GAS 210 ECO PRO - Central heating boiler Remeha - Free user manual and instructions

USER MANUAL GAS 210 ECO PRO Remeha

3.5.1 Boiler with frost protection, out of operation for a long time ......................................28

Preface Preface This user guide, which contains a lot of practical information about the Remeha Gas 210 ECO PRO, a High efficiency central heating unit, is mainly intended for end users. It contains important instructions for safe and trouble-free opera- tion of the boiler before commissioning and during operation. Read these instructions carefully before putting the boiler into operation, familiarise yourself with its control functions, operation and strictly observe the instructions given. Failure to do so may invalidate warranty or prevent the boiler from operating. The data published in these technical instructions is based on the latest information (at date of publication) and may be subject to revisions. We reserve the right to continuous development in both design and manufacture, therefore any changes to the materials or tech- nology employed may not be retrospective nor may we be obliged to adjust earlier supplies accordingly.27102015 - 114500-06

The following pictograms are used in this document to emphasise certain instructions. This is in order to increase your personal safety and to safeguard the technical reliability of the boiler. The pictograms used are: Useful advice. Important instruction for carrying out an action. Possible risk of bodily injury or material damage to boiler, building or environment. Possible risk of electrical shocks. Serious bodily injury may occur.

1.2 Important instructions

Your installer usually supplies user guidelines for the entire instal- lation. Follow at first these guidelines (if available).

Work on the boiler Installation, commissioning, maintenance and repair work may only be carried out by suitably qualified specialist installers in accordance with the applicable national and local standards and guidelines. Instruction and warning labels on the boiler must never be removed or covered and must be clearly legible throughout the entire service life of the boiler. Generally applicable safety instruc- tions related to accident prevention must be consulted in addition to the information supplied in this technical documentation.

Keep this document near to the installation.GAS 210 ECO PRO 24 27102015 - 114500-06

Adhere strictly to the specific safety instructions.

Can you smell gas? Proceed as follows: Do not smoke and avoid fire and sparks

• Donotoperateelectricalswitches

Can you smell flue or combustion gases? Proceed as follows:

• Callyourinstalleronceyouareoutsidethebuilding.

Installation location for the boiler!

• Donotstoreoruseanyflammablematerials,aggressive substance and/or aerosols near the boiler.

• Theinstallationareamustbefrost-free.

Service once a year The boiler must be inspected once a year by a qualified engineer to ensure optimum, safe operation.27102015 - 114500-06GAS 210 ECO PRO

The boiler's control panel contains four function keys, a menu key, a chimney-sweeping key, an on/off switch and a display. fig. 01 Control panel 1 = Display 5 = [Central heating temperature] or [-] key 2 = [Menu] key 6 = [+] key 3 = [Service engineers] key 7 = [enter] key or [Service] indicator 4 = [Escape] or [reset] key 8 = On/off switch The display has four positions and several symbols and provides information about the operating status of the boiler and any faults. Numbers, dots and/or letters may be shown. The symbols above the function keys indicate what the function of the relevant keys is at that moment. If no key is pressed for three minutes, the display lighting switches off and only the and symbolsaredisplayed.Pressanykey; the current boiler status and the current operating code appear on the display. This is always displayed in the event of a fault.

3.1.1 Start-up the boiler

1. First follow the guidelines that your installer supplied for the

entire installation. If not available: follow the instructions below.

2. Check the water pressure in the installation (min. 0.8 bar). Fill

3. Open the main gas cock.

4. Put the boiler control to heat demand.

5. Start the circulation pump.

6. Switch on the electrical supply to the boiler and the on/off switch

- Afterwards (depending on the operating status), the following may appear on the display: N : L (flashes):liveandnutralwiresarewronglyconnected; change wires on the 230V terminal strip! With a heat demand: 1 Boiler starts 2 Burner starts 3 Centralheatingoperation;brieflyinpartloadtheninfullload When a heat demand ceases: 5 Burner stops 6 Boiler stops 0 Stand-by mode table 01 Normal operation

fig. 02 Reading current values The current values can be read as follows:

• Pressthe key, the symbol will then flash, confirm with the key;

• Pressthe[+] key again so that 5t appears alternating with 3,theactualstatus;

• Pressthe[+] key again so that 5u appears alternating with ,theactualsubstatus;

• Pressthe[+] key again so that t1 appears, alternating with, for example, 60°C,theactualflowtemperature;

• Pressthe[+] key repeatedly so that the remaining temperatures alsoappear;

• Pressthe[+] key again so that 5p appears, alternating with, for example, 88°C,theactualinternalsetpoint;

• Pressthe[+] key again so that fl appears alternating with, for example, u,theactualionisationcurrent;

• Pressthe[+] key again until pr appears alternating and, for example, 3.0 bar, the actual water pressure (if no water pres- suresensorisconnected,--.-barappears);

• Pressthe[+] key again until p appears and, for example, 78%,theactualmodulationpercentage;

• Pressthe[+] key again, the read-out cycle starts again with 5t,etc;

• Pressthe key twice to return to the display with the current operating status.

3.3 Adjusting the boiler to the system

The boiler's control unit is set to the most common central heating systems. With these settings, practically all central heating sys- tems will work well. However, the user or the installer can optimise the parameters as he/she wishes.

3.3.1 Changing parameters at user level (without

access code) The following settings can be changed at user level: p1 = Maximum flow temperature [°C], adjustable between 20and90°C; p 2=Pumppost-circulationtime0..98mins,99iscontinuous; p 3=Boilercontrol;centralheatingon/off. 0 = Central heating off 1 = Central heating

(= factory setting) p 4 = Display 0 = Simple display 1 = Comprehensive display 2 = Display automatically goes to simple after three minutes (factory setting) The parameters can be changed at user level as follows:

1. Press the -key several times until the symbolflashesin

2. Select the users menu using the -key, p1 appears (the

3. Press the [+] -key;p2 appears (the 2 flashes);

4. Press the -key again;3 (min) appears and flashes: (factory

5. Change the value by pressing the [-] -key or the [+] -key, in this

case for example to 15 min, with the [-] -key;

6. Confirm the value with the -key, p2 appears (the 2 fla-

7. Press the - key twice, the boiler enters the current opera-

The p1 to p4 settings can be changed in the same way as p2.GAS 210 ECO PRO 28 27102015 - 114500-06

In some cases, it may be necessary to set the boiler to manual operation, for example when the controller has not yet been con- nected. The boiler can be set to automatic or manual operation under the symbol. Do this as follows:

• Pressthe -key several times until the symbolflashesin themenubar;

• Pressthe -key once, either the minimum flow temperature or AUt) (only if an external sensor has been connected) willappearinthedisplay;theflowtemperatureisdeterminedby theinternalheatingcurve;

• Pressthe[+] -key to increase this value in manual operation temporarily;

Manual operation keeps active after power breakdown. 114492LTAL21H019a fig. 04 Setting manual operation

3.5 Taking the boiler out of operation

The boiler must be switched off for maintenance or repair work. If the central heating system is not going to be used for a long time (for example, during holidays in frost-free periods), it is advisable to put the boiler out of operation.

3.5.1 Boiler with frost protection, out of operation

• Setthecontrollerlow,forexampleto10°C; The Gas 210 ECO PRO will now only come into operation to pro- tect itself against freezing(= depending on parameter 33). To prevent radiators and the system from freezing in rooms where there is a risk of frost (e.g. garage or storage room), a frost ther- mostat can be connected to the boiler. The boiler will then keep the radiators in that room warm.

This frost protection does not work if the boiler is out of operation.

3.5.2 Boiler without frost protection, out of

operation for a long time

Tap the boiler and central heating system if you are not going to use your home or the building for a long time and there is a chance of frost.27102015 - 114500-06

4. Control stops and faults

4. Control stops and faults

The boiler is fitted with an advanced control unit. The heart of the control is a microprocessor, the abc

, which both protects and controls the boiler. Before calling in the installing engineer, first check if: - the gas cock is open - the maximum operating temperature setting is high enough - the boiler control has been correctly set - the main switch is on - a sufficient water flow is possible (the radiator valves are enti- rely opened) - the water pressure is sufficient (> 0.8 bar). Note down the failure message before resetting. Reset the failure by pressing the reset-key on the instrument panel.

4.2 Control stops and faults

Control stop: The control stop is a (temporary) boiler operating mode due to an abnormal situation. The boiler switches to the neutral position so that it can return to a normal state. The display then shows the shutdown status (with code 9) again. The boiler control unit will, at first, try several times to start the boiler again. The boiler shall operate again when the causes of the control stop have been removed. Fault: If the shutdown condition still exists even after various automatic control unit start attempts have been made or if a non-reproducible phenomenon has arisen, the boiler switches to fault mode (also known as lock-out). The boiler can only resume operation if the cause of the fault is rectified and the ‘RESET button’ is pressed

4.3 Control stop codes

The boiler display will show code 9. The control stop codes can be read out as follows:

• Pushthe -key, and then the -key;

The boiler shall start automatically when the causes of the control stop have been removed. The list enumerates only control stop codes you might be able to solve by yourself. If the control stop code continues to appear after you seem to have rectified the fault, please contact your service engineer. For control stop codes not mentioned in this list also contact your service engineer.GAS 210 ECO PRO 30 27102015 - 114500-06

4. Control stops and faults

Maximum heat exchanger temperature exceeded

• Nofloworinsufficientflow during heat demand Check:

Maximum heat exchanger temperature increase exceeded

Maximum difference between heat exchanger and return temperature exceeded

• Nofloworinsufficientflow during heat demand Check:

Maximum difference between heat exchanger and flow temperature exceeded

• Nofloworinsufficientflow during heat demand Check:

Water pressure too low

• Thatthegascockisfullyopened

No flame during operation • Noionisationcurrent Check:

• That the gas cock is fully opened adjus- ted and working correctly

• Whethertheairsupplyorfluegas discharge are blocked

• Thatthegascockisfullyopened

The boiler displays the fault codes as follows: é 12 (the display shows the symbol and the fault code flashes). The meaning of the fault codes can be found in the fault table, see table 03. In the event of faults, proceed as follows:

The fault code is needed to find the cause of the fault quickly and correctly.

• Pressthe“RESET -key” for 2 seconds. If the fault code con- tinues to appear, look for the cause in the following fault table and rectify the fault.

If the display does not show RESET but SERVICE, the boiler must be switched off and switched on again after 10 seconds before the fault can be reset. The list enumerates only fault codes you might be able to solve by yourself. If the fault code continues to appear after you seem to have rectified the fault, please contact your service engineer. For fault codes not mentioned in this list also contact your service engineer.27102015 - 114500-06

4. Control stops and faults

Fault code Description Possible cause Check/solution E:04 Heat exchanger temperature exceeded below normal range

• waterpressureinthesystem E:09 Return temperature exceeded above normal range (high limit thermostat) E:10 E:11 Too great a difference between heat exchanger and return tem- perature

• trapisblocked E:14 5 failed burner starts

= 0%, dry) ppm < 35 Central heating side High limit temperature °C 110 Operating temperature range °C 20 - 90 Minimum water working pressure bar 0.8 Maximum water working pressure PMS bar 6 Water content litres 12 16 20 24 Electrical Mains voltage V/Hz 230/50 Input power (without pump) min Watt 4 4 4 4 max Watt 125 193 206 317 Insulation class IP 20 Other Weight excluding water kg 115 135 165 188 Environment temperature °C 0 - 40 Noise level at a distance of 1 m from the boiler (enclosed version) dB(A) ≤59 Colour of casing RAL 2002 (red)/7037 (grey) table 04 Technical data

10. Boiler heath exchanger sensor 20. Mixing tube 30. Facility for built-in weather compensator

The inlet side of the fan is fitted with a venturi, where air and gas are mixed according to a fixed ratio. When there is a heat demand, the fan will pre-vent. The fan draws in the combustion air, which is mixed with the gas to optimum effect in the venturi. The fan moves the homogenous gas/air mixture through to the burner. The mixture is then ignited by the combined ignition and ionisation electrode, which also monitors the flame. Combustion then takes place. Following combustion, the hot flue gases pass through the cast aluminium heat exchanger. Here, the flue gases release their heat to the heating water in the heat exchanger. The heat output of the boiler is controlled on the basis of the settings and the pre- vailing water temperatures that are measured by the temperature sensors. With flue gas temperatures below dew point (approx. 55°, the temperature at which the water vapour in the flue gases starts to condense), the water vapour in the flue gases will condense in the lower part of the heat exchanger. The heat released during this condensation process (called latent heat or heat of condensation) is also transferred to the heating water. The condensed water is discharged through a trap. The flue gases flow through the con- densate collector and are discharged via the flue gas discharge pipe. The advanced control system of the boiler, the abc

, guaran- tees extremely reliable heat supplies. This means that the boiler responds quickly and efficiently to negative environmental influ- ences (such as hydraulic flow problems, air flow problems, etc.). If problems of this kind occur, the boiler will not lock out, but initially modulate down and, depending on the nature of the problem, switch off temporarily (shutdown or control stop) and try again after a pre-determined time. Providing the situation is not hazard- ous, the boiler will always continue to attempt to provide heat. For a continuous supply of heat, the boiler requires a minimum flow of 30 % of the nominal water flow at the relevant design tempera- tures. The boiler can be equipped with a second return (available as an accessory). The second return can contribute additional effi- ciency if the installation includes different temperature groups.

5.3 Operating principle

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