Rinnai E110CN, E110CP, E75CN, E75CP user manual Requirements of the water system

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9Starting up: Filling and de-aerating the boiler and installation

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CAUTION

NOTICE

NOTICE

WARNING

CAUTION

Observe the following rules of safety:

-All work on the unit must take place in a dry environment.

-Rinnai units may never be in operation without their housing, except in connection with maintenance or adjustments (see Chapter 12 and 13).

-Never allow electrical or electronic components to come into contact with water.

NOTICE

Carry out the following tasks in connection with maintenance, etc. to an already- installed unit:

-Shut down all programs

-Close the gas shut off valve

-Shut off the power at the main power switch

-Close the service valves (system supply and return)

NOTICE

Take note of the following when maintenance or adjustments are needed:

-The unit must be able to function during these activities; for this reason, the unit’s supply voltage, gas pressure and water pressure must be maintained. Ensure that this is not a source of potential danger during these activities.

Following maintenance or other activities; always check the installation of all parts through which gas flows (with bubble test using leak-search spray).

9.1 Requirements of the water system

Installation & Servicing Instructions Rinnai E-Series

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WARNING

WARNING

NOTICE

Before filling the heating system, the complete system, including all zones, must be thoroughly cleaned and flushed to remove sediment. Flush until clean water runs free of sediment. Rinnai suggests using an approved system cleaner to flush the system, but not the boiler. See the Rinnai Boiler Applications Manual for furtherinformation and for a list of approved cleaners.

Approved antifreezes are Noble NoburstAluminum, Rhomar RhoGardAluminum Safe Multi-Metal. Never use salt bedding exchangers, reverse osmosis, D.I., or distilled water for filling the heating system.

Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage of seals and gaskets in boiler and system could occur, resulting in substantial property damage.

The central heating installation needs to be filled with potable water.

Use only potable water or approved glycol for filling the heating system. When the water hardness of the filling water exceeds > 10.5 gpg (200 mg/L) and the volume of the installation > 20L/kW (5.2 gallons/3,412 BTU) the water has to be treated until below the maximum value of 10.5 gpg (200 mg/L). The pH value of the installation water must be between 6.5 and 8.5.

Check the The pH value using a digital pH meter that has been properly calibrated or by having the water analyzed by a water treatment company.

If pH differs from above, contact Rinnai engineering for further assistance.

Failure to adhere to the water quality requirements will result in a void of war- ranty.

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Contents Instructions Contents of instructions Subject to technical changesUpdating of documentation Content Designated use Safety and general instructionsSymbol definitions Hazard definitionsFollowing instructions must be followed What to do if YOU Smell GASFollow these instructions for the space heating water Tools, materials and additional equipmentDisposal Regulations and guidelines Condensing Description of the boilerRoom sealed boiler ModulatingPackaging and transportation Scope of deliveryTransportation 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 Expansion tank Safety valveLow water cut off 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 pipeTo the boiler. See the list on Vent system and air supply systemIntake / Exhaust Guidelines Agency2a Examples vent and air supply systems concentric 2b Examples vent and air supply systems parallel Parallel system see Installation of the vent systemConcentric 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 Parallel system Combustion air and vent piping lengthsCalculation of equivalent length vent system Total equivalent length Concentric systemCalculation of compensation factor Boiler type E75 E110Room Air System indoor combustion air Unconfined SpaceConfined Space Louvers and GrillsLocation Using Indoor Air For Combustion Using Outdoor Air For CombustionAre used must have a Volt free contact Connecting incoming powerElectrical connections Connection terminal E-SeriesElectrical diagram Electrical ladder diagram Technical read out Boiler controlsGood-state or standard 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 valvePress the Mode-button for 5 seconds AdjustmentsAltering adjustments Press the STORE-button to confirm the code code blinks1Parameter Mode Outdoor reset Activating factory settings green button function Boiler and/or the installationIsolating the boiler Commissioning Testing for gas leaks Testing the Ignition Safety shut off deviceStart up of the boiler Checking for contamination Type of boilerBoiler needs maintanance Follow the next procedure Checking of the zero pressure controlChecking the O2 Installing the casing Measuring the ionization currentInspection MaintenancePeriodic examination of venting systems and boiler TechnicianMeasuring the inlet gas pressure Checking and adjusting the gas/air ratioVisual inspection for general signs of corrosion 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 referenceExternal safety contact is active BlocksBlock 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 PumpErrors ErrorRectify the short-circuit If necessary replace this part Disconnect voltage from the boiler and check the fuse F2 Check the 24 Volt ConnectionCheck Disconnected Components for short-circuiting Check the data in Error mode Ionisation flow Ionisation cable or O2 settingGas Software error con Trol unit Reset the boilerRectify the prece Ding error Error persists After reset Software error Control unit Software error Control unit Error Remove Voltage from the boiler and check fuse F2 Check the 24 Volt ConnectionsCheck 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 NTCFan is not Spinning Fuse is working and the error is repeatedWiring and voltage are OK and error is repeated If necessary Replace the fanCheck the wiring Wiring is OK but the error is repeatedReplace 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 waterRS100 with outdoor Sensor Room sensor-On Key of the central heating program is not switched onHot water but no central heating Three-port valve is not circulating to central heatingKey pump program Is on Incorrect flow reducing Valve Insufficient quantity of hot waterHot and cold water Connection to the boiler Mixed up Absence Positive resultsTemperature drop of the DHW DHW power for the boiler is set too lowFlow 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 Heatfab Parts list vent systemVent Products 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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