Related Manuals for Mikrofill ETHOS 70
Summary of Contents for Mikrofill ETHOS 70
- Page 1 C O N D E N S I N G B O I L E R S ETHOS 70, 90, 110 & 130 WALL MO UNTED CONDENSI NG BOIL E R S TE CHNI CAL DOCUME NTATI ON IS SUE 0 3/16 Rev . 03...
-
Page 3: Table Of Contents
Ventilation Servicing Schedule Gas Connection Gas Valve and Venturi Water Connections Fan and Burner Assembly (ETHOS 70) Electrical Connections Fan and Burner Assembly (ETHOS 90, 110 and 130) Internal Controls Breakdown (Main PCB) Pump / Pump Head Internal Controls Breakdown (Control Fascia) -
Page 4: Technical Data
T EC HN I C AL D AT A GENERAL Dimensions (Height x Width x Depth) 905 x 530 x 475 905 x 530 x 675 ETHOS 70 ETHOS 90 ETHOS 110 ETHOS 130 Model Water Content of Appliance litre 10.7... -
Page 5: Dimensions
D IMEN SIONS 110 70 65 E ▲ FIGURE 01. DIMENSIONS OF THE ETHOS WALL MOUNTED BOILERS. ETHOS 70 ETHOS 90 ETHOS 110 ETHOS 130 ¾” 1¼” 1¼” 1¼” ¾” ¾” ¾” ¾” • All dimensions are in millimetres unless otherwise specified. -
Page 6: Safety Guidelines
SA FE T Y G UI D EL I N E S CONDITIONS Mikrofill Systems Ltd. shall not be liable for any damages caused by non-compliance with this manuals instructions. Only original parts must be used for service purposes. GENERAL GUIDELINES... -
Page 7: Service
D ESC RIPTIO N GENERAL The Mikrofill ETHOS wall mounted boilers are environmentally friendly gas fired heating boilers with a modulation range between approximately 10% and 100% of their maximum output. The appliances have low and CO emission, which satisfies the most stringent environmental requirements. - Page 8 DESC RI P T I O N The design of the boiler incorporates the following: • Full Operation and Fault Diagnostics via LCD. • Control / High Limit Sensors. • Integral Boiler Shunt Pump. • Integral Safety Relief. • Integral Weather Compensation (Optional External Sensor Required). •...
-
Page 9: Main Components
D ESC RIPTIO N ETHOS 70: ETHOS 90, 110 130: BOTTOM CONNECTIONS: MAIN COMPONENTS: Air Inlet Connection Gas Valve and Venturi Air Inlet Tube Grundfos UPML 25-105 130 PWM Air Vent Valve* Heat Exchanger and Burner Package Combustion Fan Ignition Transformer... -
Page 10: Boiler Control
DESC RI P T I O N BOILER CONTROL If there is a heat demand, and if all necessary conditions have been fulfilled and all safety devices are satisfied, the boiler will start. This heat requirement will arise if: • the flow temperature of the boiler is less than the required flow temperature. •... -
Page 11: Delivery & Transport
D EL I VERY & T RAN SPO R T DELIVERY The boiler is delivered fully assembled, tested and packed. • Check the boiler for damage upon receipt. • Check whether the items delivered are correct and in accordance with the items ordered. TRANSPORT The packing should only be removed after transportation. -
Page 12: Installation
MOUNTING - NON-LOAD BEARING WALLS (STUDDING OR LIGHTWEIGHT PARTITIONS) We recommend the use of a purpose designed mounting frame which is available from Mikrofill Systems Ltd. or alternatively we can supply drawings for site construction of the same. -
Page 13: Ventilation
IN ST AL LA TION VENTILATION The ventilation of the installation room should conform to current gas regulations. GAS CONNECTION The gas connection is located on the bottom of the appliance (see page 09). It should be installed by a competent installer in accordance with the applicable national standards. -
Page 14: Internal Controls Breakdown (Main Pcb)
• X13 Pin 14: Flue Gas High Limit Switch Used to either power additional pump or motorised valve. Only used on ETHOS 70 models. Only used on ETHOS 90, 110 and 130 models. 14 TEC HN ICAL DOCUM ENTA TION... -
Page 15: Internal Controls Breakdown (Control Fascia)
IN ST AL LA TION INTERNAL CONTROLS BREAKDOWN (CONTROL FASCIA) ▲ FIGURE 03. TOP VIEW OF CONTROL FASCIA. • X01 Pin 01: Control Fascia to Main PCB • X04 Pin 01: 0 - 10 V DC Input • X05 Pin 01: Alarm Output •... -
Page 16: Flue Connection
During installation, a choice can be made between a ‘room sealed’ or ‘open flued’ system. The standard two pipe (eccentric) connections can be easily converted using the Mikrofill adaptor. The flue gas discharge outlet and air intake system should be installed by a competent installer according to applicable national and local standards and specifications. -
Page 17: Flue Gas Data
• the flue system and outlet. There is a maximum over pressure of around 1.4 mbar (140 Pa) for the ETHOS 70 and 90 and 2.0 mbar (200 Pa) for the ETHOS 110 and 130 in the boiler for the flue gas discharge system. -
Page 18: Resistance Table
19.5 30.2 ▲ FIGURE 07. FLUE DISCHARGE RESISTANCE. Example of Calculation for the ETHOS 70 boiler: Concentric 45° Bend x 2 Concentric 90° Bend x 1 Concentric Pipe 80/125mm, Vertical 3m + Horizontal 1m = Total 4m Concentric Straight Pipe... -
Page 19: Condense Connections
25°K at full load). The minimum required water circulation should not be adversely affected by the use of valves, non-return valves, systems in which several boilers are connected to a common distribution pipe etc. The maximum water flow is achieved at ΔT 15°K. ETHOS 70 ETHOS 90 ETHOS 110... - Page 20 INS TAL LA TI O N UPML 25-105 130 PWM [kPa] Q [m³/h] Q [l/s] Q [m³/h] ELECTRICAL DATA: 1 x 230 V, 50 Hz SPEED Minimum 0.04 Maximum DIMENSIONAL DRAWINGS AND CONTROL BOX POSITIONS (IN MILLIMETRES) 20 TEC HN ICAL DOCUM ENTA TION...
-
Page 21: Shut-Off Valves
IN ST AL LA TION SHUT-OFF VALVES It is recommended that manual valves should be installed between the flow and return connections to the installation. VALVES (BOILERS IN CASCADE ARRANGEMENT) To prevent water flow through non-firing boilers, and hence unnecessary heat loss, a spring loaded non-return valve may be installed on the return pipework external to the boiler. -
Page 22: Water Hardness
INS TAL LA TI O N WATER HARDNESS Water hardness levels are caused by dissolved minerals in the water and will vary geographically. The harder the water, the more likely that problems with precipitation (limescale deposits) will occur, causing permanent damage to the boiler and associated equipment. -
Page 23: Boiler Module
OP ER A TING INST RU C TIONS BOILER MODULE RESET RESET DHW Selection Heating Selection Multi-Function Reset Switch DHW Temperature Heating Temperature Power Switch PCB SYMBOL KEY - OpenTherm Connection - Heating Circuit Active - Information - Summer Mode - Wireless - Pump Active RESET... -
Page 24: Switching On The Appliance
O P E RAT I NG I N ST R UC T I ON S WARNING: • The appliance should be installed by a competent installer. • These operating instructions should be closely followed. • If the cause of any fault cannot be determined, please contact the technical department. •... -
Page 25: Information Display
OP ER A TING INST RU C TIONS INFORMATION DISPLAY: RESET RESET DHW OPERATION • DHW Mode can be enabled or disabled by using the button. • The DHW setpoint can be increased or decreased by using the buttons. HEATING OPERATION •... -
Page 26: History Mode
O P E RAT I NG I N ST R UC T I ON S HISTORY MODE • To access history mode, press and hold until the display shows ‘Bu 0’. • Press the button and the display will flash ‘Hi 0’. •... -
Page 27: Possible Error Codes Continued
OP ER A TING INST RU C TIONS POSSIBLE ERROR CODES continued. ERROR CODE DESCRIPTION RESOLUTION Return temperature sensor short The return temperature sensor is registering a short circuit. Check the circuit. connection to the sensor and replace the sensor if necessary. Return temperature sensor open The return temperature sensor is registering an open circuit. -
Page 28: Commissioning
CO M M I S S I ON I N G GENERAL The commissioning should only be carried out by qualified personnel. The guarantee may be void if this is not adhered to. Before operating the appliance, the following should be done: •... -
Page 29: Maximum Load Adjustment
C OM MISS IONING MAXIMUM LOAD ADJUSTMENT Press and hold the button for three seconds until the below display appears, the boiler will then start to operate at minimum load. To adjust to maximum rate, press and hold until the below display appears, the boiler will then start to operate at maximum load. -
Page 30: Setting The Co 2 Value For The Ethos Range
CO M M I S S I ON I N G SETTING THE CO VALUE FOR THE ETHOS RANGE • Any adjustments should only be carried out by competent persons. • After adjustment of the gas valve the adjusters must be resealed. There is a setting screw on the gas valve with which the CO value can be set at maximum load. -
Page 31: Conversion From Natural Gas To Propane
After the conversion, the CO value should be set at full and minimum fire. For the ETHOS 70, 110 and 130 it is only necessary to change the CO values on the gas valve at full and minimum fire. -
Page 32: Cascade Test Mode
CA S C A DE S E T - UP CASCADE TEST MODE • Press and hold the buttons together for three seconds. • This will send a request to the master boiler to fire all slave boilers. • This can be increased to 100% by pressing the button until the display below is shown. -
Page 33: Maintenance
The frequency of maintenance will depend upon the installation condition and usage, but should still be carried out at least annually. Mikrofill Systems Ltd. does not accept liability resulting from the use of unauthorised components for the repair and maintenance of appliances not in the companies recommendations and specifications. -
Page 34: Gas Valve And Venturi
• Remove the electrical connection on the gas valve. • Remove the three bolts (ETHOS 70 - 110) or the six screws (ETHOS 130) from the venturi / fan ( • Remove the gas valve / venturi assembly from the boiler. -
Page 35: Fan And Burner Assembly (Ethos 70)
MA INT ENA NCE REMOVAL OF THE FAN AND BURNER ASSEMBLY (ETHOS 70) • Isolate the gas and electrical supplies to the boiler. • Remove the caps from the ignition electrode and ionisation probe. • Remove the gas valve and venturi as descibed on page 34. -
Page 36: Fan And Burner Assembly (Ethos 90, 110 And 130)
M AI N T EN A N C E REMOVAL OF THE FAN AND BURNER ASSEMBLY (ETHOS 90, 110 AND 130) • Isolate the gas and electrical supplies to the boiler. • Remove the caps from the ignition electrode and ionisation probe. •... -
Page 37: Pump / Pump Head
MA INT ENA NCE REMOVAL OF PUMP / PUMP HEAD • Isolate the gas and electrical supplies to the boiler. • Isolate and drain water from the boiler. • Disconnect the electrical supplies from the pump. • To completely remove the pump, unscrew the pump unions ( ) and extract the pump. -
Page 38: Setting / Checking Of Electrode And Probe Gaps
M AI N T EN A N C E SETTING / CHECKING OF IGNITION ELECTRODE AND IONISATION PROBE GAPS In addition to the annual maintenance, please ensure the following is carried out: • Isolate the gas and electrical supplies to the boiler. •... -
Page 39: Component List
C OM PON ENT L IS T Any components within the ETHOS 70 - 130 that may require replacing have been listed in this section, along with their respective part codes. If any part needs replacing which is not listed here, please contact our technical department on 03452 60 60 20 for assistance. -
Page 40: Core Components (Ethos 70)
(LONG) (WHB000013) GRUNDFOS UPML 25-105 130 OEM PUMP (WHB000200) VENTURI (ETHOS 70 - 90) * for details of individual components within this sub-assembly please contact Mikrofill Systems Ltd. on 03452 60 60 20. 40 TEC HN ICAL DOCUM ENTA TION... -
Page 41: Core Components (Ethos 90, 110 And 130)
(ETHOS 70 - 90) (WHB000013) GRUNDFOS UPML 25-105 130 OEM PUMP (WHB300012) VENTURI (ETHOS 110) (WHB400009) VENTURI (ETHOS 130) * for details of individual components within this sub-assembly please contact Mikrofill Systems Ltd. on 03452 60 60 20. TECHNICAL DOCUME NTATION 41... -
Page 42: Conversion Formulae & Factors
CO N VE RS I ON F O R M U L A E & F A CT ORS FORMULAE 20.9 - measured O measured CO x 20.9 x 11.7 = 20.9 - 20.9 11.7 11.7% CO is the maximum CO percentage that is generated by stoichiometric burning of G20 natural gas (H-gas). - Page 43 C O N V E R S I ON FORM UL A E & FA C TO R S FOR NON-CONDENSING BOILERS: 0.339 0.377 nb = 90 - + 0.008 x ΔT no = 100 - + 0.009 x ΔT FOR CONDENSING BOILERS: As a result of condensation, the efficiency at the lower value increases.
-
Page 44: Notes
NOT ES 44 TEC HN ICAL DOCUM ENTA TION... -
Page 45: Technical Docume Ntation
N OTE S TECHNICAL DOCUME NTATION 45... - Page 46 NOT ES 46 TEC HN ICAL DOCUM ENTA TION...
- Page 47 ISO 9001 Registered Quality Management...
- Page 48 Mikrofill Systems Ltd. 11 Merse Road, North Moons Moat, Redditch, Worcestershire B98 9HL , U K +44 (0)3452 60 60 20 +44 (0)3452 60 60 21 info@mikrofill.com www.mikrofill.com...
Need help?
Do you have a question about the ETHOS 70 and is the answer not in the manual?
Questions and answers