2
GENERAL BOILER INFORMATION
6
2.
1
BOILER DESCRIPTION
The Rio 140 is a room-sealed combination boiler using a small multi-directional fan-assisted balanced flue.
The boiler, providing central heating and domestic hot water at mains pressure, has been designed for use
with a sealed water central heating system. See section 2.11.
2Domestic hot water at mains pressure is supplied from an integral 140 litre unvented storage cylinder.
The pump, expansion vessel and safety devices are all fitted within the boiler.
The boiler will suit central heating systems requiring upto 28.40 kW (96 900 Btu/h).
The boiler is factory set to an output of 18.09 kW for central heating.
The maximum domestic hot water output is fixed at 28.40 kW (96 900 Btu/h) and is capable of providing 13.6
litres/min with a temperature rise of 30°C continuously, and 260 litres in the first 10 minutes (discharge of
cylinder). See section 2.12.
The temperature of both the central heating water and domestic hot water are User controllable. Central
heating from 30 to 90°C and hot water up to 65°C ± 3°C.
A built in timer allows the User to set the operating times for the central heating - domestic hot water is
available continuously.
A 'Heating' switch is provided to allow the central heating to be turned off during the summer months, if
required.
The boiler contains the following automatic safety features:-
An overheat safety thermostat which switches off the boiler if the heat exchanger exceeds 95°C.
A flow switch which switches the boiler off if the flow in the primary circuit is below 7.5 litres/min.
A safety valve which will automatically open at 3 bar to relieve excess pressure in the central heating
system.
An overheat safety thermostat which switches off the boiler if the hot water store exceeds 65°C.
A temperature/pressure relief valve to vent the hot water store in the event of overheating (90 - 95°C/7
bar).
A built in frost protection control that will switch the boiler on if the primary water temperature falls below
5°C.
2.2
REGULATIONS TO COMPLY WITH
It is the law that all gas appliances are installed by competent persons such as British Gas or other CORGI
registered personnel in accordance with the following recommendations:-
Gas Safety (Installation and Use) Regulations 1994 (as amended)
All relevant Building Regulations issued by the Department of the Environment
Building Standards (Scotland) (Consolidation) Regulations issued by the Scottish Development
Department
Model and local Water Undertaking Byelaws
Current IEE Wiring Regulations and IEE Earthing Regulations
Health & Safety Document No. 635 'The Electricity At Work Regulations 1989'
The installation should also be in accordance with the following British Standard Codes of Practice:-
BS 5440:1:1990
Flues
BS 5440:2:1989
Air supply
BS 5449:1990 Forced circulation hot water systems
BS 5546:1990 Installation of hot water supplies for domestic purposes
BS 6700:1987 Design, installation, testing and maintenance of services supplying water
BS 6798:1987 Installation of gas fired hot water boilers
BS 6891:1989 Gas installation
BS 7593:1992 Code of Practice for treatment of water in heating systems
BS 7671:1992 Requirements for electrical installations, IEE Wiring Regulations
Failure to install appliances correctly could lead to prosecution. It is in your own interest, and that of safety to
ensure that the law is complied with.
2.3
DELIVERY
The boiler is supplied in a two packs as following:-
Pack 1
Crated boiler
Literature pack with Flue restrictor and Boiler fittings accessories (see section 14 for contents)
Pack 2
Standard flue assembly
Flue accessories - See section 14 for contents
If the boiler is not to be installed immediately, ensure the packs are stored in a dry place where they will not
be damaged.
Содержание RIO 140
Страница 33: ...10 WIRING DIAGRAMS 33 10 1 ILLUSTRATED WIRING DIAGRAM ...
Страница 34: ...10 WIRING DIAGRAMS 34 10 2 FUNCTIONAL FLOW WIRING DIAGRAM ...
Страница 35: ...11 SEQUENCE OF OPERATION CHARTS 35 11 1 AUTOMATIC IGNITION SEQUENCE ...
Страница 36: ...11 SEQUENCE OF OPERATION CHARTS 36 11 2 OPERATION IN CENTRAL HEATING MODE ...
Страница 37: ...11 SEQUENCE OF OPERATION CHARTS 37 11 3 OPERATION IN DOMESTIC HOT WATER MODE ...
Страница 47: ...NOTE 47 ...
Страница 54: ...6 ELECTRONIC TIMER Description of controls see Figs 3 and 4 ...
Страница 55: ...7 PROGRAMMING THE ELECTRONIC TIMER ...