Keston 30C Manuel utilisateur

User Guide

Gas Fired Condensing

Combination Boiler

30C

The Keston 30C

34 West Common Road

Hayes, Bromley, Kent BR2 7BX

Tel. + 44 (0)20 8462 0262 Fax. +44 (0)20 8462 4459

email : [email protected] web : www.keston.co.uk

COMPLIANT WITH BUILDING REGULATION PART L1 & L2

SEDBUK A RATED

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KESTON 30C

(Natural Gas Only)

30 G.C. Appliance No. 47-930-03

THE BENCHMARK SERVICE INTERVAL RECORD MUST BE COMPLETED AFTER EACH SERVICE

Keston is a member of the Benchmark scheme and fully supports the aims of the programme.

Benchmark has been introduced to improve the standards of installation and commissioning of central

heating systems in the UK and to encourage the regular servicing of all central heating systems to

ensure safety and efficiency.

30C

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INTRODUCTION

The Keston 30C is a wall mounted, room sealed, condensing combination boiler, featuring full sequence automatic spark

ignition and fan assisted combustion.

Due to the high efficiency of the boiler, condensate is produced from the flue gases and this is drained to a suitable disposal

point through a plastic waste pipe at the base of the boiler. A condensate 'plume' will also be visible at the flue terminal.

The Keston 30C is a combination boiler providing both central heating and instantaneous domestic hot water.

SAFETY

Current Gas Safety (Installation & Use) Regulations or rules in force.

In your own interest, and that of safety, it is the law that this boiler must be installed by a Gas Safe Registered Engineer, in

accordance with the above regulations.

In IE, the installation must be carried out by a Registered Gas Installer (RGII) and installed in accordance with the current

edition of I.S. 813 “Domestic Gas Installations”, the current Building Regulations and reference should be made to the

current ETCI rules for electrical installation.

It is essential that the instructions in this booklet are strictly followed, for safe and economical operation of the boiler.

FOR ANY QUERIES PLEASE RING THE

KESTON CONSUMER HELPLINE : 0208 462 0262

NOTE. BOILER RESET PROCEDURE -

To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.

The boiler will repeat the ignition sequence.

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ELECTRICITY SUPPLY

This appliance must be earthed.

Supply: 230 V ~ 50 Hz. The fusing should be 3A.

Important Notes

• This appliance must not be operated without the casing correctly fitted and forming an adequate seal.

• If the boiler is installed in a compartment then the compartment MUST NOT be used for storage purposes.

• If it is known or suspected that a fault exists on the boiler then it MUST NOT BE USED until the fault has been corrected

by a Gas Safe Registered Engineer or in IE a Registered Gas Installer (RGII).

• Under NO circumstances should any of the sealed components on this appliance be used incorrectly or tampered with.

• 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 instructions concerning use of the

appliance by a person responsible for their safety.

• Children should be supervised to ensure that they do not play with the appliance.

In cases of repeated or continuous shutdown a Gas Safe Registered Engineer or in IE a Registered Gas Installer (RGII)

should be called to investigate and rectify the condition causing this and carry out an operational test. Only the manufacturers

original parts should be used for replacement.

MINIMUM CLEARANCES

Top clearance

Ensure 30mm (1¼") clearance above the highest elbow off the boiler, 100mm (4") below, 2.5mm (1/8") at the sides and

450mm (17 3/4"))at the front of the boiler casing must be allowed for servicing.

Bottom clearance

Bottom clearance after installation can be reduced to 5mm.

This must be obtained with an easily removable panel, to enable the consumer to view the system pressure gauge, and to

provide the 100mm clearance required for servicing.

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A. Pre-heat On/off

B. DHW temperature control

C. CH temperature control

D. Mode Control

E. Boiler Status

BOILER CONTROLS

F. Burner ‘on’ indicator

G. Pressure Gauge

H. Condensate Drain

J. Economy Mode

LEGEND

A B E F C D

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TO LIGHT THE BOILER. (REFER TO BOILER CONTROLS)

If a programmer is fitted refer to separate instructions for the programmer before continuing.

1. Check that the electricity supply to the boiler is off.

2. Set the mains Off/Summer/Winter control (D) to ‘Off’.

3. Set the Domestic Hot Water temperature control (B) and Central Heating temperature control (C) to ‘max’.

4. Set the preheat control (A) to ‘on’.

5. Ensure that all hot water taps are turned off.

6. Switch ON electricity to the boiler and check that all external controls, e.g. programmer and room thermostat, are ON.

7. Set the Off/Summer/Winter control to winter ( ).

The boiler will commence the ignition sequence supplying heat to the central heating, if required.

Note.

In normal operation the boiler status display (E) will display messages (see pages 14 & 15).

Boiler frost protection - boiler will fire if temperature is less than 5 degrees C.

During normal operation the burner on indicator (F) will remain illuminated when the burner is lit.

Note: If the boiler fails to light after five attempts the following fault messages will be displayed

“Ignition Lockout” -

“1 Check other gas appliances” - “2 Reset boiler” - “3 Contact Installer”

To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.The boiler will repeat the

ignition sequence. If the boiler still fails to light consult a Registered Gas Installer or in IE a Registered Gas Installer (RGII).

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OPERATION

Winter Mode - i.e. CH and DHW required.

Ensure the off/summer/winter control (D) is set to winter ( )

The boiler will fire and supply heat to the radiators but will give priority to DHW on demand.

The DHW preheat will operate as described under 'Summer conditions' during periods when there is no call for CH.

Summer Mode - i.e. DHW only required.

Set the mode knob control to Summer ( ).

Set the CH external controls to OFF.

Preheat will operate with the preheat switch (A) set to ON.

The boiler will fire periodically for a few seconds to maintain the DHW calorifier in a pre-heated condition. The average time

period between firing is 90 minutes. This may vary considerably due to the surrounding ambient temperature of the boiler.

The boiler will fire whenever there is a demand for DHW.

The boiler preheat facility can be immobilised by turning the preheat switch (A) to OFF. This will stop the boiler operating for

short periods. This facility is primarily provided for boiler installations in a sensitive area (i.e. bedroom etc.).

Note.

If the pump and diverter valve have not operated in the last 24 hours they will run briefly to ensure they do not become

seized.

CONTROL OF WATER TEMPERATURE

Domestic Hot Water

The DHW temperature is limited by the boiler controls to 64oC maximum at low draw-off rate, adjustable via the DHW

temperature control (B).

Due to system variations and seasonal temperature fluctuations DHW flow rates/temperature rise will vary, requiring adjustment

at the draw off tap : the lower the rate the higher the temperature, and vice versa.

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Central Heating

The boiler controls the central heating radiator temperature to a maximum of 80oC, adjustable via the CH temperature control (C).

The Keston 30C is a high efficiency combination boiler which is most efficient when operating in condensing mode.

The boiler will operate in this mode if the CH temperature control (C) is set to the ‘e’ position (economy mode) or below. This

control should be set to a maximum for very cold periods.

TO SHUT DOWN THE BOILER

Set the mode knob control to OFF.

TO RELIGHT THE BOILER

Repeat the procedure detailed in 'To light the boiler'.

FROST PROTECTION

If no frost protection is provided and frost is likely during a short absence from home, leave the heating controls (if fitted) at

a reduced temperature setting. For longer periods, the entire system should be drained.

If the system includes a frost thermostat then the timer can be left off (if fitted). The mains supply should be left switched ON,

with the boiler thermostat left in the normal running position.

BOILER OVERHEAT PROTECTION

The boiler controls will shut down the boiler in the event of overheating. Should this occur, a fault code

“Overheat Lockout”

- “1 Fill system to 1.0 bar” - “2 Bleed radiators” - “3 Check radiator valves open” - 4 Reset boiler” - “5

Contact Installer”

will be displayed.

Reset boiler by turning the mode control knob (D) to reset position and immediately turn knob back to required setting. The

boiler will relight. If the fault recurs, turn off the boiler and consult a Gas Safe Registered Engineer or in IE a Registered Gas

Installer (RGII).

Approx. flow temperatures for the boiler thermostat settings are:

Knob Setting Flow Temperature

Minimum 40oC(104oF)

Maximum 64oC(147oF)

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LOSS OF SYSTEM WATER PRESSURE

The gauge (G) indicates the central heating system pressure.

If the pressure is seen to fall below the original installation

pressure of 1-2 bar over a period of time then a water leak

may be indicated. In this event conduct the re-pressurising

procedure as shown below. If unable to do so or if the pressure

continues to drop a Gas Safe Registered Engineer or in IE a

Registered Gas Installer (RGII) should be consulted.

THE BOILER WILL NOT OPERATE IF THE PRESSURE HAS

REDUCED TO LESS THAN 0.3 BAR UNDER THIS

CONDITION.

In this case the boiler will display

“Low water pressure” -

“1 fill system to 1.0 bar” - “2 Bleed radiators” -

“3 Contact installer”

To re-pressurise:

1. Ensure filling loop isolation valves are closed.

2. Remove the left hand cap.

3. Attach on the filling loop.

4. Turn the filling loop isolation valves to the open position.

The system will now fill.

5. Wait for pressure gauge to reach 1 to 1.5 bar.

6. Close the filling loop isolation valves.

7. Disconnect the filling loop at left hand side and angle

upwards.

8. Replace cap.

3G9866

CLOSED

POSITION

CLOSED

POSITION

OPEN

POSITION

PRESSURE GAUGE

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