Table of Contents
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Installation, Maintenance and User Guide
NHC 25B/30B/41B
NHC 25E/30E/41E
NHC 25H/30H/41H
NHC 25EH/30EH/41EH
Read the instructions fully before installing or using the appliance.
INSTALLER, this manual is to be a xed adjacent to the boiler.
CONSUMER, retain this manual for future reference purposes.
Constant development e orts may result in minor deviations in
illustrations, functional steps and technical data without prior notice.
Pictures and drawings in the instructions can be di erent from the
appliance. All product images are provided by the manufacturer and are
for reference purposes only.
Instruction Manual
(Boiler House w/ Combi Option)
(External w/ Combi Option)
(Boiler House w/ Heat Only)
(External w/ Heat Only)
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Table of Contents
Related Manuals for Saturn NHC 25B/30B/41B
Summary of Contents for Saturn NHC 25B/30B/41B
- Page 1 Instruction Manual Installation, Maintenance and User Guide NHC 25B/30B/41B (Boiler House w/ Combi Option) NHC 25E/30E/41E (External w/ Combi Option) NHC 25H/30H/41H (Boiler House w/ Heat Only) NHC 25EH/30EH/41EH (External w/ Heat Only) Read the instructions fully before installing or using the appliance.
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Page 3: Table Of Contents
Homeowner Safety instructions Product Fiche Operation & Display Panel (OBC100) Room Thermostat (LCR-2WE) - Combi Only Vacation/Standby Mode - Combi only Heating Mode - Combi only Hot water Mode - Combi only Fault Codes Installer Design Standards Safety Flue Regulations Before Using The Boiler How To Use Safety Devices... -
Page 4: Safety Instructions
Safety Instructions Safety-related messages and instructions have been provided in this manual and on the boiler to warn you and others of a potential injury hazard. Read and follow all safety messages and instructions throughout this manual. It is very important to understand this safety section for operating, installing and servicing of the boiler. -
Page 5: Product Fiche
Product Fiche KD Navien Unit NHC 25B NHC 30B NHC 41B Space heating : temperature application Medium Medium Medium Rated heat output 24.0 27.9 36.8 Space heating : annual energy consumption Water heating : annual electricity consumption(Combi only) kWh Water heating : annual fuel consumption(Combi only) Sound power level Read the user's information and installation manual before the application is assembled,... -
Page 6: Operation & Display Panel (Obc100)
Operation and display panel (OBC100) LCD indicate the temp of heating water, the value of K-Factor, and occurrence of trouble displayed the failure code. * See page 11 for Error Code Table LCR-2WE Programmer- Combi only The LCR-2WE remote control panel will activate by pushing the power on/off button. -
Page 7: Room Thermostat (Lcr-2We) - Combi Only
Room Thermostat (LCR-2WE) - Combi only LED Lamp LCD Display Operation/Service Indicating each function and status Up/Down Adjusting Temp. Heating Heating Mode Power Room Thermostat Power ON/OFF Standby Mode Hot Water Standby Setting Mode Hot Water Mode Temperature Operation Heating Standby Indicator Mode... -
Page 8: Vacation/Standby Mode - Combi Only
Vacation/Standby Mode - Combi only If you are not at home, you can set the Standby Mode to save heating energy by pressing. Press button. will be displayed and Standby Mode will be set. To cancel vacation/standby mode press the button to return to the heating mode. -
Page 9: Heating Mode - Combi Only
Heating mode - Combi only Press the button. Set the heating temp. with / button. blinks when selecting when blinks, set the desired Boiler Temp. Mode boiler temp. between 40~80˚C by adjusting / button, after a while, it is automatically saved. Boiler temp. -
Page 10: Hot Water Mode - Combi Only
Hot Water Mode - Combi only Use this function only when hot water is needed. Press button. Set the heating temp. with button. will be displayed and Adjusting hot water temp. by Hot Water Mode will be set. 3step; Low load, Medium load, High load capacity of combustion. -
Page 11: Fault Codes
Fault Codes Fault codes take priority over all other display functions in the event of a system fault occurring and the LCD shows one of the following numeric error codes. If multiple faults occur, the corresponding fault codes are displayed alternately for about two seconds each. -
Page 12: Design Standards
INSTALLER SECTION Design Standards EMC Directive (Electromagnetic compatibility) 89/336/EC Standards: EN 61000-6-1: Electromagnetic Compatibility Generic Standard – Immunity for residential, commercial and light industrial environments. (Feb 2001) EN 61000-6-3: Electromagnetic Compatibility Generic Standard – Emission standard for residential, commercial and light industrial environments. (Feb 2001) LV Directive (Low voltage) 73/23/EEC Standard:... -
Page 13: Safety
Safety Safe use of kerosene. These fuels give off a flammable vapour when heated moderately. Vapour ignites easily, burns intensely and may cause explosion. The vapour can follow along at ground level for considerable distances from open containers and spillages collecting as an explosive mixture in drains, cellars, etc. -
Page 14: Flue Regulations
A heat protection shield should be fitted if the terminal is less than 850mm from a plastic or painted gutter or less than 450mm from painted eaves. Saturn Heating recommends as per OFTEC recommendations that the flue should be a minimum distance of 1 metre from openings so that it does not cause a nuisance and permits the dispersal of combustion products. - Page 15 Flues Regulations Clearances advised by the British Standards, provided by OFTEC, for open flues, low level balanced flues and balanced flues fitted to oil fired boilers. Minimum distances to terminals in millimetres as measured from top of the chimney or the rim of a low level discharge opening.
- Page 16 Flues Regulations - Terminating positions A to L are only permitted for appliances that have been approved for low level flue discharge when tested to OFS A100 or A101 - Terminating positions must be at least 1.8 metres distant from an oil storage tank unless a wall with at least 30 mins fire resistance and extending 300mm higher and wider than the tank is provided between the tank and the terminating position.
- Page 17 Flues Regulations N.B. Please Carefully Note: In OFTEC Book Four, 2010 page 33, 6.6.5 states that for the Republic of Ireland, “It is not permitted to install open flue appliances in domestic garages, therefore only room sealed balance flue appliances should be installed in a garage location” Definitions: Combustion Air: Air required directly by boiler oil burner for combustion process.
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Page 18: Before Using The Boiler
Before using the boiler Fuel It is essential to use only kerosene or light oil. It is better to use kerosene when the temperature can drop below -5 ˚C. Choose a fuel storage location in accordance with local regulations (See page 14 - Flue Regulations). Take care to avoid the ingress of water and/or dirt during re-filling as this can lead to f lame failure or affect the lifespan of the boiler. - Page 19 and that the low water level alarm is not activated. Notes when using Take care when positioning the boiler. Do not locate in the immediate vicinity of flammable materials. suitable measurement equipment to ensure correct combustion is taking place. Do not plug out the power supply as this will de-activate the frost protection.
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Page 20: How To Use
How to use Purging the oil supply Avoid complete emptying of the oil tank. This can lead to air being introduced to the fuel system and may result in ignition failure. Loosen the screw in the oil filter. This will allow the fuel supply line to vent. - Page 21 Reset the boiler by turning the power off and on. Close the oil pump vent, press the power button again and the boiler will ignite. If the boiler fails to fire after 3 successive attempts contact the Saturn technical helpline on 1890 929 112. Preparation and checking before start-up Ensure the system is full and at suitable operation pressures.
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Page 22: Safety Devices
Safety devices Ignition safety device When the boiler does not ignite, or if the flame falls the flame detector (photocell) will deactivate the boiler. Low water level safety device If the water level is insufficient in the boiler the low water level sensor will deactivate the boiler. -
Page 23: Everyday Checks
Everyday checks Points to be checked once or more a year Ensure that combustible materials are not stored near the boiler. Keep the area around the boiler clean and free from obstruction to allow for free air flow. Check for fuel leaks within the fuel storage/supply system and check for water leaks within and around the boiler. -
Page 24: Servicing The Boiler
Servicing The Boiler Cleaning of the boiler Soot build-up within the boiler will reduce its The boiler should be serviced annually by an approved service engineer. Cleaning the oil filter To clean the oil filter, first isolate the oil supply. Remove the oil cup by unscrewing and pulling the cup downwards. - Page 25 Cleaning the flame detector If the flame detector (photocell) becomes sooty or dirty the reduced sensitivity will cause erratic and incorrect boiler operation. Remove the flame detector (photocell) which is located at the top of the burner. Wipe the glass surface of the flame detector (photocell) using a clean rag and replace.
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Page 26: Plumbing Schematic
Plumbing Schematic Choosing of the installation place Choose an installation site that allows easy access for installation, maintenance and operation. When choosing an installation site, take care to conform to all local regulations and standards. Allow as much free space around the boiler as possible for maintenance and reduced fire hazard. -
Page 27: Sealed System
Sealed System Combi only Water Boiler Back Cold Water Inlet Hot Water Outlet Filter Reducing Valve Safety Valve Check Valve Air Exhaust Valve Hot Water Cold Water Circulation Pump Distributor Heating Coil Heating Water Outlet Fan Coil Radiator Sealed Expansion Tank Condensate Outlet Drain... -
Page 28: Flue Installation
Allowing combustion gas to re-enter the boiler room can result in a build up of carbon monoxide, which could result in poisoning. Saturn recommends the CAUTION installation of a suitable carbon monoxide detector on all installations. - Page 29 1. Condensate is produced when the condensing boiler is running and should be piped to the drainage system. 2. Link the drain hose with the outlet of the neutralization system which is located at the bottom of boiler and then connect the end of the hose to a soak pit. 3.
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Page 30: Commissioning The Boiler
Commissioning The Boiler 1. Prime the boiler with kerosene and press the power button on, ensuring there is a heat request from your time clock. The boiler then takes 3 attempts to go into ignition phase. 2. The fan will start up and purge the air through the heat exchanger - Troubleshooting if sequence missed: •... -
Page 31: Component Overview
Component Overview The structure of the boiler ModelNo: NHC 25B/30B/41B FE flue, Φ75 Controller Burner Assembly Overheat preventer Low water level sensor Temperature sensor Heat Exchanger Neutralizer assembly Return water pipe for space heating Electronic pump & Oil filter... - Page 32 Component Overview The structure of burner ModelNo: NHC 25B/30B/41B Damper Fan 3 Fan 2 Fan 1 Flame detector Fan Causing Inner tube Fan Motor Nozzle Air holder Ignition Electrode Blow tube & ame holder...
- Page 33 Component Overview The principle of the burner ModelNo: NHC 25B/30B/41B Air Flow Burner Running Mechanism 1) Fan (motor) working Oil Fluid 2) Ignition transformer is working Air Flow 3) Electronic pump is working ; oil pressure increase 4) Sensing combustion and...
- Page 34 Component Overview The structure of the heat exchanger ModelNo: NHC 25B/30B/41B Ba e plates Straight pipes H.E. for DHW Combustion chamber NHC-25H/30H/41H does not come with an in-built DHW heat exchanger. NHC-25EH/30EH/41EH does not come with an in-built DHW heat exchanger.
- Page 35 Component Overview The principle of the heat exchanger ModelNo: NHC 25B/30B/41B 200 C under Heat Fluid Counter Flow : 2 times Parallel Flow : 1 time Heat transfer Fluid Fluid Flow 75 C under Counter Flow Counter Flow Parallel Flow Figure of Heat transfer method Chamber Temp.
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Page 36: Electric Wiring Diagram
Electric wiring diagram ModelNo: NHC 25B/30B/41B... -
Page 37: Wiring - Installation Variations
Electric Wiring – Installation Variations 3 Core Wiring Diagram (Warning, without permanent supply, the frost stat is disabled) Note: Boiler temperature display will only be shown when there is a heat request through the switch live as permanent supply has not been provided. - Page 38 Electric Wiring – Installation Variations 4 Core Wiring Diagram Note: Due to the above setup using a 230v switch live, for a heat request from the boiler, an NO stepdown relay or a motorised valve is needed to connect into the low voltage heat request orange cables.
- Page 39 Electric Wiring – Installation Variations 5 Core Wiring Diagram Note: Simply join single auxiliaries from multiple MV’s and bring to the boiler in 2 core fashion. If any MV opens, the volt free auxiliary will call for a heat request.
- Page 40 Electric Wiring – Installation Variations 5 Core Wiring Diagram - Combi Only Note: Simply connect the volt free orange heat call to the back of the combi controller, and now the red cables coming from the controller, by extension, become your low voltage heat call.
- Page 41 Room thermostat (LCR-2WE) - Combi only All wiring must be in accordance with its instructions for connections with the valve controller properly and unused wire should be insulated and short-circuited. 1. Connect the cables of room thermostat properly to the terminal of valve contoller in accordance with following each colored cable;...
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Page 42: Otc Mode
If an outdoor temperature probe is connected, the weather compensation function can be used in conjunction with the weather comp' relay available at your local Saturn stockist . 1) With this function, the target primary temperature is automatically set according to the outdoor temperature (K-Factor). -
Page 43: Troubleshooting
2. Check the OTC mode is working by OTC Mode turns off during returning to Central Heating mode Hot Water activation (Press the Mode button repeatedly, until is displayed.) Please contact Saturn Technical department for any unclear matters. ※... -
Page 44: Fault Codes
Fault Codes When an error occurs, the LCD shows one of the following numeric error codes with letter ’E’ . Cause Error Code Low water level Misfire Flame failure Temp. sensor wire disconnected Short circuit of Temp. sensor Misfire in combustion High limit thermostat... -
Page 45: Product Information
28.617 29.532 35.339 Annual fuel consumption Saturn Heating Ltd, Shercock Road, Carrickmacross Contact details Co. Monaghan, Ireland (*) High-temperature regime means 60˚C return temperature at heater inlet and 80˚C feed temperature at heater outlet. (**) Low-temperature means for condensing boilers 30˚C, for low-temperature boilers 37˚C and for other heaters 50˚C return... -
Page 46: Spare Parts
Spare Parts List (Burner) - Page 47 Spare Parts List (Burner) Part No. Part Name NOTE 30007780D Harness ALL MODEL 20014282A Upper Plate NHC-25B 20005292A Upper Plate NHC-30,41B 20014294A Fixing plate NHC-25B 20005531A Fixing plate NHC-30,41B 30007195A Window Ass'y ALL MODEL 20014284A Side Cover(left) NHC-25B 20012251A Side Cover(left) NHC-30B 20012483A Side Cover(left)
- Page 48 Spare Parts List (Burner) PART CODE DESCRIPTION MODEL 20010476A OIL Nozzle NHC-25B 20010484A OIL Nozzle NHC-30B 20010506A OIL Nozzle NHC-41B 30004397A Photocell (flame detector) ALL MODEL 30005541A Motor NHC-25,30B 30005542A Motor NHC-41B 30004721C Flame Holder NHC-25B 30004727C Flame Holder NHC-30B 30004728C Flame Holder NHC-41B...
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Page 49: Specifications
SATURN CONDENSING OIL BOILER ITEM UNIT NHC 25B NHC 30B NHC 41B HEAT OUTPUT HEATING 24.0 27.9 36.8 FOR USE(Combi only) Heating FUEL Light Oil ㎡ BUILDING SIZE Less than 132 Less than 165 Less than 232 MAXIMUM WORKING PRESSURE (kPa) ㎡... -
Page 50: Warranty
CE marking 1506 In accordance with the following European Standard EN 267, EN 304, EN 15034, EN 55014-2, EN 61000-3-2, EN 61000-3-3, EN 60335-1, EN 60335-2-102 In accordance with the following Directives Directive 92/42/EEC ErP Ecodesign : Directive 2009/125/EC 813/2013 ErP Labelling : Directive 2010/30/EU 811/2013 Low voltage : Directive 2006/95/EC Electoro-magnetic Compatibility : Directive 2004/108/EC... - Page 52 Saturn Heating Technical Helpline: (IRE) 1890 929 112 Distributed exclusively by: Sales: (IRE) +353 (0)42 9692032 Saturn Heating Ltd Shercock rd. E-mail : info@saturnheating.net Carrickmacross Co. Monaghan www.saturnheating.net A81 HK09 Ireland BO-E-M-10-3...