gledhill Torrent Stainless OV, Instruction Manual

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Section Page
DESIGN
Description 3
Technical Information 4
System Design 6
INSTALLATION
Installation
8
Wiring Diagrams 21
Commissioning 28
Installation Review 30
SERVICING AND MAINTENANCE
Servicing and Maintenance 31
Fault Finding 32
Short Parts List 39
APPENDIX
Appendix A 40
Appendix B 41
Notes 42
Terms & Conditions 44
BENCHMARK
Commissioning Check List 46
Service Record 47
ISSUE 4: APRIL 2018
These instructions should be read in conjunction with the installation/servicing
instructions issued by the manufacturer of the heat source being used.
Any installation must be in accordance with the relevant requirements of the Gas
Safety Regulations, Building Regulations, I.E.E. Wiring Regulations and the Water
Fitting Regulations (England and Wales) or Water Byelaws (Scotland). It should be
read in accordance with the relevant recommendations of the following:
BS 6798; BS 5549; BS 5546;
BS 5440:1; BS 5440:2; CP 331:3
BS 6700: BS 5258 and BS 7593: 1993 and BS7671
It must be installed by a competent person as defined by the relevant regulations.
Manufacturers notes must NOT be taken as over-riding statutory obligations.
This product overcomes Part G Building Regulation discharge requirements for
unvented cylinders but the installation is notifiable to building control unless it is
carried out under an approved competent person self-certification scheme.
Although the secondary supply (domestic) is at mains pressure, it is not necessary to
fit an expansion chamber, pressure or temperature relief valve, the plumbing should
allow any unusual build up of pressure to be relieved at the ball valve.
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 at all times to
ensure they do not play with the appliance.
This information is provided to assist generally in the selection of equipment.
Responsibility for selection and specification of our equipment must however remain
that of our customer and any experts or consultants concerned with the installation(s).
PLEASE NOTE: THAT WE DO NOT THEREFORE ACCEPT ANY RESPONSIBILITY FOR
MATTERS OF DESIGN SELECTION OR SPECIFICATION, FOR THE EFFECTIVENESS
OF AN INSTALLATION OR SYSTEM CONTAINING ONE OF OUR PRODUCTS UNLESS
SPECIFICALLY REQUESTED TO DO SO IN WRITING.
All goods are sold subject to our Conditions of Sale which are set out at the rear of this
specification. In the interest of continuously improving the Torrent Stainless range,
Gledhill Building Products Limited reserve the right to modify the product without notice,
and in these circumstances this booklet, which is accurate at the time of printing, should
be disregarded. An updated set of Instructions will be produced and supplied with new
appliances and will be made available for other appliances on request.
Benchmark places responsibilities on both manufacturers and installers. The
purpose is to ensure that customers are provided with the correct equipment for
their needs, that it is installed, commissioned and serviced in accordance with the
manufacturers instructions by competent persons and that it meets the requirements
of the appropriate Building Regulations. The Benchmark Checklist can be used to
demonstrate compliance with Building Regulations and should be provided to the
customer for future reference.
Installers are required to carry out installation, commissioning and servicing work
in accordance with the Benchmark Code of Practice which is available from the
Heating and Hot Water Industry Council who manage and promote the Scheme. Visit
www.centralheating.co.uk for more information.
For information on the HWA Charter Statement, go to the HWA website hotwater.org.uk.
Manufacturer: Gledhill Building Products Ltd
Max. mains inlet water pressure 5.0bar
Max. working pressure - Primary heat exchanger (Indirect models) 3.0bar
Max. working pressure - Solar heat exchanger (Solar models) 6.0bar
Max. working pressure - Open vented thermal store (All models) 10.0m (1.0bar)
Max. working pressure - Open vented central heating system 10.0m (1.0bar)
Max. working pressure - Sealed heating system 3.0bar
Max. flow rate - Measured by flow sensor 32 l/min
Min. flow rate - Measured by flow sensor 1.8 l/min
Immersion heater rating 3kW @ 230V ac, 50Hz
The Torrent Stainless comes complete with plate heat exchanger. This has a very
small volume of water held within it, therefore any minimal expansion will be
accomodated in the supply pipe.
Handling Before Installation
The Torrent Stainless must be handled with care and stored the correct way up in
a dry place. Any manual handling/lifting operations will need to comply with the
requirements of the Manual Handling Operations Regulations issued by the H.S.E. The
appliance can be moved using a sack truck on the rear face although care should be
taken and the route should be even. In apartment buildings containing a number of
storeys we would recommend that the appliances are moved vertically in a mechanical
lift. If it is proposed to use a crane, expert advice should be obtained regarding the
need for slings, lifting beams etc. A specific manual handling assessment is shown in
Appendix B at the rear of this manual.
Maintenance
Modifications should not be made to this product. Replacement parts, including
immersion heaters, should be purchased from Gledhill Building Products Limited, or
agents approved by them. The manual must always be left with the Torrent Stainless.
The Environment
This product has been manufactured using many recyclable materials, including the
approved HCFC/CFC free polyurethane foam insulation. At the end of its useful life, it
should be disposed of at a Local Authority Recycling Centre, to maximise the products
full environmental benefits.
Note:
The thermal store is supplied with either one or two immersion heaters. These
incorporate a thermostat (XB081) which cuts the electricity supply to the immersion
heater if the control thermostat fails - a thermal cut out. Under no circumstances fit
an immersion heater which does not incorporate a thermal cut out.
Why use a thermal store?
a) Alternative energy fuel sources are typically low grade, inherently unpredictable
and are often available in plentiful supply but not when the heat energy is
needed! A thermal store provides the means to harness the energy when it is
available for later conversion into both hot water AND heating.
Being open vented, they provide a simple and inherently safe way to produce
high-performance mains pressure hot water.
Multiple heat sources feed into the thermal store. This means that the energy
available from solar panels or a wood burning stove, for example, can be used
to provide energy into the heating circuit to decrease the use of fossil fuel based
boilers, and hence reduce household running costs.
DESIGN
DESCRIPTION
It is very problematic and inherently unsafe
to connect wood burning stoves or other
uncontrolled heat sources to an unvented
cylinder, and not easily possible to combine
alternative energy heat sources to provide
energy to the heating circuit, hence the
unique advantages of a thermal store.
b) The Torrent Stainless is the ideal product
to use as the heart of an alternative energy
system as it will take energy input not only
from a conventional boiler but also from a
wide variety of alternative energy sources,
including but not limited to:
• solar panels
• wood burning stoves and other
uncontrolled heat sources
• electricity from renewable or low
carbon sources
If the system is configured appropriately
the heat from the alternative energy source
will be available for both hot water AND
heating.
c) The Torrent Stainless becomes the neutral
point in any open vented system because
the open vent and cold feed pipes are
connected to it. The benefit of this is that
another device to enable different systems
to be joined together at a neutral point is
not required, which would be required in
other systems. In multiple fuel systems, the
Torrent Stainless acts as a low loss header.
d) Alternative energy supplies cannot be relied
upon to raise the temperature of the stored
water above 60 degrees every time they
operate. This is not a problem with a thermal
store because the store water is not the
water that comes out of the tap. The water
that comes out the hot tap is mains cold
water run through a plate heat exchanger
on the outside of the thermal store. This
water heats very quickly and the volume of
stagnent water in the heat exchanger is very
small so there is virtually no legionella risk.
e) The thermal store is open vented and
therefore does not require additional safety
devices such as temperature and pressure
relief valves or an inlet control group and
expansion vessels.
f) The running costs of this cylinder are greatly
reduced by not being required to have
an annual safety inspection where as an
unvented cylinder does.