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INTRODUCTION
The New Condens FS Series boilers are fully automatically
controlled, floor standing, fanned, super efficient condensing
appliances.
The Siemens LMS14 Boiler Management Unit (BMU) built
into the appliance is a comprehensive boiler control unit
which provides all supervisory and control functions re-
quired for burner operation, space heating and DHW heat-
ing. It also offers modular system extensions in the form of
integrated communication interfaces.
Through a sophisticated control system combined with wo-
ven mesh premix burner technology and an aluminium heat
exchanger, the boilers are capable of high operating
efficiencies of 98.6% (gross) and low emissions.
The boilers can draw their combustion air from the room or
via ducting from outside.
These boilers are certified to meet the requirements of the
EC
Gas Appliance Directive, Boiler Efficiency Directive, EMC,
Low Voltage Directive and 2009/125/EC Ecodesign Di-
rective
SAFETY
Current Gas Safety (Installation and Use) Regulations or rules
in force
The appliance is suitable only for installation in GB and IE and
should be installed in accordance with the rules in force.
In GB, the installation must be carried out by a Gas Safe Reg-
istered Engineer or in IE by a competent person. It must be
carried out in accordance with the relevant requirements of
the:
Gas Safety (Installation and Use) Regulations
The appropriate Building Regulations either The Building Reg-
ulations, The Building Regulations (Scotland), Building Regula-
tions (Northern Ireland).
The Water Fittings Regulations or Water byelaws in Scotland.
The Current I.E.E. Wiring Regulations.
Where no specific instructions are given, reference should be
made to the relevant British Standard Code of Practice.
In IE, the installation must be carried out by a Competent Per-
son and installed in accordance with the current Building Reg-
ulations and reference should be made to the current
rules for electrical installation.
The boilers have been tested and conform to EN 15502-1 for
use with Natural Gas
SAFE HANDLING OF SUBSTANCES
No asbestos, mercury or CFCs are included in any part of the
boiler or its manufacture.
FOUNDATION /
boiler must stand on a floor which must be flat, level
The
and of a suitable load bearing capacity to support the
weight of the boiler (when filled with water) and any
ancillary equipment.
Ideally
the boiler should be placed on a plinth exceeding
the plan area of the boiler by 75mm on each side and at
least 100mm high.
The boiler must not be fitted outside.
GAS SUPPLY
The local gas supplier should be consulted, at the installa-
tion planning stage, in order to establish the availability of
an adequate supply of gas. An existing service pipe must
NOT be used without prior consultation with the local gas
supplier.
A gas meter can only be connected by the local gas
supplier or by a Gas Safe Registered Engineer or in IE by a
competent person.
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with
the rate of gas supply required. A minimum working gas
pressure of 20mbar MUST be available at the boiler Inlet
for Natural gas.
Do not use pipes of smaller size than the boiler inlet gas
connection.
The complete installation MUST be tested for gas
soundness and purged in accordance with the appropriate
standards.
Gas Boosters
A gas booster is required if the gas pressure
available at the boiler is lower than that required by
the boiler manufacturer to attain the flow rate for
maximum burner input rating.
Location of the booster requires careful consideration but
should preferably be closer to the burner rather than the
gas meter. Ventilation should also be considered to ensure
ambient temperature do not exceed designed
recommendations.
Further guidance is provided in IGE/UP/2.
FROST PROTECTION
The boiler has built into its control system the facility to protect
the boiler only against freezing.
The set point for the boilers frost protection can be set via the
ETCI
Siemens LMS Controller
Frost protection is ensured, independent of heat requests or
connected plant components. Therefore, boiler control checks
frost protection autonomously and causes the burner to be
started, if necessary.
Frost protection for the boiler is activated whenever the boiler
temperature drops below the frost protection set point.
LOCATION OF BOILER
9
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