Halstead VBX 18 Installation And Servicing Instructions Download Page 3

1

IT IS A STATUTORY REQUIREMENT THAT ALL GAS
APPLIANCES ARE INSTALLED BY COMPETENT PERSONS,
(i.e. CORGI REGISTERED INSTALLERS) IN ACCORDANCE
WITH THE GAS SAFETY (INSTALLATION AND USE)
REGULATIONS (CURRENT EDITION). FAILURE TO
COMPLY WITH THESE REGULATIONS MAY LEAD TO
PROSECUTION.

These appliances have been tested and certified in order to
satisfy the necessary European Directives and comply with the
latest Building Regulations, including the efficiency requirements
of the SEDBUK scheme.
Gas Appliance Directive

90/396/EEC

Efficiency of Hot Water Boilers Directive

92/42/EEC

Low Voltage Directive

93/68/EEC

Electromagnetic Compatibility Directive

92/31/EEC

No modifications to these appliances should be made unless they
are fully approved by the manufacturer.
Appliance installation must be carried out by a competent person
and must be in accordance with the current legislation in force at
the time of installation, in the country of destination.
The manufacturer's instructions must not be taken as overriding
any statutory requirements.

GAS LEAKS. DO NOT OPERATE ANY 
ELECTRICAL SWITCHES, OR USE A NAKED 
FLAME. TURN OFF THE GAS SUPPLY.

VENTILATE THE AREA BY OPENING DOORS AND
WINDOWS. CALL OUT YOUR LOCAL GAS SUPPLIER.
Control of Substances Hazardous to Health

Under Section 6 of the Health and Safety at Work Act 1974, it is
required to provide information on substances hazardous to
health.
The adhesives and sealants used in this appliance are cured and
give no known hazard in this state.
Insulation Pads - These can cause irritation to skin, eyes and the
respiratory tract. If you have a history of skin complaints you may
be susceptible to irritation. High dust levels are usual only if the
material is broken. Normal handling should not cause discomfort,
but follow normal good hygiene and wash your hands before
eating, drinking or going to the lavatory. If you do suffer irritation
to the eyes or severe irritation to the skin seek medical attention.

Gas and Electricity Consumer Council (Energywatch)

Energywatch is an independent organisation, which protects the
interests of gas users. If you need advice concerning energy
issues, they may be contacted on their consumer help line
number: 08459 060708, or via their web site;
http://www.energywatch.org.uk.

The appliances incorporate a microprocessor based, fully
modulating air/gas ratio control system with direct burner
ignition, which provides a modulated heat output to central
heating (CH) demand, and with internal frost protection provided
as standard. 
The heat exchanger is constructed from stainless steel, and there
is the option for routing the flow and return connections either via
top or bottom connections.
The appliances may be used with any certified mains voltage
room thermostat, and can operate without the need for an
automatic bypass valve, however if thermostatic radiator valves
are installed it is recommended that one radiator is fitted with
lockshield valves, (normally in the bathroom), to allow the pump
overrun facility to operate correctly.

1.1

IMPORTANT INFORMATION

1.2

GENERAL DESCRIPTION

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Summary of Contents for VBX 18

Page 1: ...T R A I N I N G 0 1 9 2 6 8 3 4 8 3 8 Halstead Boilers Limited 20 22 First Avenue Bluebridge Industrial Estate Halstead Essex C09 2EX Telephone 01787 272800 Sales Direct Line 01787 475557 Fax 01787 47...

Page 2: ...nctional Flow Wiring Diagram 25 8 FAULT FINDING 26 8 1 General 26 8 2 Diagnostic LED Indicators 26 8 3 Faulting Finding Codes 26 8 4 Central Heating Fault Finding 26 9 REPLACEMENT OF PARTS 28 9 1 Igni...

Page 3: ...appliance are cured and give no known hazard in this state Insulation Pads These can cause irritation to skin eyes and the respiratory tract If you have a history of skin complaints you may be suscept...

Page 4: ...8 9 kg h 2 36 1 43 Seasonal Efficiency 90 4 91 0 92 4 93 1 Seasonal Efficiency SEDBUK Band A Nox Classification Class 5 Min Central Heating System Pressure Bar 0 1 1 m H2O Max Central Heating System P...

Page 5: ...ue max rate Propane 0 019 0 005 Flue products mass flow rate Nat Gas g s 13 7 8 3 Flue products mass flow rate Propane g s 13 7 8 3 Gas Valve Offset min rate Pa 3 0 Connections Gas 15 mm compression C...

Page 6: ...user interface from its housing see figure 22 c Lower the controls front d Unplug the electrical leads from the PCB Refer to section 7 e Unplug the BCC boiler chip card if fitted f Remove the PCB pla...

Page 7: ...m Roof terminal with rain cover and pitched roof flashing kit a b 3c If the standard horizontal terminal is likely to cause nuisance to neighbours or buildings because of excess pluming then this part...

Page 8: ...ded that to prevent dust the insulation be dampened prior to removal and that a protective mask is worn when changing or handling the insulation material Refer to Figure 43 a Ensure supply voltage is...

Page 9: ...me equivalent length 45 Extension Elbow Allows an additional bend in the flue and has an equivalent length of 775 mm Vertical Turret Socket For use with elevated horizontal flues and vertical terminal...

Page 10: ...e that all joints and seals are correctly re fitted Note The gas control valve is factory set and sealed and is not adjustable If the gas control valve is changed then when the appliance is running th...

Page 11: ...imitations MUST be observed when siting the appliance a The appliance is not suitable for external installations The position selected for installation should be within the building unless otherwise p...

Page 12: ...The complete installation must be tested for gas tightness 3 7 CENTRAL HEATING SYSTEM a The appliances are designed for open vented central heating water systems but may be fitted to a sealed central...

Page 13: ...INDER SINGLE FEED INDIRECT CYLINDERS ARE NOT SUITABLE The domestic hot water cylinder must be of the double feed fully indirect coil type 3 15 SEALED WATER SYSTEMS The installation must comply with th...

Page 14: ...cuit to ensure pump over run functionality 3 18 PRESSURE GAUGE A pressure gauge with a set pointer and covering at least 0 to 4 bar 0 to 60 lb in shall be fitted permanently to the system in a positio...

Page 15: ...plete electrical isolation of the appliance Either a 3A fused three pin plug and un switched shuttered socket outlet both complying with BS 1363 or a 3A fused double pole switch having a 3 mm contact...

Page 16: ...per template in the required position ensuring that the necessary clearances are achieved Ensure squareness by hanging a plumb line b Mark the position of the wall mounting plate fixing holes 4 c Mark...

Page 17: ...products are available from Grundfos Pumps Ltd on 01525 850000 and Pump House on 0115 922 2211 22 ROUTINE SERVICING 6 6 1 COMBUSTION CHECK The appliance incorporates a flue sampling point on the appli...

Page 18: ...flue elbow e Fit the flue terminal to the flue system ensuring that the duct joints are not disturbed and that the external sealing ring is seated against the outside wall f Finally use the internal...

Page 19: ...cluded in the appliance specification ANTI CYCLE DEVICE When the appliance cycles on its central heating control thermostat a slow cycle device operates The timer set to 5 minutes is activated after t...

Page 20: ...s tightness in accordance with BS 6891 1988 Open all doors and windows extinguish naked lights and DO NOT SMOKE whilst purging the gas line It is recommended where possible to flush the CH system with...

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