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Summary of Contents for Riello Tregi NK Series
- Page 1 CAST IRON BOILERS INSTALLATION, USER-OPERATION, MAINTENANCE AND SYSTEM MANAGEMENT MANUAL g NK...
- Page 2 CONFORMITY boilers conform to the Efficiency Directive 92/42/EEC. When used in conjunction with a CE marked jet burner, they also satisfy the requirements of the Gas Directive 2009/142/CE and applicable sections of the Electromagnetic Compatibility Directive 2004/108/CE and Low Voltage Directive 2006/95/CE. 0694 RANGE MODEL...
- Page 3 This instruction manual contains important instructions and precautions that must be observed to ensure the trouble-free installation and efficient functioning of your rg boiler. Please accept our renewed thanks for your purchase. Riello S.p.A.
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Page 4: Table Of Contents
CONTENTS GENERAL General safety information pag. 5 Precautions “ Product description “ Control panel “ Functional wiring diagram “ Recommended burners “ Identification “ Data plate “ Technical specifications “ Accessories “ USER - SYSTEM MANAGER Start up pag. 17 Temporary shutdown “... -
Page 5: General Safety Information Pag
GENERAL SAFETY INFORMATION The boiler is delivered in a single crate. Check Periodically check that working pressure in the hea- ting circuit is over 1 bar but below the maximum limit that the appliance is complete and undamaged as soon as you receive it. Report any discrepancies or specified for the appliance. -
Page 6: Product Description
PRODUCT DESCRIPTION r g cast iron boilers are high efficiency, triple The boiler's front door can be opened completely to flue pass boilers with a horizontal combustion chamber facilitate the inspection, maintenance and cleaning of for central heating only (g N) or for central heating internal parts and to speed up servicing in general. - Page 7 g 3/100 - 4/100 NK g 5/100 ÷ 8/100 NK 1 - Control panel 9 - Storage cylinder (100 l) 2 - Automatic vent valve 10 - Boiler body 3 - Non-return valve 11 - Casing 4 - Storage cylinder pump 12 - Domestic cold water inlet 5 - Storage cylinder drain cock 13 - Magnesium anode...
- Page 8 g 3/60 - 4/60 NK 1 - Control panel 9 - Storage cylinder pump 2 - Non-return valve 10 - Boiler body 3 - Storage cylinder drain cock 11 - Casing 4 - Boiler sensor socket 12 - Domestic hot water outlet 5 - Burner 13 - Magnesium anode 6 - CH drain cock...
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Page 9: Control Panel
CONTROL PANEL 1 - Function selector II On III On IIII Automatic mode (only active with temperature control kit installed) 2 - Boiler temperature gauge Displays the temperature of the central heating water. Boiler thermostat Allows you to set the temperature of the central heating water. 4 - Electrical power indicator (green) Lights to show that the boiler is receiving electrical power. - Page 10 g NK 1 - Function selector II On III On IIII Automatic mode (only active with temperature control kit installed) 2 - Boiler temperature gauge Displays the temperature of the central heating water. Boiler thermostat Allows you to set the temperature of the central heating water. 4 - Electrical power indicator (green) Lights to show that the boiler is receiving electrical power.
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Page 11: Functional Wiring Diagram
FUNCTIONAL WIRING DIAGRAM COM.G. CO1A TA LPI NPI PE 230V~50Hz Power supply L1 PE N T1 T2 S3 B4 MB COM.G. - 4 position function selector LV - Mains power indicator LR - Burner lockout indicator TS - Safety thermostat (110°C 0/-6) (*) TR - Boiler control thermostat (33-82°C ±3) (*) FU - Mains power fuse 6.3 A-T CO1-CO1A - Multi-connectors... - Page 12 g NK COM-G. COM-E/I CO1A CO2A L1 N PE TA TA N PE 230V~50Hz Power supply COM.E/I - Summer/Winter selector COM.G. - 4 position function selector L1 PE N T1 T2 S3 S4 FU - Mains power fuse 6.3 A-T LR - Burner lockout indicator - Mains power indicator CO1-CO1A - Multi-connectors...
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Page 13: Recommended Burners
RECOMMENDED BURNERS The burners recommended to obtain the best possible performance from g boilers are: BURNER BOILER 3N / 3NK 4N / 4NK 5N /5 NK 6N / 6NK 7N / 7NK 8N / 8NK MODEL CODE GULLIVER BS1 3761112 •... -
Page 14: Identification
This is located on the boiler body and specifies the serial number, model, working pressure and rated heat input. g NK T067676GE RIELLO S.p.A. Via Ing.Pilade Riello 7 37045 Legnago (VR) - ITALY Mod. Cod. N° PAESE DI DESTINAZIONE/PAYS DE DESTINATION/BESTIMMUNGSLAND/LAND VON BESTEMMING:... -
Page 15: Technical Specifications
TECHNICAL SPECIFICATIONS MODEL DESCRIPTION Fuel gas / oil Minimum 16,3 27,2 36,0 46,1 55,0 63,0 Rated heat input Maximum 26,5 34,8 44,3 53,1 62,0 70,0 80,0 92,0 Minimum 14,9 25,0 33,0 42,3 50,0 57,6 Rated useful heat output Pn Maximum 23,9 31,5 40,2... - Page 16 MODEL DESCRIPTION 3/100 4/100 5/100 6/100 7/100 8/100 3/60 4/60 Fuel Gas / oil Minimum 16,3 27,2 36,0 46,1 55,0 63,0 16,3 27,2 Heat input at furnace Maximum 26,5 34,8 44,3 53,1 62,0 70,0 26,5 34,8 Minimum 14,9 25,0 33,0 42,3 50,0 57,6...
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Page 17: Accessories
ACCESSORIES The following accessories are available, to be ordered separately. ACCESSORY CODE Temperature control interface kit 4047331 Total shutdown control card kit 4047318 START UP Have r’s Technical Assistance Service start-up your g boiler for the first time. Once this has been done, the boiler can be left to function automatically. -
Page 18: Temporary Shutdown
- Turn the function selector to ON (II) and make sure that the green power indicator lights. The burner should now ignite and remain in operation until the set temperature is reached. If any ignition faults or malfunctions occur, the burner performs a 'LOCKOUT SHUTDOWN'. -
Page 19: Preparing For Extended Periods Of Disuse
PREPARING FOR EXTENDED PERIODS OF DISUSE If the boiler is not going to be used for an extended period of time, perform the following operations: - Turn the function selector to OFF (I) and make sure that the green power indicator goes out - Turn the system’s main power switch OFF - Close the fuel cock and heating circuit water cock - Drain the central heating circuit if there is any risk of... -
Page 20: Maintenance
MAINTENANCE Please remember that in compliance with Italian laws, THE these legal requirements and can also provide useful PERSON RESPONSIBLE FOR SYSTEM MANAGEMENT information on MAINTENANCE PROGRAMMES desig- MUST ENSURE THAT PROFESSIONALLY QUALIFIED ned to guarantee: PERSONNEL UNDERTAKE PERIODIC MAINTENANCE - greater safety AND COMBUSTION EFFICIENCY MEASUREMENTS. -
Page 21: Unpacking The Product Pag
UNPACKING THE PRODUCT r g boilers 3 ÷ 10 N, and g boilers 3 - 4 NK are delivered in a robust wooden crate and are fur- ther protected by PVC wrapping. The document bag (A) is located under the top panel of the casing and con- tains: - Instruction manual - System service booklet (only for g 3 - 4 N) -
Page 22: Overall Dimensions And Weights
OVERALL DIMENSIONS AND WEIGHTS g 3 ÷ 8 N Ø 112 g 9 - 10 N Ø 112 MODEL DESCRIPTION A - Width B - Height C - Overall depth 1095 D - Depth Net weight INSTALLER... - Page 23 g NK Ø 112 MODEL DESCRIPTION 3/100 4/100 5/100 6/100 7/100 8/100 3/60 4/60 A - Width B - Height 1470 1510 1470 C - Overall depth D - Depth Net weight INSTALLER...
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Page 24: Handling
HANDLING Once you have removed the outer packaging, proceed as follows to unpack and handle the boiler - Remove the screws fixing the boiler to the pallet. - Remove the front panel - Lift the boiler by inserting two 3/4" diameter pipes (1) through the lifting holes (2) in the boiler body. Wear suitable personal protective equipment and use suitable safety devices. -
Page 25: Place Of Installation
PLACE OF INSTALLATION g N - NK boilers from size 5 to 10 must be installed If the specific weight of the gas supply to the bur- in dedicated boiler rooms. ner is greater than the specific weight of air, install The boiler room must have adequately sized vents, and all electrical parts at least 500 mm above floor level. - Page 26 g NK boilers are designed and made for use in central heating installations and for domestic hot water production. Water fittings are as specified below: g 100 NK g 60 NK Rear view Rear view MODEL DESCRIPTION 3/100 4/100 5/100 6/100 7/100 8/100...
- Page 27 Schematic diagram - central heating - g N HEATING FLOW 1 - Boiler HEATING 2 - Central heating manifolds RETURN 3 - Disconnect valves 4 - Pumps 5 - Non-return valves 6 - Automatic vent valve 7 - Boiler safety valve 8 - Boiler drain cock 9 - System filling cock 10 - Softener filter...
- Page 28 REFERENCE VALUES The choice of system components and the method of their installation are left up to the heating engi- Electrical conductivity below 200 μs/cm (25°C) neer installing the system. Installers must use their Chlorine ions below 50 ppm expertise to ensure proper installation and functio- Sulphuric acid ions below 50 ppm ning in compliance with all applicable legislation.
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Page 29: Fitting The Casing Panels
FITTING THE CASING PANELS MODELS g 5/100 ÷ 8/100 NK - Replace the nut (5) on the flange but do not tighten - Remove the boiler body casing panels and insulation yet. from the cardboard packing. - Fix the side panels (7) to the bracket (6) and base (8) - Fit the insulation (1) around the boiler body, taking using the screws provided. - Page 30 - Fit the control panel (10) to the side panels (7) using four of the burnished self-tapping screws provided - Make sure that the side panels and control panel line up correctly, then tighten the nut (5) on the storage cylinder flange - Push the domestic hot water temperature sensor (1) into the shorter sensor holder and the TB storage...
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Page 31: Wiring
WIRING r g boilers must be connected to the terminal strip inside the control panel (see the diagram on pages 11-12). This must be done by the heating engineer or a qualified electrician. Proceed as follows to access the control panel terminal strip: - Remove the front and top panels (A) and (B). - Page 32 - Route the power cable (E) through the cable clamp (F) and fix it in place - Access the terminal strip (G). - Make the electrical connections as shown in the fol- lowing diagrams Connections to be made by the heating engineer – control panel terminal strip g NK PE TA PE TA...
- Page 33 Electrical connections to be made by the heating engineer - burner MB: Connect up the 7 pin con- nector supplied with the bur- ner. NOTE Route the burner connection cable out of the casing through the slot (1). - On completion of the electrical connections, replace all removed components in the opposite order.
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Page 34: Combustion Gas Exhaust
COMBUSTION GAS EXHAUST The flue gas exhaust and its connection to the stack must be made in compliance with applicable laws and standards, using heat resistant, condensate resistant and stress resistant rigid pipe and sealed joints. MODEL DESCRIPTION Ø - D g NK The stack must guarantee the minimum draught Uninsulated flue pipes are potentially dangerous... -
Page 35: Filling And Emptying The System
FILLING AND EMPTYING THE SYSTEM r g boilers must be fitted with a central hea- ting circuit filling system connected to the boiler return line. FILLING THE SYSTEM - Make sure that the central heating drain cock (1) and storage cylinder drain cock (2) (NK models) are closed before you start filling the system. - Page 36 EMPTYING THE SYSTEM Switch the electricity supply OFF at the system’s main switch and turn the control panel function selector to OFF (I) before starting to empty the boiler or storage cylinder. - Close the shut-off cocks for the water circuit - Connect plastic hoses (5) to the hose unions on the boiler drain cock (1) and/or storage cylinder drain cock (2) (NK models).
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Page 37: Preparing For First Start-Up Pag
PREPARING FOR FIRST START-UP It is essential to perform the following checks before star- ting up or testing the functioning of r g boiler. In particular: - Check that the fuel shut-off cock and heating system shut-off cock are open - Check that the water pressure gauge shows a pressure over 1 bar with the system cold. - Page 38 - Turn the function selector to ON (II) and make sure that the green power indicator lights. r g boiler will now start up and the burner will remain lit until the set temperature is reached If any ignition faults or malfunctions occur, the burner performs a 'LOCKOUT SHUTDOWN'.
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Page 39: Checks During And After Initial Start-Up
CHECKS DURING AND AFTER INITIAL START-UP Once the boiler has started up, make sure that it shuts down and re-starts properly when the following actions are taken: - The boiler thermostat setting is changed - The function selector is moved from position (II) to (I) and back - The room thermostat or timer setting is changed. -
Page 40: Temporary Shutdown
TEMPORARY SHUTDOWN If you are going to be away for a short period of time like a weekend or a short holiday, etc., and outdoor tempera- tures are above ZERO, proceed as follows. - Turn the function selector to OFF (I) and make sure that the green power indicator goes out - Turn the system's main power switch OFF. -
Page 41: Maintenance
MAINTENANCE Regular maintenance is a legal requirement. In Italy it is required by Presidential Decree 412 of the 26th August 1993. It is also essential for the safety, efficiency and durability of the boiler. Proper maintenance keeps con- sumption and emissions down, and ensures that the boiler continues to operate reliably over time. -
Page 42: Cleaning The Boiler
CLEANING THE BOILER Clean the boiler and remove any carbon deposits from the surfaces of the heat exchanger at least once a year. This not only extends the boiler's working life, but also keeps it efficient in terms of heat output and con- sumption. -
Page 43: Cleaning The Storage Cylinder
CLEANING THE STORAGE CYLINDER ONLY FOR g NK MODELS The storage cylinder should be serviced once a year to check the condition of the internal parts and the magne- sium anode, as well as for cleaning purposes. Perform the following operations before beginning any cleaning: - Remove the top panel (1) - Close the shut-off cocks for the domestic hot water cir-... -
Page 44: Troubleshooting
TROUBLESHOOTING CAUSE SOLUTION FAULT Check the adjustment of the Burner badly adjusted The boiler becomes dirty very burner (perform flue gas analysis) quickly Clean the flue gas pipes and Blockage in stack stack Burner air intake dirty Clean the burner air intake Boiler dirty Clean the flue gas pipes The boiler does not reach its... - Page 45 CAUSE SOLUTION FAULT Check the circuit pressure Circuit pressure too high safety valve keeps Check pressure reducer opening functioning Check pressure reducer setting Problem with heating system Check the efficiency of the expansion vessel expansion vessel ONLY FOR g NK MODELS CAUSE SOLUTION FAULT...
- Page 48 RIELLO S.p.A. 37045 Legnago (VR) Tel. 0442630111 - Fax 0442630371 - www.riello.it As part of the company’s ongoing commitment to perfecting its range of products, the appearance, dimensions, technical data, equipment and accessories may be subject to variation.
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