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Rinnai Continuum REU2532-W Series, Руководство по обслуживанию

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REU-2532W Series

13

Rinnai

5 °F Over temperature Cut-Off

The temperature of the outgoing hot water is constantly monitored by the water temperature thermistor
located near the outlet of the appliance. If the outgoing water temperature reaches 5 °F above the preset
temperature, the burner will automatically go out. The burner will only ignite again once the outgoing
hot water temperature falls below the preset temperature.

Содержание Continuum REU2532-W Series

Страница 1: ...EU2532 WC Series Water Heaters SERVICE MANUAL Rinnai Corporation 103 International Drive Peachtree City Ga 30269 Telephone number 800 621 9419 No portion or part of this manual may be copied without p...

Страница 2: ...completing the service and confirming that there are no water or gas leaks or incorrect wiring test operation of the appliance After confirming normal operation explain what was serviced to the custo...

Страница 3: ...bustion Specifications 18 11 Dip Switch Positions 19 12 Water Flows 22 13 Main Components 24 14 Time Charts 26 15 Operation Flow Principle 28 16 Operation Principles 30 17 Error Messages 32 18 Diagnos...

Страница 4: ...rtz IC integrated circuit BTU H British thermal units PSI Pounds per square inch LED light emitting diode GPM gallons per minute mA milliamps W C inches of water column mm millimeters Nox oxides of ni...

Страница 5: ...the fan housing The by products of combustion on the external unit are expelled from the appliance through the flue outlet situated on the front of the appliance at the top The general layout of comp...

Страница 6: ...nit has a secondary freeze prevention device that will allow the unit to fire for three seconds if the water temperature inside the appliance drops below 37 F This mode will heat the water inside the...

Страница 7: ...elderly care centers etc where the water temperature can not exceed a certain set point Over Temperature Control All Continuum models incorporate a device to prevent the hot water temperature from ex...

Страница 8: ...REU 2532W Series 8 Rinnai 3 Dimensions...

Страница 9: ...REU 2532W Series 9 Rinnai 4 Installation Piping recommendation...

Страница 10: ...is flowing Enhanced communication system between the remote controls allowing priority temperature selection from each remote control Remote controls offer self diagnostics in the event of a fault wi...

Страница 11: ...m the remote control s connected to the Continuum water heater Power for the remote s is supplied from the PC board On the front of the PCB there are two screws labeled terminals for controls This is...

Страница 12: ...ature outside the heat exchanger reaches 264 F If the thermal fuse melts it breaks an electronic circuit which in turn shuts off the power supply to the gas solenoids shutting the unit off Combustion...

Страница 13: ...y monitored by the water temperature thermistor located near the outlet of the appliance If the outgoing water temperature reaches 5 F above the preset temperature the burner will automatically go out...

Страница 14: ...int Temperature without remote Factory setting 120 F Temperature range with remote keypads connected BC 45 4US 96 120 F BSC 45 4US 96 120 F MC 45 4US 96 140 F MCC 45 4US 96 180 F Approved gas type Nat...

Страница 15: ...control cable Non polarized two core cable Top of heater Front of heater Sides of heater Back of heater Clearances from combustibles Ground Top of heater Front of heater Sides of heater Back of heater...

Страница 16: ...REU 2532W Series 16 Rinnai 9 Cut way Diagram REU 2532 FFU Series...

Страница 17: ...REU 2532W Series 17 Rinnai 10 Schematic Diagram REU 2532W Series...

Страница 18: ...consumption Maximum Btu s 199 000 199 000 Upper 1 15 0 75 Injector Diameter Lower 1 8 1 15 Main Burner B3A7 1 Lean and Rich Bunsen Burner Main Damper H73 115 Upper 6 Lower Not Used Minimum Supply 6 W...

Страница 19: ...set or check the manifold gas pressures on this appliance When dip switch 7 is placed in the ON position it places the appliance into forced low fire When dip switches 7 and 8 are placed in the ON po...

Страница 20: ...n checking and or setting manifold gas pressures Dip switch 7 and 8 are used to place the appliance into forced high fire Before making any adjustments to these switches please ensure you follow the g...

Страница 21: ...tial Units Residential Units REU 2532 W REU 2532 W Propane Gas Model Natural Gas Model Dip Switch Settings Dip Switch Settings SW1 SW2 SW1 SW2 1 Off 1 Off 1 Off 1 On 2 On 2 Off 2 On 2 Off 3 Off 3 Off...

Страница 22: ...appropriate temperature rise Draw a vertical line up the graph from the selected temperature rise until it intersects the curve The point at where these lines intersect indicates flow at that temperat...

Страница 23: ...you need the following information requested water temperature and inlet water temperature Next subtract the inlet water temperature from the requested temperature to get your delta T or temperature...

Страница 24: ...heat exchanger 3 Burner The burner assembly is made up of 16 identical stainless steel Bunsen burners secured by an aluminized steel framework An aluminum manifold with 32 integral injectors supplies...

Страница 25: ...mbustion fan is Controlling the gas valve based upon data from the combustion fan means that combustion remains satisfactory even if there are sudden changes in input conditions 1 Water Flow Sensor an...

Страница 26: ...REU 2532W Series 26 Rinnai 15 Time Charts External Unit...

Страница 27: ...REU 2532W Series 27 Rinnai...

Страница 28: ...gas valve SV1 OPEN Sparker ON Solenoid valve SV3 OPEN Solenoid valve SV0 Closed Solenoid valve SV1 Closed Solenoid valve SV2 Closed Pre purge of combustion fan 2 seconds Overheat bi metal switch faul...

Страница 29: ...shing 12 Flashing Flame failure less than 1 micro amp Water temperature over 200 degrees Thermistor faulty open or short circuit Combustion fan rpm s abnormal Flue restriction or block 71 Flashing 52...

Страница 30: ...water flow sensor begins to revolve The revolution speed is proportional to the heater flow A sensor located inside the device relays information in the form of magnetic pulses to the main PCB to dete...

Страница 31: ...e PCB that there is no water flowing in turn the PCB closes the gas valves The combustion fan continues to operate for 65 seconds This is to provide quicker ignition when the tap is turned on and off...

Страница 32: ...ppliance is properly grounded Check gas solenoid valves for open or short circuits Check power supply for loose connections Check power supply for proper voltage and voltage drops Disconnect all MSA c...

Страница 33: ...ons Ohm out each solenoid 72 Flame Sensing Device Faulty Check micro amps produced by flame rod Remove flame rod and check for carbon build up clean will sand paper Ensure flame rod is touching flame...

Страница 34: ...lse min Off 0 6 gal min 20 Hz Below 1200 pulse min Yellow Black Gnd DC 4 7 V Pulse 17 460 Hz Combustion Fan A1 Red Black DC 6 45 V Yellow Black DC 11 13 V White Black Gnd DC 6 45 V 33 400 Hz Flame Rod...

Страница 35: ...REU 2532W Series 35 Rinnai 20 REU 2532W Series Wiring...

Страница 36: ...REU 2532W Series 36 Rinnai 21 Block Diagram...

Страница 37: ...Disconnect unit from power supply b Measure resistance to check the electric fuse 3 amp Normal less than 1 If normal proceed to check item 2 below Faulty Replace 3 amp glass fuse If the fuse blows aga...

Страница 38: ...replacing the remote control Faulty Replace PCB No combustion despite remote control indication 1 Is the water flow sensor normal Check the water flow sensor a Check the voltage at PCB connector B4 re...

Страница 39: ...ormal 1 M or more If normal replace the PCB unit Faulty Replace the flame rod See page 43 for additional information and reading pertaining to the flame rod 3 Is the water temperature thermistor norma...

Страница 40: ...l check item c below Faulty Replace the PCB unit c Measure voltage at connector A1 black and white wires Normal 6 45 VDC or 9 9 4 K 33 400 Hz If normal proceed to check item 5 below Faulty Replace the...

Страница 41: ...ver solenoid SV1 a Disconnect the change over solenoid SV1 connector and measure resistance at the solenoid terminals Normal 1 7 2 1 K If normal check b below Faulty Replace the change over solenoid S...

Страница 42: ...Disconnect the changeover solenoid SV3 connector and measure the resistance at the solenoid terminals Normal 1 7 2 1 K If normal check b below Faulty Replace the changeover solenoid SV3 b Measure the...

Страница 43: ...the flame rod terminal C1 and the appliance earth Normal 5 150 VAC from yellow to ground If normal check b below Faulty Replace the PCB unit b Check that the flame rod attachment is not loose Normal...

Страница 44: ...5 K 140 F 2 2 2 7 K 221 F 0 6 0 8 Normal Proceed to check item 2 below Faulty Replace the water temperature thermistor 2 Is the change over solenoid SV1 normal a Disconnect the changeover solenoid SV...

Страница 45: ...l a Disconnect connector B2 and measure the resistance of the water flow servo red blue wires Normal 19 24 If normal proceed to b Faulty Replace the water flow servo and sensor b Disconnect connector...

Страница 46: ...left for location of this element These are white wires Normal 100 110 If normal proceed to check item 2 below Faulty Replace defective anti frost heater assembly c Check resistance of the two heat ex...

Страница 47: ...o to A 6 Yes Go to A 6 2 1 Measure resistance of each solenoid valve Remove connector E from the PCB before measuring Pink Black SV0 1 7 2 1K Yellow Black SV1 1 7 2 1K Brown Black SV2 1 7 2 1K Are val...

Страница 48: ...voltage between yellow black at connector B4 4 7 VDC No Replace water flow sensor 12 Yes Replace PCB 13 Error code 72 displayed on the digital monitor 2 Check flame rod Measure resistance between flam...

Страница 49: ...2 1 Disconnect connector E from the PCB Measure resistance between yellow black SV1 1 7 2 1K No Replace SV1 25 Yes Go to B 8 7 Check solenoid valve SV1 2 Measure voltage between yellow black of SV1 c...

Страница 50: ...ature at various resistance Resistance values match table on page 44 No Replace water temperature thermistor 36 Yes Go to D 2 2 1 Disconnect solenoid connector E from PCB and measure the resistance be...

Страница 51: ...Anti frost heater located in the water valve 46 Yes Go to E 2 2 Read resistance of the heating element that is mounted on the front of the heat exchanger White wires 100 110 No Replace anti frost hea...

Страница 52: ...rew Adjust the regulator screw to achieve the correct gas pressure See figure 1 for location of the regulator adjustment screw Below are the proper pressures for Low fire per gas type Propane 0 88 w c...

Страница 53: ...g the proper water temperature as set on the controller at your outlets If controllers are not being used the output temperature should be 120 F Figure 1 Figure 2 High pressure setting Pot Regulator a...

Страница 54: ...mpt to repair this product Item Page 1 Removal of the Front Panel 55 2 Removal of the PC Board 55 3 Removal of the Water Flow Control and Sensor 55 4 Removal of the Sparker 56 5 Removal of the Combust...

Страница 55: ...r 2 Removal of PC board CAUTION 120 volt potential exposure Isolate the appliance and reconfirm power has been disconnected using a multi meter a Remove the two 2 screws holding the PCB in place with...

Страница 56: ...reconfirm power has been disconnected using a multi meter a Remove one 1 Phillips screw that secures the sparker module to the unit casing b Disconnect high tension lead and connector 5 Removal of the...

Страница 57: ...moval of Burner Manifold and the Burner CAUTION 120 volt potential exposure Isolate the appliance and reconfirm power has been disconnected using a multi meter a To remove the burner manifold remove 6...

Страница 58: ...this connection c Disconnect connectors from solenoids note which connector goes to each solenoid alone with the proper wire colors Pull gas valve assembly out of unit 10 Removal of Heat Exchanger CA...

Страница 59: ...connected using a multi meter This process may involve removing the heat exchanger if the thermo fuse on the rear of the heat exchanger is blown a The REU 2532 has four thermal fuses see picture below...

Страница 60: ...REU 2532W Series 60 Rinnai 26 EXPLODED VIEW CABINET...

Страница 61: ...REU 2532W Series 61 Rinnai EXPLODED VIEW INTERNALS...

Страница 62: ...REU 2532W Series 62 Rinnai EXPLODED VIEW INTERNALS...

Страница 63: ...REU 2532W Series 63 Rinnai EXPLODED VIEW ELECTRICAL...

Страница 64: ...Panel Packing Side AU115 163 1 009 Cable Connection BU56 602 N 1 010 Cable Seal Packing AU169 126 1 011 Seal Packing AU105 113 1 100 Gas Control Assembly C36E 41 S 1 101 Screw AU39 965 2 102 Gas Conne...

Страница 65: ...66 398 1 119 Electrode Holder AH66 393 1 120 Upper Packing of Combustion Chamber U245 262 1 122 Fan Casing Assembly CH51 615 1 123 Blower Motor H89 261 1 127 Fan Connecting Bracket BH29 606 1 128 Fan...

Страница 66: ...all AU103 413 1 411 Drain Valve AU142 444 1 702 PCB Cover Side BU195 507 1 703 PCB Cover Front BU168 707 1 704 Transformer Assembly ET 281 1 705 PCB Bracket U245 257 1 706 Ignitor EI 189 1 707 High Te...

Страница 67: ...ss U245 610 1 726 Mold Type Over Heat Switch BU129 824 2 1 730 PCB U245 1200 1 731 Surge Protector BU195 1873 1 732 Frost Sensing Switch H73 750 1 733 120V Anti Frost Heater Assembly U245 1320 1 734 S...

Страница 68: ...M10B 2 14 2 816 O ring M10B 2 7 1 817 O ring M10B 1 24 1 818 Packing C36E1 6 2 888 V2532W Owner s Manual U245 1360 1 Package Spec Sheet PWB 261 1 Manual 3 4 gas control valve BU195 1865 1 Kitchen remo...

Страница 69: ...V3 and POV Gas valve and Modulating solenoids Set meter above 2K SV0 Pink Black 80 100 VDC 1 8K 2K ohms E1 1 2 SV1 Black Yellow 80 100 VDC 1 8K 2K ohms E2 2 3 SV2 Black Blue 80 100 VDC 1 8K 2K ohms E3...

Страница 70: ...esistance decrease Then apply some ice to the thermistor and the resistance should increase See below for examples of temperatures and resistance reading at those temperatures Example 59 F 11 4 14K 86...

Страница 71: ...sistance reading of 81 86 ohms and the one located in the water flow sensor valve has a resistance reading of 16 19 ohms Voltage throughout this circuit should be 120 VAC 3 Amp Fuses This unit has two...

Страница 72: ...ulti step set back thermostats The Infra reds Vent free radiant heaters 99 9 efficient Heat like the sun Portable Cooking Products One two and two burner with broiler models Perfect for camping a picn...

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