Rinnai Understanding Boiler Controls: E110CN Error Codes and CH Pump Overrun
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8Boiler controls

Installation & Servicing Instructions Rinnai E-Series

Example

Example

i NOTICE

The boiler is provided with a fully automatic microprocessor control, called CMS Control Management System. This control simplifies operation by undertaking all major control functions. Initially when power to the unit is switched on it will remain on standby. There is no indication LED on, until one of the program buttons is pressed. The control panel display will show the relevant state. When the installation is empty the display will show FILL.

The various parameters can be called up in two ways:

The Good-state or standard read out

The first way shows a simple display read out.

The boiler in operation will always show 'Good'. When a message is necessary this will be shown instead of Good.

Technical read out

The second way is a technical read out. In normal situations the following will be shown:

•on the left the status in which the boiler is active;

•on the right the supply temperature in °F;

Alternately indicated by:

•the water pressure in the installation in PSI.

When a message (error or blocking code) is necessary this will be shown instead of the technical read out.

To switch over from the Good-state to the Technical read out (and vice versa): - Press the STEP-button for 5 seconds.

When the system has been filled the automatic de-aeration program starts, when a program has been selected, by pressing the button for Central Heating, DHW or pump

program (, of ). The program takes 17 minutes and stops automatically. After this the unit will function normally. (See also 'Filling and de-aerate the boiler and installation, chapter 9).

On a call for heating or hot water the control system will select the required water control temperature. This water temperature is called the T-set value. On a call for central heating the boiler ignites first at low input. The input is then changed slowly to match the load required. The boiler operates in this way to avoid excessive water noises and temperature overshoot. On a call for domestic hot water supply the T-set value of central heating return water temperature is monitored. Depending on the amount of domestic water which is withdrawn from the DHW fascility, the central heating return water temperature, from which the input is adjusted, will vary.

Operation indication

(in the first display position by technical read out)

0No heat demand

1

Fan pre/post purge

2Ignition phase

3

Burner active on central heating

4

Burner active on DHW

5

Fan check

6Burner off when room thermostat is demanding

7

Pump overrun phase for central heating

 

Pump overrun phase for hot water

8

 

Burner off because of to high flow temperature

9

 

Automatic de-aeration program

A

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Contents Instructions Subject to technical changes Contents of instructionsUpdating of documentation Content Safety and general instructions Symbol definitionsDesignated use Hazard definitionsFollowing instructions must be followed What to do if YOU Smell GASTools, materials and additional equipment Follow these instructions for the space heating waterDisposal Regulations and guidelines Description of the boiler Room sealed boilerCondensing ModulatingScope of delivery Packaging and transportationTransportation Installation Requirements for the installation roomFitting the boiler Dimensions E75CPConnection for combustion air supply and vent system Plumbing Kits Plumbing KitClearances from boiler Low Loss HeaderTechnical specifications CSAConnecting the boiler Central heating systemPlumbing Kit installation Compression fittingsInstallation & Servicing Instructions Rinnai E Safety valve Low water cut offExpansion tank With the boilerUnderfloor heating system plastic pipes Gas supply connectionGas connection with natural gas Gas pipingGas connection with propane gas Propane Supply Pressure RequirementsHot water supply Condensate drain pipeVent system and air supply system Intake / Exhaust GuidelinesTo the boiler. See the list on Agency2a Examples vent and air supply systems concentric 2b Examples vent and air supply systems parallel Installation of the vent system Concentric system seeParallel system see Room Air System outdoor combustion airRecommended vent/air intake terminal position Terminal positionsOccur to building products in the vicinity see Item Description Flue Material United StatesDimensioning of the exhaust and air intake duct Combustion air and vent piping lengths Calculation of equivalent length vent systemParallel system Total equivalent length Concentric systemCalculation of compensation factor Boiler type E75 E110Room Air System indoor combustion air Unconfined SpaceLouvers and Grills Confined SpaceLocation Using Indoor Air For Combustion Using Outdoor Air For CombustionConnecting incoming power Electrical connectionsAre used must have a Volt free contact Connection terminal E-SeriesElectrical diagram Electrical ladder diagram Boiler controls Good-state or standard read outTechnical read out Operation indicationExplanation of the function buttons Requirements of the water system Filling the heating system Freeze protectionWith water will have to be done Do not try to light the burner by hand Close main gas shut off valveAdjustments Altering adjustmentsPress the Mode-button for 5 seconds Press the STORE-button to confirm the code code blinks1Parameter Mode Outdoor reset Boiler and/or the installation Activating factory settings green button functionIsolating the boiler Commissioning Testing the Ignition Safety shut off device Testing for gas leaksStart up of the boiler Type of boiler Checking for contaminationBoiler needs maintanance Follow the next procedure Checking of the zero pressure controlChecking the O2 Installing the casing Measuring the ionization currentMaintenance Periodic examination of venting systems and boilerInspection TechnicianChecking and adjusting the gas/air ratio Visual inspection for general signs of corrosionMeasuring the inlet gas pressure Carrying out a pressure test of the heating systemMaintenance activities Replace the gasket with a new oneCondensate trap Condensate trayWarranty Visual inspection of the flameParts of the boiler G KBlocks and Errors Error indication short referenceBlocks External safety contact is activeBlock Check flow through the installation Execute Parameter-Reset Check flow through the boiler and DHW fascilityCheck the sensors NTC 1 and NTC Check the main Power supply Check the boiler PumpError ErrorsRectify the short-circuit If necessary replace this part Check the 24 Volt Connection Disconnect voltage from the boiler and check the fuse F2Check Disconnected Components for short-circuiting Ionisation flow Ionisation cable or O2 setting Check the data in Error modeGas Reset the boiler Software error con Trol unitRectify the prece Ding error Error persists After reset Software error Control unit Software error Control unit Error Check the 24 Volt Connections Remove Voltage from the boiler and check fuse F2Check Disconnected parts for wear and tear Software error Control unit Temperature of 36 is displayed at position If necessary Replace the flow SensorCheck actual flow temperature Check flow sensor NTC1Check actual return temperature Check return Sensor NTCFuse is working and the error is repeated Wiring and voltage are OK and error is repeatedFan is not Spinning If necessary Replace the fanWiring is OK but the error is repeated Check the wiringReplace Sensor Shut down of return sensor T2 Contact for supply sensor T1 open Check the data Error mode Software error Control unit Other errors Central heating but no hot waterKey of the central heating program is not switched on Hot water but no central heatingRS100 with outdoor Sensor Room sensor-On Three-port valve is not circulating to central heatingKey pump program Is on Insufficient quantity of hot water Hot and cold water Connection to the boiler Mixed upIncorrect flow reducing Valve Absence Positive resultsDHW power for the boiler is set too low Temperature drop of the DHWFlow reducing valve Incorrect choice Installation Radiators do not get hot enough or warming up takes too longSpare parts Parts casing E-SeriesInstallation Manual E-SERIES DescriptionParts heat exchanger E-Series OSS1 OSS2 Clamp BAR TOP Part H.EX. Long Parts rear wall E-Series OSS1 OSS2 Parts pipes E-Series Description Parts electrical components E-Series 166 167101 Parts list vent system Vent ProductsHeatfab Rinnai/ UbbinkCommon venting guidelines 103104 105 106 107 800000012 9/2009

E75CP, E110CN, E75CN, E110CP specifications

Rinnai is a leading name in the heating industry, recognized for producing highly efficient and reliable tankless water heaters. Among their popular models are the Rinnai E75CN, E75CP, E110CP, and E110CN, each designed to cater to various household needs and preferences.

The Rinnai E75CN and E75CP are both remarkable for their compact size and impressive heating capabilities. The E75CN is a natural gas model, while the E75CP runs on propane. These units are designed to deliver a maximum flow rate of up to 7.5 gallons per minute, ensuring that multiple fixtures can be used simultaneously without a dip in performance.

Both models incorporate advanced temperature control technology, allowing users to set their desired water temperature with precision. The units feature a durable heat exchanger, constructed from high-grade stainless steel, which not only promotes longevity but also helps in preventing corrosion. Additionally, they come with built-in safety features, such as freeze protection and an overheat cut-off system, ensuring safe operation in varying conditions.

Moving on to the Rinnai E110CP and E110CN, these tankless water heaters are designed for larger households with higher hot water demands. The E110CP operates on propane, while the E110CN utilizes natural gas. These units deliver a maximum flow rate of up to 11 gallons per minute, making them ideal for simultaneous use in multiple bathrooms, kitchens, and laundry rooms.

The E110 models showcase Rinnai's Smart Technology, which optimizes energy consumption by adjusting the heating output based on the demand. This not only maximizes efficiency but also significantly reduces energy costs. They are equipped with digital controls and diagnostics, providing users with real-time information and the ability to troubleshoot easily if any issues arise.

In terms of installation, all four models are designed for versatility. They can be installed indoors or outdoors, giving homeowners flexibility based on their space and preference. With their compact design, these units require less space compared to traditional tank heaters, making them a suitable choice for modern homes.

Overall, Rinnai's E75CN, E75CP, E110PC, and E110CN models represent cutting-edge technology in tankless water heating. Their efficiency, safety features, and advanced technology make them an excellent choice for homeowners looking to upgrade their hot water systems. With Rinnai, users can enjoy the convenience of continuous hot water without sacrificing energy efficiency.
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