FREQUENTLY ASKED QUESTIONS

Welcome to our FAQ page. Here you will find some useful questions relating to our products, ordering system and customer support.

DOMESTIC VENTILATION

Q: What is the extraction rate of a fan?

You will be able to find this information within the product manuals and our website. For more specific information about products please contact our technical team on 0844 372 7766 or alternatively e-mail us at technical.services@redringxpelair.com.

Q: The GX/WX fan has just been fitted, the power to the fan is on but the shutters are not opening.

This is because the newer fans are fitted with wax actuators which are slow opening so therefore, you will need to run the fan for up to 3 minutes before the shutters open. This replaced the previous shutter operator which was a solenoid that opened the shutters immediately.

Q: What type of fan do I require for my application?

This will depend on many factors on the application you are looking to use the fan for. For more information and guidance please contact our technical team on 0844 372 7766 or alternatively e-mail us at technical.services@redringxpelair.com.

Q: Part numbers/Spares where do I buy them from?

You will be able to buy spares direct from our website. If you are unable to find what you are looking for please contact our sales team on 0844 372 7750 or alternatively e-mail us onrxsalesoffice@redringxpelair.com.

Q: Name/ Number of the local service engineer in area?

Please contact our technical team on 0844 372 7766 or alternatively e-mail us at technical.services@redringxpelair.com for more information on your local service engineer.

Q: How do I book a service visit for my in guarantee product?

Please contact our technical team on 0844 372 7766 or alternatively e-mail us at service.request@redringxpelair.com.

Q: Why is my humidistat fan switching on randomly?

Humidistat fans detect a rise in moisture to protect the room from mould and condensation. At night time when temperature drops humidity rises causing the fan to switch on. This is not a fault as it is a functionality of the fan. Should you wish to find another product to replace the inconvenience please contact sales on 0844 372 7750 or alternatively e-mail us atrxsalesoffice@redringxpelair.com

Q: What product would replace my old fan or shower?

Please contact our sales team on 0844 372 7750 or alternatively e-mail us at rxsalesoffice@redringxpelair.com for guidance.

Q: What does a decibel of a fan mean?

A decibel is a measurement of noise. This denotes how noisy a fan would run.
Equivalent to noise level is 10 db(A) equals calm breathing
Equivalent to noise level is 20 db(A) equals a whisper
Equivalent to noise level is 35 db(A) equals a laptop running
Equivalent to noise level is 40 db(A) equals a refrigerator humming.

Q: Which accessories can I use with which fan?

Xpelair provide a full compliment of accessories for all of our range of products. This can be viewed on our website and are listed by product within our product catalogue, alternatively you can call our sales team on 0844 372 7750 who will be able to assist you.

Q: How do you wire in the fans?

The wiring diagrams for our range of products are available by either downloading the relevant product pdf file from our website. Or by viewing the wiring diagrams section of our catalogue.

Q: What are the dimensions of the fan products you supply?

Product dimensions for our range of products are available by either viewing the relevant product data sheet at our website. Or by viewing the required product within our catalogue.

Q: What spares are available for my fan?

Xpelair provide a full range of spares for our products. This can be viewed on our website or by calling our sales team on 0844 372 7750 who will be able to assist you.

Q: What happens when I pull the pull cord on a CF20 & CF40 fan?

When you operate the pull cord the fan goes into boost mode, which helps to clear the room quicker. When the appropriate level of humidity has been reached the fan will automatically revert back to its normal operation.

Q: What happens when I pull the pull cord on a CF20 & CF40 fan?

When you operate the pull cord the fan goes into boost mode, which helps to clear the room quicker. When the appropriate level of humidity has been reached the fan will automatically revert back to its normal operation.

WHOLE HOUSE SYSTEMS:

Q: How does heat recovery work?

Heat recovery is a ventilation system that removes moist warm air from such areas as bathrooms and kitchens, this warmth of the exhaust air is used to heat the fresh intake air from outside the property and supplied to the such areas as the bedrooms and living rooms. This achieved by the use of a cross over cell / heat exchanger.

Q: How do you duct a heat recovery system?

Heat recovery systems should be installed with rigid ducting and is normal hidden within the property. It is therefore essential that the ducting runs and integrity of ducting is understood before first fix installation.

PRE SHOWER INSTALATION

Q: Can a Redring shower be connected to a cold mains supply?

All instantaneous showers should be connect to the rising mains water supply, unless the unit is a power shower or mixer unit, as there are limitations on water services in order for the unit to perform correctly. Units can be connected to a header tank providing there is adequate head height to generate a minimum of 0.7 bar pressure.

Q: Can a Redring power shower be fitted to a combi-boiler?

There is no problem as long as the water services for the shower is taken before the combi-boiler, as most boilers are governed to 1 Bar pressure and if services are taken afterwards running pressure can drop to less than 0.7 Bar.

Q: Does the wiring to my existing electric shower need to be upgraded if I was to fit a higher kilowatt rated unit?

All wiring must be carried out by a fully qualified electrician and must comply with the current wiring regulations to meet the specification of the unit to be installed.

Q: What can I do if there is not enough mains water pressure to operate an electric shower?

If there is in-sufficient water pressure for your unit it would normally be down to a poor service from your service provider “lines could be blocked or restricted”, if this is not the case then your unit could be fed from a header tank with an adequate working head height.

Q: What is the minimum flow rate and water pressure required for a Redring electric shower?

The minimum running water pressure for the shower unit is 0.7 Bar

Q: What things do I need to think about when replacing an existing electric shower?

If replacing an existing unit you must ensure that your water and electrical services are adequate for the unit to be installed.

Q: Which of your showers are cold water tank fed?

Redring Expressions 570 is an electric shower with integral pump. This is specifically design for cold water tank fed installations.

Q: If I want to install a higher kilowatt shower will my cable and fuse be ok?

Your cable and fuse may need to be upgraded to accommodate a higher kilowatt shower. Consult a qualified electrician or phone our technical advice line on 0844 372 7766.

Q: What fuse rating and cable size do I need for my shower?

This would be dependent on several issues; the kilowatt rating of the shower, the cable run length and if cable runs through thermal insulation. You should install the shower in accordance with the current BS. 7671 (IEE Wiring Regulations) and Part P of the Building Regulations and/or local regulations. A this table can be found in the installation manual of your shower. If in doubt please call our technical advice line on 0844 372 7766.

Q: What side are the water and cable entries?

All Redring showers have water and cable entries on the right hand side of the product when viewed from the front. It should be noted that these are typically top, bottom and rear entry. The Advantage range has both left and right hand entries for water and cable in top, bottom and rear positions making it suitable for replacement of most other makes of shower. Please refer to the installation manual or website for further details.

Q: What effect does the kW rating have on my electric shower?

Electric showers only take water from your mains cold water supply and heat this water by passing it over electrically heated elements. The temperature of the water you get from your shower and the flow rate is therefore determined by three key factors: 1. the temperature of your mains cold water supply (this can vary from 5OC in winter to 20OC in summer) 2. the heating ability of your element in kW 3. the pressure of your mains water supply In simple terms, the higher your chosen showers kW rating the better the potential water flow rate from your shower at your preferred showering temperature. As a guide you can see below how the kW rating affects your shower flow*: * 8.5kW up to 27% more flow than a 7.5kW heater * 9.5kW up to 42% more flow than a 7.5kW heater.

Q: Do I need a pump?

You can only pump water from a storage tank to feed to a shower; you can not pump mains water directly to a shower as it goes against local water by-laws.

Q: What Redring shower will suit a mains fed water system?

Any unit except a power shower or mixer unit as these need to be gravity fed

Q: What Redring shower will suit a combi water system?

There is no problem with any mains shower unit being fed from a combi system as long as the water services for the shower is taken before the combi-boiler as most boilers are governed to 1 Bar pressure and if services are taken afterwards running pressure can drop to less than 0.7 Bar

Q: What Redring shower will suit a gravity system?

A power shower or mixer unit are the only recommended units as there are limitations on water services in order for any shower unit to perform correctly, standard mains shower units can only be connected to a header tank providing there is a adequate head height to generate a minimum of 0.7 bar pressure.

Q: What size fuse does a Redring electric shower require?

The installation must comply with the current wiring regulations to meet the specification of the unit to be installed. This all depends on the kW rating of the shower unit. Please see below: 7.2kW shower = 32 Amp fuse 7.5kW shower = 40 Amp fuse 8.5kW shower = 40 Amp fuse 9.5kW shower = 40/45 Amp fuse 10.5kW shower = 45 Amp fuse Please note in order to comply with the current building regulations you should have a competent certified installer carry out any electrical work to the IEE Wiring Regulations..

Q: Can I fit a pump to help boost my mains pressure?

Redring would not recommend fitting a pump to the mains water supply. You should seek advice from your local water authority.

Q: What are the dimensions of the showers?

These vary from one model to another. Please refer to our website for product specific information or contact out technical advice line on 0844 372 7766

Q: Must my electric shower be wired to a dedicated electricity supply?

Wiring an electric shower to a supply that has another appliance contacted to it violates the IEE wiring regulations. This is an unsafe practice as the electrical circuit will be overloaded. This type of installation should be carried out by a qualified engineer. Please call our technical advice line on 0844 372 7766

Q: Should I have an isolation switch for my shower?

In accordance with BS7671, the IEE wiring regulations and part P of the building regulations a means of electrical isolation (Disconnection of all electrical poles) is required. This is normally done through the use of a ceiling mounted double pole isolation switch, mounted either inside or outside of the bathroom but must not reachable whilst using the shower. If an isolation switch needs to be installed this must carried out by a qualified engineer. Please our technical advice line on 0844 372 7766

Q: What is the minimum water pressure I require for an electric shower?

The minimum water pressure required for a Redring shower is 0.7bar of dynamic water pressure.

Q: What is the difference between dynamic and static water pressure?

Static water pressure is the pressure of water with the water circuits closed (Tap closed). Dynamic water pressure is the pressure of flowing water (Tap open). Typically static water pressure is greater than dynamic water pressure.

Q: How does an electric shower work?

An electric shower is a shower that uses mains cold water only, this water is then heated by an electric element and distributed through a hose and shower head arrangement. The temperature of the water is controlled by either adjusting the element power or by adjusting the flow of the water. The benefits of this type of shower are that the shower can be used instantly as required. You do not use valuable heated stored water and is ideal for families and households were the amount of stored hot water is limited.

Q: The water pressure of the water supply is poor. What shower would you recommend?

We would recommend the installation of a Redring Expressions 570 pumped electrical shower. For further information either visit our website or call our sales team on 0844 372 7750.

Q: Can you install an electric shower in a shower cubical?

All Redring electric showers are approved for installation within a shower cubical.

DURING SHOWER INSTALLATION

Q: What type of plumbing fitting is required to connect to the inlet of a Redring electric shower?

An easy fit or compression fitting is required to connect to the unit, providing they meet the specification of the installation.

Q: When installing a Redring electric shower, what size electric cable is required?

The installation must comply with the current wiring regulations to meet the specification of the unit to be installed. Recommended cable size: 7.2kW shower = 6 mm2 cable size 7.5kW shower = 10 mm2 cable size 8.5kW shower = 10 mm2 cable size 9.5kW shower = 10 mm2 cable size 10.5kW shower = 16mm2 cable size However please note in order to comply with the current building regulations you should have a competent certified installer carry out any electrical work to the IEE Wiring Regulations.

Q: What happens when an incorrect fuse size is fitted for an electric shower?

If the fuse is under rated then the fuse will keep blowing. If the fuse is over sized then if there is an electrical problem then the unit could burn out and this could be a potential fire hazard.

Q: What water and cable entries do Redring showers have?

Most units unless other wise stated have the water entry on the bottom right hand side of the unit that can be connected to a water supply coming from bottom, rear or top of the unit, the electrical connection block is located on the right hand side, mid way and has a knockout section for cable entry.

AFTER SHOWER INSTALLATION

Q: My Redring shower is out of guarantee and has a fault, what can be done?

If in the unlikely event of a faulty unit that is out of manufactures warranty then please contact technical services on 0844 372 7766 who will be able to help you with a repair or replacement of your product.

Q: My Redring shower is in guarantee and has a fault what is the procedure?

If in the unlikely event of a faulty unit that is within our manufactures warranty then please contact technical services on 0844 372 7766 stating model number, serial number and your details. These details will then be passed to one of our recognised engineers within your area who can provide a service to repair the unit, in line with our terms and conditions.

Q: Water is leaking from the bottom of my unit, what could be the problem?

If water is leaking from the base of the unit it could be due to the shower being over pressurised (a build up of lime scale or a bent/restricted shower hose) “water will be coming from a small black pipe behind the shower hose”

Q: Where can I find the serial number on my Redring shower?

All serial numbers are located on the bottom left of the unit next to the water out-let hose

Q: The flow of water from my Redring shower seems very poor, what could be the problem?

If you experience poor flow from your unit this could be due to poor water services or that the unit is being used on half heat setting and trying to achieve a hot shower “increasing the heat setting should increase the water flow rate”.

Q: Do I need to register my shower?

We would always recommend you register your shower as you will benefit from a free one year warranty extension and any service calls required by you will be dealt with more efficiently.

Q: What does the overheat light on the unit mean?

When the light is on it means the water in the unit has got too hot and that the safety device called a Thermal Cut Out has been activated. Water will continue flow from the shower and become cool. Once the temperature has cooled sufficiently the Thermal Cut Out will reset and allow power to the heating elements again. This will heat the water up again. Note, if you do not reduce the temperature setting this will continue to cycle between hot and cold. If the water remains cold permanently and does not cycle, your unit has activated the main one shot Thermal Cut Out device, which will need to be replaced by a qualified engineer. Please call our technical advice line on 0844 372 7766

Q: Water from the shower is either too hot or too cold, what should I do?

The temperature of the water from the shower is dependent on the water flow rate. If the temperature is too hot, increase the flow rate of the water with the temperature control knob. If the temperature of the water is too cold, reduce the flow rate of the water with the temperature control knob.

Q: Should I isolate my shower with the pull cord switch after every shower?

We would always recommend that you isolate your shower with the pull cord switch after use as general good practice.

Q: I have broken a part on my shower, where can I buy a replacement part?

Please contact our spares department on 0844 372 7750 or visit our spares section of the website.

Q: Water is coming out of the pipe at the bottom of my shower, and the shower will not work?

This mean the pressure relief valve has activated. You will need to have the shower, hose and handset checked for blockages before the pressure relief valve is replaced. This will need to be checked and replaced by a qualified engineer. Please call our technical advice line on 0844 372 7766

Q: Is the TCO (Thermal Cut Out) a thermostat?

The thermal cut out is a safety device which protects the shower from overheat conditions, and does not control the temperature of the out coming water.

Q: The shower does not stop instantly when turned off:

This is due to some models of shower having a phased shutdown facility incorporated in them. This allows the hot water to be flushed out with cold water for a period of 7 seconds., and prevents a surge of hot water being emitted if the shower is switched on again soon after use.

REDRING SELECTRONIC SHOWERS

Q: What Selectronic showers are available?

The Selectronic shower is available in four product ranges. The Selectronic Premier and Shower Safe ranges which are ideal for family showering and the Selectronic and Selectronic Plus ranges which are ideal for the care market. All of these ranges are available in 3 different kilowatt ratings being 8.5kW, 9.5kW and 10.8kW. For further advice please visit our website at http://www.redring.co.uk/showers.html or alternatively call our sales team on 0844 372 7750.

Q: My Selectronic shower is thermostatic what does this mean?

This means that the shower will maintain the required temperature irrespective of the changing inputs such as water temperature, water pressure and the fluctuation in electrical voltages.

Q: How do I cool my shower?

To cool the shower you need to press the cooler button once you will notice the display digit drops by one number each time the button is pressed. It should be noted that this function operates with the shower in both modes Normal and Temperature Lock.

Q: My shower is in temp lock what does this mean?

The Selectronic shower has two modes of operation Normal and Temperature Lock. When the shower is in the temperature lock mode the shower will not exceed the preset maximum temperature. This is of particular benefit when the shower is to be used by the less-able, elderly and children.

Q: How do I take my shower out of temp lock?

The shower can temporarily be taken out of temp lock whilst the shower is running. This is carried out by pressing the warmer and cooler buttons at the same time for more than 3 seconds, you will notice the temp lock light go out, the shower is now in normal operating mode. The shower will revert back to temp lock mode next time the shower is used.

Q: How do I alter the water flow of my shower?

To change the flow of your shower press the flow button, the shower will beep and the flow will change the temperature of your shower will not be effected by changing the flow. It should be noted that this feature is not available on the Selectronic Premier as this is a fully automatic shower.

Q: The water does not stop when I turn the shower off?

This is due to the Selectronic shower having a phased shutdown facility incorporated in it’s logic. This allows the hot water to be flushed out with cooler water until 35°C is reached. You will notice when your shower is in the mode the display scrolls round and round until this cycle is complete, then stops automatically.

Q: How do I commission the Selectronic shower?

To commission your shower firstly you must ensure that the services to the shower are switched on and that the shower is in normal mode and not temperature lock mode using the switch located on the main logic PCB. After checking this press the start / stop button, then press the cooler button 5 times until the display shows number 1. Allow the unit to fill with water and wait for water to come out of the handset. Increase the temperature by pressing the warmer button and wait for the water temperature to increase, when this has been achieved press the start / stop button again and the shower will stop. Reset the switch on the main PCB. This is the commissioning process complete. This procedure must be carried out on installation by the installing engineer. For further advice please call our technical advice line on 0844 372 7766.

Q: Shower makes a whirring noise when I turn it on?

This is normal and is not a fault. The noise is omitted from a small motor within the shower which alters the flow, this operates each time the shower is used.

Q: How do I increase the temperature of my shower?

To increase the temperature of the shower you need to press the warmer button once, you will notice the display digit increases by one number each time the button is pressed. It should be noted that this function does not only work with the shower in Temperature Lock mode.

Q: My shower display shows "OT"

If your shower shows OT in the display, this indicates that the shower has detected an abnormal condition and has shutdown straight away stopping the flow of water. OT will remain in the display until the shower has cooled and reset at which point it will switch off automatically. This process can speed up by purging the shower of hot water..

Q: Level Access Pump Shower where can I fit the pump?

The level access pump must be installed inline with BS7671 IP zone rating for bathrooms and as per the specific instructions of the pump. This installation must be carried out by a qualified engineer. Please call our technical advice line on 0844 372 7766

Q: What kilowatt rating sizes are available?

The Selectronic shower range is available in 3 Kilowatt sizes 8.5kW, 9.5kW and 10.8kW and available in 4 model ranges

Q: How do I purge the Selectronic shower?

You can purge your shower of hot water whilst the shower is displaying “OT” This is achieved by pressing the cooler button and the flow button at the same time for approximately 20 seconds. NOTE: The initial water purged may be very hot so please take care.

REDRING MIXER SHOWERS

Q: What is a mixer shower?

A mixer shower is a shower that is connected to both the hot water supply and cold water supply. The shower then mixes these water supplies to the required temperature, this is normally controlled by the customer adjusting a control valve.

Q: Can I pump the mains water to my shower?

You cannot pump mains water as per the 1999 water supply regulations, this prohibits boost pumps to be connected directly to cold water supply of your shower.

Q: Can I use my mixer shower with a fully modulating boiler?

Yes, provided the boilers activation flow rate is 2 l/m or less and the mixer is specified as suitable for pressurised (non pumped) systems.

Q: Can I use my mixer shower with a step modulating boiler?

Yes, provided the boilers activation flow rate is 2 l/m or less and the mixer is specified as suitable for pressurised (non pumped) systems. The temperature stability may be poor whenever the mixer valve is adjusted.

Q: I keep getting a drip from the head of my shower?

The shower head and delivery hose can retain a large volume of water. This can be expelled as dripping after the shower has been switched off. (This can occur for some time after the shower session has ended)

Q: Can I use a cylinder flange when installing a mixer shower?

A cylinder flange can be used to supply the hot water feed to the mixer. Usually a tee into the inclined section of pipe from the top of the cylinder is sufficient, provided the tee is pointing down. (This ensures any air released from the hot water bypasses the tee and vents through the expansion pipe).

REDRING WATER HEATING

Q: Do I need the optional cold water pack when fitting an EW/MW 10/15?

The cold water pack is required if the first cold water outlet is within 3 meters of a 10 litre product and within 4.5 metres of a 15 litre product. Or if you’re static water pressure is greater than 6.0bar

Q: What is the difference between a vented and unvented water system?

Vented system has a cold water header tank directly feeding the hot water cylinder, this system is vented through an open pipe within the system. An unvented system has the hot water cylinder fed directly from the rising cold main. This system has a series of pressure valve and is not vented through a vent pipe.

Q: What type of taps can I use on a vented / unvented unit?

On most vented and unvented systems standard taps can be used. It should be noted that the Redring WS7 and Contour 7000 vented units need special open vented hot water taps.

Q: How many outlets will the Powerstream operate?

You can supply hot water to either two hand basins or one hand basin and a shower mixer valve. It should be noted that you can only operate one outlet at a time.

Q: Can the Powerstream supply hot water to a kitchen sink?

This is not recommended as the open flow of a sink tap is greater than the products capability to supply hot water at a suitable temperature.

Q: How often should I de-scale my SB2 water boiler?

You should de-scale your SB2 in accordance with the instruction manual and the hardness of water in your local area.

Q: Who can work on a Dualheat boiler?

As the Dualheat product is vented and unvented which stores over 15 litres of stored water then any person working on a Dualheat must be CITB approved.

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Q: I had installed 2 months ago an EW / MW product, water is pouring from the tundish down the drain.

This is happening due to the lack of pressure within the expansion vessel. The expansion vessel will need to be recharged, this must be done a qualified engineer.

Q: I have a small flat, can you recommend a suitable boiler that will supply my me with radiated heat and domestic hot water?

There are two types of products that we would recommend, the Redring Ascari flow boiler and the Redring Powerstream Professional. These are both capable of meeting your needs, however you should note that you will also need a Redring LWSS water cylinder to store your domestic hot water. Please contact our technical advice line on 0844 372 7766.

Q: What replaces the Dualheat boiler?

Dualheat boiler can be replaced by the use of an Ascari boiler, used in conjunction with an LWSS cylinder.

Q: Are spares are available for the water heater I have?

A full suite of spares is available for most water heating products these can obtained by either visiting our website at http://www.redring.co.uk/spares.html or by telephoning 0844 372 7750.

Q: My WS7 water heater sometimes drips from the spout when heating, is this normal?

This is normal and not a fault with the product , as this is due to the way the product vents when heating the stored water.

Q: How often will I need to change the anode in an EW/MW water heater?

It is recommended that you inspect the sacrificial anode yearly and replace as required. Replacement anodes are available from our spares department by calling 0844 372 7750.

Q: Can the EW/MW under sink range be fitted over sink?

There are over sink versions of MW product, which is the MWH model. For further advice please call the sales team on 0844 372 7750.

Q: Can an Ascari boiler supply both central heating and domestic hot water?

The Ascari boiler is capable supplying both domestic hot water through a cylinder and central heating at the same time providing no more than 2 circuits of demand are installed. Please contact our technical services team for advice on 0844 372 7766.

Q: Can I use a thermostatic blending valve with the Powerstream?

The use of thermostatic blending valves it is not recommended for use with a Powerstream product, as this type of valve tries to control an already defined water temperature.

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