For service purposes, only original MIKROFILL spare parts should be used General conditions: All Mikrofill boilers must be installed by a competent person with regard to the relevant requirements of the Health and Safety regulations, The Building Regulations, IEE Regulations, Water Supply (Water Fittings) Regulations, Water Byelaws (Scotland), The Gas (Installation and Use) Regulations and any local planning requirements.
PH value of the condensate 4 to 5.5 15 at ? T20°C 28 at ? T25°C Available CH pump pressure Maximum supply temperature °C Working pressure CH min/max. 1 / 3 Connection pressure sanitary water min- 0.2 - 10 NOx-class Installation manual MIKROFILL ETHOS...
Page 4 INTRODUCTION This manual is intended for the installer/user of the MIKROFILL range of condensing boilers.This manual contains the necessary information relating to the installation and settings of the Ethos 30/36 and 42/46. You need to consult this manual before installation in order to ensure that you carry out all the work correctly.
3 spare burner plate nuts for fixing the burner plate (fixed on the front of the gas valve) Strainer syphon with tightening nut and packing Check the contents immediately on receipt. Any damage must be reported to the supplier immediately. Mikrofill appliances are completely assembled Installation manual MIKROFILL ETHOS...
Page 6 4.2 Siting the boiler Mikrofill appliances are suitable for all gas groups G20. The flue, whether single or concentric, must be installed in compliance with the current flue recommendations BS5440 Combination boilers should be sited as close as possible to the hot water draw off point to avoid excessive water wastage.
The dimension of the flue gas outlet pipe is 80 mm; the air inlet is similarly 80 mm. The air inlet can be placed on either the left or right hand side of the flue gas outlet pipe. Installation manual MIKROFILL ETHOS...
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The air inlet with an 80 mm diameter, must be closed with the seal supplied with it. 4.6(T) Load 500 ( Pa ) Resistance 1 = ETHOS 30/36 2 = ETHOS 42/46 Installation manual MIKROFILL ETHOS...
Air inlet and flue outlet system. The MIKROFILL boiler is a room sealed appliance that does not use any oxygen from the room in which it is installed; the casing is air tight, so that oxygen is provided only through the air inlet pipe.
Total resistance is now 94.5 Pa minus the vertical flue pipe induced draught of 3 Pa/vertical metre therefore (25 x 3 Pa = 75) = 19.5 Pa (thus below 100 Pa); so that the capacity of the boiler is not changed by the resistance. Installation manual MIKROFILL ETHOS...
In the absence of this barrier it is essential that a Mikrofill air and dirt seperator or similar appliance is installed. This is good practice even on steel/copper systems. This prevents contamination of the heat exchanger with system debris and magnetite caused by oxidation of the pipework.
For the fitting of the gas pipe and valve only, to test for gas leaks, a pressure of 100 mbar is briefly permitted. Purge the gas pipe carefully, before the appliance is used for the first time. Installation manual MIKROFILL ETHOS...
Maximum switch capacity is 2 VA. Modulating thermostat (open therm) Mikrofill has a series of modulating thermostats in its range, with which the boiler modulation can be controlled. 9-10-11 External three-way valve - 24V only. If an external three-way valve is connected for an indirect cylinder for instance, the three-way valve motor needs to be connected here;...
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If a sensor is connected, the boiler temperature can be read on the boiler display. N-L-PE The 230VAC for an external pump is connected here; in combination with the PWM signal this is connected to the terminals 1 and 2, or an internal modulating CH pump. Installation manual MIKROFILL ETHOS...
The double display shows the number of revolutions in 100 revolutions (e.g. 35 means 3500 rpm). Pressing “+” and “-“ keys simultaneously cancels setting the number of revolutions, and the appliance functions automatically. Installation manual MIKROFILL ETHOS...
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Page 18 1753 6652 1481 5522 1256 1070 In addition the appliance has a high limit safety thermostat; this is mounted on the square distribution pipe, on the right hand side of the stainless steel exchanger. Installation manual MIKROFILL ETHOS...
Explanation of the set up options for the installer: Programme number 1: Boiler type: -For the normal combi boiler, key in the digit “0” here. -if a boiler, with its own heating coil and an external three-way valve is used, programme in “3”. Installation manual MIKROFILL ETHOS...
Programme number “E”, enter this temperature (temperature chosen can be between 18°C and 85°C). Choose e.g. 75°C.and fix it by pressing the “Service” key. temperature °C Exter Installation manual MIKROFILL ETHOS...
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Programme "E” prevents this: the temperature set is not exceeded. At point “2”, the CH boiler will no longer be burning Exter temperature °C Installation manual MIKROFILL ETHOS...
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“Open Therm “ thermostat takes over the regulation of the boiler, and the capacity of the boiler is adapted to the need for heat: the boiler will modulate optimally and the room temperature will be kept very constant. Installation manual MIKROFILL ETHOS...
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* If the time clock contact is open (night reduction), an automatic night reduction of 2.5°C in the room temperature is achieved through a value programmed into the automatic burner; this can be adjusted only by means of a special programme (call Mikrofill Infodesk).
This sets the maximum central heating temperature of the boiler. 6.4 Filling and venting the boiler and installation Use the fill and drain tap in the central heating installation to fill the boiler and the installation. Installation manual MIKROFILL ETHOS...
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The pre-pressure in the gas pipe can be measured with the test nipple (3) on the gas regulator . The minimum pre-pressure which will allow the appliance to function correctly with the correct load is 10 mbar. Installation manual MIKROFILL ETHOS...
If the measurement lasts for more than 10 minutes the appliance will return to automatic operation; press the “Service” and “+” again to continue the measurement. To return to the normal menu without having to wait for 10 minutes, press the “-“ and “+” keys simultaneously. Installation manual MIKROFILL ETHOS...
Note: For adjustment, the methods under B and C approach the correct adjustment: measuring % is the preferred method. To measure emissions, the measuring point in the heat exchanger can be used by unscrewing the plastic cap. Installation manual MIKROFILL ETHOS...
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15 litres in 38 15 litres in 30 sec. sec. Appliance 30/36 42/46 ETHOS ETHOS Natural 5 litres in 5 litres in 32 sec. 20 sec. 2 litres in 2 litres in 39 sec. 31 sec. Installation manual MIKROFILL ETHOS...
Attach a suitably sized hose to the drain valve on the boiler and open drain valve. For the domestic water supply part, the inlet combination stopcock needs to be closed and a hot water tap opened. Installation manual MIKROFILL ETHOS...
Fuse F 3: 35 VAC 3.15 A; for fan Trans Fuse F4: 230 VAC 3.15 A; for mains voltage Fuse F 5: 24 VAC 1 A, for three-way valve All fuses are of type: Anti-surge Circuit board Installation manual MIKROFILL ETHOS...
Hot water much too hot 51;57 Water is drawn off, but the water from the hot tap does 51;58 not reach 60°C Boiler very noisy during HW operation 23;59 Fault after replacement of automatic burner Installation manual MIKROFILL ETHOS...
Moisture on printed circuit board of the automatic burner. Moisture in the pump wiring. Moisture on fan and/or connection. Fan plug connected incorrectly. Plug incorrectly connected. Connection cable damaged. Sensor defective. Flue gas circulation behind from the heat exchanger. Hot water drain tap leaking Installation manual MIKROFILL ETHOS...
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Incorrect parameters, or a value outside the scope of the programme, have been programmed The automatic burner carries out a frequent check on the supply voltage Mechanical defect with the Reset button with a flashing “H”; with a steady H, there is a defect in the automatic burner. Installation manual MIKROFILL ETHOS...
Check the feed-discharge pipe for blockages. Check the feed-discharge system. See 26. Take off the cold water connection from the appliance and remove and clean the through flow setting cock. Installation manual MIKROFILL ETHOS...
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Check the mains cable, the wall socket box for voltage; main fuse. Check the programmed parameters on p.18 Check the type of room thermostat, and the sticker with the indication on the terminal connection board on the appliance. Installation manual MIKROFILL ETHOS...
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(is it jammed?); loosen it. If the “H” does not flash the automatic burner needs to be replaced. Installation manual MIKROFILL ETHOS...
Dismantle the plastic air inlet box on the inlet side of the fan, inspect the fan blades. n. Check the distance between the electrode and burner; this gap needs to be 4 to 5 mm. 4 to 5 mm Burner 4 to 5 mm Installation manual MIKROFILL ETHOS...
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If this is not done evenly the fan will not run evenly and an imbalance will occur. re n. Carefully adjust the electrode, without bending the burner, until the correct gap is achieved. (see page 29) Installation manual MIKROFILL ETHOS...
Tell the user that the boiler needs to undergo inspection and maintenance every 12 months. Regular servicing is needed for the boiler to function safely. Hand over the paperwork supplied with the boiler to the user. Installation manual MIKROFILL ETHOS...
84 Pump spring 6 mm 545-2152 Vent entry 545-2022 12. GUARANTEE The Mikrofill guarantee covers only the failure of the boiler due to defective components. The guarantee does not cover faulty installation or failure to follow installation instructions including incorrect siting.
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EC DIRECTIVES relating to machines and the EC DIRECTIVES relating to EMC. Mikrofill Systems Limited West Court, Buntsford Park Road, Bromsgrove B60 3DX T: 01527 574574 F: 01527 575565 W: www.mikrofill.com e-mail: info@mikrofill.com 1202 MCB1 Installation manual MIKROFILL ETHOS...
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