Domestic Hot Water; Water Treatment - IDEAL LOGIC + Combi 24 Installation And Servicing

3 sysTEM REqUIREMENTs - (continued)

DOMEsTIC hOT WATER

1. The domestic hot water service must be in accordance with BS 5546
and BS 6700.
2. Refer to Table 1 for minimum and maximum working pressures. In
areas of low mains water pressures the domestic hot water regulator
may be removed from the DHW flow turbine cartridge. Refer to
Frame 67. The boiler will require the flow rate to be set to obtain a
temperature rise of 35
3. The boilers are suitable for connection to most types of washing
machine and dishwasher appliances.
4. When connecting to suitable showers, ensure that:
a.
The cold inlet to the boiler is fitted with an approved anti-vacuum
or syphon non-return valve.
b. Hot and cold water supplies to the shower are of equal pressure.
5. hard Water Areas
Where the water hardness exceeds 200mg/litre, it is recommended
that a proprietary scale reducing device is fitted into the boiler cold
supply within the requirements of the local water company.
IMpORTANT. Provision must be made to accomodate the expansion of
DHW contained within the appliance. If the DHW inlet contains a back
flow prevention device or non-return valve, e.g. a water meter, then a
mini expansion vessel should be fitted between the device and the boiler
in the cold inlet pipe.
Note. DHW Expansion Vessel kit available from Ideal.
5

WATER TREATMENT

CENTRAL hEATINg
The Logic + Combi 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, MBI or SENTINEL
X100 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.
12
C at the tap furthest from the boiler.
o
gENERAL
4
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
1. Set the programmer to ON.
2. Open all manual or thermostatic radiator
3. Adjust the room thermostat and programmer
DOMEsTIC hOT WATER
In hard water areas where mains water can exceed 200ppm
Total Hardness (as defined by BS 7593:2006 Table 2) a scale
reducing device should be fitted into the boiler cold supply
within the requirements of the local water company. The use of
artificially softened water, however, is not permitted.
Ideal stelrad group recommend the use of Fernox
Quantomat, Sentinel Combiguard and Calmag CalPhos I
scale reducing devices, together with Scalemaster Inline Scale
Inhibitor branded Ideal, which must be used in accordance
with the manufacturers' instructions.
For further information contact:
Fernox Manufacturing Co. Ltd
Cookson Electronics
Forsyth Road, Sheerwater, Woking, Surrey GU21 5RZ
+44 (0) 1799 521133
Sentinel Performance Solutions
The Heath Business & Technical Park
Runcorn, Cheshire WA7 4Qx
Tel: 0800 389 4670
Scalemaster Water Treatment Products
Emerald Way, Stone
Staffordshire ST15 0SR
Tel: +44 (0) 1785 811636
Calmag Ltd.
Unit 4-6, Crown Works, Bradford Road,
Sandbeds, Keighley, West Yorkshire BD20 5LN
Tel: +44 (0) 1535 210 320
Ideal Logic
sysTEM BALANCINg
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.
valves and adjust the lockshield valves on
the remaining radiators, to give around 20
temperature drop at each radiator.
to NORMAL settings.
+
Combi -
Installation and Servicing
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