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Inoxstor Pre-Plumbed Water Heater

Installation, Usage and Maintenance Instructions

1.  GENERAL INFORMATION

Thank you for selecting an Immergas Inoxstor pre-plumbed water heater.  This product is the result of extensive research 

and experience in heating system design.  

This manual is an integral part of the product and should be retained. Please read it carefully, as it provides im-

portant information regarding the installation and maintenance of the product.  This manual should be viewed 

as supplementary to the Immergas Audax Heat Pump instructions, which must be read thoroughly.

1.1  INTRODUCTION

The Immergas Inoxstor pre-plumbed water heater is specially designed for use with Immergas Audax heat pumps.  It con-

tains the cylinder, pre-plumbed manifold, Audax controller and interface board, immersion heater and Domestic Hot Water 

safety group. It contains the main components necessary for provision of central heating and production of hot water 

when using an Immergas Audax heat pump.

1.2  TERMINOLOGY

 

Inoxstor

 will be used throughout to refer to the Immergas Inoxstor pre-plumbed water heater.

1.3  WARNINGS

Users of the appliance

This appliance is not intended for use by persons (including children) with reduced physical, sensory or 

mental capabilities, or lack of experience and knowledge, unless they have been given supervision or 

instruction concerning use of the appliance by a person responsible for their safety.  Children should be 

supervised to ensure that they do not play with the appliance.

Read these instructions 

thoroughly

Carefully read the instructions contained in the manual as they provide important information regarding 

safe installation and maintenance. The installation and maintenance must be performed in accordance 

with current standards and according to the manufacturer’s instructions. 

Authorized personnel 

only 

The product should only be installed and maintained by a person qualified in the design and installation of 

heating systems. Failure to properly install or maintain the Inoxstor may lead to injury, death or property 

damage. In the case of failure or malfunction of the appliance, do not attempt to repair it yourself. Please 

contact RVR Energy Technology by email at info@rvr.ie.  Repairs must only be carried out by qualified 

technicians. Failure to comply with these requirements can compromise the safety of the device. 

High temperatures and 

Pressure 

Failure to fit essential safety devices will invalidate the warranty and may cause a dangerous installation.  

All water heaters must be fitted with temperature control to ensure that the domestic water is not heated 

to excessive temperatures.  A blending (mixing) valve must be fitted to all installations to ensure water 

does not exceed 50°C at the point of use. Appropriate safety devices should be installed on the CH circuit 

according to local regulations.   

Hot surfaces 

The Inoxstor has hot surfaces, which could cause burns to skin.  Take care when in proximity to the Inox-

stor or connected pipework and do not touch connected or mounted pipework with bare hands. 

Risk of leaks

This product should not be installed in a location where water leakage is likely to cause damage.  If it is 

installed in such a location (for example an attic or higher floor of a building), a ‘tanked’, waterproof cham-

ber should be created underneath to ensure that any potential leaks from the product and associated 

fittings or pipes are contained and drained away safely.

Transport or handling 

damage 

Before installation, check the Inoxstor for any damage which could have been caused during transport or 

handling. 

Electrical Supply 

The Inoxstor requires a 230VAC 50hz supply to operate.  There is a risk of electric shock if the unit is 

worked on without disconnecting the incoming supply.  Disconnect the electrical supply prior to starting 

any work on or opening any cover on the Inoxstor .

In case of emergency 

In an emergency, such as fire, leaks or other hazardous circumstances, isolate the power supply to the 

Inoxstor if it is safe to do so.  If possible, turn off any isolation valves connected to the Inoxstor.  Turn off 

the heating and close all taps. Following this, seek expert assistance.

Read all the following warnings carefully.  They contain important information about the safe installation 

and operation of the Inoxstor.

Summary of Contents for INOXSTOR 200

Page 1: ...Immergas Inoxstor pre plumbed water heater Installation Usage and Maintenance Instructions Original Instructions 20190917 For use with Immergas Audax Heat Pumps ...

Page 2: ...level termination of discharge 7 4 Electrical Installation 8 4 1 System Wiring 8 4 2 Audax control wiring 9 4 3 Thermostat Wiring 10 4 3 1 Control using 230V mechanical thermostats 10 4 3 2 Control using 230V digital or digital programmable thermostats 10 4 3 3 Control using 230V programmers 11 5 Anti Legionella Timer 11 6 Commissioning 12 7 Filling Flushing and Maintenance 12 7 1 Checking the exp...

Page 3: ... or property damage In the case of failure or malfunction of the appliance do not attempt to repair it yourself Please contact RVR Energy Technology by email at info rvr ie Repairs must only be carried out by qualified technicians Failure to comply with these requirements can compromise the safety of the device High temperatures and Pressure Failure to fit essential safety devices will invalidate ...

Page 4: ...0 Safety Valve to Drain Hot Water Outlet Recirculation All other connections DN15 DN20 22mm 2 2 CONNECTIONS AND COMPONENTS 1 Audax Flow 2 Audax Return 3 Zone 1 Flow 4 Zone 2 Flow 5 Zone 1 Return 6 Zone 1 Return 7 Cold Water In 8 Cold Water Take Off 9 Safety Valve 10 Expansion Vessel 11 Hot Water Out 12 HW Recirculation 3 4 2 1 5 6 10 7 8 11 12 Audax Flow Safety Group Audax Return 3 Way Valve Zone ...

Page 5: ...d valves Refer to sections 2 1 and 2 2 to determine a suitable position for the heater Allow sufficient clearance for access and service Ensure the location allows the Immersion to be removed if required Refer to sections 3 3 and 3 4 to determine which valves and accessories are required Plumb the valves as shown in the rele vant diagrams An isolating valve must be fitted on the cold water supply ...

Page 6: ...Valve The cold water supply pressure must not exceed 3 5 bar The safety group contains a PRV to reduce pressure below this level DO NOT remove the safety group Expansion vessel Expansion must be accommodated using an Expansion Vessel The Expansion vessel must be sized to accommodate the maximum expansion of the system and should be suitable for use with potable water The size of the expansion vess...

Page 7: ...k directly from the tundish Note Where children may play or otherwise come into contact with discharges a wire cage or similar guard must be positioned to prevent contact whilst maintaining visibility Where a single pipe serves a number of discharges such as in blocks of flats the number served should be limited to not more than 6 systems so that any tundish installation can be traced easily If a ...

Page 8: ...e Inoxstor is via the Audax Interface Board To access this carefully remove the cover of the electrical box on the front of the Inoxstor Disconnect the electrical supply prior to removing this cover The Inoxstor requires a 230V 50Hz single phase supply with neutral and earth Connect this to the L N and E terminals on the Inoxstor s Audax Interface Board This must be a permanent supply via a dedica...

Page 9: ...ersion Connect the Audax interface board on the Inoxstor to the Audax using three no cables 2 no 4x0 75mm2 minimum screened 1 no 1x0 75mm2 minimum Connect these cables as shown in the diagram below Important It is necessary to connect terminals no 5 and no 13 on the Audax together If these are not connected the heat pump will run in cooling mode Core Audax Control Board Terminal Audax Terminal Cab...

Page 10: ...W pin 4 3 2 CONTROL USING 230V DIGITAL OR DIGITAL PROGRAMMABLE THERMOSTATS Where the external device requires 230V to operate provide Live Neutral and Earth from either TH1 or TH2 The live should be looped through the switched contact back to the SW pin on the TH1 or TH2 terminal Terminal Pin Use TH1 L To switch Mechanical Thermostat for Zone 1 TH1 N Not used TH1 E Not used TH1 SW From switch Mech...

Page 11: ...d and should be tested to ensure excessive temperatures do not reach the taps and showers Do not reduce the heating period of the anti legionella timer below 4 hours To set the interval rotate the small grey screw C The time shown in the indicator window will rotate between 10s 1m 10m 1h 10h 1d and 10d Select the next higher period than the interval you re quire For example for 7 days choose 10d T...

Page 12: ...at for TH2 Annual maintenance of the system should be carried out See section 7 5 7 FILLING FLUSHING AND MAINTENANCE WARNING DO NOT disconnect power to the Audax in cold weather in order to prevent frost damage Do not turn off power to the audax or disable circulation for longer than is necessary to carry out maintenance If it is necessary to turn off power to the audax for longer periods drain do...

Page 13: ...ocedure for the Temperature Relief Valve if installed Note The water discharged may be very hot 7 4 FILLING THE AUDAX AND CENTRAL HEATING SYSTEM Follow the Immergas Audax Instructions Installation of the Unit section Ensure that water quality guidelines are fol lowed 7 5 ANNUAL MAINTENANCE The Inoxstor should be inspected and serviced annually As a minimum check operation of both pressure relief v...

Page 14: ...ing properly Replace Safety Group if nec essary Discharge of water from Pressure Relief Valve intermittently Inadequate expansion in system Check expansion vessel size and pre charge pressure Water supply pressure exceeds 3 5 bar Check Pressure Reducing Valve is operational Replace Safety Group if necessary Water or steam from Pressure Relief Valve Thermostat fault Check operation of high limit th...

Page 15: ...Ltd Audax 2 Zone Interface Board WURC0029 Inoxstor 200 Immergas Audax 6 at 55 deg A A A A B C D E F G A A A A B C D E F G XXL XXL A A A A 2015 811 2013 RVR Energy Technology Ltd Audax 2 Zone Interface Board NLOC5374 Inoxstor 200 Audax 8 35 degree system A A A A B C D E F G A A A A B C D E F G XXL XXL A A A A 2015 811 2013 RVR Energy Technology Ltd Audax 2 Zone Interface Board KASC9591 Inoxstor 200...

Page 16: ...11 DECLARATION OF CONFORMITY ...

Page 17: ......

Page 18: ...Contact us RVR Energy Technology Limited Kenmare Co Kerry V93 F386 Ireland Sales direct line 353 0 64 6689522 Email sales rvr ie ...

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