4
TopGas Cascade
60 - 720 kW
4215256-00 - 11/16
1. Important Information
1.1. Documentation
Hoval gas boilers are only to be installed and placed in operation
by suitably qualified technicians; these instructions are therefore
intended to give a brief description of the Hoval TopGas Cascade
for the specialist covering the installation, commissioning, and
subsequent maintenance of these units. Other documents apply
in addition to these instructions. We accept no liability for any
damage caused by failure to observe these instructions.
The installation of boilers and their ancillary equipment is
normally carried out by the Heating Engineer, and for the purpose
of this manual he / she is regarded as the installer, and, as such,
it is his / her responsibility to ensure that he / she has read and
understood the contents of this manual before installing the
boiler.
1.2. Guarantee
Important Note: Proper functionality is only guaranteed if the
installation and operating instructions are observed and the boiler
is regularly maintained. The installation should be in accordance
with current I.E.E. Regulations, relevant British & European
Standards and Codes of Practice, Building Regulations and Local
Authority Bylaws.
Troubleshooting and damage repair caused by contaminated
operating media (gas, water, combustion air), unsuitable
chemical additives to the heating water, incorrect handling, faulty
installation, inadmissible modifications and damage due to the
exercising of force are not covered by our warranty; the same
applies to corrosion through halogen compounds, e.g. from spray
cans, paints, adhesives, solvents and cleaning agents. Hoval
gas boilers are only to be installed by competent and qualified
persons. No modifications are to be made to the boilers.
1.3. Other instructions
Depending on the model, any further instructions are enclosed
with the individually packed components. For any adjustments
and additional accessories please refer to the relevant Technical
Information Installation Instructions for the individual Hoval
TopGas boilers and any relevant installation Standards and
Regulations.
1.4. Safety instructions
Installation and maintenance of the boiler must only be
performed by a competent person with valid accreditation from
the Health and Safety Executive in accordance with the “Gas
Safety (Installation and Use) Regulations 1998”. The existing
regulations, rules and guidelines must be observed when doing
so. The competent person is also responsible for inspection,
maintenance and repairs to the boiler, and alterations to the gas
volume setting.
There is a risk of injury or death to the user or others, or of
damage to the product and other property, in the event of
improper use or use for which it is not intended. The product is
intended as a heat generator for closed hot water/central heating
installations and for hot water generation.
The system may only be placed in operation when all relevant
standards and safety regulations have been complied with. The
following conditions must be satisfied:
•
Safety valve installed (closed system)
•
Power supplies connected and tested
•
Controls system commissioned
•
System filled with water and suitably treated
•
Expansion vessel connected and charged
•
Boilers connected to an appropriate flue or chimney
•
Burner parameters are set correctly
When maintaining working on individual appliances or the
TopGas cascade assembly;
•
Allow the gas boilers to cool
•
Switch off the boilers and isolate from the electrical supply
•
Shut off the gas isolating valve to either the individual
appliance or the cascade gas header
•
Close the isolation valves of the appliance (heating flow and
return)
•
Replace all removed covers and cladding on completion of
the repair / maintenance work
•
Do not exceed the maximum operating pressure and
temperature of the gas boiler (see identification plate)
What to do in an emergency if you smell gas
Installation errors, damage, tampering, unauthorised installation
sites or similar can cause gas to escape and result in a risk of
poisoning and explosion. If there is a smell of gas in the building,
proceed as follows:
•
Avoid rooms that smell of gas
•
If possible, open doors and windows fully and ensure
adequate ventilation
•
Do not use naked flames (e.g. lighters, matches)
•
Do not smoke
•
Do not use any electrical switches, mains plugs, doorbells,
telephones
•
Close the gas meter isolator device or the main isolator
•
If possible, close the gas isolator cock in the gas supply
•
Leave the building
•
If you can actually hear gas leaking, leave the building
immediately and ensure that others do not enter the building
•
Alert the fire brigade and police when you are outside the
building
•
Notify the gas supply company or National Grid Transco
0800 111 999 by telephone from outside the building!
