Related Manuals for Italtherm CITY MAX 26 K
Summary of Contents for Italtherm CITY MAX 26 K
- Page 1 CITY MAX Instruction Handbook for: us e in s t a l l a ti o n a d j u st m e nt m ai n t en an ce IMPORTANT! Install the gasket included in the documents bag, on the inlet/outlet flange, as shown on page 21.
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Page 2: Table Of Contents
Table of Content Safety warnings Condense drain ......18 System filling and pressuring ....19 Safety warnings symbols legend . -
Page 3: Safety Warnings
Safety warnings This instructions manual is an essential and complementary part of the product and it is supplied to- gether with the boiler. Carefully read the manual, achieving all important information for a safe installation, use and servicing. f Carefully keep the manual, together with the documentation of all the accessories of the boiler and of the system, for any further consultation you may need. -
Page 4: Safety Warnings Symbols Legend
Safety warnings symbols legend Generic safety Electrical danger Physical danger warning (fulguration) (personal damage) Thermal danger General warning or advice to avoid material damage (burns) or to achieve improvements References to Laws and Norms All the references to norms and national laws mentioned in this handbook are indicative as laws and norms are subject to issues and integrations by the authorities in charge. -
Page 5: User Warnings
First starting up and Use The first starting up and the maintenance of the boiler must be performed by a professionally qualified staff (for example the installer or the Service Centres authorized by ITALTHERM) The latter will check that: f the label technical data of the gas boiler correspond to those of the gas available;... -
Page 6: Installation, First Starting Up, Maintenance And Servicing
f Do not expose the wall hung gas boiler to water or other liquids sprinklings, or to vapours directly coming from gas cookers/hobs. f Do not obstruct the air inlet or flue outlet terminals, even momentarily or partially. f Do not put any object on the gas boiler and don't leave any flammable liquid or solid materials, (e.g. paper, clothes, plastic, polystirene) in its proximity. -
Page 7: User Guide
User guide The front control panel Electrical Supply Indicator Light green Off - boiler not electrically supplied. Blinking - boiler electrically supplied, but not active because the knob 12 is on . On - boler active. Knob 12 on , or on along the scale Flashing with short pulses - actuated for mistake, by the user, a function reserved to the technician. -
Page 8: Commands On The Lower Side
Position on which the knob 12 should be positioned to turn the boiler off or to reset a boiler block. Position on which the knob 12 should be positioned to activate the boiler in Winter mode (both Heating and Domestic Hot Water functions available) (attention: only if the Remote Control Kit is not installed). -
Page 9: Typical Use
On trade are available programmable room thermostats: most of them allow to make a weekly programming of various temperature levels, besides special programs for various purposes. We suggest to choose original ITALTHERM accessories. Typical use Preliminary operations f Firstly, the knob 12 should be on the position ... -
Page 10: Temperature Adjustment
Temperature adjustment Note: correct adjustment leads to creating the conditions for energy saving. f Heating system adjustment: by rotating the knob 12 along the scale 10, the setting of the heating system temperature is made (the value, during the adjustment, is shown on the display 5). Generally, in the deep cold season and/or with poor building thermal insulation (or if you notice that the burner stays on for a long time, but the room temperature rises too slowly) prefer higher settings. -
Page 11: The Burner Doesn't Turn On
Boilers must be always equipped with original accessories only. ITALTHERM Srl is not responsible for damages caused by the incorrect, wrong or unreasonable use of not original materials. The burner doesn’t turn on f if the room thermostat (or programmable room thermostat, or similar) is installed, check that it is really requiring the room heating;... -
Page 12: Stand-By Mode With Anti-Frost & Anti-Locking
• completely empty the hot and cold sanitary water system, including the sanitary circuit and the tank of the domestic water storage. Remark: the boiler is equipped with a system which protects the main components from the excep- tional cases of mechanical lock, due to the inactivity in presence of water and scale. The anti- locking function can’t work in Safety shut off mode, because of the lack of electrical supply. -
Page 13: Ambient Anti-Frost" Function
“Ambient Anti-Frost” Function If the building relevant to the boiler remains unoccupied during cold weather periods, you should con- sider the chance to extend the protection against freezing to the whole heating system (and therefore to the rooms) besides the boiler itself. Also for this function, the boiler must be receiving gas and elec- tricity, and the system pressure must be correct. -
Page 14: Dimensions And Connections
Dimensions and connections ±12 ±12 ±12 City Max 26 K City Max 32 K front view - front view - left side view - hydraulic connections hydraulic connections hydraulic connec- on the wall on the boiler tions on the boiler... -
Page 15: Warnings For The Installation Of Optional Kits Or Special Systems
ITALTHERM S.r.l. will not be held responsible for consequent damages. Instruct the User about the antifreeze function of the boiler and about the antifreeze product added in the heating system. -
Page 16: Siphon Overflow Drain
Siphon overflow drain The boiler’s siphon is equipped with a supplementary safety discharge SCD that protects the burner in the very situation in which the condense does not from correctly from the drain pipe downstream from the siphon. Since this is easily accessible from the rear of the boiler, evaluate the opportunity to use it or not before installing the boiler, by connecting to it a section of flexible hose 1 suitable for condense. - Page 17 f If the metal jig is used, hang it on the wall using the same wallplugs or hooks and the holes or slots indicated in the figure ( A for the plugs and B for the open hooks). f Fix up the connections and all ducts for heating flow and return, cold water, hot water, gas and electrical cables, predisposing them in the holes of the metal jig or respecting the measures in the paragraph "Dimensions and connections"...
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Page 18: Hydraulic System (Dhw And Heating)
(consider that 1 mm of limestone incrustations reduces of 18% the thermal exchange of the heating element on which it has been formed). ITALTHERM guarantees its products only if the characteristics of the water comply with UNI 8065, re- ported also in laws on energy saving. -
Page 19: System Filling And Pressuring
System filling and pressuring Once all system connections have been carried out, proceed with the filling of the heating system and of the DHW storage. This operation should be made with care, respecting the following steps: The operations to completely purge the air from the heating system and from the storage coil, require the activation of the boiler, therefore the final purging must be performed, by qualified technicians, during the first starting up. -
Page 20: Gas Connection
Gas connection Due to various installation possibilities, the gas cock 3 supplied with the original Connections Kit has a sim- ple male Ø ½” connection, facing the rear of the boiler. The gas pipe 4, upstream the gas cock 3, should be sup- plied by the installer. -
Page 21: Electrical Connections
ITALTHERM S.r.l. declines any responsibility for damages to persons, animals or things caused by the faulty or missing connection of the boiler earthing and by failure to comply with the rules. -
Page 22: General Indications
General indications To grant the functionality and efficiency of the appliance it is indispensable to realize inlet and outlet ducts using flue accessories specific for condensing boilers. WARNING: the specific flue accessories components for condensing boilers, especially the parts which are in touch with the flues inlet, are so projected because they are made with plastic ma- terials acids resistant, but because of their nature, they are not suitable to resist to the higher temperature of the flues of the traditional boilers. -
Page 23: Dimensioning The Inlet And Outlet Ducts
Dimensioning the inlet and outlet ducts In the list that follows, you will the characteristic losses of load of the original fume venting accessories, expressed as equivalence in meters (m). Se fossero previsti accessori di fumisteria originali aggiuntivi rispetto a quelli raffigurati, nel cal- colo della lunghezza totale devono essere considerate le relative perdite di carico equivalenti, espresse come equivalenza in metri (m) nell’elenco seguente. -
Page 24: Flue System Types
Flue system types Split pipe system (C Example of split pipe Original*** split pipe system Ø80mm Mod. system (C AS+SC min÷max (m) SC max (m) 26 K 1 ÷ 52 32 K 1 ÷ 52 Original*** split pipe system Ø60mm 26 K 1 ÷... -
Page 25: Examples Of Installation Of Inlet And Outlet Ducts
Examples of installation of inlet and outlet ducts We give you some correct and wrong examples of installation of inlet and outlet ducts for condensing boilers (the slope are voluntarily represented in an exaggerated way). A = Inlet; S = Outlet. 1: the most functional and economic solution is to let the condense come back towards the boiler. -
Page 26: Adjustment And Maintenance
Adjustment and Maintenance WARNING: Hereby described operation can be performed by qualified technicians only. When regulation/measuring is over, remember to tighten pressure tapping point screws and to verify the absent of gas leakages only from net pressure plug (PIN, see the picture of the gas valve) and from the connection upwards the gas valve. -
Page 27: Maintenance Operations
f verify the presence of the permanent air/ventilation outlets, correctly dimensioned and working, as foreseen by the National and Local laws depending on the appliances installed; f verify that the evacuation flue duct corresponds to the National and Local laws and that is in good and efficient conditions;... -
Page 28: Access To The Inside Of The Boiler
f verify the correct functioning of the system of the outlet condense, also in the external parts of the boilers, i.e. the eventual condense collector installed on the flue outlet: verify that the liquid flow is not obstructed and that there are not inlets of gaseous combustion products inside the system itself; f verify that the conditions for the air inlet are granted, in case of a boiler placed inside a piece of furniture;... -
Page 29: Venting The Primary Exchanger
Venting the primary exchanger When commissioning and cleaning the combus- tion unit, it is a good idea to check that there is no air in the primary circuit of the combustion unit and, if necessary, to eliminate it by opening the valve 4 located on the top of the unit. -
Page 30: Combustion Group Cleaning
11. repeat steps 4. to 10. performing several working cycles and coil venting, both in heating and DHW mode, until all the air has been vented from the primary coil of the storage, and the noise caused by the air ends. 12. -
Page 31: Combustion Test And Adjustment
Do not disassemble the burner group and do not dismount the ceramic fibre plate from the bot- tom of the exchanger. f check the integrity of the insulating coverings inside the combustion chamber; f on the burner cover, check the integrity of the fireproof fibre gasket and of the silicone rubber one; f check that the burner do not present deposits, foulings or excessive oxidations and that all the holes are free;... - Page 32 on the flue flange, unscrew the screw 1 and move the tapping insert 2 in such a way to tap the inlet plug A only; insert the analyser sensor in the flue plug F, taking care of the seal of the connection; Remark: The device placed at the top of sensor must be placed as possible in the centre of the flow outlet: we advise you to insert well the sensor and so to extract it of 3 cm.
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Page 33: Max Heating Power Adjustment
• If the CO value is HIGHER than allowed, turn the screw R.Q. ADJ. CLOCKwise; • If the CO value is LOWER than al- lowed, turn the screw R.Q. ADJ. COUN- TERCLOCKwise; Remark: if you have adjusted the CO the nominal input, we advise you to check again the CO and the off-set at the reduced input (steps 3 to 7). -
Page 34: Power Input / Display / Fan Rpm Table
• wait (approximately five seconds) that the display shows “PO” (POwer) flashing (moreover, both the GREEN and RED indicators flash to short “pulses”). • when the display shows “PO” flashing, within 15 seconds turn the Summer/Winter knob on the MAXIMUM value of the scale of the heating (fully clockwise). -
Page 35: Electronic Settings
HEAT INPUT FAN RPM INDICATIVE DISPLAY Natural gas Commercial kcal/h VALUE Propane G31 MIN. 6.9 5934 1500 1600 8170 1930 2030 12.0 10320 2360 2460 14.5 12470 2790 2890 17.0 14620 3220 3320 19.5 16770 3650 3750 22.0 18920 4080 4180 24.5 21070... -
Page 36: Gas Conversion
OFF In City Max "F" boilers it must be OFF. Factory setting. Gas conversion ATTENTION: the operations described below must be carried out only by qualified personnel [authorized by ITALTHERM S.r.l.]. For gas conversion, use the components supplied by boiler manufacturer only. - Page 37 Disconnect the boiler from the electrical supply. Remove the boiler cover as described in the paragraph "Mainte- nance operations" on page 27; access the main board and switch SW1 (see also "Main board settings" on page 35) accordingly with the avail- able gas type: •...
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Page 38: Hydraulic Settings (Pump Speed)
14. check the combustion as described in the preceding paragraph "Combustion test and adjustment" on page 31 checking that the fan speed automatically change; 15. apply the label indicating the type of gas (provided with the kit) in the area provided on the “WARN- ING”... -
Page 39: Alarms - Boiler Block
f when the draining is over, close the draining tap (turn it clockwise). Alarms - boiler block Following a malfunction, the boiler can lock-up and show a particular signalling, consisting of an alarm code on the display and of the status of the RED light indicator (and eventually of the GREEN and the YELLOW ones). - Page 40 Signal Probable causes Suggested solutions the boiler has over- Turn the knob on the unlock position until the red lamp heated turns off (or eventually for a longer period to make the boiler cool), Safety Thermostat then bring the knob in the previous position. If necessary, wait and has triggered try again for few times.
- Page 41 Signal Probable causes Suggested solutions Fan failure. User: Restore the boiler function by turning the knob on the unlock position , wait the red light to turn off, then bring the The burner fan is knob in the previous position. stopped or rotates Check the burner fan functionality.
- Page 42 Signal Probable causes Suggested solutions Unexpected flame Wait for the boiler automatic reset (5 minutes) or reset it manually , waiting the by turning the knob on the unlock position the control elec- red light to turn off, then bringing the knob in the previous position. tronic has detected If the lockout persists or reappears, call the Service Centre the flame on the...
- Page 43 Signal Probable causes Suggested solutions Over-temperature The water that returns to the boiler from the heating system is too of water on system hot: this may be an effect of a malfunction of the system, and any- return way this can cause a too high temperature of the flue and damage the flue system.
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Page 44: Warnings For Servicing
Clean casing with soapy water only. Do not clean casing, other painted or plastic surfaces with thin- ner. f In any case of parts replacement, it is mandatory to use ITALTHERM original spare parts. ITALTHERM declines any responsibility in case of non-original spare parts utilization. -
Page 45: Technical Data
Technical data TECHNICAL DATA City Max 26 K City Max 32 K U.M. Gas type CE certification 0694 CM 3400 Class 2H3P 2H3P B23 - B23P - C13 - C33 - C43 - Type C53 - C63 - C83 - C93 Working temperature range °C... - Page 46 TECHNICAL DATA (cont'd) City Max 26 K City Max 32 K U.M. Gas type Expansion vessel Expansion vessel pre-loading pressure 0.5 / 0.9 0.5 / 0.9 (±0.2) (±0.2) Loss of water pressure switch To allow the correct system filling, the pressure of the domestic off / on pressure water should be higher than the ON value of the pressure switch.
- Page 47 TECHNICAL DATA (cont'd) City Max 26 K City Max 32 K U.M. Gas type GAS CONSUMPTION m³/h 2.77 3.39 Qmax kg/h 2.03 2.49 m³/h 0.56 0.73 Qmin kg/h 0.41 0.53 Notes Green Heating Technology...
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Page 48: Boiler Internal Components
Boiler internal components 24 23 20 19 Plug for Combustion analysis (air inlet) 22 DHW filter Plug for Combustion analysis (flue) 23 Flow limiter Combustion assembly overheat fuse 24 Storage drain valve (connector) 25 Pipe for condense outlet Flue overheat fuse 26 Storage inspection door Combustion assembly 27 Storage tank... -
Page 49: Electrical Diagram
Electrical diagram 32.1 YE-GN 32.2 YE-GN YE-GN 43 44 45 51 52 60 61 62 63 64 65 51 52 43 44 45 61 62 63 64 65 1 HEA 2 COM YE-GN 3 DHW 32.2 Combustion assembly overheat fuse (*) Optional external devices: Flue overheat fuse 70 Room thermostat:... -
Page 50: Hydraulic Diagram
Hydraulic diagram This diagram is for information only. To make boiler hydraulic connection either see "Dimen- sions and connections" on page 14 and eventually "Positioning and fastening" on page 16. Sealed chamber 32 Fan 10 Gas injection pipe 33 Temperature Sensor, system flow 11 Siphon for condense outlet 34 Air/Gas Mixing System 12 Temperature Sensor on system return... -
Page 51: Addendum
Addendum Outdoor Sensor Kit Installation and setting The Outdoor Sensor manages automatically the CH flow temperature** as a function of the outdoor temperature, thus avoiding the user to adjust it manually. This function is also named "shifting tempera- ture". that's the temperature of the heating elements. Don't mistake it with the room temperature (managed by the room thermo- stat or by the Remote Control, but not by the boiler) that doesn't depend on the first one. -
Page 52: Remote Control Kit
Remote Control Kit This remote control is more than a simple room thermostat. Thanks to this, it is possible to manage the boiler in all its set- tings like DHW and CH temperature adjustment, boiler reset in case of boiler block, and of course it works as a room thermo- stat both in manual and weekly program mode. - Page 53 Notes Green Heating Technology...
- Page 54 Notes Green Heating Technology...
- Page 55 Notes Green Heating Technology...
- Page 56 ITALTHERM Srl Via S. D’Acquisto, snc • 29010 Pontenure (PC) - IT Tel. +39.0523.575611 • Fax +39.0523.575600 www.italtherm.it • e-mail: info@italtherm.it UNI EN ISO 9001:2008...
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