Page 3 - Introduction; Risk of a dangerous situation causing serious physical injury.; Central heating; : Primary Control Unit - PCB for managing burner operation; PWM; : Pulse Wide Modulation; SCU
6.1 Installation shutdown 6.2 Frost protection 7 Checking and maintenance 7.1 Maintenance message 7.2 Preventive maintenance with automated service message 7.2.1 Resetting the automatic maintenance Message 7.2.2 Dealing with the next maintenance message and starting the new maintenance period 7.3 St...
Page 5 - Safety instructions and recommendations; Safety instructions; Trace possible leaks and seal them immediately.; Casing components; Technical description; General description; High-efficiency wall-hung condensing gas boilers; Low pollutant emissions.
2 Safety instructions and recommendations 2.1 Safety instructions WARNING: If you smell gas: 1. Do not use a naked flame, do not smoke, do not operate electrical contacts or switches ( doorbell, light, motor, lift, etc..). 2. Shut off the gas supply. 3. Open the windows. 4. Report any leaks immediat...
Page 6 - Operating principle; See chapter: “Technical specifications”,
1 Smoke nozzle / Air intake 2 Casing/air box 3 Heat exchanger (Central heating) 4 Outlet for measuring combustiongases 5 Ignition/ionization electrode 6 Mixer pipe 7 Combined venturi and gas valveunit 8 Air intake silencer 9 Instrument box 10 Siphon 11 Box for the control PCBs 12 Fan 13 Water flow p...
Page 7 - Please contact us for further information.; Technical specifications
Please contact us for further information. The calorifier can be connected to the boiler in two ways: Using a three-way valve. Using a calorifier pump. 3.3.4. Water flow rate The boiler’s modulating control system limits the maximum difference in temperature between the heating flow and return and t...
Page 8 - Installation; Regulations governing installation
4 Installation 4.1 Regulations governing installation WARNING: The engineer must be Gas Safe registered and have the correct ACS qualifications. Installation of the appliance must be done by a qualified engineer in accordance with prevailing local and national regulations. 4.2 Package list 4.2.1. St...
Page 9 - The boiler must be installed in a frost-free environment.
4.3.2. Location of the boiler Before mounting the boiler, decide on the ideal position for mounting, bearing the Directives and the dimensions of the appliance in mind. When choosing the position for mounting the boiler, bear in mind the authorised position of the combustion gas discharge outlets an...
Page 10 - Positioning the boiler; The boiler is delivered with a mounting template.
The installation must comply with BS 5540 (part 1 + 2), BS 6640 en IGUP/10. 4.3.4. Main dimensions 4.4 Positioning the boiler The boiler is delivered with a mounting template. A suspension clamp situated at the rear of the casing enables the boiler to be directly suspended on the mounting bracket. 1...
Page 11 - Hydraulic connections; Installing the boiler in existing installations; Remove sludge from the installation.
CAUTION: Using a spirit level, check that the mounting axis is perfectly horizontal. During mounting, cover up the connection points for the air supply and the combustion gas exhaust, to protect the boiler and its connections from dust. Only remove this protection at the time when these connections ...
Page 12 - Install the expansion vessel on the heating return pipe
NOTE: Suitable chemicals and their use should be discussed with specialist water treatment companies in respect to aluminium heat exchangers. 4.5.2. Connection of the heating circuit 1. Remove the anti-dust plug located on the heating outlet connection under the boiler. 2. Connect the heating water ...
Page 13 - Connections for the air and exhaust pipes
4.5.4. Connecting the condensate discharge pipe 1. Fit the condensate drain hose and the syphon of the boiler : these are supplied separately. 2. Mount a standard drainage pipe, Ø 32 mm or more, leading to the mains drainage system.3. Insert into this the hose of the condensate drain.4. Mount a trap...
Page 14 - The table specifies this classification in detail according to
NOTE: The boiler is suitable for connection to the following types of combustible gases. See chapter: “Certifications”, page 8. 4.7.1 Classification The table specifies this classification in detail according to .
Page 15 - Diameter; Coxstand E HR; The air supply opening must remain open.
Type Execution Minimum size of the duct or jacket. C93 Diameter Ø Channel (Without air- supply) Ø Channel (With air- supply) Channel (Without air- supply) Channel (With air-supply) Rigid 60 mm 110 mm 120 mm 110 × 110 mm 110 × 110 mm 80 mm 130 mm 140 mm 130 × 130 mm 130 × 130 mm 100 mm 160 mm 170 mm ...
Page 17 - Mounting; Connect the pipes together without stress between the sections.
Chimney length in the various pressure zones 100 mm 36 m 36 m 8 m 4 m - 110 mm 36 m 36 m 34 m 32 m 24 m 130 mm 36 m 36 m 36 m 36 m 36 m Reduction table Pipe reductions per element used Diameter Elbow 45° Elbow 90° Pipe reduction Pipe reduction 80 -125 mm 1 m 2 m 100 -150 mm 1 m 2 m 80 mm 1.2 m 4.0 m...
Page 18 - Electrical connections; Power supply voltage
4.8 Electrical connections 4.8.1. Control unit The boiler is not line- and neutral sensitive. The boiler is fully prewired. All external connections can be made on the connection connector (lowvoltage). The main characteristics of the control unit are described in the table below. Power supply volta...
Page 19 - Access to the connector block:
Access to the connector block: 1. Unscrew the two screws located under the front panel by a quarter turn and remove the panel.2. Guide the cables from the controller or thermostat through the round grommet(s) on the right in the boiler bottom plate.3. Tilt the control box forwards by opening the hol...
Page 24 - Only suitable for potential-free contacts.
The frost protection functions as follows where an outside sensor is used: At an outside temperature lower than -10°C (can be set with parameter ): the circulation pump switches on. At an outside temperature higher than -10°C (can be set with parameter ): the circulation pump continues to run and th...
Page 25 - RL; terminals of the connector.; Optional electrical connections
The behaviour of the input can be changed using parameter . IMPORTANT: See chapter: “Parameter descriptions”, page 56 4.8.11. Release input The boiler has a release input. This input is on the RL terminals of the connector. CAUTION: Only suitable for potential-free contacts. The behaviour of the inp...
Page 26 - Nc; and; connection must be connected to the; OpenTherm; input; OT; of the
4.9.2. Connection options for the 0-10 V control PCB (IF-01) The IF-01 control PCB can be built into the instrument box or the housing for the control PCBs. Refer to the instructions supplied with the product. CAUTION: Do not connect a frost thermostat or room thermostat to the boiler if using the 0...
Page 29 - On removing this PCB, the boiler will show fault code
Operation signal and failure signal (Status) The alarm or operation signal is selected using parameter . If the boiler is operating, the operation signal can be switched via a potential-free contact (maximum 230 VAC, 1 A) on the No and C terminals of the connector. If the boiler locks out, the alarm...
Page 31 - Pump modulation signal; Description; Electrical diagram
Connect on/off contact Connect the on/off contact of the central heating pump to the connector X1 . CAUTION: Do not use the on/off contact to interrupt the power supply to the pump. Connect central heating pump The control system of the central heating pump is connected to connector X2 . Select the ...
Page 32 - Filling the system; the volume of the pipes.
P Power supply GB Combined venturi and gasvalve unit PSU Storage parameter SCU Extended control PCB PUMP A Shunt pump OT Thermostat S On/Off switch HLS Safety thermostat OS Outside sensor FAN Fan RTS Return sensor WS DHW sensor IT Ignition transformer FTS Flow sensor PC Connecting a computer E Ignit...
Page 34 - Commissioning; Check points before commissioning; Preparatory procedure for boiler commissioning:; Check the gas circuit.
5 Commissioning 5.1 Control panel 5.1.1. Functions of the keys 5.1.2. Meaning of the symbols on the display 5.2 Check points before commissioning 5.2.1. Preparing the boiler for commissioning WARNING: Do not put the boiler into operation if the supplied gas is not in accordance with the approved gas...
Page 35 - Commissioning the boiler; See chapter: “Adapting to another gas type”,
Check the electrical connections to the thermostat and the other external controls. Check the other connections. Test the boiler at full load. Check the setting of the gas/air ratio and, if necessary, correct it. Test the boiler at part load. Check the setting of the gas/air ratio and, if necessary,...
Page 36 - RESET; Only a qualified engineer may carry out the following operations.
3. Open the gas valve on the boiler. 4. Switch on the electrical supply. 5. Turn on the boiler using the on/off switch. 6. Set the controls (thermostats, control system) so that they request heat. 7. The start-up cycle begins and cannot be interrupted. During the start-up cycle, the display shows th...
Page 40 - Reading out measured values; The following current values can be read off the information menu
5.6 Reading out measured values The automatic control unit continuously measures various boiler parameters. These parameters can be read off the boiler control panel. 5.6.1. Reading the various current values The following current values can be read off the information menu :
Page 43 - Changing the settings
5.7 Changing the settings The boiler control panel is set for the most common heating systems. With these settings, practically all heating systems operate correctly. The useror installer can optimise the parameters according to own preferences. For operation in open vented systems, several paramete...
Page 47 - Setting the maximum heat input for central heating operation
6. Change the value by pressing the [-] or [+] key. In this example using key [-] to °C. 7. Confirm the value with the key: is displayed with flashing. 8. If necessary, set other parameters by selecting them using the [-] or [+] keys. 9. Press the key 2 times to return to the current operating mode....
Page 51 - Switching off the boiler; Installation shutdown; Shut off the gas supply.; Checking and maintenance; Maintenance message; Maintenance operations must be done by a qualified engineer.
6 Switching off the boiler 6.1 Installation shutdown If the central heating system is not used for a long period, we recommend switching the boiler off. Switch the On/Off switch to Off. Shut off the gas supply. Ensure that the boiler and system are protected against frost damage. 6.2 Frost protectio...
Page 52 - Preventive maintenance with automated service message; SERVICE; Reset the maintenance message to zero after each inspection.
7.2 Preventive maintenance with automated service message When it is time to carry out maintenance on the boiler, the following instructions are shown on the display: In a yellow display: The symbol The symbol SERVICE Maintenance message , or Thanks to the automatically transmitted maintenance messa...
Page 53 - Standard inspection and maintenance operations; See chapter: “Reading the various current values”,
NOTE: After a service complete the checklist. See chapter: “Checklist for periodic inspection and maintenance”, page 87. 7.3 Standard inspection and maintenance operations CAUTION: During inspection and maintenance operations, always replace all gaskets on the parts removed. 7.3.1. Checking the hydr...
Page 57 - Remember to reconnect the connector to the fan.; Specific maintenance operations; Wipe off all traces of deposits using an abrasive cloth.
8. Use a vacuum cleaner fitted with a special endpiece (accessory) to clean the top part of the heat exchanger (combustion chamber). 9. Thoroughly clean with the vacuum cleaner again without the top cleaning brush on the endpiece. 10. Check (using a mirror, for example) whether any dust can still be...
Page 58 - Check the seals on the gas and water connections.
7.4.3. Assembling the boiler 1. Follow the procedure in reverse to re-assemble all of the components. CAUTION: During inspection and maintenance operations, always replace all gaskets on the parts removed. 2. Fill the siphon with water. 3. Put the siphon back in place. 4. Carefully open the main wat...
Page 59 - Troubleshooting; Comfort Master; The symbol; The fault code (for example; If the display does not show RESET but rather
After a service complete the checklist. See chapter: “Checklist for periodic inspection and maintenance”, page 87. 8 Troubleshooting 8.1 Error codes The boiler is fitted with an electronic regulation and control unit. The heart of the control system is a microprocessor, the Comfort Master © , which ...
Page 66 - Spare parts; Reference
9 Spare parts 9.1 General When it is observed subsequent to inspection or maintenance work that a component in the boiler needs to be replaced, use only original spare partsor recommended spare parts and equipment. Send the component to be replaced to your supplier’s Returned Goods Department if the...
Page 67 - Checklist for commissioning; Work to be undertaken for commissioning; Checklist for periodic inspection and maintenance; Inspection and/or service activities
10.1 Checklist for commissioning No. Work to be undertaken for commissioning Attachment / Measured values 1 Filling the central heating system with water and checking the water pressure 2 Fill the siphon with water 3 Vent the air in the heating system 4 Checking the water-side connections for tightn...
