O 4 Flame Rod 7...

Page 30: ...ure read out in C can be obtained from a Controller unit whilst the unit is operational 12 Surge Protector J8 W W 207 264 V Oand S 13 Electrical Fuse J7 B Br 207 264 V Oand S 14 Transformer A2 A D R R...

Page 31: ...nsor 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 nor...

Page 32: ...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 Measure voltage betwee...

Page 33: ...place PCB 3e Modulating Valve Circuit a Disconnect Modulating Valve fasten terminal and measure resistance between terminals Normal 70 90 If normal proceed to b Faulty Replace Modulating Valve b Measu...

Page 34: ...t 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 normal repalced PC...

Page 35: ...e 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 point pressure 8...

Page 36: ...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 fully open Normal...

Page 37: ...e Rod circuit Faulty Replace the Hot water Outlet Thermiostor Note For controller readout of thermistor teperature whilst operational refer maintenance monitor chapter 17 No 2 Disconnect relay connect...

Page 38: ...etween 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 ter minals is AC90 110V b Measure the voltage of the connector A o...

Page 39: ...e 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 been damaged or sho...

Page 40: ...en 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 resistance betwee...

Page 41: ...st 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 switch with ice etc 18...

Page 42: ...ng the ON 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 2 The m...

Page 43: ...w value Example 6 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 Example 55 55 C C 0 999 12 Byp...

Page 44: ...he 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 supply 7 T...

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

Page 46: ...FF 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 lose or damage the...

Page 47: ...Infinity REU 3203W 42 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 39 LPG NG...

Page 48: ...e 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 Removal of the Tr...

Page 49: ...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...

Page 50: ...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 Outlet Heat Exchange...

Page 51: ...s 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 screws g Take out the...

Page 52: ...ng 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 h Pull the heat ex...

Page 53: ...Infinity REU 3203W 48 Rinnai Heat Exchanger Back d Remove one 1 screw of the bi metal overheat switch...

Page 54: ...Infinity REU 3203W 49 Rinnai 21 Exploded Diagram...

Page 55: ...Infinity REU 3203W 50 Rinnai...

Page 56: ...Infinity REU 3203W 51 Rinnai...

Page 57: ...Infinity REU 3203W 52 Rinnai...

Page 58: ...5 CONNECTION Cable 3896 1 016 SKIRT Cable 1 018 PANEL Reinforcement 1 019 BRACKET Gas Control 1 020 BRACKET Surge Protector 1 021 BRACKET PCB 1 022 BRACKET Transformer 1 024 PLATE Plug 1 100 CONNECTIO...

Page 59: ...Fan 92087055 3481 1 151 CASING Fan 1 153 CONNECTION Fan 1 154 GASKET Fan Connection 3482 1 400 CONNECTION Water Inlet R3 4 92081702 3381 1 401 RETAINER Plug 1 402 FILTER Assy Water 92083773 3485 1 40...

Page 60: ...SFORMER Small 3530 708 HEATER A Anti Frost 230V K only 3534 709 CLIP Anti Frost Heater K only 2364 710 CLIP Anti Frost Heater K only 2032 711 HEATER B Anti Frost 230V K only 3535 712 CLIP Anti Frost H...

Page 61: ...Infinity REU 3203W Rinnai Notes...

Page 62: ...Infinity REU 3203W Rinnai...

Page 63: ...Infinity REU 3203W Rinnai...

Page 64: ...79 9479 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...

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