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Installation and User 

Manual 

 
 

 

 

 

 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Continuous Flow Water Heater

 

Important. 

 

Read  these  instructions  carefully  before  attempting  installation  or  use  of 
this  appliance.  All  work  must  be  carried  out  by  competent  persons. 

REU-KM2035FFUD-E                          

 

REU-KM2035FFUDHD-E 

Infinity K20i                                     

 

Infinity HDC1000i 

REU-KM3237FFUD-E

 

REU-KM2635FFUD-E 

Infinity K32i

 

Infinity K26i 

REU-KM3237WD-E                                   

REU-KM2635WD-E 

Infinity K32e                                         

 

Infinity K26e 

REU-KM3237FFUDHD-E                       

REU-KM2635FFUDHD-E 

Infinity HDC 1500i                                

Infinity HDC 1200i 

REU-KM3237WDHD-E                          

REU-KM2635WDHD-E 

Infinity HDC 1500e                               

Infinity HDC 1200e 

Summary of Contents for R E U - K M2635FFUDHD-E

Page 1: ...be carried out by competent persons REU KM2035FFUD E REU KM2035FFUDHD E Infinity K20i Infinity HDC1000i REU KM3237FFUD E REU KM2635FFUD E Infinity K32i Infinity K26i REU KM3237WD E REU KM2635WD E Infi...

Page 2: ...HDC1200 Infinity K20 HDC1000 Certificate numbers E1188 5560 Rev 3 ID number 0461BU0950 Date of Issue 01 09 2009 Last revision 28 05 2015 Certificate numbers E1189 5560 Rev 1 ID number 0461BU0950 Date...

Page 3: ...ERATION 20 MAIN COMPONENTS 23 INSTALLATION INSTRUCTIONS 24 FLUE REQUIREMENTS 28 CONDENSATE DISPOSAL 32 TEMPERATURE CONTROLS 34 EZ CONNECT 36 TESTING 37 GAS PRESSURE SETTING 38 DIP SWITCH SETTING 40 DI...

Page 4: ...ls be used for these locations where possible The water heater venting and vent termination s should not be installed in any areas where the air may contain these corrosive compounds If it is necessar...

Page 5: ...ner is shut OFF and only turned ON again when the temperature falls to below the selected temperature The burner lights automatically when the hot water tap is opened and extinguishes when the tap is...

Page 6: ...cause severe burns instantly or even death from scalding Children disabled and the elderly are at the highest risk of being scalded by excessively hot water Always test the temperature of the water be...

Page 7: ...water supply Keep flammable materials trees shrubs chemicals etc away from the flue outlet terminal Do not spray water into flue terminal Do not touch the flue outlet Do not insert objects into the f...

Page 8: ...water to a safe level Water temperatures above 50 C can cause severe burns instantly such scalding may even result in death Those most at risk are children disabled elderly and the infirm Hot water a...

Page 9: ...45 46 48 50 C Master Universal Controller 37 38 39 40 41 42 43 44 45 46 48 50 55 C 60 65 C HD Deluxe Bathroom Controller Hot Water Delivery 37 38 39 40 41 42 43 44 45 46 48 50 C Bath fill Delivery 37...

Page 10: ...The temperature set point on the controller with priority can always be lowered but the set point can only be raised to 43 C Other controllers are unable to take priority or change the delivery tempe...

Page 11: ...l shut the water heater down completely including the temperature controller digital display The Digital Monitor will go out If hot water taps are opened when the Rinnai Infinity is off cold water wil...

Page 12: ...r the system Select the desired temperature using the Hot water temp buttons The selected temperature will be displayed on all controller displays This is the water temperature which will be supplied...

Page 13: ...ap in use there may be a variation between the temperature displayed at the controller and the temperature at the tap Do not clean the control with solvents or detergents Use only a soft damp cloth TE...

Page 14: ...if power is turned Off and then On Code Displayed Fault Remedy Noticeable reduction in water flow Inlet water filter needs to be cleaned 03 Power interruption during operation water will not flow whe...

Page 15: ...display on the controller Isolate pump then start heater before restarting pump This is a safety feature The pump should also be fitted with a timer to prevent the consumption of energy while the buil...

Page 16: ...re does not reset the heater switch it on and off at its main supply and then go through these steps again If heater is still not working call your local service agent or Rinnai for assistance CARING...

Page 17: ...appliance if you are not qualified This can void the warranty If the information in this manual is not followed exactly a fire or explosion could result This manual must be read in its entirety before...

Page 18: ...e Department of the Environment Building Standards Scotland Regulations I E E Wiring regulations for electrical installations Gas safety Installation and Use Regulations current issue BS 5546 BS 5440...

Page 19: ...rs are not supplied with the Rinnai HD range of heaters because they are commercial units If you require controllers in commercial situations they are compatible with the HD range and available from R...

Page 20: ...20 OPERATION Infinity K32e and HDC1500e Infinity K32i and HDC1500i...

Page 21: ...21 OPERATION Infinity K26e and HDC1200e Infinity K20i K26i HDC1000i and HDC1200i...

Page 22: ...r starting first Once the air proving is made the Main Solenoid Valve and Change over Solenoid Valves are opened and the Burner is lit by the sparking Igniter Temperature Control Once the Flame Rod pr...

Page 23: ...broken This will cease combustion in case of overheat 5 Combustion Fan The combustion fan supplies primary air into the burner wings and secondary air up through the Bunsen style burners The fan is DC...

Page 24: ...ay not be installed in a humid area All Models LPG appliances may not be installed in basements or below ground level The wall or structure on which the heater is mounted must be capable of supporting...

Page 25: ...the heater side of the isolation valves An unvented kit to local regulations must be installed in the pipework when the system is closed i e has a flow and return or tank Positions of the cold water...

Page 26: ...be 20 mbar Natural Gas G20 or 34 5 mbar Propane G31 at the inlet of the appliance with all appliances at high fire Electrical Connection The heater electrical supply must be installed to the latest I...

Page 27: ...27 INSTALLATION INSTRUCTIONS Name Site ref Date Name Site ref Date Note Water must reach set Temperature within 1 minute at the furthest outlet...

Page 28: ...free of any compounds that cause corrosion of internal components These include corrosive compounds that are found in aerosol sprays detergents bleaches cleaning solvents oil based paints varnishes a...

Page 29: ...0mm clearance between them The flue terminal should be over 2m from ground level whenever possible For lower installations a terminal guard cage must be installed Flue Length The maximum flue total eq...

Page 30: ...ed component Improper installation of flue systems and components or failure to follow all installation instructions can result in property damage or serious injury The Rinnai Infinity Condensing inte...

Page 31: ...port roof 200mm G From vertical drain pipe or soil pipe 150mm H From and internal or external corner 300mm I Above ground roof or balcony level 300mm J From surface facing the terminal 600mm K From te...

Page 32: ...t of discharge Because the condensate is a by product of a gas com bustion it is mildly acid For this reason copper tube and fittings MUST NOT be used as it will corrode Instead Rinnai recommend plast...

Page 33: ...33 CONDENSATE DISPOSAL...

Page 34: ...page 11 Positioning the temperature controls the following points should be taken into account Fit the controls out of reach of children suggested height from the floor 1 5m Avoid positions where the...

Page 35: ...an be secured with cable clamp B supplied with the water controllers Fig 7 4 Loosen the screws on terminals C and D Connect the spade connectors of the controller cables to these terminals Tighten the...

Page 36: ...ations 2 Remove the protective cap from the 3 pin connector marked EZ Connect located in the wiring harness of the Primary Unit Fig 1 3 Plug in the EZ Connect cable The end marked To EZ Connect connec...

Page 37: ...test point on the inlet to the gas valve The pressure must be within the local defined limits for the type of gas that is being used If the pressure is lower the gas supply is inadequate and the wate...

Page 38: ...nce 4 Check gas type dip switch no 1 of SW2 is in the correct position for the type of gas Nat or LPG you are using See Fig 1 5 Attach pressure gauge to burner test point Fig 2 6 Turn ON the gas suppl...

Page 39: ...ees at a time then let the pressure settle down before turning it more Seal screw shut 16 IMPORTANT Set dip switch No 7 and No 8 of SW1 to OFF to return the appliance to Normal combustion 17 Close hot...

Page 40: ...ly 6 External Device Selection Dip Switches Explained FORCED COMBUSTION GAS TYPE NORMAL LPG NATURAL GAS OFF ON SW2 OFF ON SW2 OFF ON SW1 1 off 1 on 7 off 2 off 2 off 8 off 3 3 FORCED LOW MODEL CHOICE...

Page 41: ...5 deg C Infinity factory setting Temperatures Remotes Connected off on SW1 off on SW1 off on SW1 1 1 1 If the remote is accidentally disconnected the unit would revert to 55 C 2 2 2 3 3 3 4 4 4 5 5 5...

Page 42: ...42 DIMENSIONS Infinity K32i and HDC1500i Infinity K32e and HDC1500e...

Page 43: ...43 DIMENSIONS Infinity K20i K26i HDC1000i and HDC1200i Infinity K26e and HDC1200e...

Page 44: ...ties nominal condit Hi net calorific value Hs gross calorific value G20 Nat Gas Input Qn Hi Hs Useful output Pn 53 6 59 5 56 53 6 59 5 56 kW G20 Nat Gas flow ref conditions Vr 5 7 5 7 m3 hr G25 Nat Ga...

Page 45: ...as Consumption Capacities nominal condit Hi net calorific value Hs gross calorific value G20 Nat Gas Input Qn Hi Hs Useful output Pn 43 5 48 31 45 9 43 5 48 31 45 9 33 0 36 7 34 9 kW G20 Nat Gas flow...

Page 46: ...Model Name REU KM3237WD E REU KM3237WDHD E REU KM3237FFUD E REU KM3237FFUDHD E Declared Load Profile on Energy Label XXL XXL Energy Efficiency Class A A Water Heating Efficiency wh 92 2 92 2 Annual E...

Page 47: ...FUDHD E Declared Load Profile on Energy Label XXL XXL Energy Efficiency Class A A Water Heating Efficiency wh 90 90 Annual Electricity Consumption AEC kWh annum 14 14 Annual Fuel Consumption AFC GJ an...

Page 48: ...M2035FFUDHD E Declared Load Profile on Energy Label XXL Energy Efficiency Class A Water Heating Efficiency wh 88 1 Annual Electricity Consumption AEC kWh annum 13 Annual Fuel Consumption AFC GJ annum...

Page 49: ...49 FLOW CHART...

Page 50: ...50 WIRING DIAGRAM Infinity K32 5 amp...

Page 51: ...51 WIRING DIAGRAM Infinity K20 K26 5AMP FUSE...

Page 52: ...52 DIAGNOSTIC POINTS Infinity K20 K26 Infinity K32 Y Y...

Page 53: ...53 WATER FLOW CHARACTERISTICS Infinity K32 Infinity K20 K26...

Page 54: ...54 LETTER OF COMPLIANCE...

Page 55: ...55 CE CERTIFICATE...

Page 56: ...56 CE CERTIFICATE...

Page 57: ...hut off valves Put a bucket under the filter at the bottom of the water heater to catch any water that is contained inside the unit Unscrew the water filter Rinse the filter to remove any debris Insta...

Page 58: ...58 COMMISSIONING SHEET...

Page 59: ...59 SERVICE RECORD...

Page 60: ...maintenance contact Rinnai or your supplier Below is reported the flushing procedure of the heat exchanger Flushing the heat exchanger MAINTENANCE Coastal installations Installations located in or ne...

Page 61: ...unction with storage tanks Any application that uses Rinnai water heaters in conjunction with a flow return system Water heaters installed as components of centralised bulk hot water systems Situation...

Page 62: ...will replace the product with a comparable product at Rinnai s discretion If a component or product returned to Rinnai is found to be free of defects in material or workmanship or damaged by improper...

Page 63: ...ating and improving products and reserve the right to alter model specifications without prior notice Model Infinity K20i HDC1000i K26e HDC1200e and K26i HDC1200i Installation Internal or external dep...

Page 64: ...8 531880 E mail info rinnaiuk com Web www rinnaiuk com CONTACT HEATER DETAILS Model Number _____________________________________________ Serial Number _____________________________________________ Dat...

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