Table of Contents
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5.24 and 5.32 N3V
CONDENSING GAS – FIRED
WALL MOUNTED
STAINLESS STEEL BOILER
Heating only or with external tank
and Solar System
INSTRUCTIONS FOR INSTALLATION
OPERATING AND MAINTENANCE
AUSTRALIAN VERSION
For Sales and Service contact;
AGENT
Automatic Heating Pty Ltd
51 Assembly Drive, PO Box 356
Tullamarine Vic 3043 Australia
Telephone: +61 3 9330 3300 Facsimile +61 3 8318 7319
Email: sales@automaticheating.com.au | www.automaticheating.com.au
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Table of Contents
Summary of Contents for Meridian 5.24
- Page 1 5.24 and 5.32 N3V CONDENSING GAS – FIRED WALL MOUNTED STAINLESS STEEL BOILER Heating only or with external tank and Solar System INSTRUCTIONS FOR INSTALLATION OPERATING AND MAINTENANCE AUSTRALIAN VERSION For Sales and Service contact; AGENT Automatic Heating Pty Ltd...
- Page 2 WARNING Before filling the heating system , new or existing, is necessary to check that it will be clean and there will be not impurity and/or residual and then let in a suitable inhibitor...
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Page 3: Table Of Contents
INDEX INDEX..........................3 BOILER DIAGRAM AND LEGEND CONENSA 5.24 e 5.32 N3V ........5 CHARACTERISTICS, DIMENSIONS AND TEMPLATES ..........6 1 USER INSTRUCTIONS ....................7 1.1 General warnings....................... 7 1.2 First start-up......................8 1.3 Signals and diagnostics ................... 10 1.5 Operating of the solar system .................. - Page 4 3 SERVICING INSTRUCTIONS ..................34 3.1 First start-up tests....................34 3.2 Settings (stand alone settings) ................34 3.3 Gas pressure regulation..................37 3.5 Boiler diagnostic ...................... 40 3.6 Maintenance function ....................40 3.7 Adjustment of nominal heating power..............40 3.9 Selection of flow temperature in heating mode.
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Page 5: Boiler Diagram And Legend Conensa 5.24 E 5.32 N3V
BOILER DIAGRAM AND LEGEND MERIDIAN 5.24 e 5.32 N3V 1)Flue /air outlet ducts 2)Air combustion duct 3)Manual vent tap 4) Burner 5)Ionisation electrode 6)Expansion vessel 7)Safety thermostat 8)Flow temperature sensor 9)Fan 10)Differential pressure switch 11)Circulator 12)Three way valve 13)attack water gauge bulbous... -
Page 6: Characteristics, Dimensions And Templates
CHARACTERISTICS, DIMENSIONS AND TEMPLATES vista frontale (mod. 3.15 - 5.24) (mod.5.32) Ø60/100 Ø80 1)CH flow ¾\“ 2)Flow tank 3/4 3)Flow tank 3/4 “ 4)Cool inlet 5)CH return 3/4“ 6)Gas inlet 1/2“ 7)Condense drain MERIDIAN HEAT INPUT HEAT OUTPUT HEAT OUTPUT... -
Page 7: User Instructions
1 USER INSTRUCTIONS 1.1 General warnings. This instruction Booklet constitutes an integral and essential part of the product. Make sure that it is always left near the appliance. Please, read carefully the advice and warnings contained in this section as they provide important indications on the boiler use. -
Page 8: First Start-Up
1.2 First start-up. Before the first start-up, please check that the system is properly filled with water and that it has pressure 1 ÷ 1.3 bar, then proceed as follows: • open the gas valve; • turn the selector (36) on the only DHW function or on the DHW/CH function; •... - Page 9 PRESS BUTTON MORE THAN 3 SECONDS TO ENTER IN INFO MODALITY PRESS THE BUTTON OK FOR MOVE FROM A WINDOW TO ANOTHER TILL ARRIVE TO THE “K REG” FUNCTION WITH UP E DOWN BUTTONS IT’S POSSIBLE TO CHANGE THE EXTERNAL TEMPERATURE CURVE. REFER FUNCTIONING CURVES FIG.3 PRESS THE BUTTON OK FOR MOVE FROM A WINDOW TO ANOTHER BUILDING SIZE PARAMETER: WITH UP AND DOWN BUTTONS...
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Page 10: Signals And Diagnostics
Cutting at 45° C at low temperature External temperature Fig. 3 N.B.: in systems with zones with different temperatures, the factor available with the low temperature room thermostat closed goes from 0.5 to 6 but the supply temperature is limited to 45° C whereas with a high temperature room thermostat request, it goes from 2.5 to 6 with a maximum temperature of 85°... -
Page 11: Operating Of The Solar System
Table 4 code fault Type of block No start-up or no flame detected Manual resetting is required Safety thermostat intervenes Manual resetting is required Faulty supply sensor It automatically resets if fault disappears Fault on flue gas sensor resistance Fixed with automatic reset – signaling for 24 hours Faulty external probe It automatically resets if fault disappears F 10... -
Page 12: Ch Pressure Regulation
N.B.: do not activate the solar system if the optional 2 sensor kit has not been installed because this may cause the system to malfunction and you may have to call the service centre to resume boiler operating Fig. 10 Display in solar mode: When the solar function is activated, an icon lights up indicating the solar system... -
Page 13: Definitive Dismantling
1.8 Definitive dismantling. In the event of the boiler definitive dismantling, it is to be performed by qualified personnel. Make sure that also the electrical, hydraulic and fuel supplies are disconnected 1.9 Problems, causes and solutions. The burner ignites but immediately locks out (code 1) The burner does not ignite The pump is noisy ⇐... -
Page 14: Installer Instructions
2 INSTALLER INSTRUCTIONS 2.1 Boiler installation 2.1.1 General rules The boiler installation is intended to be fixed and it must be carried out by professionally qualified staff, according to the actual national and local law, following all the instructions and rules contained in this manual. The boiler shall be installed in a room free of corrosive steam. -
Page 15: Installation
Clearances shall provide provision for service access and protection from combustible surfaces. Minimum clearances from combustible surfaces shall be 50mm at sides, 300mm from top and 300mm from bottom. ENSURE THAT THE AIR ENTRY IS NOT OBSTRUCTED BY ADJACENT CABINETS OR OTHER STRUCTURES. -
Page 16: Condense Drainage System
The 5.32 N-N3V boiler has been designed to operate on Natural Gas and Propane Gas. The 5.24 N-N3V boiler has been designed to operate on Natural Gas. Before performing the gas connection, all the ducts of the fuel system are to be cleaned inside in order to remove possible residual substances which could cause malfunctioning. - Page 17 Professionally qualified personnel shall verify that the electric supply system is adequate to the apparatus maximum power (140 W please see the rating plate), and that the wiring section is suitable to the power absorption of the machine. The use of electric adapters, extension cords or sockets are not recommended, but it is convenient to provide the system with a double-pole switch having at least 3 mm spaced electric.
- Page 18 Kit 2 sonde SolarSystem Colors wiring morsetti a vite esterni B: blue G : yellow M : brown N : black W : white V : green Fig. 4 spina esterna CR - Remot contro (optional) EA – ignition electrode P - circulator PS-Solar circuit circulator (opz) RL –...
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Page 19: Thermoregulation Devices And Accessories
Adjustment trimmer PBC P4: maximum fan speed P5:fan speed during ignition P2:minimum fan speed thermo setpoint or k factor setting with external probe present DIP switches: the board (see Fig. 4) has 6 DIP switches which can be moved to create the different operating options listed below: Dip- RECOMMENDED... - Page 20 potentiometer. In this way, you can adjust the flow temperature ±5° C by keeping the curve slope adjusted on trimmer P7 as described in Chap. 1. Turning knob clockwise completely till maximum, there will be a temperature rainsing 25° C. This could will be useful in the mid seasons when the external temperature is high and the flow temperature too low to heat the house.
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Page 21: Automatic High/Low Temperature Circuit
no control on the boiler functions which depend on the control panel commands. If the boiler has to operate at low temperatures and has remote control, simply select the required temperature directly on the remote control unit. When operating with the remote control without other thermostats (single zone system) jumpering must not be used on the room thermostat wires. -
Page 22: Filling The Ch Circuit (For Remote Tank)
An example of a hydraulic diagram for mixed temperature systems is given below. A mixing system as SILE TBA/TBA-M, must be used. The boiler will operate at the best temperature for optimising thermal comfort and energy performance. 1) Caldaia CONDENSA BI - BI COMPACT 2) Separatore idraulico da incasso TBA 3) Mandata termo 4) Ritorno termo... -
Page 23: Filling The Condense Drainage System
Be careful not to damage the pump. Never operate the pump without water Graphic of the available head (dotted area) and the curves of the pump flow/head characteristics (dotted) CONDENSA 5.24 - 3.15 BY PASS SBLOCCO... -
Page 24: Zone System
CONDENSA 5.32 BY PASS 2.14 Zone system AMB. In the hypothesis of a system supplied by several zone valves, they are supposed to be connected correctly to avoid the boiler pump functioning when all valves are closed. The following diagram shows how to connect them. -
Page 25: Safety Valve Tank
2.17 Safety valve Hot Water Storage tank (where used) The safety valve with is calibrated at 8 bar pressure. During the heating of the contents a dribble from unloading under certain conditions is predictable and normal. During installation direct the unloading valve to drainage duct. If dribble continue also with hot tank and boiler stop check the supply pressure :if this exceeds 5 bar apply a pressure reducer and check the safety valve to have an efficient drainage. -
Page 26: Configuration Type B23 Open Chamber And Forced Draft
*** In positioning the terminals, distances must be no less than 500 mm when they are near to materials sensible towards the action of combustible products (i.e.: plastic eaves and gutters, wooden overhangs, etc.) unless suitable protective measures are taken. The boiler is homologated with chimney configuration type: B23P . -
Page 27: Roof Outlet Air/Flue Duct Type C33
cutting an extension of 1 m at the required dimension. The air/flue duct must be installed on a perfectly horizontal position since it already has a minimum standard slant which prevents the condensate from dropping and freezing on the ground. The duct will be fixed following the relevant figures. - Page 28 Vista A A) Concentric air/flue ducts for roof outlet with PP outlet inner, ø 60/100 mm B) Lead flashing roofing tile C) Vertical flanged concentric compression fitting ø 60/100 mm with taps for air/flue drawing and PP inner duct, silicone lip gaskets and neoprene gasket. The vertical terminal can be connected to a coaxial air/flue duct (ø60/100 mm) having also an horizontal part.
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Page 29: Separate Air Inlet/Flue Outlet System
2.23 Separate air inlet/flue outlet system. Type C43 Please see also the specific catalogue "Air/flue Kits" - KIT AC for further information. Metallic sheath Seal with silicon Seal with mortar of mortar Guaina metallica Sigillare con malta cement Sigillare con silicone Plastic sheath di cemento cement... -
Page 30: Chimney Flue Outet Or Tubing Outlet Duct Type C53 - C83
or 1 m. extensions as necessary for a total of 18 linear meters. Pay particular attention to the catches as they must guarantee the complete sealing of air and flues. Each piece, either horizontal or vertical, must be suitably fixed to a wall or ceiling with proper supports or brackets. - Page 31 Guaina metallica Sigillare con malta Sigillare con silicone di cemento o malta di cemento Guaina in PVC Inclinare verso Inclinare verso il l'alto di 5 mm/m. basso di 5 mm/m. 1) Flue outlet terminal with grill. 2) Ø80 M.F. pipe (it can be shortened if necessary or extended up to 20 m with 1 m or 0,5 m). 3) Multi-directional 90°...
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Page 32: Solar System Functioning
opening has to have a net section not smaller than the ventilation door and it is to be protected by means of grilles or similar devices • in order to warranty a suitable ventilation section, with a ∅ 80 mm flue duct, it is necessary and sufficient a building internal or closed part having an 100 x 100 mm internal side or a ∅... - Page 33 Display in solar mode: When solar function starts a solar system icon light up . For 10 seconds after the solar pump activation, are visualized the temperature collector probe in big digits and the temperature solar tank probe (sanitary probe) in little digits. The solar system works when flat-plate solar collector temperature is higher than the temperature in solar tank in the gauge set in 5 parameter , that defines the temperature difference keeping between collector and tank.
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Page 34: Servicing Instructions
3 SERVICING INSTRUCTIONS 3.1 First start-up tests. Before starting up the boiler, check that: ♦ the fuel delivery line complies with current standards; ♦ the boiler is supplied with natural gas; ♦ it is connected to a 230V-50Hz network, has L-N polarity and earth connection; ♦... - Page 35 This is a safety parameter which blocks the solar circulator functioning when the tank boiler is greater than the parameter. For example if we set this parameter to 85° C, when the tank exceeds 85° C the circulator functioning will block and thus the amount of heat to the tank.
- Page 36 The fan rotation speed can be checked on the front boiler display. Fan rotation speed table. NATURAL GAS PROPANE GAS Ignition Ignition Models Min rpm Max rpm Min rpm Max rpm 3700 5.24 1250 4700 3500 3500 5.32 1500 5500 1900 5500 See paragraph 3.3.1 for methods of adjustment.
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Page 37: Gas Pressure Regulation
Gas Pressure Regulation Models 5.24 & 5.32 Natural Gas at Max Input at Min Input Model 5.24 9.3% 9.0% Model 5.32 9.7% 9.3% Propane Gas at Max Input at Min Input Model 5.32 10.7% 9.7% 3.2.2 Display menu. When the selector is set to Reset, three types of information on the boiler can be displayed: they can be selected using the sanitary knob. - Page 38 3.3.1 Measurement and adjustment of percentage of CO2. per MERIDIAN 5.24 e 5.32 (valve system + mixer Honeywell) To set the CO value, do the following: ♦ Remove the front cover of the boiler; ♦ Turn the boiler control panel and unscrew the two side screws that hold it in place.
- Page 39 3.3.2 Measurement and adjustment of percentage of CO2 for MERIDIAN 3.15 (valve system + mixer SIT) The adjustment of the gas valve and consequently of the CO2 have to execute regulating before maximum flow and then minimum flow To set the CO value, do the following: ♦...
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Page 40: Boiler Diagnostic
⇒ adjust by turning the screw only 1/8 turn and waiting for at least 1 minute after every turn for the value to stabilise; ⇒ Proceed as follows to check the setting at minimum capacity: ⇒ switch the heating potentiometer to minimum; the boiler is now operating at minimum power ⇒... -
Page 41: Selection Of Flow Temperature In Heating Mode. (Not Possible On Cascade Systems)
To quit this function, simply move the selector to the Summer, Winter or Off position or wait 30 seconds after the last operation. The MERIDIAN boilers are balanced to function at 18 kW for heating for MERIDIAN 5.24 and 25 kW for MERIDIAN 5.32 3.9 Selection of flow temperature in heating mode. -
Page 42: Maintenance Of The Burner And Heat Exchanger
• Check the soundness of the gas circuit • Check that there is no presence of water leakage from the boiler internal connections • Check that the condensing trap is free from obstructions, that there is a sufficient quantity of water inside and that the evacuation of the condense is correct. It Is better to avoid frequently draining of the system unless for specific alterations or repairs. - Page 43 fig. 5 fig. 4 To remove the heat exchanger and the burner : a) Screw out the four screws from the heat exchanger sides b) take off the flue thermofuse connection c) remove the spring clips pipe clamp d) loose and screw out the pump brass nuts and heating flow e) draw out the pipes from heat exchanger and then broaden the two clamps sides that block the heat exchanger;...
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Page 44: Problems, Causes And Solutions
3.14 Problems, causes and solutions. The burner ignites and then blocks (code 1 on the display) The burner doesn’t ignite Problems The boiler doesn’t reach temperature Heating is not sufficient The boiler does not produce DHW Cause DHW is not enough DHW is not hot enough Solutions Error code 5 or 6 on display... - Page 45 SOLUTIONS 13) check the efficiency of the safety thermostat. If it Check and replace defective parts works the boiler is overheating: check water level, expansion tank efficiency and thermal probe Replace the wire 4) Replace 5)Check with selector correct visualization on the display. If it is off, replace the small drive printed board 15)check the properly connection and replace if necessary...
- Page 46 29 A 19 A 29 B 30 A 19 B 30 B Filtro acqua termo Filtro acqua sanitaria Condensa 3.15 - 5.24 - 5.32 N3V...
- Page 48 Legenda Esploso N° Code Component description N° Code Component description 907610203 Water gauge Ø37 scale 0-4 bar with quick coupling 907100115 Mass cable Integrated selector in control board 907261181 Trap condense drainage 907520516 Board B&P display amber color 909320541 Heat exchanger Quickly attack O-Ring 907520515 Regulation board B&P DIM03-SI01 907520161 Probe NTC 10K D.4X30.6 AISI316 907430150 Wilo circulator RSL15/6 HE KU-CLF12...
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Page 49: Warranty
3.15 Warranty This warranty is valid provided that all the appropriate rules and standard procedures for the installation and use have been strictly observed. We decline responsibility for failures of the apparatus or damage to persons or things caused by: transport installation in which the current regulations and practices of good workmanship have not been respected...