Rinnai BC 70 2A Service Manual

INFINITY 26i and HD50iInfinity High Capacity Continuous Flow Gas Hot Water SystemSERVICE MANUAL

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 5 - Issue 1 - 8/09/03 ©RinnaiTable 1. Approx. Water Flows & Gas Usage - Rinnai 26i and HD50i Preset

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 6 - Issue 1 - 8/09/03 ©RinnaiApprox.Water Flows & Gas Usage -Rinnai Infinity26i and 50i Preset Temp

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 7 - Issue 1 - 8/09/03 ©RinnaiWater PressureThe water pressure vs flow characteristics are as follows:WA

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 8 - Issue 1 - 8/09/03 ©Rinnai4. DimensionsInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 9 - Issue 1 - 8/09/03 ©Rinnai1209020MC-91-1A1959722BC-70-2A5. Remote ControlsRemote ControlsRemote Con

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 10 - Issue 1 - 8/09/03 ©RinnaiDO NOT INSTALL THE CONTROLLERS• NEAR A HEAT SOURCE, SUCH AS A COOK TOP, S

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 11 - Issue 1 - 8/09/03 ©RinnaiConnecting remote control cablesDo not attempt to connect the remote cont

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 12 - Issue 1 - 8/09/03 ©RinnaiMC-91A Controller ProgrammingQuestion 1: Are four Controllers connected ?

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 13 - Issue 1 - 8/09/03 ©Rinnai6. Cutaway DiagramInfinity 26i and 50iInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 14 - Issue 1 - 8/09/03 ©Rinnai7. Operational Flow ChartInfinity 26i and HD50i

The Rinnai Infinity 26i and Heavy Duty 50i water heater, when correctly installed, comply with the requirements of the United Kingdom Water Regula-tio

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 15 - Issue 1 - 8/09/03 ©Rinnai8. Operation PrinciplesHot Water Operation1. Ignition• Activate controll

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 16 - Issue 1 - 8/09/03 ©Rinnai9. Main Components1) Printed Circuit Board• The Printed Circuit Board co

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 17 - Issue 1 - 8/09/03 ©Rinnai 4) Air Supply Control• Air for combustion is supplied by a centrifug

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 18 - Issue 1 - 8/09/03 ©Rinnai10. Time ChartsInfinity 26i and HD 50iInfinity 26i and HD50i- 18 -

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 19 - Issue 1 - 8/09/03 ©Rinnai11. Wiring DiagramAC 230VInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 20 - Issue 1 - 8/09/03 ©RinnaiNote: Unit must be specially converted for delivery at 85 C forREU-V2632

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 21 - Issue 1 - 8/09/03 ©Rinnai13. Fault FindingIf there is a fault with the appliance, and controllers

Error CodeFault Action StepTurn off all hot water tapsPress On/Off on a controller twiceCheck flue terminal for blockages visual10 Check Flue WCheck

Make sure that if there is a controller, it is on visualEnsure there is enough water flow SCheck Filter RCheck for Air lock M Check power cord is pl

Fault Finding Steps. A. Combustion Fan Circuit. The voltages should be checked while the unit is On, and water is flowing. The meter leads can be i

Produced by Rinnai Technical Services DepartmentAugust 2004 - Issue 1.No portion or part of this manual may be copied without prior permission from Ri

C. Flame Rod. If the flame rod circuit is faulty the error code will be either 11 or 72. If 72 is the error disconnect flame rod and cycle unit. If

D. Solenoid Valves. There are 4 solenoid valves and on modulating valve. Three of the solenoids are burner sectional solenoids, and the fourth is t

F. Gas Filter. There is an inline gas filter in the inlet pipe work. If the gas pressure will not achieve the correct level, and the inlet pressur

Water Flow Servo Circuit. From the water flow servo circuit there are 6 wires. Follow them towards the pcb until you find the connector plug. This i

H. Earth Lead. Check to make sure that all earth leads are connected and there are no breaks or short circuits. Checks should be made at the earth

K. Thermistors. Check all thermistors by unplugging thermistor lead and inserting meter ends into both sides of thermistor plug and measuring resist

L. Check Non Return Valves and Mixers in System Non Return valves and mixing valves occasionally have a tendency to pass cold water, especially if t

P. Surge Protection sub pcb The surge protection sub pcb is located in a small white box on the front of the main pcb. It is below the dip switches

S. Water flow. To operate there must be at least 2.4 l/min flowing through a Rinnai water heater. If there is multiple heaters, installed without

V. Frost Sensing Switch The frost sensing switch is located a short distance upstream (to the right) of the long, cylindrical frost heater. It is a

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - iii - Issue 1 - 8/09/03 ©RinnaiTable of Contents Glossary of Terms and Symbols ...

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 23 - Issue 1 - 8/09/03 ©Rinnai14. Component Circuit Value TableCN Wire ColourSurge Protection F5 B-Br

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 31 - Issue 1 - 8/09/03 ©Rinnai15. Maintenance Monitor / Error HistoryThis feature is available where t

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 32 - Issue 1 - 8/09/03 ©Rinnai*Note 3 Water Flow Servo Positioning To return to normal operation• Pres

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 33 - Issue 1 - 8/09/03 ©Rinnai16. Gas Pressure Setting ProcedureThe regulator on the Infinity is elect

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 34 - Issue 1 - 8/09/03 ©Rinnai11) Adjust the regulator screw on the modulating valve as required to the

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 35 - Issue 1 - 8/09/03 ©Rinnai17. Gas Conversion ProcedureGas Conversion Method Tools required: Screw

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 36 - Issue 1 - 8/09/03 ©Rinnai⑤ Change Gas Type Switch on PCB Infinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 37 - Issue 1 - 8/09/03 ©RinnaiPressure Setting ① Remove pressure test point sealing screw from gas co

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 38 - Issue 1 - 8/09/03 ©Rinnai⑨ Change Dipswitch No. 7 & 8 to ON for high combustion. ⑩ Set hi

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 39 - Issue 1 - 8/09/03 ©RinnaiAnti Frost Heater InstallationFitting method1. Turn off and disconnect th

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - iv - Issue 1 - 8/09/03 ©RinnaiGlossary of Terms and SymbolsdB(A) - sound pressure level in decibels, “A

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 40 - Issue 1 - 8/09/03 ©RinnaiInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 41 - Issue 1 - 8/09/03 ©Rinnai18. Dismantling for Service230 Volt potential exposure. Isolate the appl

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 42 - Issue 1 - 8/09/03 ©RinnaiIMPORTANTFor some areas of dismantling you may need to isolate any or all

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 43 - Issue 1 - 8/09/03 ©Rinnai5) Removal of Transformera. Remove PCB (Refer to 2)b. Remove 100 V harnes

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 44 - Issue 1 - 8/09/03 ©RinnaiManifold Assemblya. Remove combustion chamber front panel.b. Remove burne

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 45 - Issue 1 - 8/09/03 ©RinnaiGas Control9) Removal of Flame rod and spark pluga. Remove flame rod term

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 46 - Issue 1 - 8/09/03 ©Rinnai13) Removal of Bypass Servoa. Remove fan motor (Refer to 14)b. Remove 3 p

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 47 - Issue 1 - 8/09/03 ©Rinnai15) Removal of Anti Frost heatera. Remove 2 pin connection of Anti Frost

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 48 - Issue 1 - 8/09/03 ©Rinnai17) Removal of Heat Exchangera. Remove PCBb. Remove fan motorc. Remove 2

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 49 - Issue 1 - 8/09/03 ©Rinnai18) Removal of Thermal Fusea. Remove heat exchanger.b. Remove Thermal Fus

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 1 - Issue 1 - 8/09/03 ©Rinnai1. IntroductionThe Rinnai Infinity hot water units represents the latest

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 50 - Issue 1 - 8/09/03 ©Rinnai19. Exploded DiagramInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 51 - Issue 1 - 8/09/03 ©RinnaiInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 52 - Issue 1 - 8/09/03 ©RinnaiInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 53 - Issue 1 - 8/09/03 ©RinnaiInfinity 26i and HD50i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 54 - Issue 1 - 8/09/03 ©Rinnai20. Parts ListNoPart NameRJ Drawing No RUK Part No.

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 54 - Issue 1 - 8/09/03 ©RinnaiNoPart NameRJ Drawing No. RUK Part No. 26i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 55 - Issue 1 - 8/09/03 ©RinnaiNoPart NameRJ Drawing No.RUK Part No. 26i HD50i717MOU

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 57- Issue 1 - 8/09/03 ©RinnaiNotesInfinity 26i and HD50i

SERVICE CONTACT POINTS Rinnai Rinnai UK LTD. 9 Christleton Court Manor Park Runcorn Cheshire WA7 1ST Tel. 01928 531870 Fax. 01928 531880 E-mail. i

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 2 - Issue 1 - 8/09/03 ©Rinnai2. SpecificationsNote 1: The default factory setting is 55ºC for the Infi

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 3 - Issue 1 - 8/09/03 ©RinnaiSensors and Safety Devices• Heat Exchanger Thermistor: Measures hot water

Infinity REU-V2632FFU / HD200I REU-V2632FFUC - 4 - Issue 1 - 8/09/03 ©Rinnai3. Water Flow Rates and PressuresWater FlowsTable 1 shows unmixed and mix