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Summary of Contents for Strebel S-FX 70
- Page 1 STREBEL S-FX Boiler Range Models 70 - 125 - 220 - 320 Floor Standing High Efficiency Condensing Boiler Installation, Operating & Maintenance Manual Please read and understand before commencing installation and leave the manual with the customer for future reference.
- Page 2 CONFORMITY The S-FX appliances comply with the following: • Ecodesign directive 2009/125/CE • NOx Class 6 (< 56 mg/kWh) • "Condensing" classification For the serial number and year of manufacturer, refer to the technical data plate. Company Management The appliance must be installed by qualified personnel in conformity with current Technical Standards and national and/or local legislation.
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Page 3: Table Of Contents
FLUE CONNECTION ..............................16 FLUE TERMINAL POSITIONING ........................... 17 CONDENSATE DRAIN CONNECTION .......................... 17 MAIN WIRING DIAGRAMS ............................18 - S-FX 70 ..................................18 - S-FX 125 ..................................19 - S-FX 220 & 320 ................................20 ELECTRICAL CONNECTIONS ............................21 SCHEMATIC &... -
Page 4: Safety Warnings And Regulations
SAFETY WARNINGS AND REGULATIONS • After unpacking the appliance, ensure that all parts are intact and complete as per the supply specifications, and if any non-conformities are found, contact the representative that sold the appliance. • The appliance must be installed by professionally qualified personnel, in conformity with current national and local standards and the instructions in the manual supplied with the product. -
Page 5: Description
DESCRIPTION The heating units in the range S-FX are condensing heat generators, designed to heat rooms, and in combination with a storage tank, for the production of hot water. They comprise: - A stainless steel heat exchanger, with high water content and generously sized exchange surface to optimise energy efficiency and heating output. -
Page 6: Dimensions & Fittings
Dimensions & Fittings S-FX 70 Model S-FX 125 Model... - Page 7 S-FX 220 Model S-FX 320 Model Model S-FX 70 S-FX 125 S-FX 220 S-FX 320 1” 1/4 1” 1/4 1 Central Heating Flow Connection DN 65 2 Central Heating Low Temperature Return Connection (Bottom) 1” 1/4 1” 1/4 DN 65 3.
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Page 8: Technical Specifications
TECHNICAL SPECIFICATIONS Model Efficiency & Performance Max Heat Input 65.5 Min Heat Input Maximum Heat Output (80/60) 64.4 294.5 Minimum Heat Output (80/60) 13.7 22.5 40.2 60.8 Maximum Heat Output (50/30) 69.9 123.9 319.3 Minimum Heat Output (50/30) 24.8 44.2 66.8 Efficiency at Pmax (80/60) 98.3... -
Page 9: Erp Datasheet
ErP SPECIFICATION DATA SHEET ERP Specification Datasheet Technical Parameters according to the European ERP (Energy Related Product) legislation. S-FX 70 S-FX 125 S-FX 220 S-FX 320 Model(s): Symbol U.M. Condensing Boiler: Low-temperature Boiler: B1 Boiler: Cogeneration Space Heater: Combination Heater:... -
Page 10: System Pump
Select a pump that is compatible with the hydraulic resistance of the heating unit and system. The graph shows the pressure drop curves of the heating units. It is recommended to observe the water flow rates in the table and as specified below. DESCRIPTION S-FX 70 S-FX 125 S-FX 220 S-FX 320 Water flow rate ΔT 10... -
Page 11: Control Panel
CONTROL PANEL Context Button 1. Context Button 2. Context Button 3. LCD Display. Up Navigation Arrow. Confirmation / Reset Button. Down Navigation Arrow. Auto / Manual Heating / DHW. Summer / Winter Mode. Economy / Comfort Mode. Menu Exit Button. Main Menu Button. -
Page 12: Installation Room
Protect F1 = Inhibitor Please refer to the ICOM "Water Treatment and Conditioning of Commercial Heating Systems Guide" available to download from our website www.strebel.co.uk WARNING REPAIRS AND PARTS REPLACED DUE TO THE FORMATION OF SCALE ARE NOT COVERED BY THE WARRANTY. -
Page 13: Gas Connection
The last section is a stainless steel hose with an isolation valve fitted – gas pipe example above. • The last section of gas pipe work has breakable unions with an isolation valve fitted. S-FX S-FX 70 S-FX 125 S-FX 220 S-FX 320 Gas Supply Connection Size ¾"... -
Page 14: Flow & Return Connections
FLOW & RETURN CONNECTIONS The following section specifies the requirements of the heating unit hydraulic fittings. S-FX S-FX 70 S-FX 125 S-FX 220 S-FX 320 Flow Connection Size 1 ¼" Threaded 1 ¼" Threaded 2" Threaded DN65 Flanged Primary Return Connection Size 1 ¼"... - Page 15 WARNING • If the secondary return connection is not used then this must be blanked off by the installer. Each hydraulic connection has a premade pocket for the flow & return sensors to be inserted shown in the below diagram: •...
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Page 16: Flue Connection
FLUE CONNECTION The S-FX boiler range is a B23 type with combustion air drawn from the installation room and the exhaust fumes by the means of a fan. • S-FX appliances are equipped with an exhaust flue gas sensor, which in the event of irregular temperatures will close down the operation of the boiler. -
Page 17: Flue Terminal Positioning
Please refer to the relevant British Standards: • BS5440-2 – Flueing and ventilation for gas appliances of rated input not exceeding 70kW (S-FX 70 Only). • BS6644 – Installation of gas fired hot water boilers of rated inputs between 70kW – 1.8MW. -
Page 18: Main Wiring Diagrams
MAIN WIRING DIAGRAMS S-FX 70... -
Page 19: S-Fx 125
S-FX 125... -
Page 20: S-Fx 220 & 320
S-FX 220 & 320... -
Page 21: Electrical Connections
ELECTRICAL CONNECTIONS The electrical terminal block is located in the rear of the control panel. The S-FX boiler is prewired and provided with a Y-cable and plug for connection to the electrical supply. The connection to the mains power supply must be made with a permanent connection and equipped with a bipolar switch whose contacts have a minimum opening of at least 3mm, interposing fuses of max 3A between the boiler and the mains supply panel. -
Page 22: Schematic & Wiring Examples
SCHEMATIC AND WIRING EXAMPLES 2 x Direct Heating Circuits... -
Page 23: Direct Heating Circuit And 1 X Dhw Primary Circuit With A Circulation Pump
1 x Direct Heating Circuit and 1 x DHW Primary Circuit with a Circulating Pump... -
Page 24: Direct Heating Circuit And 1 X Dhw Primary Circuit With A Three Way Valve
1 x Direct Heating Circuit and 1 x DHW Primary Circuit with a Three Way Dirverting Valve... -
Page 25: Remote On/Off Control, Remote Reset And Bms Outputs
Remote On / Off Control, Remote Reset and BMS Output Wiring... -
Page 26: User Menu Structure
USER MENU STRUCTURE... - Page 27 From the main home screen, press the main menu button (Button Number 12): Access the "user" menu by pressing the context button number 1. Then use the up and down arrows to scroll through various user menus as shown in the below table:...
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Page 33: Gas Conversion From Natural Gas & Lpg
User Menu, press ok. Scroll to the "Maintenance" chapter, press ok. iii) Scroll to the "Test Mode" chapter, press ok. Scroll to the "Gas Type Selection" chapter, press ok. Select LPG, press ok. S-FX 70 S-FX 125 S-FX 220 S-FX 320... -
Page 34: First Time Start Up
FIRST TIME START UP WARNING The S-FX boiler is factory set to operate with G20. Before starting the appliance, check that the gas supply is the one the boiler is designed to operate with. Following this, ensure that: • All fuel shut-off valves and water valves are open. •... -
Page 35: Maintenance
MAINTENANCE Annual maintenance is a compulsory requirment and isessential to ensure optimal safety, perfromance and lifetime of the appliance. Internal cleaning of the appliance and removal of combustion residue from the exchanger surfaces are required at least once a year. The following is required: Heat exchanger inspection and cleaning with suitable products if dirty and blocked. -
Page 36: Troubleshooting
6. To close, tighten down the burner door, 7.Repeat the previous steps in reverse order. 8.Complete a gas tightnes test. TROUBLESHOOTING The S-FX boiler is equipped with an advanced self diagnosis system. In the case of a boiler fault, the display will light up indicating the fault code. -
Page 37: List Of Fault Codes
LIST OF FAULT CODES... - Page 38 Further information on our complete product range is available from our website. STREBEL LTD RESERVE THE RIGHT TO CHANGE ANY SPECIFICATIONS ON THIS BOILER RANGE WITHOUT NOTICE CAST IRON – CONDENSING – WATER HEATERS – RENEWABLES FLUES – ACCESSORIES.
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