SPECIFICATIONS - NIKE

Wall-mounted instant boilers NIKE Mini kw Special is the ideal Immergas solution for modern building and wherever space is limited and has to be made the most of. Simple to use and easy to install, thanks also to the coupling system with depth adjustable hydraulic fittings, this boiler is the excellent solution to many installation problems. This conventional flue range of boilers produces instant domestic hot water, with outputs of 24 kw (20,640 kcal/h) and 27.9 kw (24,000 kcal/h). The NIKE Mini kw Special boiler is distinguished both for the new, higher performance hydraulic unit, on which the automatic system by-pass is located, and for the user-friendly electronics with easy-to-read controls and indications. The new microprocessor controlled electronics ensures optimum control of temperatures in room heating and in the production of domestic hot water and also offers the possibility of coupling to the exclusive Remote Control and external probe (both optional features) by means of which the boiler can be easily controlled and programmed remotely, optimising operation by way of climatic thermoregulation. The electrical insulation level of this appliance is IPX4D which means the boiler is protected against sprays of water and high humidity. 1 SPECIFICATIONS - NIKE Mini kw Special Wall-hung conventional flue boiler for central heating and instant production of domestic hot water (Appliance type B 11BS ) with a nominal heating output of 24 kw (20,640 kcal/h) and 27.9 kw (24,000 kcal/h), forced circulation. The boiler comprises: a stainless steel multigas burner with 12 (mod. 24) or 14 ramps (mod. 28), with aspirated air featuring ignition electrodes and an ionisation detection electrode, electric gas valve with double shutter and built-in modulating coil; high performance primary gas/water exchanger in copper, consisting of four pipes connected in series fitted in a lamellar battery protected by a corrosion proof alloy; combustion chamber in steel sheet insulated internally with ceramic panels; draught diverter in steel sheet with a device to protect against draught and wind and a flue control device; secondary water/water exchanger for the production of domestic hot water made in stainless steel with 14 (mod. 24) or 16 plates (mod. 28); hydraulic unit comprising a 3-way electric valve, an adjustable speed circulation pump with built-in air separator, an automatic by-pass, a system draining fitting and a cock for filling the system; d.h.w. flow switch for detecting when hot water is being drawn; 6-litre capacity system diaphragm expansion vessel (actual capacity 4.5 litres) for model 24 or 7.5-litre capacity (actual capacity 4.5) for model 28 with preload at 1.0 bar, 3-bar system safety valve and manometer; overtemperature safety thermostat; ionisation controlled electronic ignition; knob for setting central heating temperature, knob for setting domestic hot water temperature, main selector with functions (stand-by, d.h.w., central heating, Reset); setting boiler operating parameters with knobs and visual display of status and functioning mode with LEDs; self-diagnostics system with visual display of operating status and malfunctions with LEDs; control panel equipped with a microprocessor controlled p.c.b. with continuous flame modulation and a modulation range of: - NIKE Mini 24 kw from 9.3 to 24 kw (from 8,000 to 20,640 kcal/h); - NIKE Mini 28 kw from 10.5 to 27.9 kw (from 9,000 to 24,000 kcal/h); ignition delay device in the central heating mode, antifreeze protection system (as low as -5 C), circulator antiblock function and three-way valve, system post-circulation function, chimneysweep function, circulator mode selection; designed for connecting the Immergas Remote Control, Timer/ Room Thermostat, Room Thermostat, External Probe and Electronic Control Unit for systems in zones; IPX4D electrical insulation level. (optional) connecting group with depth adjustable fittings, gas cut off cock and filling valve. Supplied with bottom protection cap. II 2H3+ category appliance running on Natural Gas or LPG. With CE mark. The following models are available: NIKE Mini 24 kw Special cod. 3.018871 NIKE Mini 28 kw Special cod. 3.018921 1

2 MAIN COMPONENTS - NIKE Mini 24 kw Special 90 gas cock axis - wall dimension = 90 mm LEGEND: 1 - Burner 2 - D.h.w. flow switch 3 - Gas valve 4 - Filling valve 5 - Flue safety thermostat 6 - Flue hood 7 - Flow probe 8 - Safety thermostat 9 - System expansion vessel 10 - Combustion chamber 11 - Boiler pump 12-3-bar safety valve 13 - Automatic by-pass 14-3-way valve (motorized) 15 - Draining valve 16 - Primary heat exchanger 17 - Ignition and detection electrodes 18 - Automatic vent valve 19 - D.h.w. heat exchanger 2

2.1 MAIN COMPONENTS - NIKE Mini 28 kw Special 90 gas cock axis - wall dimension = 150 mm LEGEND: 1 - Burner 2 - D.h.w. flow switch 3 - Gas valve 4 - Filling valve 5 - Flue safety thermostat 6 - Flue hood 7 - Flow probe 8 - Safety thermostat 9 - System expansion vessel 10 - Combustion chamber 11 - Boiler pump 12-3-bar safety valve 13 - Automatic by-pass 14-3-way valve (motorized) 15 - Draining valve 16 - Primary heat exchanger 17 - Ignition and detection electrodes 18 - Automatic vent valve 19 - D.h.w. heat exchanger 3

3 MAIN DIMENSIONS - NIKE Mini 24 kw Special Model Height (mm) Width (mm) Depth (mm) Flue Ø (mm) NIKE Mini 24 kw Special 770 450 250 130 3.1 CONNECTIONS Note: Coupling system (OPTIONAL) Model NIKE Mini 24 kw Special Flow M 3/4" Return R 3/4" Hot outlet AC 1/2" Cold inlet AF 1/2" Gas G 3/4" Expansion vessel Litres 6 (real 4.5) 4

4 MAIN DIMENSIONS - NIKE Mini 28 kw Special Model Height (mm) Width (mm) Depth (mm) Flue Ø (mm) NIKE Mini 28 kw 770 450 310 130 4.1 CONNECTIONS Note: Coupling system (OPTIONAL) Model NIKE Mini 28 kw Special Flow M 3/4" Return R 3/4" Hot outlet AC 1/2" Cold inlet AF 1/2" Gas G 3/4" Expansion vessel Litres 7.5 (real 4.5) 5

5 PUMP HEAD AND FLOW RATE GRAPH The "NIKE Mini kw Special" boilers are supplied with the pump incorporated. The circulation pump is already fitted with a condenser.the graph shows the system s available head (with automatic by-pass) which depends on the flow rate. To optimize boiler operation, the circulation pump in new systems (single-pipe and module) should be used at top speed. 5.1 PUMP - NIKE Mini 24 kw Special WILO OTSL 15/5-3 A B Flow rate l/h 5.2 PUMP - NIKE Mini 28 kw Special WILO OTSL 15/6.7-3 Head (kpa) Head (m H 2 O) Head (kpa) Head (m H 2 O) A B Flow rate l/h A = Head available to the system at third speed (with automatic by-pass). B = Head available to the system at second speed (with automatic by-pass). 6

6 WIRING DIAGRAM - NIKE Mini 24-28 kw AMBIENT THERMOSTAT OR REMOTE CONTROL The boiler is pre-engineered for installation of the Amico Remote Control (CAR), which must be connected to terminals 42 and 43 in compliance with the polarity and eliminating jumper X40. The boiler is pre-engineered for installation of the room thermostat (S20), programmable On/Off thermostat, programmable timer or a Digital Remote Control (CRD), which must be connected to terminals 40-41 and remove the jumper X40. The external probe (B4) must be connected to terminals 38 and 39 on the integrated electronic board. LEGEND: A5 - CAR interface board B1 - Flow probe B4 - External probe (optional) CAR - Comando Amico Remoto remote control (optional) CRD - Digital remote control (optional) E1 - Ignition electrodes E2 - Detection electrode E4 - Safety thermostat E6 - Flue thermostat F1 - Neutral fuse F2 - Line fuse M1 - Boiler pump M30-3-way valve R5 - D.h.w. temperature trimmer R6 - Heating temperature trimmer R10 - Main switch S4 - D.h.w. flow switch S8 - Gas type selector S20 - Room thermostat (optional) T2 - Ignition transformer X40 - Room thermostat jumper Y1 - Gas valve Y2 - Gas valve modulator 7

7 HYDRAULIC LAYOUT - NIKE Mini 24-28 kw Special LEGEND: 1 - D.h.w. flow switch 2 - Flow limiter 3 - Filling valve 4 - Gas valve 5 - Burner 6 - Primary heat exchanger 7 - Flue hood 8 - Flue safety thermostat 9 - Flow probe 10 - Safety thermostat 11 - System expansion vessel 12 - Automatic vent valve 13 - Boiler pump 14 - D.h.w. heat exchanger 15-3-way valve (motorized) 16 - Automatic by-pass 17 - Draining valve 18-3-bar safety valve 8

8 TECHNICAL SPECIFICATIONS - Mini 24-28 kw Special NIKE 24 NIKE 28 Maximum nominal heat input kw (kcal/h) 26.7 (22,933) 30.9 (26,571) Maximum nominal heat output kw (kcal/h) 24.0 (20,640) 27.9 (24,000) Minimum nominal heat input kw (kcal/h) 10.8 (9,322) 12.0 (10,356) Minimum nominal heat output kw (kcal/h) 9.3 (8,000) 10.5 (9,000) Efficiency at 100% Pn % 90.0 90.3 Efficiency at 30% % 89.2 89.3 Central Heating circuit C.H. temperature adjustment C 38-85 38-85 C.H. max temperature C 90 90 C.H. max pressure bar 3 3 Nom. / (real) system expansion vessel capacity litres 6 / (4.5) 7.5 / (4.5) Expansion vessel preload pressure bar 1.0 1.0 Available pump head with flow 1000 l/h kpa (m H 2 O) 23.7 (2.42) 25.9 (2.64) Domestic Hot Water circuit D.H.W. nominal heat output kw (kcal/h) 24.0 (20,640) 27.9 (24,000) D.H.W. temperature adjustment C 30-60 30-60 Minimum D.H.W. pressure bar 0.3 0.3 Maximum D.H.W. circuit pressure bar 10 10 Minimum D.H.W. demand litres/min 1.5 1.5 Continuous max D.H.W. production ( t 30 C) litres/min 11.4 13.2 Gas supply NATURAL GAS (G20) MIN - MAX mbar 2.10-11.90 2.00-12.00 nozzles n - ø mm 12 x 1.30 14 x 1.30 LPG (G30) MIN - MAX mbar 4.70-27.80 4.10-27.70 nozzles n - ø mm 12 x 0.78 14 x 0.78 LPG (G31) MIN - MAX mbar 6.30-35.50 5.60-35.90 nozzles n - ø mm 12 x 0.78 14 x 0.78 Supply voltage V/Hz 230-50 230-50 Nominal power absorption A 0.41 0.44 Installed electric power W 90 100 Power absorbed by pump W 73.2 77.4 Electric insulation degree IP X4D X4D Boiler water content litres 2.7 2.9 Empty boiler weight kg 30 31 9

9 COMBUSTION SPECIFICATIONS - NIKE Mini 24 kw Special Nat. gas (G20) LPG (G30) LPG (G31) 100% Pn combustion efficiency % 92.7 92.7 92.7 P min combustion efficiency % 89.0 89.0 89.0 Stack losses with burner on (100% Pn) % 7.3 7.3 7.3 Stack losses with burner on (P min) % 11.0 11.0 11.0 Stack losses with burner off % 0.59 0.59 0.59 Outer casing losses with burner off % 0.84 0.84 0.84 Outer casing losses with burner on (100% Pn) % 2.7 2.7 2.7 Outer casing losses with burner on (P min) % 3.2 3.2 3.2 Exhaust flue temp. at Max. nominal heat input C 111 116 112 Exhaust flue temp. at Min. nominal heat input C 82 85 84 Fumes flow rate at Max. nominal heat input kg/h 67 65 68 Fumes flow rate at Min. nominal heat input kg/h 60 58 59 CO 2 at Maximum Heat Input % 5.60 6.70 6.40 CO 2 at Minimum Heat Input % 2.44 2.92 2.87 CO at Maximum Heat Input mg/kwh 81 124 63 CO at Minimum Heat Input mg/kwh 36 40 40 NO x at Maximum Heat Input mg/kwh 245 349 325 NO x at Minimum Heat Input mg/kwh 138 161 155 Weighted CO mg/kwh 21 - - Weighted NO x mg/kwh 146 - - NO x category - 3 3 3 Boiler fumes circuit resistance Pa 1.3 1.3 1.3 Clear draught switch area m 2 0.0226 0.0226 0.0226 Draught switch localized loss coefficient 28.9 28.9 28.9 The gas flow rates refer to the NHV at 15 C and with 1013 mbar pressure. The fumes temperature values refer to a 15 C inlet air temperature. 10

9.1 COMBUSTION SPECIFICATIONS - NIKE Mini 28 kw Special Nat. gas (G20) LPG (G30) LPG (G31) 100% Pn combustion efficiency % 93.9 93.9 93.9 P min combustion efficiency % 90.2 90.2 90.2 Stack losses with burner on (100% Pn) % 6.1 6.1 6.1 Stack losses with burner on (P min) % 9.8 9.8 9.8 Stack losses with burner off % 0.24 0.24 0.24 Outer casing losses with burner off % 1.07 1.07 1.07 Outer casing losses with burner on (100% Pn) % 3.6 3.6 3.6 Outer casing losses with burner on (P min) % 3.0 3.0 3.0 Exhaust flue temp. at Max. nominal heat input C 100 106 103 Exhaust flue temp. at Min. nominal heat input C 78 79 79 Fumes flow rate at Max. nominal heat input kg/h 73 70 72 Fumes flow rate at Min. nominal heat input kg/h 63 63 62 CO 2 at Maximum Heat Input % 6.00 7.30 7.00 CO 2 at Minimum Heat Input % 2.56 3.00 3.00 CO at Maximum Heat Input mg/kwh 67 108 75 CO at Minimum Heat Input mg/kwh 34 43 39 NO x at Maximum Heat Input mg/kwh 617 242 747 NO x at Minimum Heat Input mg/kwh 388 179 222 Weighted CO mg/kwh 43 - - Weighted NO x mg/kwh 125 - - NO x category - 3 3 3 Boiler fumes circuit resistance Pa 1.3 1.3 1.3 Clear draught switch area m 2 0.0283 0.0283 0.0283 Draught switch localized loss coefficient 35.9 35.9 35.9 The gas flow rates refer to the NHV at 15 C and with 1013 mbar pressure. The fumes temperature values refer to a 15 C inlet air temperature. 11

10 OptionalS NIKE Mini kw Special Comando Amico Remoto remote control code 3.011236 Digital Remote Control code 3.016362 Weekly digital chrono-thermostat code 3.014438 Radio-chrono-thermostat (wireless) code 3.014439 External probe code 3.014083 Remote control code 3.013305 Connections set kit (only for NIKE Mini 24 Special) code 3.015229 Connections set kit (only for NIKE Mini 28 Special) code 3.016671 Control unit kit for zone-based systems code 3.011668 Universal connection ki code 3.011667 GSM remote control kit code 3.017182 Polyphosphate dispenser kit code 3.016305 On-off valve kit code 3.4297 Boiler anti-theft kit (mechanical) code 3.016283 The boiler can be coupled to the DIM (Multi-system Distribution Manifold) available in 5 recessed kits. 12

APPENDIX 11 comando amico remoto REMOTE CONTROL (optional) The Comando Amico Remoto remote control allows the user to manage, control and program boiler operation from a distance. It has been designed to guarantee ideal temperature conditions at any moment of the day and night for each individual day of the week. The main characteristics which make the Immergas Comando Amico Remoto remote control stand out are the simplicity and clarity of the controls and the ease of connection to the boiler control panel. Using only two cables, it receives electrical power and sends regulation and control commands. 11.1 FEATURES Connection to the boiler takes place with 2 cables (min. section 0.50 mm 2 and max. 2.5 mm 2 ) with maximum length of 50 metres. The Comando Amico Remoto remote control is divided into two completely independent sectors: TEMPERATURE REGULATION AND BOILER OPE- RATIONAL MODE SECTOR. Possibility of operation in anti-freeze position: with the selector in the 0 position, the remote control controls the ignition of the boiler only when the room temperature goes under +5 C The display shows OFF, if the room probe has not been disabled. Summer position: the regulator enables the domestic hot water function. The hot water temperature regulation is carried out using the appropriate knob. The display shows the value during regulation. Winter position: the regulator enables the operation of both the domestic hot water circuit and the heating circuit. The specific knobs allow the user to select the required temperatures. The display shows the value during regulation. TIME PERIOD AND ROOM TEMPERATURE PRO- GRAMMING SECTOR. Manual operation: operating range between 5 C and 30 C. Automatic operation: 2 different levels of room temperature (comfort and reduced) managed within the day and the week. Automatic operation with pre-set program: the Comando Amico Remoto remote control contains a "standard" weekly programmer which is already memorised. Diagnostics: the Comando Amico Remoto remote control continuously controls the boiler operational status and highlights any anomalies, showing the corresponding error code on the display. On the display, it is possible to visualise: the flow temperature, the set room temperature and the external temperature (if the external probe is connected). Additional functions: the Comando Amico Remoto remote control is capable of excluding the internal room temperature probe. The Comando Amico Remoto remote control can operate with ON-OFF or Modulating regulation. The appliance is supplied with the modulating operation setting which can be excluded by switching to ON-OFF mode. Boiler with external probe: the boiler P.CB. is capable of supporting an external probe. Rotating the heating adjustment selector, it is possible to set the relationship between the external temperature and the temperature of the heating water according to 9 pre-set curves. The display shows a number between 0 and 9 relative to the curve selected. 13

12 comando amico remoto REMOTE CONTROL - dimensions 12.1 TECHNICAL DATA Connection to the boiler via two-wire cable (to be connected following polarity sequence) Remote control unit connection available as standard Graphic display :... LCD Dimensions (mm) :... 128 x 82 x 31 Correct operational range for room probe:... +0 / +40 C Reduced temperature adjustment range :... +5 C / +25 C Comfort temperature adjustment range :... +5 C / +30 C Room anti-freeze intervention temperature :... +5 C Room anti-freeze intervention end temperature :... +5.6 C Boiler temperature thermostat intervention temperature ON (modulating) :... set point Boiler temperature thermostat intervention temperature OFF (modulating) :... set point +0.6 C Boiler temperature thermostat intervention temperature ON (On - Off) :... set point Boiler temperature thermostat intervention temperature OFF (On - Off) :... set point +0.3 C Resolution visualised :... 0.1 C Clock programmer charge reserve time :... 8 hours Timer programming resolution :... 30 minutes Maximum number of ignitions and switch-offs per day :... 48 Number of standard programs inserted :... 1 14

13 EXTERNAL PROBE (optional) The electrical connection of the EXTERNAL PROBE must take place at terminals 38-39 on the boiler P.C.B. Attention: The external probe CANNOT be combined with the Digital Remote Control. 13.1 EXTERNAL PROBE ADJUSTMENT FUNCTIONS TM-MAX/MIN = Flow temp. range selected. Te = External temperature. 15

14 DIGITAL REMOTE CONTROL (optional) The Digital Remote Control allows the user to manage, control and program boiler operation from a distance. It has been designed to guarantee ideal temperature conditions at any moment of the day and night for each individual day of the week. The main characteristics which make the Immergas Digital Remote Control stand out are the simplicity and clarity of the controls and the ease of connection to the boiler control panel. Using only two cables, it receives electrical power and sends regulation and control commands. 14.1 FEATURES Connection to the boiler takes place with 2 cables (min. section 0.50 mm 2 and max. 2.5 mm 2 ) with maximum length of 50 metres even without the need to respect polarity. The Digital Remote Control allows the user to regulate the temperature in the domestic hot water and heating phases and to select the boiler operation modes. Operation in anti-freeze position: with the selector in the Stand-by position, the remote control controls the ignition of the boiler only when the room temperature goes under +5 C. Summer position: the regulator enables the domestic hot water function. The hot water temperature regulation is carried out using the appropriate keys. The display shows the value during regulation. Winter position: the regulator enables the operation of both the domestic hot water circuit and the heating circuit. The regulation of the relative temperatures (domestic hot water and heating) is carried out using the appropriate keys. The display shows the value during regulation. Manual operation: operates in range of between 5 C and 30 C. Automatic operation: 2 different levels of room temperature (comfort and reduced) managed over the day and the week. Automatic operation with pre-set program: the Digital Remote Control contains a "standard" weekly programmer which is already memorised. Diagnostics: the Digital Remote Control continuously controls the boiler operational status and highlights any anomalies, showing the corresponding error code on the display. Display messages: on the Digital Remote Control display, it is possible to visualise: the flow temperature, the set room temperature. In addition, using the appropriate key, it is possible to access further information regarding the boiler opertional status. Additional functions: The Digital Remote Control has a special menu reserved for the technician inside which it is possible to set various parameters, the main ones including: - possibility to exclude the internal room temperature probe. - possibility to operate with ON-OFF or Modulating regulation. The appliance is supplied with the setting for modulating operation which can be excluded by switching to ON-OFF mode. - possibility to operate with a self-learning system which allows the user to reduce oscillation in room temperature (in time) to a minimum. - possibility to operate with a system which takes in to account the dimensions and inactivity of the heating system in order to optimise the speed at which the system arrives at the correct temperature. 16

15 DIGITAL REMOTE CONTROL - dimensions 15.1 TECHNICAL DATA Power supply...using communication bus Absorbed power:...200 mw Room temperature:...0-40 C Warehouse temperature:... -10 - +65 C Protection class according to EN 60730:... II Protection class according to EN 60529:... IP 20 Casing dimensions (LxHxD):... 110 x 73 x 25 Connection technique:...2 non-polarised wires Charge reserve time:... 24 hours (with at least 2 charging hours) Max. length of connection cable:... 50 m (with cable 2x0.75mm 2 ) Room temperature indication precision:... +/- 1 C to 25 C NTC room temperature sensor:...50 k to 25 C Clock indication deviation... +/- 15 minutes / year 15.2 FACTORY SETTINGS On ignition:... Stand-by Domestic hot water set:... 50 C Winter status:... Manual Comfort room temperature... 20 C Reduced room temperature... 16 C RISL... 85.0 C ANTIG... 5.0 C AMBCR... 0.0 C AMBON... 1 MODUL... 1 ITALN... 1 K REG... 3.0 DIMEN... 5.0 AUTOA... 1 17

During the operating life of the products, performance is influenced by external factors, e.g. domestic water hardness, atmospheric agents, deposits in the system and so on. The data declared refers to products which have been correctly installed and used, in conformity with current regulations. N.B.: it is advisable to have correct maintenance carried out periodically. Immergas reserves the right to make all modifications to the models considered necessary for product development without prior notice. product.code S.0089 rev. 000-01/2008 - Technical Documentation Office - Immergas Marketing Office 42041 Brescello (RE) Italy - Tel. 0522.689011 - Fax 0522.689102 www.immergas.com