14
8.1
FLUE SYSTEM GENERAL REQUIREMENTS
Detailed recommendations for the flue system are given in
BS5440-1
for equipment of rated input not exceeding
70kW net,
BS6644
for equipment above 70kW net and
IGE/UP/10
for equipment of rated input above 54kW net.
The following notes are intended to give general guidance only.
8.2
APPROVED FLUE SYSTEM
The approved flue system is not suitable for use external to the building. If external routes cannot be
avoided, a flue system manufacturer should be consulted to supply a suitable alternative.
When used as a Type C (balanced flue) appliance, the approved, purpose designed adaptive flue system should
be used. For further details, please contact Lochinvar Limited.
When used as a Type B (conventional flue) appliance, a suitable flue system constructed of Stainless Steel or
Polypropylene with a temperature rating in excess of 120
C should be used.
Aluminium flue pipe must not be
used on this appliance as it may lead to premature failure of the heat exchanger and will invalidate the
warranty.
8.3
INSTALLATION PRECAUTIONS
The approved flue system is rated to 120
C max. To prevent the exhaust temperature exceeding this,
the appliance is supplied with a flue gas temperature sensor.
This must be fitted during the
installation of the flue system. Failure to do so may lead to severe personal injury, death or
substantial property damage.
The heater must not be operated unless the complete flue system is installed. This includes the water
heater connections, concentric adaptor (if required) flue pipes, air ducts (if required) and terminals. If
discharging at low level, a suitable flue guard must be installed.
Due to the condensing nature of the water heater, long external routes should be avoided to prevent the
condensate freezing within the flue system unless necessary precautions are taken to insulate the flue.
During assembly precaution should be taken to ensure that the internal sealing ring is seated correctly.
Due to the close tolerances in the flue system, it may be necessary to use a twisting action to fit the
joints together. No lubrication other than water should be used.
8.4
MAXIMUM LENGTH
Details of maximum flue lengths can be found in
Table 3.1 Technical Data
8.5
FLUE DISCHARGE
The flue system must ensure safe and efficient operation of the equipment to which it is attached, protect the
combustion process from wind effects and disperse the products of combustion to open external air.
The flue must terminate in a freely exposed position and be so situated as to prevent the products of combustion
entering any opening in a building.
Under certain operating and weather conditions, the EcoShield heater may generate a plume at the terminal.
Consideration should be given to the nuisance this may cause and the terminal should be sited accordingly.
For further information on terminal locations, please refer to
Figure 8.1
and
Table 8.1
.
8.6
CONDENSATE DRAIN
If the flue system rises at an angle of at least 3
(50mm per metre), no additional condensate drain will be
required. Failure to provide an adequate rise in the flue system may lead to pooling of condensate which may
lead to premature failure of the flue system.
Summary of Contents for EcoShield Series
Page 44: ...44 ...
