Page 2
https://www.unicalag.it/prodotti/professionale-300/commercial-condensazione-alluminio/347/modulex-ext Provisions for proper disposal of the product After decommissioning, this appliance must not be disposed of as mixed urban waste. Separate waste collection is mandatory for this type of waste, in order to allow the recovery and reuse of the materials making up the appliance.
Attention: this manual contains instructions for the exclusive use of the professionally qualified installer and/or maintenance technician in compliance with current legislation. The user is NOT qualified to intervene on the boiler. The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from failure to comply with the instructions contained in the manuals supplied with the boiler 1 GenerAl InformATIon..............................4 General warnings ...............................4...
Any product repairs must be performed solely by personnel product and must be kept by the user. authorised by unical, using original spare parts only. failure to comply with the above can compromise the safety of the appli- ance and void the warranty.
Any other use shall be considered as misuse. UNICAL will not be held liable for any damage resulting from improper use. Use according to the intended purposes also includes strict compliance with the instructions in this manual.
1.5 - sAFETY wARNINGs Attention! the appliance must not be used by children. the appliance may be used by adults and only after carefully reading the operating instructions manual for the user / person in charge. Children must be supervised so they do not play or tamper with the appliance. Attention! the appliance must be installed, adjusted and maintained by profes- sionally qualified personnel, in compliance with the standards and provisions in force.
DAnGeR! Do not use the appliance to support any object. Specifically, do not place any liquid containers (Bottles, Glasses, Containers or Detergents) on top of the boiler. If the appliance is installed inside a box, do not insert or place other objects inside it. 1.6 - TEChNICAL DATA PLATE KeY: The CE Marking...
1.7 - wATER TREATMENT ATTENTION! feed water treatment prevents problems and ANY DAMAGE TO ThE BOILER CAUsED BY maintains the functionality and efficiency of the ThE FORMATION OF sCALING OR BY COR- generator over time. ROsIvE wATER wILL NOT BE COvERED BY ThE wARRANTY.
1.8 - BOILER ANTIFREEZE PROTECTION It is activated by default This protection can trigger only if the electricity and gas supplies are connected. If one of the two is not available and upon reset 11 (Sm) a temperature level between 2 and 5°c is detected, the appliance will behave as described in the table below, pos 2.
TEChNICAL FEATUREs AND DIMENsIONs NOTE! Further details in the section 2.1 - TEChNICAL FEATUREs ‘‘Technical Information’’ on the boiler page of the www.unicalag.it website 2.2 - INTERNAL vIEw wITh ThE INDICATION OF ThE MAIN COMPONENTs...
Page 11
c.e. S.e. description condensation drainage outlet Ufly control panel drain valve Gas valve Global return Sensor Burner cover Global flow Sensor e. Acc. Ignition electrode Automatic air vent e. rIl. detection electrode Smoke pressure minimum pressure limit Thermostat Pf min switch Burner Smoke pressure switch...
2.3 - DIMENsIONs FRONT vIEw RIGhT sIDE vIEw 62,5 LEFT sIDE vIEw TOP vIEw Flue Gas Outlets: Left side (supply conditions) Right side Rear side MODULEX EXT Dimensions no. of heating elements height 1448 1448 1448 1448 1448 1448 Width “l” 1087 1087 1355...
2.4 - OPERATING DATA AND GENERAL FEATUREs For the adjustment data: NOZZLES - PRESSURE - COLLECTORS - FLOW RATES refer to the paragraph ADAPTATION TO oTher TYPeS of GAS. moduleX eXT 348 eXT 440 eXT 550 eXT 660 eXT 770 eXT 900 Boiler category 2h3P 2h3P...
2.4.1 - TEChNICAL DATA ACCORDING TO ErP DIRECTIvE MODULEX eXT 348 eXT 440 eXT 550 eXT 660 eXT770 eXT 900 Element symbol Unit Effective nominal output Prated Seasonal energy efficiency of ƞ central heating Season efficiency class for heating For boilers for central heating and mixed boilers: effective heat output Effective heat output with...
2.4.2 - DETERMINATION OF ThE PRIMARY CIRCUIT PUMP OR BOILER PUMP The boiler pump must have head that is able to ensure the The pump is not an integral part of the boiler. pump's flow rates according to the circuit's ∆t. It is recommended to select a pump with a flow rate and head of approximately 2/3 of its characteristic curve.
INsTRUCTIONs FOR INsTALLATION 3.1 - GENERAL wARNINGs ATTENTION! In rooms with the presence of aggressive ATTENTION! vapours or dust, the appliance must operate This boiler is intended solely for the use it independently from the air inside the instal- was expressly designed for. Any other use lation room! is considered improper and therefore dan- gerous.
- The flue gas exhaust manifold Unical will not be held liable for damage to per- sons, animals or objects due to failure to comply - A cardboard box containing: with the above instruction.
3.4.1 - UNLOADING AND REMOvING ThE PACKAGING ATTENTION! ATTENTION! strap passage points for lifting. The straps must handling with forklift or strap hoist, be mounted on the load-bearing crosspieces. T max 50°C/122°F T min -5°C/23°F Max. admitted boilers Do not turn upside down Do not expose to rain Fragile Do not expose to sunlight...
3.5 - POsITIONING IN ThE BOILER ROOM Special attention must be paid to the standards and local laws comply with the minimum clearance distances in with regard to boiler rooms, especially the minimum distances order to execute normal maintenance and cleaning that must be kept free around the boiler.
3.6 - FLUE GAs EXhAUsT PIPE CONNECTION To connect the flue gas exhaust pipe, local and national stand- The boiler is type approved for the exhaust configurations listed ards must be observed below: B23P ATTENTION ATTENTION for this type of connection, the room follows the for the C63 configuration, you must order same installation rules for boilers with natural the optional air intake kit, which contains the...
3.7 - BOILER CONNECTION The moduleX boiler leaves the factory ready for hydraulic (flow and return), gas connections on the left side of the boiler. To fix the flue gas exhaust manifold, use the screws and gaskets contained in the accessory kit box and a 10 mm socket wrench. The flue gas manifold is set-up on the LEFT SIDE, the outlet can also be set-up on the rIGhT and reAr SIde.
3.8 - CONNECTION G 3’’ FLOw G 4’’ RETURN G 4’’ Danger! The gas must be connected only by a qual- ified installer who must respect and apply the requirements set forth by relevant laws in force and by the local prescriptions of the supply company.
Page 23
Condensation drain The boiler, during the combustion process, produces conden- sation that, through pipe “A”, flows into the trap. into a suit- The condensation that forms inside the boiler flows able drain via pipe “B”. Danger! The outlet of the condensate drainage pipe is towards the con- Before commissioning the appliance: nection side of the flue gas box manifold, removing the pre-cut - check that the siphon is assembled correctly...
3.9 - FILLING AND EMPTYING ThE sYsTEM When all system connections have been com- pleted, the circuit can be filled. To fill the system, you must provide a filling valve on the system's return. EXAMPLE OF ThE sYsTEM's LOADING UNIT unIT of loAdInG To fill the system, you must provide a filling valve on...
3.10 - ELECTRICAL CONNECTIONs Danger! Before performing connections or any type of operation on electrical parts, always disconnect the electrical power and make sure that it cannot be reconnected accidentally. 18:28 giov 30 °C °C °C effettiva richiesta sanitaria 10/10 generatore modulazione status...
Page 27
Electrical connection to the main power sup- Danger! ply. Only a qualified technician may perform the This connection must be made up to standard, as electrical installation. required by regulations in force. remember that a bipolar switch must be installed on the boiler power line with over 3 mm between contacts, easy to access, making maintenance quick and safe.
Page 28
NOTE: The boiler is set up for direct flow and storage tank Should additional services be requested (storage tanks, mixed management. areas, solar, etc), you must purchase shC multifunction kits for If stemp. ACC is connected automatically, dhW is full control through the Ufly P heating control. activated, which will have priority management with regard to direct flow through the pumps shown be- low.
Page 29
connections for: Y2 Bcm Y4 - Bcm modbus Bcm remote boiler control Alarm signal 3 - 4 Alarm / signal contact (no potential-free contact) A (1) data connection (**) B (2) data connection P. coll. 1 - 2 manifold pump (primary loop) P.
Page 32
Connection diagram example: 2 modulex in pack managed by cascade manager primary loop Menu 230 V - 50 Hz 0-10V Ext. Min mod. (*) Note: Y4- BCM Y3- BCM Y2-HSCP/UFLY Y1- BMM1 for the cascade connection, position the selector on the Bcm in the indicated position.
Page 33
with direct zone and dhW production. secondary loop Stemp. P. Car. 12 11 10 9 8 7 6 5 4 3 2 1 Note: In case of installation with single boiler, the above connections must be made on the return terminal board (Bcm board) inside the boiler.
3.11 - COMMIssIONING commissioning must be done by professionally Before commissioning the boiler, check the following: qualified personnel. Unical will not be held liable for damage to persons, animals or objects, due to failure to comply with the aforesaid instructions.
3.12 - MEAsUREMENT OF ThE COMBUsTION EFFICIENCY DURING INsTALLATION Generator Menu 3.12.1 - CALIBRATION FUNCTION (ChIMNEY swEEP) ATTENTION! ATTENTION! These functions are explained in Function reserved for After sale chapter 2.9 (Burner menu) of the service Centres only. Ufly P. TOUCH CONTROL instal- lation and maintenance manual.
3.13 - ADJUSTING THE BURNER All boilers leave the factory already calibrated and The following instructions are intended exclusively tested, however, if required, recalibrate the gas for authorised service personnel. valves (module 1, module 2, etc.) ATTENTION! To access the gas valves more easily, release the electrical panel “A”...
remove the cap and insert the co2 analysis sensor in the flue gas sample point of the intake/exhaust terminal, see chap. 3.12.2. 2) Minimum output adjustment 1) Maximum output adjustment - operate the boiler in “calibration” mode at mInImum ouTPuT - operate the boiler in “calibration”...
Follow this procedure to also adjust the other modules. If the capacity read is too low, make sure the power feed and drain system (feed and drain pipes) are not clogged. If they are not clogged, make sure the burner and/or heat ex- changer is not dirty.
3.14 - EMERGENCY OPERATION AND sAFETY DEvICEs 18:28 giov 30 °C °C °C effettiva richiesta sanitaria 10/10 generatore modulazione status INFO MENU The Bcm prevents system shutdown if the man- noTe: agement of the Ufly system or main boiler system The devices are positioned under the casing, next is out of service to the control unit.
Page 41
3.15 - PROGRAMMING ThE OPERATING PARAMETERs ATTENTION! ATTENTION! These functions are explained Function reserved for After sale in chapter 2.8 (DEvICEs menu) service Centres only. of the Ufly P. TOUCH CONTROL installation and maintenance manual. Bmm parameters code Symbol description unit min.
Page 42
Bcm Parameters code Symbol description unit min. max. Imp. fab. enabled Services Gen: Temp. Max Differential °K 50.0 Burner hysteresis °K 20.0 ch#1: minimum Set-point °c 20.0 40.0 ch#1: maximum Set-point °c 45.0 85.0 Input 0/10V Programmable Input #1 Pump: Post-circulation min.
3.16 - ERROR CODEs fault that causes the boiler to stop: fault that does noT cause the boiler to stop: - The error code is displayed, the boiler has stopped - The error code is displayed, the boiler has a heat- running.
Page 44
NO AIR UPON IGNITION check that the fan head is at least 60 Pa. stop UNEXPECTED AIR FLOw Blocked min pressure switch (closed) sPEED OUT OF CONTROL check fan operation (18) and the connections Alteration of the fan speed; the speed is not reached.
4.1 - INsPECTION AND MAINTENANCE INsTRUCTIONs To assure long-term functioning of your appliance and to avoid once all maintenance operations are complete altering its approved status, only original UNICAL spare parts resume boiler operation must be used. • Open the heating flow and return pipes, as well as the cold water inlet valve (if closed previously).
Page 46
we recommend having qualified technical personnel carry out the provisions of current regulation concerning periodic maintenance checks. Since the dust is vacuumed inside, the fl ue gas side resistance, through the boiler, increases which, eventually, will lead to a reduction of the thermal load (and, consequently, of the power). Before cleaning, check the thermal load (see 3.13) and the percentage (see 3.13).
Page 47
- remove the red silicon pipes and then the fan chamber • Element screws - remove screws “A” for each element - release the fan chamber fastening spring (with socket wrench and 13 mm fl at spanner) (right/left side).
Page 48
• Element screws - remove the gas pipe fastening screws (right and - remove screws “A” for each element left sides) (with 13 mm socket wrench) - remove the four screws with a 10 mm socket wrench, then - remove the screws “B” (with 13 mm socket wrench / 13 the gas fl ange mm hex spanner) and remove the fastening plates...
Page 49
- lift the burner block (front part) - Slightly lift the rear burner block and remove the 2 pins using a 5 mm hex spanner, until you reach the holes “C” (left and right side). - Remove the gas fi ttings from the gas manifold using the 36 mm fl at spanner.
Page 50
second phase – Cleaning • Remove the gaskets and the burners. • Dry clean the burners by blowing compressed air from the “flame side” • Visually inspect the welding on the corner pieces and on the burner mesh. The burner gaskets must be replaced at each cleaning operation.
4.2 - PRACTICAL CONNECTION wIRING DIAGRAM ALIM. VENT. ALIM. VENT. EXT 100 ÷ 350 EXT 440 ÷ 900 N° MOD. FILTER POSITION BETWEEN MOD. 2-3/4-5 intermediate / 2-3/4-5 1° Mod. 2-3/4-5/6-7 last module VM (A) VM (A) VM (A) VM (A) VM (A) VM (A) FILTER...
Page 53
ALIM. VENT. COLOURs Blue BroWn BlAcK Green VM (A) VM (A) GreY SKY Blue orAnGe PInK YelloW INAIL YelloW Green FILTER FILTER WhITe VIoleT VIolA 12 11 10 9 8 7 6 5 4 3 2 1 +24V 3 4 5 6 7 10 11 12 13 14 1 2 3 4 5 6 3 4 5 6 7...
Page 54
- [email protected] - www.unical.eu unical shall not be held liable for any inaccuracies due to transcription or printing errors. Furthermore, it reserves the right to modify its products as deemed necessary or useful, without aff ecting their essential features.