IDEAL Logic HEAT 12, Installation And Servicing, Page: 14 / 72

14
Ideal Logic Heat -
Installation and Servicing
general
safety valve setting 3.0 bar 2.5 bar 2.0 bar
Vessel charge and initial 0.5 1.0 1.5 0.5 1.0 1.5 0.5 1.0
system pressure bar bar bar bar bar bar bar bar
Total water content of system Expansion vessel volume litres
litres
25 2.1 2.7 3.9 2.3 3.3 5.9 2.8 5.0
50 4.2 5.4 7.8 4.7 6.7 11.8 5.6 10.0
75 6.3 8.2 11.7 7.0 10.0 17.7 8.4 15.0
100 8.3 10.9 15.6 9.4 13.4 23.7 11.3 20.0
125 10.4 13.6 19.5 11.7 16.7 29.6 14.1 25.0
150 12.5 16.3 23.4 14.1 20.1 35.5 16.9 30.0
175 14.6 19.1 27.3 16.4 23.4 41.4 19.7 35.0
200 16.7 21.8 31.2 18.8 26.8 47.4 22.6 40.0
225 18.7 24.5 35.1 21.1 30.1 53.3 25.4 45.0
250 20.8 27.2 39.0 23.5 33.5 59.2 28.2 50.0
275 22.9 30.0 42.9 25.8 36.8 65.1 31.0 55.0
300 25.0 32.7 46.8 28.2 40.2 71.1 33.9 60.0
Multiplying factors for
other system volumes 0.0833 0.109 0.156 0.094 0.134 0.237 0.113 0.20
7 sEaLED sysTEM REqUIREMENTs - continued
The boiler does not normally need a bypass but at least some radiators on the heating circuit, of load of at least 10% of the
minimum boiler output, must be provided with twin lockshield valves so that this minimum heating load is always available. See
note regarding thermostatic radiator valves on page 9.
Note.
Systems incorporating zone valves which could completely cut off the flow through the system must also include a bypass.
BaLaNCINg
8 sysTEM BaLaNCINg
1. Set the programmer to ON.
Close the manual or thermostatic valves on all radiators,
leaving the twin lockshield valves (on the radiators referred
to above) in the OPEN position.
Turn up the room thermostat and adjust the lockshield
valve to give an uninterrupted flow through the radiator.
These valves should now be left as set.
9 WaTER TREaTMENT
CENTRaL hEaTINg
The Logic Heat range of boilers have an ALUMINIUM alloy heat exchanger.
IMpORTaNT.
The application of any other treatment to this product may render the
guarantee of Ideal stelrad group Invalid.
Ideal stelrad group
recommend Water Treatment in accordance with
the Benchmark Guidance Notes on Water Treatment in Central Heating
Systems.
If water treatment is used
Ideal stelrad group recommend only the use of
Scalemaster Gold 100,
FERNOX, MB-1, ADEy MC1, SENTINEL-X100, CALMAG
CM100
inhibitors and associated water treatment products, which must be
used in accordance with the manufacturers’ instructions.
Notes.
1.
It is most important that the correct concentration of the water
treatment products is maintained in accordance with the manufacturers’
instructions.
2.
If the boiler is installed in an existing system any unsuitable additives
MUST be removed by thorough cleansing. BS 7593:2006 details the
steps necessary to clean a domestic heating system.
3.
In hard water areas, treatment to prevent lime scale may be necessary
- however the use of artificially softened water is NOT permitted.
4.
Under no circumstances should the boiler be fired before the system
has been thoroughly flushed.
For further information contact:
Fernox Cookson Electronics
Forsyth Road, Sheerwater, Woking
Surrey GU21 5RZ
+44 (0) 870 601 5000
Sentinel Performance Solutions
The Heath Business & Technical Park
Runcorn, Cheshire WA7 4QX
Tel: 0800 389 4670
www.sentinel-solutions.net
Scalemaster Water Treatment Products
Emerald Way, Stone, Staffordshire
ST15 0SR
Tel:01785 811636
Calmag Ltd.
Unit 3-6, Crown Works
Bradford Road, Sandbeds, Keighley
West yorkshire BD20 5LN
Tel: +44 (0) 1535 210 320
Adey Professional Heating Solutions
Gloucester Road,
Cheltenham GL51 8NR
Tel: +44 (0) 1242 546700
2. Open all manual or thermostatic radiator valves and adjust
the lockshield valves on the remaining radiators, to give
around 20
o
C temperature drop at each radiator.
3. Adjust the room thermostat and programmer to NORMAL
settings.