Worcester C1 User Manual

1.1 Gas Safety (Installation & Use) Regulations 1998.
It is the law that all gas appliances are installed by a competent
person in accordance with the above regulations. Failure to
install appliances correctly could lead to prosecution. It is in
your interest, and that of safety, to ensure compliance with the
law.
1.2 The manufacturers notes must not be taken, in any way, as
overriding statutory obligations.
1.3 The compliance with a British Standard or European Norm
does not, in itself, confer immunity from legal obligations.
1.4 The installation of the appliance must be in accordance with
the relevant requirements of the Gas Safety Regulations, current
IEE Regulations, Building Regulations, Building Standards
(Scotland) and local water bye-laws.
1.5 The installation should follow the recommendations of the
following British Standards unless otherwise indicated and to
any other relevant standards.
BS5440:1 - Flues and ventilation for gas appliances: Flues
BS5440:2 - Flues and ventilation for gas appliances: Air supply.
BS5449 - Central heating for domestic premises.
BS5546:1 - Installation of gas hot water supplies.
BS6700 - Domestic water supply (when relevant).
BS6798 - Installation of gas fired hot water boilers.
BS6891 - Low pressure gas pipework installations up to 28mm
(R1).
BS7593 - Water treatment.
1.6 The appliance and/or components must conform, where
applicable, to all relevant Directives.
1.7 In accordance with COSSH the appliance does not contain
any substances which are harmful to health.
1.8 Product Liability regulations indicate that, in certain
circumstances, the installer can be held responsible, not only for
mistakes on his part but also for damage resulting from the use
of faulty materials. We advise that to avoid any risk, only
quality approved branded fittings are used.
1.9 These instructions cover, as far as possible, the foreseeable
situations which may arise. Contact Worcester Heat Systems
Technical Department, Telephone: 08705 266241, for advice on
specific installations.
2.1 General Information
The appliance is set to give the maximum output of 28 kW to the
domestic hot water and to the heating system. The hot water
flow rate is limited to a nominal 10 l/min at a maximum
temperature rise of 40°C.
The sanitary water section of the appliance is suitable for mains
water pressure of upto 10bar.
2.2 Electrical Supply
230V - 50Hz. Load 180 watts. External fuse 3A, Internal fuses F1
- 2A, F2 - 1.6A (20mm).
2.3 Gas Supply
The appliance requires a maximum of 3.38 m
3
/h of natural gas
(G20). The installation and the connection of the gas supply to
the appliance must be in accordance with BS6891.
The meter or regulator should deliver a dynamic pressure of 20
mbar (G20) at the appliance, which is equivalent to about 18.5
mbar at the gas valve inlet pressure test point.
2.4 Installation
The appliance is suitable for indoor installation only and for use
with a sealed system only.
Do not place anything on top of the appliance.
It is a room sealed appliance and a separate combustion air
supply is not required in any room or compartment in which the
appliance is fitted.
If the appliance is fitted in a cupboard or a compartment is built
around it after installation, then the structure must conform to
the requirements of BS6798 and BS5440 Part 2. However,
because of the low casing losses, there is not a need for the
cooling ventilation openings in the compartment. The spaces
specified in Section 6. Air Supply must be provided.
There is space for the service pipes to pass at the back of the
appliance.
2.5 Flue
The flue can be to the right, left or rear. A vertical flue system is
available.
The flue terminal, on the outside wall, must not be obstructed or
damaged.
An internal flue fitting kit is available. Fitting instructions are
given in Section 11.9.
2.6 Controls
Controls for switching the appliance On or Off and for adjusting
the CH and DHW temperatures. The CH control knob also
switches the CH off and on.
A facia mounted programmer is supplied as standard.
A room thermostat and/or an externally mounted programmer
for mains voltage operation may be connected to the appliance.
Only double insulated mains voltage controls not requiring
an earth can be used.
2. Introduction1. Installation Regulations
2
1. Installation Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 9. Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 10. Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
3. Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4 11. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
4. Siting the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6 12. Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
5. Flue Terminal Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7 13. Instructions to the User . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
6. Air Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7 14. Inspection and Servicing . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
7. Sealed System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 15. Replacement of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
Open Vent System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 16. Short Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 28
8. Domestic Hot Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9 17. Operational Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . Page 30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18. Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32
Contents

Worcester C1 Specifications

General

Brand	Worcester
Model	C1
Category	Boiler
Language	English