Ideal Boilers icos system m3080, Installation And Servicing

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icos system condensing -
Installation and Servicing
GENERAL
General
1. The installation must comply with all relevant national and
local regulations.
2. The installation should be designed to work with flow
temperatures of up to 82
0
C.
3. All components of the system must be suitable for a working
pressure of 3 bar and temperature of 110
0
C. Extra care
should be taken in making all connections so that the risk of
leakage is minimised.
The following components are incorporated within the
appliance:
a. Circulating pump.
b. Safety valve, with a non-adjustable preset lift pressure
of 3 bar.
c. Pressure gauge, covering a range of 0 to 6 bar.
d. A 8-litre expansion vessel, with an initial charge pressure
of 0.75 bar.
4. 'Make-up' Water. Provision must be made for replacing
water loss from the system, either :
a. From a manually filled 'make-up' vessel with a readily
visible water level. The vessel should be mounted at
least 150mm above the highest point of the system and
be connected through a non-return valve to the system,
fitted at least 150mm below the 'make-up' vessel on the
return side of the radiators.
or
b. Where access to a 'make-up' vessel would be difficult,
by pre-pressurisation of the system.
The maximum cold water capacity of the system
should not exceed 143 litres, if not pressurized.
However, if the system is to be pressurized, the
efficiency of the expansion vessel will be reduced and
a larger vessel (or smaller system volume) may be
necessary. If the capacity of the vessel is not
considered sufficient for this, or for any other reason,
an additional vessel MUST be installed on the return
to the boiler.
Guidance on vessel sizing is given above.
4 SYSTEM REQUIREMENTS (continued)
5. Filling. The system may be filled by the following method:
Through a temporary hose connection from a 'draw-off' tap,
supplied from a service pipe under mains pressure. Where
the mains pressure is excessive, a pressure reducing valve
must be used to facilitate filling.
i. Thoroughly flush out the whole system with
cold water.
ii. Fill and vent the system until the pressure gauge
registers 1.5 bar, and examine for leaks.
iii. Check the operation of the safety valve by
raising the water pressure until the valve lifts. This
should occur within 0.3 bar of the preset lift pressure.
iv. Release water from the system until the
minimum system design pressure is reached;
1.0 bar if the system is to be pre-pressurised.
C.H. Return
Stop valve
Double check
valve assembly
Test cock
Ecl 2002
Hose unions
Mains
water supply
Temporary hose
(disconnect after filling)