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Table of Contents
Summary of Contents for termovana Stella
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Page 2: Table Of Contents
Table of Contents page Overview …………………………………………………………………………….. ………………………………………………………...……………. General warnings Safety Measures …………………………………………………………………………..…….3,4 Installation…………………………………..……………………………………... Pre-installation warnings ……………………………………………………………………… Location ……………………………………………………………………………………………5 Dimensions and templates ……………………………………………………………………….6 Minimum clearances …………………………………………………………………………….. 6 Gas connections …………………………………………………………………………………. 7 Water connections……………………………………………………………………………… 8,9 Flue exhaust connections…………………………………………………………………. 9,10,11 Feed cable and room thermostat connections……………………………………………. 12,13 Electrical layout …………………………………………………………….…………….………... -
Page 3: Overview
OVERVIEW This booklet is an essential part of the product. The user must keep this booklet in good condition. It must always accompany the boiler when it is transferred to another owner or user and/or installed in other premises. The instructions and warnings relating to installation, use and maintenance safety contained in this booklet should be read carefully General warnings The technical instructions contained in this booklet are intended to help installers install the boiler... -
Page 4: Safety Measures
Safety Measures STANDARD RISK Noise during operation. The appliance must be installed on a vibration-free solid wall. Electric shock when coming into contact with live wires. Be careful not to damage or perforate the wall or Explosion, fire or intoxication due to gas leakage the existing electrical cables and pipes. - Page 5 STANDARD RISK Make sure the working area presents adequate health conditions with respect to lighting, Risk of personal injury from knocks, trips, etc. ventilation and sturdiness. Handle the appliance with proper care. Risk of personal injury from knocks, trips, etc. Use adequate material to protect the appliance and Damage to the appliance or the adjacent objects the zone near the working area.
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Page 6: Installation
INSTALLATION The installation and initial ignition of the boiler must only be carried out by qualified technicians complying with national installation regulations in force and with any local authority and public health organisation requirements. While carrying initial ignition, maintenance, combustion analyses or any other technical operation, only a qualified technician must be present near the boiler or in the room where it is installed. -
Page 7: Dimensions And Templates
This type C appliance has an environmentally friendly sealed combustion chamber and air supply circuit. There are no restrictions concerning ventilation conditions and room dimensions. The installation area must satisfy the maximum temperature values so as not to impair the correct functioning of the boiler. The boiler has been designed to be installed on a wall and cannot be installed on a base or on the floor. -
Page 8: Gas Connections
Gas connections Warning Check that the appliance is gastight as required by the regulations in force. Protect pipes and connection cables so that they cannot be damaged. Make sure that the nozzles and the burners are compatible with the gas supply. The boiler has been designed to be used with “2E”... -
Page 9: Water Connections
4. Hot water outlet 1/ 2” 5. Heating system flow 3/4" Warning Protect connection pipes so that they cannot be damaged Residual head of circulators 1. Circulator fitted Stella 24 models 2. Circulator fitted Stella 28 models 0,25 0,75 1,25... -
Page 10: Flue Exhaust Connections
100) or a roof discharge, always coaxial, with an appropriate adapter (Ø 80 – 118). For a “STELLA 24” model: 4 m long max + a 90º bend For a “STELLA 28” model: 3 m long max. + a 90º bend... - Page 11 To use the coaxial system, follow these steps: 1. Connect the MF bend to the central flue spigot with the appropriate ring. 2. Use the screws to fasten the metal clamp onto the ring. . 3. Correctly position the circular silicone gasket. 4.
- Page 12 These diagrams show examples of several types of coaxial or Types of coaxial flue systems twin flue ducts. For further information on discharge/ inlet accessories, refer to the Fume Catalogue. Types of twin flue systems The L value of maximum performance, indicated in the chart, includes the flue/ air duct and it also includes a curve for coaxial systems.
- Page 13 Electric connections Warning The burner is continuously powered, even when the switch is in the “OFF” position. The power supply should therefore be cut off using the externally fitted switch before carrying out any operation on the burner. Warning Protect pipes and connection cables so that they cannot be damaged.
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Page 14: Feed Cable And Room Thermostat Connections
Feed cable and room thermostat connection To power the boiler and connect the room thermostat, follow these steps: 1. Set the externally-fitted switch to the “OFF” position 2. Remove the lower flap to reach the terminal board. 3. Make all connections according to the indications in the diagram of the terminal board;... -
Page 15: Electrical Layout
Electrical Layout Screw “A” pressure inlet... -
Page 16: Boiler Inspection
Boiler Inspection Warning The burner is continuously powered, even when the switch is in the “OFF” position. Before carrying out any operation on the burner, make sure that the power supply has been cut off. . 1. In order to dismount the front panel follow this procedure: •... -
Page 17: Preparing The Boiler For Initial Ignition
4. In order to access the combustion chamber: • Dismount the expansion tank by removing the fastening screws from the mounting brackets (F). • Remove the screws (G) and pull out the front housing in order to separate it from the lower drawbars (H) (carry out this operation very carefully to avoid damage to the refractory panel installed there). - Page 18 Check to see that the water circuit is perfectly sealed and that the safety • valve works properly; • Check that the boiler is suitable for use with the type of gas available; • Open all doors and windows; make sure that there are no naked flames or sparks;...
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Page 19: Initial Ignition And Further Checks
Warning If any of the above mentioned controls yield negative results, the system cannot be set into service. Initial Ignition and Further Checks Warning While carrying out the initial ignition operations, only qualified personnel must be present near the boiler or in the room where it is installed. - Page 20 SANITARY HEATING Boiler built-in fault finding system RED LED GREEN LED GREEN LED Ionic control during lock-out Activation of safety thermostat Activation of fumes thermostat ON L Boiler settings error FF/ATM Activation air pressure switch Parasite flame ON L ON L Activation of H O flow switch ON L...
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Page 21: Operation Adjustment And Gas Flow Regulation
The gas cock fitted in the boiler should also be closed. The “STELLA” boiler allows: • The heating circuit temperature to be adjusted using a knob (1). • The hot water circuit temperature to be adjusted using a knob (2). -
Page 22: Boiler Protection Systems
Boiler Protection Systems The boiler has been equipped with the following systems: 1. Lack of water: this control shuts off the boiler if the system water pressure gauge reads a pressure lower than 0.5 bar (see Chart No. 1). 2. Overheating: this control locks the boiler out if the system temperature exceeds 100º... -
Page 23: Maintenance
Maintenance General Concepts Warning Maintenance is to be carried out according to the provisions of the regulations in force. This is essential in order to guarantee the safety, proper use and duration of the appliance. Maintenance shall be carried out every 12 months on the basis of the provisions of the Presidential Decree No. -
Page 24: Procedure For Emptying The Installation
Procedure for emptying the installation Heating system installation: The heating system should not be emptied frequently since water refilling increases the amount of scale build-up inside the boiler and the radiators. If the heating system is not used in the winter, it may be necessary to add some anti-freeze agent to the water inside the appliance. -
Page 26: Users' Manual
Keep this booklet for further information. Should you need further assistance, contact our area-servicing engineer. Yours, Termovana uno Failure to observe this warning may cause serious injuries, which may even be fatal in some cases. Failure to observe this warning may cause serious damage to the appliance, objects, plants and animals. -
Page 27: General Safety Rules
General Safety Rules Some fundamental rules must be observed when using equipment with fuel, electrical energy or water. During the initial ignition phase or when carrying out any servicing operation, unskilled people must not remain in the room where the appliance is installed or in the near vicinity. -
Page 28: Getting To Know Your Boiler
Getting to Know Your Boiler Control Panel SANITARY HEATING Boiler built-in fault finding system RED LED GREEN LED GREEN LED Ionic control during lock-out Activation of safety thermostat Activation of fumes thermostat ON L Boiler settings error FF/ATM Activation air pressure switch Parasite flame ON L ON L... -
Page 29: Boiler Set-Up
Boiler Set-up The boiler may operate automatically once the service operator has carried out the initial set-up. However, users may need to set up the appliance by themselves, without the intervention of qualified personnel. If this is the case, carry out these controls: •... -
Page 30: Maintenance
Maintenance Scheduled and preventive maintenance is essential to guarantee the safety, proper use and duration of the appliance. Maintenance reduces excessive use and contaminating emissions, and it also ensures long-lasting product reliability. Maintenance must be carried out by Qualified Personnel according to the provisions of the regulations in force. -
Page 31: Technical Details
Technical Details Stella 28 Stella 28 Stella 24 C Stella 24 CI Description Thermal Capacity 24.3/11.3 24.3/11.3 Thermal power 22.6/9.9 22.6/9.9 Nominal heat output 93.0 93.0 Heat output reduced by 30% 90.4 90.4 Heat loss through the flue when burner...