General - Worcester GB162-50 Installation And Servicing Instructions

General

The position selected for installation must allow adequate space for
servicing in front of the boiler.
• in front: 550 mm
• below: 350 mm
• right side: 0 mm
• left side: 0 mm
• above: 40 mm.
In addition, sufficient space may be required to allow lifting access to the
wall mounting bracket. Wall-mounted condensing gas system boilers
must only be used with Worcester flue gas systems, which are certified
with this type of boiler.
Observe the relevant standards, regulations and legislation of the
country or region of final use.
CAUTION: Use this device for its intended purpose only.
DANGER:
Notes relating to the heating system water.
▶ Thoroughly clean and flush the system before it is
filled with water. Use only unsoftened mains water
with the correct dosage of an approved water
treatment product such as Sentinel X100 to fill and
top up the system. For more information about
Sentinel call 0151 420 9563.
▶ When using water treatment, only products suitable
for use with Worcester heat exchangers are
permitted (e.g. Sentinel X100). Your warranty is at
risk if an incorrect water treatment product is used in
conjunction with this appliance. For more
information, contact Worcester Technical Product
Support Department.
▶ It is most important that the correct concentration of
the water treatment product is maintained in
accordance with the manufacturer's instructions.
▶ If the boiler is used in an existing system any
unsuitable additives must be removed by thorough
cleaning. BS 7593 details the steps necessary to
clean a central heating system.
▶ In hard water areas, treatment to prevent lime scale
may be necessary - however, the use of artificially
softened water is not permitted.
▶ Under no circumstances should the boiler be fired
before the system has been thoroughly flushed.
▶ Do not use artificially softened water.
▶ Only plastic pipework containing a polymeric barrier
should be used. Copper pipework must be used for
the first 600 mm.
Safe handling of substances:
No asbestos, mercury or CFCs are included in any part of the boiler and
its manufacture.
Potable water:
All seals, joints and compounds (including flux and solder) and
components used as part of the secondary domestic water system must
be approved by WRAS.
CH Water:
Artificially softened water must not be used to fill the central heating
system.
8
2 General
These installation and maintenance instructions apply to the following
wall-mounted condensing gas boilers:
• GB162-50
• GB162-65
• GB162-80
• GB162-100.
The name of the boiler is made up of the following components:
• GB: Condensing gas boiler
• 162: Type
• 50, 65, 80 or 100: heating range in kW.
The GB162-50/65/80/100 is suitable for use as a single boiler or as part
of a cascade system.
The following technical documentation is available for the
GB162-50/65/80/100:
• Installation and maintenance instructions
• User Manual
• Technical product guide.
If you have any suggestions for improvement or have found any
discrepancies, please do not hesitate to contact us.
CE label
The appliance complies with the basic requirements of
the relevant European directives. Conformity has been
substantiated by the proper documents which, together
with the declaration of conformity, are filed with the
manufacturer.
Energy efficiency
Energy efficiency information is given in the User Instructions of the
appliance.
Frost protection
The boiler has integrated frost protection.
The frost protection switches the boiler on at a CH flow temperature of
7 °C and switches it off at a CH flow temperature of 15 °C.
The central heating system is not protected against frost.
If there is a risk of radiators or pipe sections freezing up,
we recommend setting the pump over-run time to
24 hours. See section 14.3, page 54.
Pump test
If the boiler has not received a heat demand for approximately 4 weeks,
the pump will automatically cycle for 10 seconds every 24 hours. This
pump test is first carried out for 24 hours when first switched back on.
Important general instructions for use
Only use the boiler in accordance with its designated use and the
installation and maintenance instructions. Installation, maintenance and
repair must be carried out by competent service engineers (e.g. Gas
Safe registered).
Only use the boiler in conjunction with the accessories and spare parts
indicated in the installation and maintenance instructions. Other
accessories and consumables may only be used if they are specifically
provided for the designated use and if system performance and safety
are not affected in any way.
The boiler is suitable for connection to fully pumped, sealed water
systems only. Arrangements for draining the system by draining valves
must be provided in the installation pipework.
Subject to technical modifications
As a result of our policy of constant development, there may be small
differences between illustrations, functional steps and technical data.
6720813171 (2015/04)