Pre Shower Installation

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

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

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

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

A: 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: What Redring shower will suit a gravity system?

A: 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 Redring shower will suit a combi water system?

A: 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 mains fed water system?

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

Q: Do I need a pump?

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

A: 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 5°C in winter to 20°C 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: What side are the water and cable entries?

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

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

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

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

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

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: If in the unlikely event of a faulty unit that is out of manufactures warranty then please identify a local qualified tradesperson to provide you with a repair service. Spare parts can be purchased from our sales team on 0844 372 7750.

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

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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?

A: 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:

A: 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 Water Heating

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

A: 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?

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

A: A full suite of spares is available for most water heating products these can obtained by calling our sales team 0844 372 7750*.

Q: What replaces the Dualheat boiler?

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

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

A: 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*.

*Calls cost 7p per minute plus your telephone company's network access charge