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2
SYSTEM REquIREMENTS - CONT'D
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 69. 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.
3
SySteM bAlAnCinG
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 11.
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.
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.
4
WAteR tReAtMent
CentRAl HeAtinG
The i-mini 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 Boilers, invalid.
Ideal Boilers, recommend Water Treatment in accordance
with the Benchmark Guidance Notes on Water Treatment in
Central Heating Systems.
If water treatment is used Ideal Boilers recommend only
the use of
SCALEMASTER GOLD 100, FERNOx, MBI, ADEY
or CALMAG GM100 inhibitors and
MC1, SENTINEL x100
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.
14
general
C at the tap furthest from the boiler.
o
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.
Cold water, rising main and pipework in exposed areas need to be
suitably lagged to prevent freezing.
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 Boilers.
2. Open all manual or thermostatic radiator valves and
adjust the lockshield valves on the remaining radiators,
to give around 20
3. Adjust the room thermostat and programmer to
NORMAL settings.
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
together with Scalemaster in-line scale inhibitor 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 Boilers, recommend the use of Fernox Quantomat, Sentinel
Combiguard and Calmag CalPhos I scale reducing devices, which
must be used in accordance with the manufacturers' instructions.
For further information contact:
Fernox Cookson Electronics
Forsyth Road, Sheerwater, Woking, Surrey GU21 5RZ
+44 (0) 8706 015000
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 3-6, Crown Works, Bradford Road,
Sandbeds, Keighley, West Yorkshire BD20 5LN
Tel: +44 (0) 1535 210320
Adey Professional Heating Solutions
Gloucester Road, Cheltenham GL51 8NR
Tel: +44 (0) 1242 546700
C temperature drop at each radiator.
o
i-mini -
Installation and Servicing
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