Ideal Boilers icos system m3080, Установка и обслуживание

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8 icos system condensing -
Installation and Servicing
GENERAL
3 SYSTEM REQUIREMENTS
Notes
a. The method of filling, refilling, topping up or flushing
sealed primary hot water circuits from the mains via
a temporary hose connection is only allowed if
acceptable to the local water authority.
b. Antifreeze fluid, corrosion and scale inhibitor fluids
suitable for use with boilers having aluminium heat
exchangers may be used in the central heating
system.
Advice should be sought from a local water
treatment company.
THERMOSTATIC RADIATOR VALVES (TRV)
Caradon Ideal Limited recommend that heating systems
utilising full thermostatic radiator valve control of temperature in
individual rooms should also be fitted with a room thermostat
controlling the temperature in a space served by radiators not
fitted with such a valve as stated in BS. 5449.
When thermostatic radiator valves are used, the space heating
temperature control over a living area having a heating
requirement of at least 0.9kW (3000Btu/h) of the boiler heat
output should be achieved using a room thermostat whilst
other rooms are individually controlled by thermostatic radiator
valves. A higher proportion of TRVs may be used, provided that
a bypass between the boiler flow and return is fitted, to ensure
adequate flow when all TRVs are closed - however this is NOT
recommended as a large proportion of TRVs can restrict water
circulation and inhibit the condensing mode of condensing
boilers, reducing fuel economy.
For further information refer to the 'Good Practice Guide 143', a
publication of the Energy Efficiency Office, available from the
Building Research Establishment, Garston, Watford WD2 7JR.
Tel: 01923 664258.
ELECTRICAL SUPPLY
Wiring external to the appliance MUST be in accordance with
the current I.E.E. (BS.7671) Wiring Regulations and any local
regulations which apply.
The point of connection to the mains should be readily
accessible and adjacent to the boiler.
CONDENSATE DRAIN - Refer to Frames 28, 48
A condensate drain is provided on the boiler. This drain must
be connected to a drainage point on site. All pipework and
fittings in the condensate drainage system MUST be made of
plastic -
no other materials may be used.
IMPORTANT.
Any external runs must be insulated
The drain outlet on the boiler is standard 3/4in (21.5mm)
overflow pipe.
Safety valve setting bar 3.0
Vessel charge pressure bar 0.5 to 0.75
System pre-charge pressure bar None 1.0
System volume Expansion vessel
(litres) volume (litres)
25 1.6 1.8
50 3.1 3.7
75 4.7 5.5
100 6.3 7.4
125 7.8 9.2
150 9.4 11.0
175 10.9 12.9
190 11.9 14.0
200 12.5 14.7
250 15.6 18.4
300 18.8 22.1
For other system volumes
multiply by the factor across
0.063 0.074
Pressure Drop Across Boiler (metres w
ater)
0.5
1.0
Boiler Output (kW)
8.8 11.7 14.7 17.6 20.5 23.4
Ecl 1603
Graph 1 - Water flow rate and pressure loss
The hydraulic resistance of the boilers, at MAXIMUM OUTPUT, with
an 11
o
C (20
o
F) temperature differential, is shown in Graph 1.