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Summary of Contents for Stuart Turner Mikrofill ETHOS 70
- Page 1 B O I L E R S C O N D E N S I N G E THOS 70, 9 0, 110 & 130 WA L L M O U N T E D CO N D E N S I N G B O I L E R S T E C H N I CA L D O C U M E N TAT I O N 2 02 3 /01 R E V.
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Page 3: Table Of Contents
TA B L E O F C O N T E N T S 01. Technical Data 07. Operating Instructions Operation 02. Dimensions Controls Boiler Module 03. Safety Guidelines PCB Symbol Key Conditions Switching On the Appliance General Guidelines Switching Off the Appliance Service Information Display General Restrictions... -
Page 4: Technical Data
T E C H N I C A L DATA 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 12.4... -
Page 5: Dimensions
D I M E N S I O N S 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”... -
Page 6: Safety Guidelines
S A F E T Y G U I D E L 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 The appliance is not intended for use by persons (including children) with reduced mental, physical or sensory capabilities, or lack of experience or knowledge, unless they have been given supervision or instruction... -
Page 7: Service
S A F E T Y G U I D E L I N E S SERVICE Should you require any assistance during installation or in the unlikely event of a product failure please do not hesitate to contact our technical department on 03452 60 60 20. GENERAL RESTRICTIONS Mikrofill products should always be used, installed and maintained in accordance with the statutory requirements, specifications and standards applicable to these installations. - Page 8 D E S C R I 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. •...
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Page 9: Main Components
D E S C R I P T I O 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 Controls Housing... -
Page 10: Boiler Control
D E S C R I 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: •... -
Page 11: Delivery & Transport
D E L I V E RY & T R A N S P O RT 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
I N S TA L L AT I O N REGULATIONS The appliance should be installed by a competent installer in accordance with the applicable national and local standards, rules and regulations (please refer to pages 06 and 07 for safety guidelines). INSTALLATION AREA •... -
Page 13: Ventilation
I N S TA L L AT I O N 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)
I N S TA L L AT I O N INTERNAL CONTROLS BREAKDOWN (MAIN PCB) 01 02 03 01 02 03 04 05 01 02 04 05 06 06 07 08 09 10 03 04 ▲ FIGURE 02. TOP VIEW OF MAIN PCB. •... -
Page 15: Internal Controls Breakdown (Control Fascia)
I N S TA L L AT I O N 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 •... -
Page 16: Flue Connection
I N S TA L L AT I O N 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
I N S TA L L AT I O N FLUE GAS DATA The flue gas outlet is located on top of the appliance and is designed for direct connection to a corrosion resistant flue pipe. The flue gas discharge pipe to be used should be air tight and water tight at the joints and connections, or should be seamless. -
Page 18: Resistance Table
I N S TA L L AT I O N RESISTANCE TABLE By using either concentric or the two pipe system, different flue lengths can be achieved. In case a concentric system is used, its length should not exceed 12 metres. CONCENTRIC FLUE SYSTEM RESISTANCE SYSTEM (Pa) ETHOS 70... -
Page 19: Condense Connections
I N S TA L L AT I O N CONDENSE CONNECTIONS The boiler includes an anti syphon condense trap enabling the condense pipework to be taken directly to drain. The condense water is slightly acidic (pH 3.0 - 5.5) and should be run in a standard drain pipe material, e.g. - Page 20 I N S TA L L AT I 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) 2 0 T E C H N I CA L D O C U M E N TAT I O N...
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Page 21: Shut-Off Valves
I N S TA L L AT I O N 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
I N S TA L L AT I 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
O P E R AT I N G I N S T R U C T I O N S 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... -
Page 24: Switching On The Appliance
O P E R AT I N G I N S T R U C T I O N 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
O P E R AT I N G I N S T R U C T I O N S 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. -
Page 26: History Mode
O P E R AT I N G I N S T R U C T I O N 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
O P E R AT I N G I N S T R U C T I O N S POSSIBLE ERROR CODES continued. ERROR CODE DESCRIPTION RESOLUTION 0E33 DHW sensor open circuit. The DHW sensor is registering an open circuit. Check the connection to the sensor and replace the sensor if necessary. -
Page 28: Commissioning
C OM M I SS I O N 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 M I SS I O N I N G 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
C OM M I SS I O N 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
C OM M I SS I O N I N G CONVERSION FROM NATURAL GAS TO PROPANE For the ETHOS 70, 90, 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
C AS C A D E S E T - U P 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. •... -
Page 33: Maintenance
M A I N T E N A N C E SAFETY Maintenance should only be carried out by competent persons. Always isolate the gas supply at the gas service valve and isolate and disconnect the electrical supply prior to the removal of any components. Ensure that all external controls are isolated. -
Page 34: Gas Valve And Venturi
M A I N T E N A N C E REMOVAL OF GAS VALVE AND VENTURI • Isolate the gas and electrical supplies to the boiler. • Remove the four bolts from the elbow flange on the rear of the gas valve ( •... -
Page 35: Fan And Burner Assembly (Ethos 70)
M A I N T E N A N C E REMOVAL OF 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 A I N T E N A N C E REMOVAL OF 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. Remove the gas valve and venturi as descibed on page 34. -
Page 37: Pump / Pump Head
M A I N T E N A N C E 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. •... -
Page 38: Setting / Checking Of Electrode And Probe Gaps
M A I N T E N 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 P O N E N T L I S 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)
C OM P O N E N T L I S T CORE COMPONENTS (ETHOS 70) ▲ FIGURE 11. EXPLODED DRAWING DETAILING THE CORE COMPONENTS OF THE ETHOS 70. “(PART CODE) PART NAME”: (WHB300028) AIR INLET TUBE (WHB000020) IGNITION ELECTRODE (Ø... -
Page 41: Core Components (Ethos 90, 110 And 130)
C OM P O N E N T L I S T CORE COMPONENTS (ETHOS 90, 110 AND 130) x 06 ▲ FIGURE 12. EXPLODED DRAWING DETAILING THE CORE COMPONENTS OF THE ETHOS 90 - 130. “(PART CODE) PART NAME”: (WHB300028) AIR INLET TUBE (WHB200007) IGNITION ELECTRODE (Ø... -
Page 42: Conversion Formulae & Factors
C O N V E R S I O N F O R M U L A E & FAC T O R S 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... - Page 43 C O N V E R S I O N F O R M U L A E & FAC T O 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:...
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Page 44: Notes
N O T E S 4 4 T E C H N I CA L D O C U M E N TAT I O N... - Page 45 N O T E S T E C H N I CA L D O C U M E N TAT I O N 45...
- Page 46 N O T E S 4 6 T E C H N I CA L D O C U M E N TAT I O N...
- Page 47 ISO 9001 Registered Quality Management...
- Page 48 Mikrofill Systems Ltd. 11 Merse Road, North Moons Moat, Redditch, Worcestershire B98 9HL, UK +44 (0)3452 60 60 20 +44 (0)3452 60 60 21 www.mikrofill.com info@mikrofill.com...
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distance for 2 x boilers side by side flueing distance ethos 70
To install two Stuart Turner ETHOS 70 boilers side by side, a side clearance of 100 mm is required to meet the minimum required distance between the two flue terminals.
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