Related Manuals for Rinnai REU-VR2626W Series
Summary of Contents for Rinnai REU-VR2626W Series
- Page 1 SERVICE MANUAL To Suit Models: REU-VR2626WB (B26) REU-VR2426WS (S26) REU-VRM2626WG (INF26) Does NOT Suit any other Models...
- Page 2 All Rinnai products are certified by the Australian Gas Association as compliant to relevant Australian Standards. All Rinnai products are Certified to WaterMark by SAI Global. WaterMark certification is awarded to products and fittings complying with safety and water contamination standards.
- Page 3 © Copyright Rinnai Australia Pty Ltd ABN 74 005 138 769 All rights reserved Produced by Engineering & Technical Group No portion or part of this manual may be copied without prior permission from Rinnai Australia. Rinnai Australia reserves the right to make modifications and change specifications without notice.
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Page 4: Table Of Contents
17. Gas Conversion Procedure ..................27 18. Dismantling for Service ..................28 19. Parts List ........................ 37 REU-VR2626WB ......................38 REU-VRM2626WG ......................40 REU-VR2426WS ......................42 20. Exploded Diagrams ....................45 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 1 - Issue 3 - 13/11/14 ©Rinnai... -
Page 5: Glossary Of Terms And Symbols
ø diameter temperature rise above ambient modulating valve thermal efficiency thermistor temperature of incoming water temperature of outgoing water REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 2 - Issue 3 - 13/11/14 ©Rinnai... -
Page 6: Specifications
Cables are supplied with water controllers. Alternatively, two core sheathed (double insulated) flex with minimum cross sectional area of 0.5 m² may be used. Maximum individual cable runs should not exceed 50 m. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 3 - Issue 3 - 13/11/14 ©Rinnai... - Page 7 Cables are supplied with water controllers. Alternatively, two core sheathed (double insulated) flex with minimum cross sectional area of 0.5 m² may be used. Maximum individual cable runs should not exceed 50 m. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 4 - Issue 3 - 13/11/14 ©Rinnai...
- Page 8 • Temperature Cutout: If the delivered hot water temperature rises above the required delivery temperature for a number of seconds, the gas supply is stopped. Combustion Specifications Refer to dataplate on appliance. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 5 - Issue 3 - 13/11/14 ©Rinnai...
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Page 9: Water Flow Rates And Pressure Characteristics
Water Flow vs Pressure Graphs 26.5 2426/2626 Inlet pressure (kPa) P(kPa) 10.3 12.1 13.8 15.6 18.2 19.4 P(kPa) 20.4 21.4 22.1 24.2 25.5 26.5 26.5 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 6 - Issue 3 - 13/11/14 ©Rinnai... -
Page 10: Dimensions
Hot: Length (from base) Gas: Fitting Diameter Cold: Fitting Diameter Hot: Fitting Diameter * Please note that this measurement is to the left of the centre line. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 7 - Issue 3 - 13/11/14 ©Rinnai... -
Page 11: Water Controllers
MC-503RC water controller. Wireless Installations Up to TWO BC-100V water controllers can be installed. The FOURTH water controllers in any installation MUST BE a MC-503RC or a MC91Q. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 8 - Issue 3 - 13/11/14 ©Rinnai... - Page 12 STEP 1 for the controller moved from the kitchen to the bathroom. Then perform STEP 1 for the controller moved from bathroom to the kitchen. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 9 - Issue 3 - 13/11/14 ©Rinnai...
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Page 13: Cutaway Diagram
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Page 14: Smartstart
A schematic of the Smartstart® system installed in conjunction with a Rinnai continuous flow water heater and temperature controller is shown in Fig.2 below. - Page 15 Principle of Operation - Solar Hot Water Systems Only Figure 3 - Principle of Operation - Solar Hot Water Systems Only REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 12 - Issue 3 - 13/11/14 ©Rinnai...
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Page 16: Operational Flow Chart
7. Operational Flow Chart REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 13 - Issue 3 - 13/11/14 ©Rinnai... -
Page 17: Operation Principles
The PCB then causes the main solenoid and solenoid valves to close and the burner is extinguished. The combustion fan will continue to operate for some time to purge the combustion chamber. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 14 - Issue 3 - 13/11/14 ©Rinnai... -
Page 18: Main Components
The manifold is attached to the front of the burner module. Each bunsen burner is supplied by two injectors. • A combustion chamber. Integrated into the combustion chamber front panel are the flame rod and ignition electrode(s). REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 15 - Issue 3 - 13/11/14 ©Rinnai... -
Page 19: Time Charts
10. Time Charts Normal Combustion Note: By pass control device fitted to model 2630 only. Mis-Ignition / Flame Failure Abnormal Pre-Purge (Air Supply/Exhaust Blockage) REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 16 - Issue 3 - 13/11/14 ©Rinnai... -
Page 20: Wiring Diagram
Gr/Y (3A) MAIN SOLENOID VALVE ANTI-FROST HEATER SOLENOID VALVE 1 Br B (SMALL) Gr/Y SOLENOID VALVE 2 AC240V 50Hz (On the Manifold) SOLENOID VALVE 3 (LARGE) REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 17 - Issue 3 - 13/11/14 ©Rinnai... -
Page 21: Dip Switch Settings
14 SOLENOID VALVE 2 Br-Bk (On the Manifold) 35∼41 DC11∼13V 15 SOLENOID VALVE 3 Y-Bk (LARGE) 37∼43 12. Dip Switch Settings Contact Rinnai for Dip Switch Settings. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 18 - Issue 3 - 13/11/14 ©Rinnai... -
Page 22: Fault Finding
(page 21) readout of electrical values whilst unit operational. (page 25) REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 19 - Issue 3 - 13/11/14 ©Rinnai... - Page 23 4. Check water flow servo. 5. Check bypass servo. (REU-VM2630WC/WD only) Anti-frost heater does not operate. 1. Check anti-frost heater components 2. Check frost sensing switch REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 20 - Issue 3 - 13/11/14 ©Rinnai...
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Page 24: Component And Circuit Checks
If normal, proceed to b.). Faulty: Replace PCB b) Measure voltage between Main Solenoid connectors. Normal: 37~43 If normal, proceed to Solenoid Valve SV Faulty: Replace Main Solenoid. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 21 - Issue 3 - 13/11/14 ©Rinnai... - Page 25 Check the gas burner pressure changes when set temperature on the water control changes from 37°C to 55°C. Normal: Burner gas pressure changes. Go to Water Flow Servo Circuit. Faulty: Burner gas pressure does not change. Replace Modulating Valve. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 22 - Issue 3 - 13/11/14 ©Rinnai...
- Page 26 If normal, proceed to 2. Faulty: Replace water flow sensor. Note: For controller readout of water flow whilst operational refer maintenance monitor. (Chapter 15) No. 1. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 23 - Issue 3 - 13/11/14 ©Rinnai...
- Page 27 Disconnect relay connector (F ) and measure resistance between the yellow wires on the pipe frost heater at the frost heat side. Normal: 618 Faulty: Replace Anti-frost Heater. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 24 - Issue 3 - 13/11/14 ©Rinnai...
- Page 28 At room temperature resistance should be > 1 M Cool switch to below 2° C then measure resistance. Resistance should be < 1M Faulty: Replace Frost Sensing Switch. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 25 - Issue 3 - 13/11/14 ©Rinnai...
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Page 29: Maintenance Monitor / Error History
2.) The maintenance number will be shown in the Water Temperature display. 3.) Data will be shown in the Clock display. To select the required maintenance number, press the Water Temperature "UP" and "DOWN" buttons. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 25 - Issue 3 - 13/11/14 ©Rinnai... - Page 30 0~999 temperature (Example 55 = 55 C) Bypass servo present recognition positioning Degrees 0~500 (Example 0 = Closed 250 = Half open 500 = Open REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 26 - Issue 3 - 13/11/14 ©Rinnai...
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Page 31: Gas Pressure Setting Procedure
• This feature will automatically shut down after 3 minutes. 16. Gas Pressure Setting Procedure Refer seperate Rinnai document behind front cover of appliance. 17. Gas Conversion Procedure Refer seperate document available from Rinnai. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 27 - Issue 3 - 13/11/14 ©Rinnai... -
Page 32: Dismantling For Service
17. Removal of Thermal Fuse.........36 Unless otherwise stated, re-assembly is the reverse of dismantling. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 28 - Issue 3 - 13/11/14 ©Rinnai... -
Page 33: Removal Of The Front Panel
2) Removal of the PCB Unit a. Remove the front panel. (Refer Item 1.) b. Remove two (2) PCB unit fixing screws and pull out forward. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 29 - Issue 3 - 13/11/14 ©Rinnai... -
Page 34: Removal Of Transformer
7) Removal of the Manifold and Burner unit a. Remove high tension cord and flame rod. b. Remove 2 pin connection of the solenoid valve c. Remove manifold. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 30 - Issue 3 - 13/11/14 ©Rinnai... -
Page 35: Removal Of The Gas Control
Remove combustion chamber front panel. b. Remove burner unit. a. Pull off connectors for gas control modulation valve and solenoid valve. c. Pull off burner unit REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 31 - Issue 3 - 13/11/14 ©Rinnai... -
Page 36: Removal Of Flame Rod And Spark Plug
Remove flame rod and spark plug. 11) Removal of Heat Exchanger Thermistor 2632WC ONLY a. Remove thermistor holder b. Remove 2 pin connector a. Remove of High Tension lead REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 32 - Issue 3 - 13/11/14 ©Rinnai... -
Page 37: Removal Of Bypass Servo
Remove bracket for water connection tube. c. Anti Frost switch Removal of inlet water connection g. Remove bypass servo and water flow servo h. Remove fitting screws of bypass servo REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 33 - Issue 3 - 13/11/14 ©Rinnai... -
Page 38: Removal Of Anti Frost Heater
15) Removal of the Fan Motor a. Remove 4 pin connector to fan motor. b. Remove 2 pin connector of solenoid valve. c. Remove fan motor screws (x 2) REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 34 - Issue 3 - 13/11/14 ©Rinnai... -
Page 39: Removal Of Heat Exchanger
Remove heat exchanger screws k. Pull out heat exchanger screws Remove manifold and burner unit. m. Remove thermal fuse, over heat switch, sparker, hex thermister and back pressure joint. REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 35 - Issue 3 - 13/11/14 ©Rinnai... -
Page 40: Removal Of Thermal Fuse
Remove Thermal Fuse. After removal of thermal fuse fitting procedure is as follows: Heat Exchanger Front Heat Exchanger Right Heat Exchanger Left Heat Exchanger Right REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 36 - Issue 3 - 13/11/14 ©Rinnai... -
Page 41: Parts List
19. Parts List NOTE: Some Part details may have changed since publication of this manual. Contact Rinnai to confirm spare parts details before ordering. “REU-VR2626WB” on page 38 “REU-VRM2626WG” on page 40 “REU-VR2426WS” on page 42 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 37 - Issue 3 - 26/02/15 ©Rinnai... - Page 42 Effective: 26/02/15 Supercedes: 05/12/13 REU-VR2626WB / REU-VR2626WB-50 REU-VR2626WB REU-VR2626WB-50 DESCRIPTION RA PART RJ 11 DIGIT CODE Panel Front - Dune 019-4904000 92095066 * NOTE: These panels do not include screws Panel Front - Dune 92095067 019-4905000 * NOTE: These panels do not include screws 002 Panel Front Packing 580-0039000 005 Outer Case - Dune...
- Page 43 Effective: 26/02/15 Supercedes: 05/12/13 REU-VR2626WB / REU-VR2626WB-50 REU-VR2626WB REU-VR2626WB-50 DESCRIPTION RA PART RJ 11 DIGIT CODE 410 Valve Press Relief 92099944 337-152-000 700 PCB Main 92095055 210-0267000 700 PCB Main 50°C 92095056 210-0269000 701 EC-Cover-2-A 098-1853000 702 Electric Control Cover 098-0627000 703 Sparker 92095026...
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Page 44: Reu-Vrm2626Wg
409 Hot Water Plug Band 553-043-000 92099944 410 Valve Press Relief 337-152-000 92095055 700 PCB Main 210-0267000 92095056 700 PCB Main 50°C 210-0269000 701 EC-Cover-2-A 098-1853000 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 40 - Issue 3 - 26/02/15 ©Rinnai... - Page 45 520-281-010 92072800 827 O-Ring Heat Exchanger 520-255-010 92062207 828 O-Ring Heat Exchanger 520-193-010 92062199 829 O-Ring Heat Exchanger Inlet 520-048-010 92071182 830 O-Ring In/Out Water 520-049-010 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 41 - Issue 3 - 26/02/15 ©Rinnai...
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Page 46: Reu-Vr2426Ws
112 Comb. Chmb Front Panel Packing - 24/26 580-0577000 92086974 113 Electrode 202-156-000 92095598 114 Electrode FR 202-215-000 92099214 115 Packing Electrode 580-0569000 92099216 116 Electrode Holder 538-0572000 92087030 117 Sleeve Electrode 518-035-000 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 42 - Issue 3 - 26/02/15 ©Rinnai... - Page 47 716 Harness Solenoid 290-1746000 92099232 717 Harness Sensor 290-1747000 92099978 718 Fuse Thermal 290-0678000 719 Thermal Fuse Fixing Plate 537-505-000 720 Thermal Fuse Fixing Plate 537-0110000 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 43 - Issue 3 - 26/02/15 ©Rinnai...
- Page 48 520-281-010 92072800 827 O-Ring Heat Exchanger 520-255-010 92062207 828 O-Ring Heat Exchanger 520-193-010 92062199 829 O-Ring Heat Exchanger Inlet 520-048-010 92071182 830 O-Ring In/Out Water 520-049-010 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 44 - Issue 3 - 26/02/15 ©Rinnai...
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Page 49: Exploded Diagrams
20. Exploded Diagrams NOTE: Some Part details may have changed since publication of this manual. Contact Rinnai to confirm spare parts details before ordering. REU-VRM2626WG / REU-VR2426WB / REU-VR2426WS REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 45 - Issue 3 - 13/11/14 ©Rinnai... - Page 50 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 46 - Issue 3 - 13/11/14 ©Rinnai...
- Page 51 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 47 - Issue 3 - 13/11/14 ©Rinnai...
- Page 52 REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 48 - Issue 3 - 13/11/14 ©Rinnai...
- Page 53 Tel: 1800 000 340 Fax: (03) 9271 6622 Rinnai has a Service and Spare Parts network with personnel who are fully trained and equipped to give the best service on your Rinnai appliance. If your appliance requires service, please call our National Help Line. Rinnai recommends that this appliance be serviced every 3 years.