IDEAL Viscount GTS 14, Установка и обслуживание

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5 Viscount GTS -
Installation & Servicing
GENERAL
FLUE INSTALLATION
IMPORTANT
It is the responsibility of the installer to ensure, in practice, that
products of combustion discharging from the terminal cannot
re-enter the building or any other adjacent building through
ventilators, windows, doors, other sources of natural air
infiltration, or forced ventilation / air conditioning.
If this should occur the appliance MUST be turned OFF,
labelled as 'unsafe' and corrective action taken.
The flue must be installed in accordance with the appropriate
standards listed on page 4.
WATER CIRCULATION SYSTEM
The system pump MUST be connected to the boiler.
The boiler must NOT be used for direct hot water supply. The
hot water storage cylinder MUST be of the indirect type.
The appliances are NOT suitable for gravity central heating nor
are they suitable for the provision of gravity domestic hot water.
The hot water cylinder and ancillary pipework, not forming part
of the useful heating surface, should be lagged to prevent heat
loss and any possible freezing - particularly where pipes run
through roof spaces and ventilated underfloor spaces.
The boiler must be vented.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least 1/2" BSP
nominal size and be in accordance with BS. 2879.
The central heating system should be in accordance with the
relevant standards listed on page 4.
Due to the design of the boiler the heat stored within the
castings at the point of shutdown of the burner must be
dissipated in order to avoid overheating. In order to allow
pump operation after burner shutdown the boiler control
system should incorporate a pump overrun device.
WATER TREATMENT FOR HOT WATER AND
HEATING BOILERS
There is a basic need to treat the water contained in all heating
and indirect water systems, particularly open vented systems.
It is assumed, incorrectly, that because boilers are operating in
conjunction with what is apparently a closed circuit an open
vented system will not, under normal circumstances, allow
damage or loss of efficiency due to hardness salts and
corrosion once the initial charge of water has been heated up a
few times.
1mm of lime reduces the heat transfer from metal to water by
10%.
In practice the deposition of these salts is liable to cause
noises from the boiler body or even premature boiler failure.
Corrosion and the formation of black iron oxide sludge will
ultimately result in premature radiator failure.
Open vented systems are not completely sealed from the
atmosphere if proper venting and expansion of system water is
to be achieved. The same tank is used to fill the system with
water and it is through the cold feed pipe that system water
expands into the tank when the boiler passes heat into the
system.
Conversely, when the system cools, water previously expelled
is drawn back from the tank into the system together with a
quantity of dissolved oxygen.
Even if leakage from the heating and hot water system is
eliminated there will be evaporation losses from the surface of
the tank which, depending upon ambient temperature, may be
high enough to evaporate a large portion of the system water
capacity over a full heating season.
There will always be corrosion within a heating or hot water
system to a greater or lesser degree, irrespective of water
characteristics, unless the initial fill water from the mains is
treated. Even the water in closed systems will promote
corrosion unless treated. For the reason stated,
Ideal Stelrad
Group strongly recommend that when necessary the systems
is thoroughly cleaned, prior to the use of stable inhibitor, which
does not require continual topping up to combat the effects of
hardness salts and corrosion on the heat exchangers of the
boiler and associated systems.
Ideal Stelrad Group advise contact directly with specialists on
water treatment such as:
GE Betz Ltd, Sentinel Division, Foundry Lane,
Widnes, Cheshire, WA8 8UD,
Tel: +44 (0) 151 424 5351
Fernox Manufacturing Co. Ltd., Cookson Electronics,
Forsyth Road, Sheerwater, Woking, Surrey, GU21 5RZ
Tel: +44 (0) 799 521 133
ELECTRICAL SUPPLY
WARNING This appliance must be earthed.
The control system requires a 230V - 50Hz mains supply.
Wiring external to the appliance MUST be in accordance with
the current I.E.E. (BS7671) Wiring Regulations and any local
regulations which apply.
Burner and Pump
These may be 1ph or 3ph. Refer to manufacturer's
instructions.
The point of connection to the mains should be readily
accessible and adjacent to the boiler.
BURNER MOUNTING
When mounting the burner to the boiler front door, check for
soundness around the burner flange and its gasket. If there is
space between the burner blast tube and door insulation after
mounting the burner a suitable insulation material should be
used to pack this space.