Mini 3 18 to 39kW - CMS
Mini 3 18 to 39kW - CMS
Mini 3 18 to 39kW - CMS
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The Hoval <strong>Mini</strong>-3 and <strong>Mini</strong>-3H boiler can be fired using either<br />
oil or gas. With <strong>to</strong>p or rear water and flue connections there<br />
is a solution <strong>to</strong> meet your installation requirements.<br />
Dry back type flue box<br />
permits lower operating<br />
temperatures<br />
3rd pass through the<br />
Thermolytic heat<br />
exchanger with regula<strong>to</strong>rs<br />
2nd pass through baffle<br />
plate<br />
1st pass in<strong>to</strong> combustion<br />
chamber<br />
<strong>Mini</strong>-3H (rear flue) <strong>Mini</strong>-3 (<strong>to</strong>p flue)<br />
Where required TopTronic<br />
controllers can be fitted.<br />
Burner acoustic cover<br />
Double hinge door with<br />
swivel arrangement for<br />
ease of servicing (even<br />
with low NOx burners with<br />
longer blast tubes).<br />
Burners suitable for natural<br />
gas, oil and LPG firing.<br />
<strong>Mini</strong>-3 & <strong>Mini</strong>-3H heating only boilers<br />
The <strong>Mini</strong>-3 boiler with vertical flue outlet and <strong>Mini</strong>-3H boiler with horiziontal flue outlet<br />
couples high efficiency with low NOx emissions, and as such satisfies current demands<br />
for economy and environmental protection. These dual goals are achieved with<br />
the special design which incorporates the unique Hoval thermolytic heat exchanger.<br />
<strong>Mini</strong>-3 boilers are available as heating only units or with a calorifier as a combination unit,<br />
with ratings between 16 - 39 kW and DHW up <strong>to</strong> 670 litres per hour.<br />
Construction<br />
Heating only and combination boilers are constructed of high quality steel plate, with<br />
80mm thick insulation around the boiler body and 50mm thick around the flue gas collec<strong>to</strong>r<br />
and over the boiler door.<br />
All models are encased within red and orange steel panels, matching the Hoval range of<br />
boilers and calorifiers.<br />
Low temperature operation<br />
The <strong>Mini</strong>-3 boiler has a dry backed flue gas collec<strong>to</strong>r so that the boiler can safely<br />
operate with boiler flow temperatures as low as 38 o C, and return temperatures of<br />
30 o C without the risk of condensation within the boiler.<br />
Three pass design<br />
With the <strong>Mini</strong>-3 boiler the combustion gases fire <strong>to</strong> the back of the combustion chamber<br />
and then upwards through the second pass where it reverses through a baffle <strong>to</strong>wards<br />
the front of the boiler. The hot gases then flow through the thermolytic heat<br />
exchanger which is the third pass before leaving the heat exchanger through the flue<br />
box at the back.<br />
Thermolytic heat exchanger<br />
The unique thermolytic design of the third pass makes fine tuning of the flue gas<br />
temperature possible.<br />
In general, a 20K reduction in flue gas temperature will give a 1.5% gross efficiency<br />
increase.
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