gledhill PulsaCoil ECO Stainless User manual

PulsaCoil ECO Stainless
User Instructions

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Important - Please Note
This unit has been manufactured by Gledhill Building Products Limited. Gledhill
are an established manufacturer of water heating cylinders. It is our policy to deal
with the merchant trade rather than directly with consumers because our products
should only be installed by suitably competent trades people and we recommend
that consumers do not attempt to purchase and install our products.
We offer a minimum one year warranty (guarantee) in respect of all cylinders that we
manufacture, but please note that our guarantee is given to the builder or installer that
purchased the cylinder from us and runs from the date of manufacture. In the unlikely
event that there is a problem, it is important that you refer it as soon as possible to
the person or company that supplied the cylinder to you (your “Supplier”). This will
usually be the person or company that sold (or leased) the property to you or the
person or company that installed the cylinder for you.
If you contact your Supplier in the first instance this will enable them to determine
the cause of any problem that you may be experiencing. We would not, for example,
be responsible for faulty installation and by contacting us directly this may simply
cause you unnecessary delay and expense.
Your Supplier can determine the cause of the problem and where the problem is
caused by a fault with the cylinder itself then your Supplier can advise us accordingly.
Nothing in our guarantee or in these User Instructions will affect your statutory rights.
Warning
There are no user adjustable parts inside the casing. Tampering with sealed
components will invalidate the warranty and could also damage the cylinder
and make it unsafe to use.

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PulsaCoil ECO Stainless
PulsaCoil ECO Stainless - the power behind your domestic hot water
The hot water in your home is provided by a high specification thermal storage
system which will give you many benefits. This booklet will explain why and how you
can get the most from it.
Operating characteristics
With a PulsaCoil ECO Stainless, the domestic hot water you use at the tap is not
stored but is produced instantaneously. This has the advantage of reducing the risk
of contamination from things like Legionella as well as reducing the risks of scalding
by allowing the temperature of the hot water at the tap to be controlled to 50°C-55°C.
This system delivers fresh water from the mains supply to the hot taps and is designed
to fulfil four basic needs.
1. Provide mains pressure hot water with a cylinder that does not need a
costly annual service.
2. Deliver hot water at mains pressure.
3. Operate as efficiently as possible to cost-effectively meet your needs.
4. Provide high quality water to every tap. This is possible because the water
is heated instantaneously and is not stored where it can be contaminated.

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Depending on the wiring system within your property your installer/developer may
have provided an off-peak timer in the airing cupboard of your property.
If a device is fitted it must be set to the correct time and set to synchronise with the
off peak meter for correct economical operation. This should have been set when the
system was commissioned but any power cuts could have altered the correct time.
THIS UNIT SHOULD BE LEFT PERMANENTLY CONNECTED TO THE
OFF-PEAK ELECTRICAL SUPPLY AND NOT SWITCHED ON AND OFF
WHEN HOT WATER IS NEEDED.
INSTALLERS MAY ALSO HAVE FITTED AN ON-PEAK SWITCH WHICH
CAN BE USED WHEN REQUIRED TO PROVIDE A BOOST TO THE TOP
PART OF THE STORE ON DAYS WHEN A LARGE AMOUNT OF HOT
WATER IS REQUIRED.
Scale
The water in the store never changes and therefore the immersion heater elements
will never scale up during the life of the product.
As far as the water you use is concerned scale can be a problem in any of your
domestic products if the water is very hard in your area.
The PulsaCoil ECO Stainless appliance has been designed to inhibit the formation
of scale, but if it does become a problem you will notice a deterioration in the flow
rate at your hot taps. In this situation your service engineer can de-scale the product.
Building Regulations now require some form of scale inhibitor to be fitted in hard
water areas, and so scale is unlikely to be a problem if the scale inhibitor is operating
correctly.

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PulsaCoil ECO Stainless
What is a thermal store?
The Gledhill Thermal Store is the heart and brain of your hot water system. It stores
hot water at a constant temperature and incorporates a highly efficient heat exchanger
which heats the hot water for all your domestic needs. The Thermal Store is superbly
insulated and so the hot water stored has a very low heat loss.
Off-peak supplies will automatically be used to heat the thermal store. The unit can
also be connected to the on-peak electricity supply, to switch the unit on at any time
of the day, to provide a ‘boost’ to the top part of the thermal store to achieve the
most efficient way of satisfying your demands on the system.
How does the system deliver hot water at high pressure?
The water delivered to the taps and showers in your home is supplied at high pressure
because it uses the mains pressure of your cold water supply. The PulsaCoil ECO
Stainless is connected to the mains system and the water passes through a highly
efficient heat exchanger to raise its temperature before it travels to your taps and
showers. Because it is so efficient, both high flow rates and high pressures are
available to give the best performance for both baths and showers.
Off-peak
immersion
heater
On-peak
immersion
heater
Supplied
by Gledhill
Supplied
by Installer
Cold mains
water in
Mains pressure
hot water out
Off-peak
controller
Isolator
switch

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Plastic top up cistern
The plastic feed tank should have been filled to the correct level by the installer at
the time of commissioning.
The water level in the plastic feed tank should be checked on a regular basis, generally
3-4 times a year, and topped up when necessary to the level shown on the sight
glass which is fitted to the side of the tank.
Once the level has been topped up or after it has been checked, ensure the lid has
been securely replaced.
Maximum Level
Minimum Level

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PulsaCoil ECO Stainless
Annual Service / Safety Check
Unlike other hot water appliances which provide mains pressure hot water, such
as unvented storage cylinders, there is no legally required costly annual service or
safety check.
However, Gledhill Response can offer an annual Breakdown Agreement once the
warranty has expired.
What if the system develops a fault?
If your PulsaCoil ECO Stainless should develop a fault during the warranty period,
switch the appliance off and contact your house manager/installer. Do not attempt
to remove or adjust any component part yourself.
If the developer’s warranty has expired, you can contact Gledhill Response, who will
be able to carry out a chargeable repair or offer a Breakdown Agreement.
The PulsaCoil ECO Stainless may have been connected to a manual switch facility.
This should be switched on to provide a boost to the top part of the thermal store
on days when a large amount of hot water is required.
REMINDER
If you are considering changing your electricity supplier it is important that
you ensure they are able to provide at least the same tariff. If not the operation
and cost of running the appliance will be affected.

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How often do I need to check my header tank?
We advise that the header tank water level is checked every three months. If you do
need to top up the water level, you can help reduce the amount of water lost during
operation by ensuring the lid of the header tank is securely replaced.
How much water should I add to my header tank?
The header tank should be filled with clean cold water to the level shown on the
sight glass which is fitted to the side of the tank. It is important not to overfill the tank
as this can create problems.
Why do I have to manually top up my header tank?
While we acknowledge that the manual fill of the header tank can be inconvenient
for some homeowners, this feature has important safety implications since it
significantly reduces the potential for damage to the property.
You can install a ball cock with automatic topping up of the system. However, in the
event of a leak or ball valve failure, systems which automatically fill themselves up
will continue to do so indefinitely until the problem is resolved. Such issues have
been responsible for causing damage to property and the implications of leaks
within flatted developments can potentially be quite serious.
By contrast, the inability of the PulsaCoil ECO Stainless unit to top itself up means
that in the event of a leak, the only water that can be lost is the water held in the
cylinder at that time.
Can I turn the unit off overnight?
While you can safely turn the appliance off at any time, the PulsaCoil ECO Stainless
unit charges overnight to take advantage of the ‘off peak’ cheap rate electricity.
Turning the unit off overnight denies the appliance this opportunity to charge itself.
This means that you will have limited hot water and will potentially have to charge
the unit during the day using ‘on peak’ electricity at a much greater cost.

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PulsaCoil ECO Stainless
Will I save money by turning the unit off overnight?
No, turning off your unit overnight will not save money since the temperature of the
water held in the store will fall and a similar or greater amount of electricity will be
used when the unit is turned back on to restore the water temperature.
Will I save money by turning the unit off during the day?
No, turning the appliance off during the daytime will not save electricity. Since the
unit only charges overnight, unless you are on an Economy 10 tariff or actually
request a top up of hot water (by pressing your ‘Boost’ button on the wall) you will
not use a significant amount of electricity during the day.
Should I turn my unit off when the property is empty?
We advise that if you are away from the property for less than 2-3 weeks, then leave
all power switches on.
Inside your appliance a store of water is held within a stainless steel cylinder,
which will cool if the appliance is switched off. If the water held in the stainless
steel cylinder is allowed to remain cool for a prolonged period of time, corrosion
of the stainless steel cylinder can occur and the lifetime of your appliance can be
significantly reduced.
We would not therefore recommend leaving your unit switched off for several months
without the appliance being drained. Gledhill Response would be pleased to drain
your unit for you at a subsidised rate should this ever be necessary. However, the
PulsaCoil ECO Stainless is very well insulated and so the cost of draining and
refilling the cylinder will almost certainly be more than the cost of energy used by
leaving the cylinder switched on.
Why do I get cold water when I first turn on the hot tap?
When you initially turn on the hot tap, you draw the water that has been stood in
the pipework between the PulsaCoil ECO Stainless and the tap itself. It is not until
this water is drawn off that you then receive the hot water that is generated by
the PulsaCoil ECO Stainless. This would be experienced with ANY boiler and is

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I have concerns over the water quality.
The hot water which is delivered through your taps is your mains cold water which
has been instantaneously heated by our appliance. This means that the hot water
produced is therefore the same quality as your incoming mains supply and should
therefore be of drinking quality.
You have no exposure to stored water and there is nothing our unit can do to
influence the quality of your water. The PulsaCoil ECO Stainless eliminates the risk
of legionella or dangerous bacterial growth affecting your hot water supply.
Why is my water so hot?
Your PulsaCoil ECO Stainless appliance is designed to meet with Building and
Water Authority Regulations, which stipulates that hot water is routinely delivered to
tap outlets at no less than 50°C – 55°C.
These temperatures prevent the growth of micro-organisms within your pipe work
and eliminates the risk of legionella and harmful bacteria within your hot water. You
can therefore have absolute confidence that the hot water that you use to bath and
wash with is completely safe.
Can I turn the hot water temperature down?
However, while this high temperature guarantees safe water quality, we do understand
that this temperature is very hot. Older people who have more sensitive skin, may
have restricted movement and be unable to react quickly. They are consequently
more vulnerable to scalding, especially if ‘stuck’ in a bath or shower.
The temperature of the hot water cannot be ‘turned down’ at our appliance due to
the risk of bacterial build up within your pipework, but it can be reduced at the outlet
itself through the installation of a thermostatic control.
My unit makes noise, is this normal?
Noise will generally only occur when the unit heats during the night or when requested
by you during the day. The unit contains a stainless steel cylinder holding 100 – 200
litres of water, which will make some noise when heated, in the same manner a
kettle will obviously make considerable noise heating a far lower quantity of water.