Rinnai REU - 16 FUA - E User Manual

Installation and User Manual

REU - 16 FUA - E

“Infinity 16 i”

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.

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CONTENTS

Contents………………………………………………………………..…………………3

User Instructions.....................................................................................................	4
Features and Benefits………………………………………………..………….5
Important Information…………………………………………...……..………..6
Operation without Remotes……………………………………………….……8
Temperature Controls…………………………………………….……………..9
Caring for the Infinity..................................................................................	15
Error Messages…………………………………………………………………16
Restarting the Rinnai Water Heater………………………………………….18
Installation Instructions…………………………………………….………..…………19
UK Installation Instructions…………………………………………………….20
Unpacking Rinnai Water Heater…………………………….………………...21
Operation Principle……………………………………………...……………...22
Main Components………………………………………………..……………..23
Installation Instructions……………………………………………….………...25
Flue Requirements……………………...…….………………………………..30
Temperature Controls…………………………………………………………..34
Testing…………………………………………………………………......…….37
Gas Pressure Setting…………………………………………………….....….38
Dip Switch Setting………............……………………………………………...40
Dimensions…………………………...........................………………………..41
Technical Details..……………………………………............………………...42
Flow Chart…….………………………………………………......………..……43
Wiring Diagram…….……………………………………………………………44
Diagnostic Points…………………………………………………………….....45
Letter of Compliance……………………………………………………....…...46
CE Certificate……………………………..……………………………………..47
Commissioning Checklist…………………...………………………………….48
UK Warranty………………………………….………………………………….49
Specification…………………………………..…………………………………50
Service Contact……………………………….…………………………………51

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USERS INSTRUCTIONS

The following instructions are designed for the user of the water heater.

The user may not install or adjust the appliance in any way that requires the removal of the front of the unit. To remove the front cover of the unit you must be certified competent to do so. Information for the Installer is given on page 22.

All work done on this appliance must be done by a qualified gas engineer. A qualified gas engineer must carry an up to date CORGI Registered Gas Installer picture identification card while working on gas appliances. If you are unsure do not be afraid to ask the engineer to show you the card. If you are still not satisfied call CORGI on 0870 401 2300 and verify the engineers name with their database. This is for your own safety.

Responsibilities of the USER

The user must abide by all warnings given in this book. The user must only reference the user section of the book, and may not carry out any procedure listed in the installer section.

The user must have the unit checked and maintained annually by a gas engineer.

The user must periodically check the water filter on the inlet to the appliance.

The user must not use the appliance in any way that it was not meant to be used. The user may only use the heater as detailed in the User portion of this manual.

The user must not store or use any flammable vapours or liquids in the vicinity of this or any other appliance.

The user should familiarise themselves with the water heaters gas service valve and the main gas valve to the premises.

IF YOU SMELL GAS

Isolate the gas supply and get out of the building. Do not try to light any appliance.

Do not turn any light or other electrical switch on or off. Do not use any telephone in the building.

Call your gas engineer from a safe location and follow their instructions.

If you cannot reach your gas engineer ring the following:

TRANSCO 0800 111 999

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FEATURES AND BENEFITS

Congratulations on purchasing the Technologically Advanced, Temperature Controlled, Rinnai Hot Water System.

x The Rinnai Infinity 16i will NEVER RUN OUT of hot water. As long as electricity, water, and gas supplies are connected, hot water is available when hot water taps are open.

x Built into the main micro-processor is the facility to LIMIT THE MAXIMUM TEMPERATURE of the hot water supplied. The water temperature may be set to various temperatures. This is particularly useful when the hot water unit is installed where young children or the infirm may be using the hot water. If required, the temperature can be changed via the control pad on the front of the unit or with a localised controller. For further information, please contact Rinnai.

x Rinnai Infinity internal units are powered flue appliances. This makes them COMPACT, saving both floor and wall space.

x The temperature of outgoing hot water is CONSTANTLY MONITORED by a BUILTIN SENSOR. If the temperature of the outgoing hot water rises to more than 55°C the burner is shut OFF and only turned ON again when the temperature falls to below the selected temperature.

x The burner lights automatically when the hot water tap is opened, and extinguishes when the tap is closed. IGNITION IS ELECTRONIC, so there is no pilot light. When the hot water tap is off, no gas is used.

x The 16i has a built in controller on the front of the unit for easy control. Two additional external temperature controllers can be mounted remotely from the heater. This offers the following additional features:

Localised temperature setting. Diagnostic message.

Error Codes.

x Temperatures selected at the controllers are retained in the SYSTEM MEMORY when the controller gives up priority or the system is turned off. Temperatures over 550C will revert to 550C when power and/or priority is regained.

x Operating NOISE LEVEL IS VERY LOW.

x ERROR MESSAGES ARE DISPLAYED on the Temperature Controllers, assisting with service.

x FROST PROTECTION device built in as standard.

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IMPORTANT INFORMATION

Excessively hot water is dangerous, especially for young children and the infirm. The water heater allows you to control the temperature of your hot water to safe levels.

Water temperature over 50ºC can 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 before bathing or showering.

Burns from hot water taps can result in very severe injuries to young children.

Hot water at 65°C can severely burn a child in less than half a second. At 50°C it takes five minutes.

Burns can occur when children are exposed directly to hot water or when they are placed into a bath which is too hot.

Do stay with children

whenever they are in the bathroom.

		Do take them out of the bathroom if	x Consider child—resistant taps
		you need to answer the phone or	or inexpensive tap covers, both
		door.	of which prevent a child’s hand
			from turning on the tap.
		Do test the temperature of the water	x Consider reducing the
		with your elbow before placing your
		child in the bath.	temperature of the water
		Do make sure that the tap is turned	supplied to the hot tap to 500C.
	DO		This approach can be extremely
		off tightly.
		Do consider setting your Rinnai	valuable because it requires a
			one time action for a long term
		Infinity or HD50i at a maximum	reduction in risks of scalds.
		temperature of 500C.	This type of automatic protection
		Do install a child proof tap cover	is important during times when a
			parent or carer has been
		OR,	distracted.
		Do install a child resistant tap.

DO

NOT

Do not leave a toddler in the care of another small child. The older child may not have safely set the temperature.

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IMPORTANT INFORMATION

Always check water temperature before	Hot water may go cold without warning at
use.	very low water flows (less than 3 l/min.)

OFF

Refer to warning about hot water on
page 16 for important safety information.
The Infinity 16i controls the water tem-	If freezing temperatures
perature automatically. For high tempera-	are expected, turn off the
tures it may reduce the flow. The water	water and gas, and drain
from the hot tap may be reduced after	the water heater.
the temperature shown on the remote
control is raised. The water flow may also	1. Water Off
vary with the temperature of the incoming
water supply.	2. Gas Off	Drain
	Drain
	3. Drain Water	Water
	If the power is left on the	Gas
	Automatic Frost Protection
	will prevent the unit from
	Freezing. Frost protection
	is standard on all units.
Keep flammable materials, trees, shrubs,	Do not touch the flue outlet. Do not insert
chemicals, etc. away from the flue outlet.	objects into the flue outlet.

On cold days steam may be discharged from the flue outlet. This is normal, do not be alarmed. It does not indicate a fault.

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TEMPERATURE CONTROLS

The purpose of a Temperature Controller is to enable the user to have complete control over the hot water supply. Used correctly, the Infinity will supply hot water at the temperature selected, even when the water flow is varied, or when more than one tap is used. Adjustments to the operation of your hot water unit can be made with any of the Temperature Controllers. Each Temperature Controller can be individually programmed.

Up to three Temperature Controllers can be fitted with the Infinity 16i. One of these controllers comes as standard mounted on the water heater. Additional Temperature Controllers are an optional extra.

The controllers have temperature selection, water flow volume, and water supply temperature functions.

Various water temperatures (°C) can be selected as follows:

35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 55, 600C

750C can be set on the dip switches.

When the remote is turned on the temperature will default to 400C.

While the hot water is running, the maximum selectable temperature will be 48°C. This provides additional safety for the consumer.

Suggested temperatures are:

Kitchen 50°C - 60°C; Bathroom 39°C - 43°C

These temperatures are suggested starting points for selection. You may find higher or lower temperatures are more comfortable. Maintaining lower temperatures helps to save energy. To obtain water temperatures lower than 35°C simply add cold water.

Up to three controllers can be used for one Infinity 16i. When multiple temperature controllers are used the only remote that can change the temperature is the one with priority. This is shown by the lit priority indicator. When the Kitchen Controller has priority the other remote’s priority indicator will go out. When the Bathroom Controller has priority the other remote’s priority indicator will flash. A different remote can only take priority of the system by pushing the priority button when the priority lamp is out. This means that while the Bathroom Controller has priority no one else can alter the temperature.

To take priority with the Kitchen Controller from the Bathroom Controller the priority button on Bathroom Controller must be pressed to give priority away.

The temperature selected by the controller with priority will be available to all outlets.

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TEMPERATURE CONTROLS - OPERATING

Remote temperature controllers are a feature that provides control over the water temperature. The Rinnai Infinity 16i water heater can be operated with 1, 2, or 3 temperature controllers. The controller MC-45-SR-EU comes as standard with this water heater installed into the front panel.

Digital Monitor	Priority Indicator	Priority Button
Indicates the tem-	Indicates that the	Used to transfer con-
perature selected.	controller has com-	trol between tem-
Error message	mand of the system	perature controllers.
flashes in the event	(glowing,) or that the	The controller with
of a fault.	system is free to take	priority has command
	command of (off.)	of the hot water de-
		livery temperature.

Temperature	ON / OFF Button
Buttons	Used to switch hot
Used to select hot	water system on
water delivery	and off.
temperature.

NOTE:

Each time a button is pressed, a BEEP will sound.

The BEEP sound can be muted by depressing the Temperature Controller Up and Down buttons simultaneously for more than 3 seconds until the controller beeps.

This can be done for each Temperature Controller. To return to original settings, repeat this step.

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TEMPERATURE CONTROLS - OPERATING

Using the Temperature Controllers.

Press the ON/OFF button on a temperature controller. The system will become active, the temperature will default to 400C and the controller that turned the system on will have priority. The temperature setting on the controller will light up.

Adjusting Temperature

Simply press the Hot Water Temperature Up or Down arrow button until the desired temperature is displayed on the digital display.

COOLER HOTTER

To operate the heater, simply turn any hot water tap on. This will automatically light the burner providing hot water. The red IN USE indicator will glow

amber on the temperature controller.

Caution: Always check water temperature before use.

Note: With the hot water tap open a temperature of 500C or higher can not be selected. For safety reasons temperature ‘priority’ cannot be transferred between controllers when a hot water tap is open.

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TEMPERATURE CONTROLS - OPERATING

Using 2 or more Temperature Controllers.

Switching the system ON.

The hot water system and all controllers can be

switched ON and OFF from any controller by pressing . the ON/OFF button as shown. When the system is

turned ON the water temperature display will be lit.

During normal operation the system is left ON. Do not push the ON/OFF button when water is running.

Ensure the system is switched On by verifying the temperature display is lit. Ensure the controller has priority by verifying the ON LED indicator is lit. If it is not then press the Priority button once. This gives the local controller priority of temperature over the system.

Select the desired temperature using the TEMP. SELECTOR buttons. The selected temperature will be displayed on all controller displays. This is the water temperature which will be supplied from the heater.

COOLER HOTTER

Using hot water.

Open the hot water tap. The appliance will be activated and the IN USE indicator will be lit.

When temperatures 500C and above are chosen the High Temp lamp will be lit.

Bathroom temperatures should be no more than 500C.

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TEMPERATURE CONTROLS - INFORMATION

Do not push the ON/OFF button on the Master controller after transferring priority of temperature selection to a Secondary controller as the system will shut down.

Do Not Turn OFF

the Master

Controller

Temperature priority can not be switched to another controller when the water is flowing through the water heater.

		400C
Controller 1				Controller 2
in use				cannot take
				priority

If a temperature 500C or higher has been selected on a controller and priority of temperature selection is transferred to another controller, then back again, the temperature on the controller will automatically drop to 50(or 42)ºC. If the set point is 50(or 42)0C or less it will not alter. This is a safety feature.

First	Another	First
Controller	Controller	Controller

Depending on the weather conditions and the length of the pipe between the heater and the tap 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.

480C

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CARING FOR THE INFINITY

Maintenance

Even if there does not seem to be a problem with the water heater it is required in the UK that all gas appliances are serviced every year by a certified gas engineer. This is to ensure continued safety of the gas appliance. If you need a recommended service engineer contact Rinnai or your supplier.

Care

When the appliance casing, operation panel, and remote controls surfaces become dirty gently wipe them clean with a soft, damp cloth. Do not use detergents on these parts.

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ERROR MESSAGES

Rinnai water heaters have the ability to check their own operation continuously. If a fault occurs, an error code will flash on the Digital Display if you have temperature controllers installed. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call. Please quote the code displayed when enquiring about service. Some of these remedies can not be checked by the user because they require the front to be taken off of the unit. They are included so that you can give the information to the gas engineer.

Code	Fault	Remedy
Displayed
-	Noticeable reduction in water	Inlet water filter needs to be cleaned.
	flow
10	Not enough combustion air	Check for physical blockages around
		air intake or exhaust. Check combus-
		tion fan.
11	No Ignition / Gas supply	Check gas valves, gas supply and
		ignition unit.
12	Flame failure / Earth Leakage	Check gas valves and gas supply.
		Check flame rod.
		Check earth wire lead.
		Check remote control.
14	High flame safety device	Check overheat circuit
16	Over temperature warning	Modulating control valve problem or
		water flow control valve problem
32	Outgoing water temperature	Check Hot Water Thermistor and wire
	sensor faulty
34	Combustion Air temperature	Check Air Intake Thermistor and wire
	sensor faulty
52	Gas modulating valve faulty	Check gas modulating valve and pcb.
61	Combustion fan failure	Check Combustion Fan
71	Micro-processor failure or Sole-	Check solenoids and pcb.
	noid circuit failure
72	Flame rod circuit error	Check flame rod and pcb.

*In all cases, you may be able to clear the Error code by turning the hot water tap OFF, then ON again. If this does not clear the error, try pushing the On/Off button OFF then ON again. If the Error Code still remains contact Rinnai or your nearest service agent for advice.

**Faults caused by insufficient gas/water supply or gas/water quality and installation errors are not covered by the manufacturer’s warranty.

Regular maintenance should be performed by a competent person in accordance with the local regulations at least once annually.

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