Great Britain
120579-130711
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer's instructions by competent persons and that it meets the requirements of the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference. Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.
The Remeha Avanta is a series of wall mounted high-efficiency fully condensing central heating boilers, for open vented systems.
These technical instructions contain useful and important information for the correct installation, operation and maintenance of the Remeha Avanta boiler.
Read these instructions carefully before putting the boiler into
operation, familiarise yourself with their control functions and
operation, strictly observing the instructions given. Failure to
do so may invalidate warranty or prevent the boiler from
operating correctly.
The installation, commissioning, Inspection and servicing of the boiler must be carried out by a competent registered Engineer who holds valid ACS certification and in accordance with current gas safety (installation and use) regulations, the building regulations and all other relevant codes of practice.
All electrical work must be carried out by a competent Engineer and to be installed in accordance with the current IEE regulations.
It is the responsibility of the installer to ensure that all flue systems are installed in accordance with manufacturers instructions and all the requirements of EN 14471.
fig. 01 Remeha Avanta
59970LTGBW7H046
On commissioning the certificate in the Benchmark Checklist
within the installation + service manual must be completed and
left on site with a copy send on to Remeha for registration purposes.
If you have any questions, require an engineer to call on site, or if you need more information about specific subjects relating to this boiler, or it's installation please do not hesitate to contact our technical help line 0118 974 3070.
When contacting Remeha with a problem on the boiler please have available the boiler type, Serial No (located on the
bottom of the casing), and the symptoms or fault code (the
fault code is a series of flashing red digits in the display panel).
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 technology employed may not be retrospective nor may we be obliged to adjust earlier supplies accordingly.
The following pictograms are used in this Installation and Service manual to specifically draw certain points to your attention:
|
Tip |
|
Useful tip or practical advice. |
|
Indication |
|
Important instruction in carrying out a particular operation. |
|
Warning |
|
Possible danger of personal injury or material damage to the regulator, building or environment. |
|
Danger |
|
Serious personal injury can occur because of risk of electric shocks. |
Observe the appropriate safety measures, as given in these instructions.
Can you smell gas? What to do:
Warning! If the leak is before the gas meter, alert your gas supplier, TRANSCO, tel. 0800 111 999.
Can you smell smoke or flue gasses? What to do:
Under the Gas Safety (Installation & Use) Regulations 1998, the Remeha Avanta, in common with all gas appliances, must be installed by a competent person in accordance with that regulation.
Statutory regulations, in any country, cannot be overridden by any of the notes or instructions from the manufacturer. Compliance with National Standards does not provide any degree of immunity from legal obligations. In the UK, the installation must be in accordance with the national and local norms and requirements.
For any issues or circumstances not addressed within these instructions, please call our After Sales Department 0844 879 7690.
|
Remeha Avanta OV - |
PIN: 0063BQ3009
|
Classification type for evacuation of the combustion products; according EN 483: see par. 8.1.
Health and safety information
The standard delivery of the Remeha Avanta boiler includes:
| - the boiler + mounting bracket;
- nylon plugs and screws for fixing mounting bracket; - gas cock with gasket + 90° gas pipe ( 22 mm); - olives and nuts; - spacers; - cable glands; - Wiring diagrams; - Warranty Leaflet (The terms and conditions of the warranty are included in the warranty leaflet, on installation of the boiler please fill in the registration card and return to Remeha); - Installation and Service manual, Quick reference card and Mounting Template. |
This Installation and Service manual deals with the standard supplied boiler only. For the installation or assembly of any optional accessories supplied with the boiler, such as stand off frame, pipe work kits, cover plate, control kits, etc, please refer to the Assembly Instructions supplied with these accessories.
fig. 02 Scope of delivery
59970.LT.GB.W7H.006
Packed in the box with the Remeha Avanta box is this Installation and Service manual. Read instructions and remarks carefully. This section includes the guidelines and instructions for the connection of gas, water, electricity, safety devices, the regulator, control unit, flue discharge and air supply.
The gas connection is located on the bottom of the boiler whilst the water connections, air inlet and flue gas outlet are located on the top of the boiler. The boiler is supplied as standard with gas pipe work tails.
For installation, servicing and inspection min. 600 mm in front of the boiler is required. If this free space is obtained by opening a door or removing a panel, the boiler may be installed for instance in a closed cupboard. All servicing / inspection / repairs are made from the front of the boiler.
For ease of installation we recommend clearances of 0.5 cm at the side so that the unit is easy to open, with a free space of 25 cm under the appliance and 25 cm above the appliance, as the minimum requirement.
However once installed, it is possible to reduce these clearances to 22 cm at the top, and 25 cm at the bottom provided the boiler front panel can be removed and the isolating valves are easily accessible without the use of tools.
fig. 03 Clearance requirements
59970LTGBW7H047
Clearances shown are for ease of installation - once fitted it is
possible to enclose the boiler in a cupboard with 25 mm clearances
around the casing provided a door is included to allow
the front cover to be removed completely for maintenance and
allowance is made to access the gas valve and flow / return
connections.
 |
Return connection Ø22 mm |
 |
Flow connection Ø22 mm |
 |
Gas connection Ø22 mm |
 |
Combustion air inlet Ø100 mm (concentric) |
 |
Flue duct Ø60 mm (concentric) |
 |
Condensate drain connection ¾" (standard overflow pipe size) |
fig. 04 Dimensions and connection points of the Remeha Avanta
59970.LT.GB.W7H.001
fig. 05 Mounting the Avanta
59970.LT.GB.W7H.002
The central heating system should not require a bypass, unless all radiators are fitted with TRV's or when the system controls could allow the boiler and pump to operate when there is no flow. Where a bypass has to be fitted, the bypass must be placed at least 1.5 metres away from the boiler.
The 'abc®' control also monitors the temperature difference across the flow and return connections and the rate of temperature rise and will automatically regulate the boiler output to ensure that it remains operational for as long as possible without the need to 'lock out' requiring a manual reset.
The system pump must be wired directly to the boiler terminal strip and be capable of providing the nominal flow at design conditions against the combined resistance of the boiler and system.
|
Required water flow at ∆T = 15°C and 11°C |
||||
|
Type |
∆T 15 |
°C |
∆T |
11°C |
|
m3/h |
l/s |
m3/h |
l/s |
|
|
12v |
0,7 |
0,19 |
0,91 |
0,25 |
|
15v |
0,88 |
0,24 |
1,14 |
0,32 |
|
18v |
1,05 |
0,29 |
1,37 |
0,38 |
|
24v |
1,41 |
0,39 |
1,82 |
0,51 |
|
30v |
1,76 |
0,49 |
2,28 |
0,63 |
fig. 06 Pressure loss graph
T002539-A
The feed and expansion tank must be situated at a minimum height of 1 metre and a maximum height of 30 metres above the boiler to provide the correct operating head pressure.
The cold feed must be at least 15 mm and the open vent must be at least 22 mm. The pipes must rise continuously from the system. The heating vent must be at least 450 mm above the water level in the feed and expansion cistern. The pump should be fitted on the flow pipe from the boiler and have isolating valves each side.
If the Avanta is installed on a sealed system, an appropriately sized expansion vessel and a safety valve MUST be installed close to the inlet side of the pump. A mains filling loop MUST be installed close to the outlet side of the system pump, along with automatic air vents positioned in the system pipe work to ensure adequate system venting during filling and operation. An adequate pressure gauge should be fitted in a position where it can be seen during filling of the system. All in accordance with the current issue of the relevant British Standards.
fig. 07 Open-Vented system
59970.LT.GB.W7H.004
If used correctly water treatment can improve the boilers efficiency and increase the anticipated life expectancy of the boiler. For further information a special document "Quality requirements CH water" is available from Remeha. As most systems contain a variety of metals, it is considered good practice to provide some form of water treatment in order to prevent or reduce the following:
All scale deposits however small will reduce the efficiency of
the boiler and should be prevented.
Suitable chemicals and their use should be discussed with a specialist water treatment company prior to carrying out any work (environmental aspects, health aspects). The specification of the system and manufacturers recommendations must be taken into account, along with the age and condition of the system. New systems should be flushed thoroughly to BS 7593 (1992) to remove all traces of flux, debris, grease and metal swarf generated during installation. Care to be taken with old systems to ensure any black metallic iron oxide sludge and other corrosive residues are removed, again by power flushing, ensuring that the system is drained completely from all low points.
Please ensure that the new boiler plant is not in circuit when
the flushing takes place, especially if cleansing chemicals are
used to assist the process.
It is important to check the inhibitor concentration after installation, system modifications, filling the system and every service in accordance with these instructions.
For the correct dosage and the suitability of inhibitors for use with our boilers and for further information on water treatment or system cleaning we advise direct contact with either of the following companies:
|
'F1®' manufactured by:
or: Sentinal 'X100®' manufactured by: |
A pressure relief safety valve is not needed for Open-Vented systems.
Drain points must be provided at all the low points of the system to ensure that the entire system can be completely drained. The boiler is provided with a drain in the return pipe.
at the top of the boiler.
fig. 08 Connecting CH return
59970.LT.GB.W7H.005
at the top of the boiler.
fig. 09 Connecting CH flow
59970.LT.GB.W7H.007
to a suitable
waste water drain point using acid resisting pipe work
(i.e. - ¾" overflow). To enable the siphon in the boiler to be
removed / serviced, the connection should not be a permanent
one (i.e. "push fit" system or a "tundish" immediately below the boiler).
fig. 10 Connecting condensate drain
59970.LT.GB.W7H.034
Before installation, check that the gas meter has sufficient
capacity for the demand. Remember to consider the
consumption of all household appliances.
The Avanta boiler is suitable for both natural gas and propane firing. For propane a kit with restrictor is required. The boiler is supplied as standard set for natural gas (G20), therefore the following procedure must be carried out BEFORE the boilers are fired and commissioned for the first time on propane:
| - Fit restrictor (not included with boiler)
- Adjust the fan speed (see par. 2.10.8) and adjust the gas/air ratio (see par. 2.10.3). |
at the bottom of the boiler.
fig. 11 Connecting gas supply
59970.LT.GB.W7H.035
The Remeha Avanta is only suitable for room sealed operation with a standard concentric connection 60/100 mm Ø or the optional 80/125 mm Ø connection. Detailed recommendations for air supply and flue terminals are given in BS 5440. It should not be necessary to provide compartment ventilation when the boiler is used with a standard concentric flue.
The flue terminal must be located with care to ensure that the products of combustion are dispersed properly in all weather conditions and cause minimum nuisance to the building user or any adjacent buildings. If the terminal is positioned less than 2 m above the ground, balcony, or flat roof where access by persons is possible a suitable guard must be employed.
The boiler will produce a water vapour plume during normal
operation. Positions for the Remeha Avanta are shown in the figure and
table 02.
The principle of the 1:1 gas valve ensures the Avanta range is able to deliver it's full output at inlet pressure down to 17 mbar. However if dynamic pressure below 19 mbar are experienced ensure this is adequate for ALL other gas appliances in the property.
fig. 12 Flue terminal positions
R000150-A
|
Dimensions |
Terminal location |
Minimum distance
|
|
A |
Directly below an opening, air brick, opening window, etc. |
300 mm |
|
B |
Above an opening, air brick, opening window, etc. |
300 mm |
|
C |
Horizontally to an opening, air brick, opening window, etc. |
300 mm |
|
D |
Below a gutter or sanitary pipe work |
75 mm |
|
E |
Below the eaves |
200 mm |
|
F |
Below a balcony or carport roof |
200 mm |
|
G |
Above ground, roof or balcony level |
300 mm |
|
H |
From vertical drain/soil pipe work |
150 mm |
|
J |
From an internal or external corner |
300 mm |
|
K |
From a surface or boundary facing the terminal |
1500 mm |
|
L |
Vertically from a terminal on same wall |
1500 mm |
|
M |
Horizontally from a terminal on same wall |
300 mm |
|
N |
From a terminal facing the terminal |
1200 mm |
|
P |
From an opening in a carport (e.g. door, window) into the building |
1200 mm |
|
R |
From a vertical structure on the roof |
n/a |
|
S |
Above an intersection with the roof |
300 mm |
table 02 Minimum distances to terminal
n/a = not applicable.
See table 03 for the maximum pipe length of flue ducts and air supply pipes for this 'room sealed' application.
It is not necessary to provide combustion air to the room or internal space in which the boiler is installed.
|
|
Diameter in mm Ø |
M&G material |
|
|
60/100 |
80/125 |
||
|
Maximum length 'L' allowed [m] |
8 |
34 |
|
|
Eq. Length of 90° elbow
|
1.4 |
||
|
Eq. Length of 45° elbow
|
0.65 |
||
table 03 Maximum pipe lengths for flue duct and air supply in room sealed application
For flue installations not covered by this booklet, please
contact our Technical Enquires: 0118 974 3070.
fig. 13 Connecting flue terminal and air supply
59970LTGBW7H010
When the switch spur is on the following components of this
appliance can be live (230 V):
fig. 14 Electrical components with live 230 V
59970LTGBW7H011
The Remeha Avanta has an electronic regulation and control unit with an integrated ionisation flame detector. The heart of the boiler control unit is a microprocessor, the 'abc®', which controls and protects the boiler.
The maximum rated input of the boiler is 150 W. The boiler is fully pre-wired internally, all external connections can be made using the terminal strips X5 - X7 - X9 and 230 V input (X2 terminal ). See the diagram for the position of the connectors and fuse (F2) on the control unit. The most important properties of the control unit are summarized in table 04.
fig. 15 The control unit
LTALW7H000023
|
Manufacturer |
Sit Controls |
|
Supply voltage |
230 V - 1ph - 50 Hz |
|
Pre-purge time |
3 s |
|
Post-purge time |
5 s |
|
Ignition time |
2.5 s |
|
Safety time |
5 s |
|
Anti-cycling time |
3 till 10 min. |
|
Fuse value F1 (230 V) |
2 AT |
|
DC fan |
24 VDC |
table 04 Control unit characteristics
Any loads other than those specified above are only allowed
if an isolating transformer is used.
The output of the Remeha Avanta can be controlled in the following ways:
Isolate
power supply at the fused spur before carrying out any work on the boiler
controls.
fig. 16 Connecting external controls
R000158-A
|
 |
NOTE: Terminal blocks are not in line as shown - diagramatic only
fig. 17 Boiler External Connection terminal details
R000159-A
The Remeha Avanta can be connected to a 2-wire on/off thermostat, such as the Remeha Celcia 10.
If a room thermostat with an anticipation resistor is being used, parameter [P][5] should be changed from [0] to [1], see par.2.10.8.
fig. 18 Wiring diagram on/off control
R000152-B
When the switch spur is on, the terminal strip X2 will be live
(230 V).
For this option to function correctly, a link or room control
must be fitted between connectors 7 and 8 of X9 terminal strip
(remove existing link before use).
If the 230 V supply for the external time clock is not taken from
the boiler - terminal block X2 connections 4 & 5, it must be
taken from the same phase as the boiler 230 V supply and
correct polarities observed.
fig. 19 Wiring diagram for an external 230 V time clock
R000162-A
With an externally mounted simple 230 V switching time clock connected to connectors on X2 terminal strip and a qSense connected to connectors 7 and 8 of X9 terminal strip (remove existing link), the Remeha Avanta will provide room compensated heating and time control over CH and DHW.
An OpenTherm® room modulating control (qSense) used in conjunction with a simple external 230 V time clock will provide
easy to set up and operate - timed room compensation
heating.
The Remeha Avanta has an OpenTherm® interface. This enables our modulating range of OpenTherm® room controls (e.g. the Remeha qSense or iSense) to be connected without any further modifications.
If the DHW water temperature on the OpenTherm® control can be adjusted, then the Remeha Avanta will supply water at the temperature determined at the OpenTherm® with the maximum being set in the boiler. OpenTherm® is an industry standard modulating control available from several control manufacturers.
fig. 20 Wiring diagram modulating regulator
R000153-B
The Remeha Avanta can therefore be controlled directly by any other controls with this OpenTherm® logo 
An outside temperature sensor can be connected to connectors 1 and 2 of the X9 terminal strip. The boiler will regulate the output using the set point of the internal heat curve. This can be set as follows:
| - Outside temperature minimum set point = -15°C (adjustable
with parameter [P][2][9] to between 0 and -30°C). - Outside temperature maximum set point = 20°C (adjustable with parameter [P][2][8] to between 0 and 40°C). - Flow temperature set point at maximum outside temperature = 20°C (adjustable with parameter [P][2][7] to between 0 and 60°C). - Flow temperature set point at minimum outside temperature = 20°C ([P][1] Adjustable between 20-85°C but the highest water temperature setting for this type of boilers is limited to 75°C, see par 2.10.8.) |
An outside sensor used in conjunction with a simple 230 V
time clock will provide easy to set up and operate - timed
weather compensation heating based on the graph below.
fig. 21 Wiring diagram outside temperature sensor
R000154-B
fig. 22 Heat curve Remeha Avanta
LTALW7H000030
If an external DHW calorifier is being used with the Avanta system boiler a DHW control sensor or volt-free thermostat can be connected to connectors 3 and 4 of the X9 terminal strip. The control will automatically detect whether a sensor or a thermostat has been connected.
fig. 23 Wiring diagram DHW calorifier sensor or thermostat
R000194-A
If required a 230 V DIVERTING three-way valve can be connected to terminal X5 of the control unit. When used in conjunction with an "Open Therm" compensator the DHW-production operates with priority.
Connector X5-1 for N (neutral), connector X5-2 for "open valve to DHW" (port A of three-way valve) and connector X5-3 for "open valve to CH" (port B of three-way valve)
If port A is connected to heating and port B to hot water X5-3
should be used to enable DHW.
The cable must be fed through the boiler's casing by means of the supplied cable gland and run trough the cable clamp on the right-hand inside of the boiler.
fig. 24 Wiring diagram three-way valve
R000160-A
The boiler must be installed in a frost-free area to prevent the condensate drain from freezing. However if the temperature of the CH water in the boiler drops too low, the integrated boiler protection device is activated as follows:
| - at a water temperature below 7°C: the circulation pump is
switched on;
- at a water temperature below 3°C: the boiler is switched on; - when the water temperature is above 10°C: the boiler is switched off and the circulation pump runs for another 15 minutes. |
fig. 25 Wiring diagram for frost thermostat
R000155-B
If a 230 V switching time clock is connected to terminal strip
X2, the frost thermostat wired as indicated (on connectors 7
and 8 of the X9 terminal strip) it will not bring the boiler on if
the time clock is in the OFF position. In these cases the frost
stat must be connected in parallel with the time clock on connectors
1 and 4 of the X2 terminal strip (frost stat contacts to
close on temperature fall).
• A frost thermostat should preferably be installed in rooms with a high frost risk.
• Connect the frost thermostat in parallel to the room thermostat - connectors 7 and 8 of the X9 terminal strip (remove existing link between connectors 7 and 8 before use).
• The integrated boiler protection described above will not provide complete system or fabric protection.
• When a iSense control has been fitted to connectors 7 and 8 on X9 (see par. 2.7.4) an outside sensor as detailed in par. 2.7.5) must be used to provide system and building fabric frost protection.
• If a frost thermostat is connected parallel to the iSense on connectors 7 and 8 on X9, when the frost thermostat calls for heat (contact closed) it will override the iSense control and cause an error message (OT ERROR) flashes in the display and the boiler will operate continuously to achieve the flow set point.
The Remeha Avanta is supplied with an external interlock function. A volt free switching device (i.e. external gas pressure switch, safety thermostat for under floor heating) can be connected to connectors 5 and 6 of the X9 terminal strip after removing the existing link. When this circuit is open the boiler will shut down with the display showing (code [9]) and will restart when the circuit is closed.
fig. 26 Wiring diagram for an external interlock
R000195-A
As standard the boiler is supplied with 3 volt free connectors on terminal X7. They can be used for an external gas valve, remote alarm and boiler run indication.
• Common alarm signal connect to connectors 1 and 2 on terminal X7. Contact closes on lock out. For this purpose set parameter [2][4] from [0] to [1].
• Boiler run signal connect to connectors 1 and 3 on terminal X7. Contact closes on heat demand. For this purpose set parameter [2][4] from [0] to [2].
• Connect an external gas valve to connectors 1 and 3 on terminal X7. Contact closes when the gas valve is activated. For this purpose set parameter [2][4] from [0] to [3].
• Connect an external pump relay* to connectors 1 and 3 on terminal X7. Contact closes on heat demand. For this purpose set parameter [2][4] from [0] to [4].
* Never connect a pump directly to connectors 1 and 3 on
terminal X7, but only via a relay.
fig. 27 Connecting remote alarm
R000196-A
Using the optional Recom interface package a PC or PDA can be connected to the X10 "telephone connector". Using the Recom PDA service software you can load, change and download various boiler settings and readings. See the user instructions supplied with the software/hardware.
Not all PDA will run the Recom software - check with Remeha before buying a unit.
fig. 28 X10 socket connector
LTALW7H000035
Connect the system pump to terminal X4 (X4-1 and X4-2) of the control unit. The pump's earth connection must be connected to the control unit's earth connection with an AMP-connector (supplied with boiler). The cable must be fed through the boiler's casing by means of the supplied cable gland and run trough the cable clamp on the right-hand inside of the boiler.
fig. 29 Connecting external pump
R000161-A
fig. 30 Wiring diagram
R000163-A
The control panel of the Remeha Avanta has 4 function keys and a LED display. The function keys are used to read or change the settings and temperatures.
|
1
|
=
|
display
|
fig. 31 Control Panel
LTALW7H000036
The display has two positions and displays information on the current operating status of the boiler and any errors. Numbers, dots and/or letters can appear in the display.
If no key is pressed for longer than three minutes with the "boiler in stand-by mode", only one dot is lit. With the "boiler operating", two dots are displayed (Factory default).
The boiler must not be put into operation with a different type
of gas without reference to par. 2.4.2
At the time of commissioning, complete all relevant sections of the Benchmark Checklist located on the inside back of this document.
fig. 32 Benchmark checklist
T002019
This section details the procedure for putting the boiler into operation. There are 7 stages to the procedure:
fig. 33 Isolating power
59970LTGBW7H036
Open the valves on all the radiators connected to the central
heating system before filling the system with water.
Avoid water getting into the boiler.
fig. 34 Open the valves
59970LTGBW7H014
fig. 35 Measurement point c on the gas block
59970LTGBW7H037
fig. 36 Check electrical connections and thermostat
R000164-A
fig. 37 Power on and controls on heat demand
R000165-A
The Avanta boilers are suitable for both natural gas and propane firing (restrictor required for propane not supplied). The boilers are supplied as standard set for natural gas (G20), therefore the following procedure must be carried out BEFORE the boilers are fired and commissioned for the first time on propane:
| - fit restrictor (instructions supplied);
- adjust the fan speed (for procedure see par. 2.10.8, for values see table 06 and table 08); - adjust the gas/air ratio (for values see table 06 and table 08). |
fig. 38 Check the gas/air ratio control - set to full load - gas/air ratio adjustment A on gas block
59970LTGBW7H017
|
Setting values O2 /CO2 for natural gas |
|||
|
Boiler type |
Fan speed (rpm) |
O2 |
CO2 |
|
Full load [H][3] * |
% |
% |
|
|
12v |
approx. 2400 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
15v |
approx. 3000 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
18v |
approx. 3500 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
24v |
approx. 4500 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
30v |
approx. 5200 |
5.2 ± 0.1 |
8.8 ± 0.1 |
table 05 Setting values full load CO2 and O2 (front panel not fitted)
|
Setting values O2 /CO2 for LPG (propane) |
|||
|
Boiler type |
Fan speed (rpm) |
O2 |
CO2 |
|
Full load [H][3] * |
% |
% |
|
|
12v |
approx. 2400 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
15v |
approx. 2800 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
18v |
approx. 3300 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
24v |
approx. 4300 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
30v |
approx. 5000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
table 06 Setting values full load CO2 and O2 (front panel not fitted)
* On forced full load, the 2nd digit indicates the operating code
Only make small adjustments to the adjusting screw,
maximum 1/8 turns when setting O2 /CO2
Ensure that the analysing probe has a gas tight seal in the
sampling point with the probe end in the centre of the flue
duct.
|
Setting values O2 /CO2 for natural gas |
|||
|
Boiler type |
Fan speed (rpm) |
O2 |
CO2 |
|
Part load [L][3] * |
% |
% |
|
|
12v |
approx. 1300 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
15v |
approx. 1300 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
18v |
approx. 1300 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
24v |
approx. 1300 |
5.2 ± 0.1 |
8.8 ± 0.1 |
|
30v |
approx. 1300 |
5.2 ± 0.1 |
8.8 ± 0.1 |
table 07 Setting values part load CO2 and O2(front panel not fitted)
|
Setting values O2 /CO2 for LPG (propane) |
|||
|
Boiler type |
Fan speed (rpm) |
O2 |
CO2 |
|
Part load [L][3] * |
% |
% |
|
|
12v |
approx. 2000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
15v |
approx. 2000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
18v |
approx. 2000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
24v |
approx. 2000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
|
30v |
approx. 2000 |
5.1 ± 0.1 |
10.3 ± 0.1 |
table 08 Setting values part load CO2 and O2 (front panel not fitted)
* On forced part load, the 2nd digit indicates the operating code.
fig. 39 Check the gas/air ratio control - set to part load - gas/air ratio adjustment B on gas block
59970LTGBW7H018
Set boiler to part load: Press the [enter]-key until [L][3] appears in the display, part load has been set.
Check the flame through the sight glass which should be stable with a regular orange distribution. Once the unit has been set to part load, the 'test at full load' should be repeated.
Only make
small adjustments of the adjusting screw, maximum 1/8 turns when setting O2 /CO2
Ensure that the analysing probe has a gas tight seal in the
sampling point with the probe end in the centre of the flue
duct.
Repeat the 'test at full load' and 'test at part load' as often as necessary until the correct values are achieved without further adjustments
Following a manual override the boiler will return to normal
operating mode if no keys are pressed for 15 minutes.
The boiler is now ready for operation.
The Remeha Avanta is delivered pre-tested and operating parameters set up with standard factory settings to suit the
most common systems. These setting can be adjusted to suit
specific site conditions but must not be changed without
reference to Remeha or one of our approved contractors
fig. 40 Preparing boiler for use
59970LTGBW7H019
It is the responsibility of the installer as part of the commissioning procedure to instruct the user in the day to day operation of the boiler and controls fitted to the system and to hand over the completed Benchmark Checklist at the back of this manual.
fig. 41 Instructing the user
59970LTGBW7H020
| - A display test will briefly appear showing all segments
of the display:
[F]: [X][X]software version; [P]: [X][X] parameter version; - A venting cycle of 3 minutes now follows, the version numbers will be displayed alternately; - Next, the following will appear in the display: :[0] stand-by mode |
| - 230 V main supply available to switch spur;
- switch spur fuse; - cable and connections between the switched spur and the boiler control unit; - fuse on the boiler control unit (F2 = 2AT, 230V). |
[E][1][0], (the display alternately shows an [E] and a number e.g. [1][0]). The meaning of this error codes can be found in the error table, see Chapter 4.
• Resolve the error first if possible.
• Press the [reset]-key and hold for at least 1 second to restart the boiler.
After any error [E][1], [E][2], [E][7], [E][1][0] or [E][1][3] ; the 3 minute venting cycle will run first before starting the boiler.
• Checking CH function;
| - Ensure the time control is in the CH on position
- Set the room thermostat on a high demanding temperature and, the display shows: [1] pre-purge stage; [2] Ignition stage; [3] operating in CH mode. - Set the room thermostat back to a lower temperature (no more heat demand), the display shows; [5] waiting-time; 3 to 10 minutes (only when flow temperature has already been reached and heating demand is still existing); [1] pre-purge stage; [6] pump run on after CH or DHW is satisfied; [0] stand-by mode. |
The following settings can be read out in the 'user menu':
| -
[t][1] = flow temperature [°C];
- [t][2] = return temperature [°C]; - [t][3] = calorifier temperature [°C]; - [t][4] = outside temperature [°C]; - [F][L] = ionisation current [µA]; - [F] = fan speed [rpm]; |
fig. 42 Read out settings
LT.AL.W7H.000.046
The operating parameters of the Remeha Avanta have been factory set to suit most systems. However it is possible to adjust some of the parameters to enable the Remeha Avanta to operate more efficiently to match specific system designs and site conditions. These parameters are split into two specific sections:
How to change the parameters at user level can be read on
the "Short reference card" provided and therefore will not be
detailed in this Installation and Service manual.
To avoid non authorised adjustments, some parameter settings can only be changed once the special access code [1][2] has been entered. This code may only be used by qualified installers.
The following settings can be changed at user and service level:
| Codes in display | Description | Setting range and notes where applicable |
Factory settings |
|||||
| 12v | 15v | 18v | 24v |
30v |
||||
 |
[P][1] |
Tset flow |
20 - 85°C |
75°C 6) |
||||
|
[P][2] |
Tset DHW |
40 - 65°C |
55°C |
|||||
|
[P][3] |
Boiler regulation |
0 = CHoff and DHWoff
|
2 |
|||||
|
[P][4] |
Eco or comfort setting |
0 = comfort setting
|
2 |
|||||
|
[P][5] |
Anticipated current |
0 = no anticipated current for thermostat on/off
|
0 |
|||||
|
[P][6] |
Display off automatically |
0 = display stays off
|
2 |
|||||
 |
[P][1][7] |
Maximum fan speed CH (natural gas) |
Do not change 3) |
24 1) | 30 1) | 35 1) | 45 1) |
52 1) |
|
Maximum fan speed CH (propane) |
Adjustments for Propane firing |
24 1) | 28 1) | 33 1) | 43 1) |
50 1) |
||
|
[P][1][8] |
Maximum fan speed DHW (natural gas) |
Do not change 3) |
24 1) | 30 1) | 35 1) | 45 1) |
52 1) |
|
|
Maximum fan speed DHW (propane) |
Adjustments for Propane firing |
24 1) | 28 1) | 33 1) | 43 1) |
50 1) |
||
|
[P][1][9] |
Minimum fan speed (CH and DHW) (natural gas) |
Do not change 3) |
13 |
|||||
|
Minimum fan speed (CH and DHW) (propane) |
Adjustments for propane firing |
20 1) |
||||||
|
Codes in display |
Description |
Setting range and notes where applicable |
Factory settings |
|||||
| 12v | 15v | 18v | 24v |
30v |
||||
|
|
[P][2][0] |
Starting fan speed |
Do not change |
25 | 25 | 25 | 28 |
28 |
|
[P][2][1] |
Pump setting CH |
Do not change |
0 |
|||||
|
[P][2][2] |
Pump running time after CH |
1 - 99 minutes |
2 |
|||||
|
[P][2][3] |
Connection with Heat Recovery Unit (HRU) |
0 = no connection with HRU |
0 |
|||||
|
[P][2][4] |
State remote alarm
|
0 = off
|
0 |
|||||
|
[P][2][5] |
Legionella protection |
0 = off
|
0 |
|||||
|
[P][2][6] |
DHW cut-in temperature |
2 - 15°C |
5 5) |
|||||
|
[P][2][7] |
Heat curve set point flow temperature |
0 - 60°C |
20 |
|||||
|
[P][2][8] |
Heat curve set point outside temperature (min) |
0 - 30°C |
20 |
|||||
|
[P][2][9] |
Heat curve set point outside temperature (max) |
-40 - 0°C |
- 15 4) |
|||||
|
[P][3][0] |
Boiler type |
Do not change |
3 |
|||||
|
[P][3][1] |
Set point augmentation calorifier |
0 - 20°C |
15 5) |
|||||
|
[P][d][F] |
Restore factory settings |
On identification plate [d][F] setting X is shown. |
X |
|||||
|
On identification plate [d][U] setting Y is shown. |
Y |
|||||||
table 09 Settings at service level
| 1) Do not exceed this value.
2) The boiler in combination with an external calorifier will not warm up the calorifier in the Eco-mode. 3) Only change for propane firing. 4) "Minus" character is not shown in display. 5) Only in combination with a calorifier with a DHW sensor. 6) [P][1] Adjustable between 20 - 85°C but the highest water temperature setting for this type of boilers is limited to 75°C. |
Changing the factory settings could result in the boiler not
working properly.
The parameters can be changed from the stand-by status as follows:
• Press the [enter]-key and briefly the [reset]-key until codes [C] and [0] appear alternately in the display;
• Press the [+]-key until access code [1][2] is displayed;
• Press the [enter]-key until [P][1] appears (codes [P] and [1] are displayed alternately);
• This parameter can now be changed as follows;
• Press the [enter]-key; the set value for the maximum flow temperature now appears e.g.; [7][5] (75°C);
• Press the [+] or [-] key to change this value, for example to [6][5] (65°C);
• Press [enter]-key to confirm the value; codes [P] and [1] are displayed alternately;
• Press the [+]-key to change the next parameter, etc;
• Press [reset]-key to return to the operating mode.
fig. 43 Change parameters in service level
LT.AL.W7H.000.047
The boiler will automatically return to the normal operating
mode if no keys are pressed for 10 minutes.
The maximum output for CH operation can be changed with parameter [P][1][7] (maximum fan speed) and is set standard to a speed of 2400, 3000, 3500, 4500 or 5200 rpm for the five System-types. See the speed-input ratio figures.
This parameter can be changed from the stand-by status as follows:
• Press the [enter]-key and briefly the [reset]-key until codes [C] and [0] appear alternately in the display;
• Press the [+]-key until access code [1][2] is displayed;
• Press the [enter]-key until [P][1] appears (codes [P] and [1] are displayed alternately);
• Press the [+]-key to go to parameter [1][7];
• Press the [enter]-key until [P][1][7] appears (codes [P] and [1][7] are displayed alternately);
• Press the [+] or [-] key to change this value for Avanta 18v, for example to [3][5] (3500 rpm corresponds with 18kW);
• Press [enter]-key to confirm the value;
• Press [reset]-key to return to the operating mode.
fig. 44 Change boiler output
LT.AL.W7H.000.048
fig. 45 Fan speed / boiler input ratio Avanta 12V, 15V and 18V
T001103
fig. 46 Fan speed / boiler input ratio Avanta 24V and 30V
T001104
The factory settings can be restored in the service level as follows:
1. After parameter [P][3][1] has shown, press the [+]-key; [d][F] and [X][X] appear alternately;
2. Press ←-key; [X][X] appears;
3. Read boiler identification plate for value of [d][F]; press [+] or [-] key to reach this value;
4. Press ←-key to confirm; [d][U] and [Y][Y] appear alternately;
5. Read boiler identification plate for value of [d][U]; press [+] or [-] key to reach this value;
6. Press ←-key to confirm; boiler restarts with original factory settings.
fig. 47 Restore factory settings
LT.AL.W7H.000.052
The boiler must be switched off and allowed to cool down before any maintenance or repairs are carried out. If the central heating system is not going to be used for a long time (during the holidays, forn instance, or frost-free periods) it is advisable to put the boiler out of operation.
Now the boiler will only start working to protect itself against freezing. With external frost protection, the boiler can also prevent the central heating system from freezing.
Drain the boiler and central heating system if you will not be
using the home for a long period and there is a chance of
night frost.
The Remeha Avanta is practically maintenance free but should be inspected annually.
If during the annual inspection the flue gas analysis indicates
that the values are outside the figures given in table 10, maintenance
work should be carried out as described in par. 3.2.
Also carry out maintenance if the ionisation read-out value is lower than 3 or higher than 9µA, or when the flame core is not correct.
Only Remeha spare parts/materials should be used. All service and maintenance must be carried out by a qualified Engineer with the relevant training and certification (i.e. ACS - IEE registrations etc).
The annual inspection of the Remeha Avanta can be limited to the following checks:
| - check the flue pipes and air supply pipes for leaks, see
par. 3.1.1;
- check and clean (if necessary) the condensate siphon, see par. 3.1.2; - check the ionisation/ignition electrode and change if necessary, see par. 3.1.3; - check the combustion and flame pattern, see par. 3.1.4; - fill in the Benchmark Service Record on the inside back pages of this document. |
fig. 48 Annual inspection
59970LTGBW7H022
fig. 49 Checking flue pipes
59970LTGBW7H023
fig. 50 Checking the condensate siphon
59970LTGBW7H0234
- deposits (remove any white deposits with abrasive cloth);
- the adjustment of the ignition electrode (between 3 and 4mm);
- the quality of the gasket and condition of the porcelain (this should not be cracked) inspect and replace if necessary;
If the read-out value is lower than 3 or higher than 9µA, check cable and connections are sound if OK replace the ignition electrode.
The ignition cap is fixed on the ignition electrode and therefore
cannot be removed.
fig. 51 Checking the ignition electrode
59970LTGBW7H026
Do this as follows:
| - heat the water temperature in the boiler to approx. 70°C;
- unscrew the top of the flue gas point of measurement; - measure the O2 /CO2 percentage and compare this to the check values in table 10. |
fig. 52 Checking the combustion
59970LTGBW7H025
Ensure that the analysing probe has a gas tight seal in the sampling point with the probe end in the centre of the flue duct.
|
Checking values O2 /CO2 for natural gas |
||||
|
Boiler- |
Fan speed (rpm) |
O2 |
CO2 |
|
|
Full load [H][3] |
Part load [L][3] |
% |
% |
|
|
12v |
approx. 2400 |
approx. 1300 |
5.2 ± 0.2 |
8.8 ± 0.3 |
|
15v |
approx. 3000 |
approx. 1300 |
5.2 ± 0.2 |
8.8 ± 0.3 |
|
18v |
approx. 3500 |
approx. 1300 |
5.2 ± 0.2 |
8.8 ± 0.3 |
|
24v |
approx. 4500 |
approx. 1300 |
5.2 ± 0.2 |
8.8 ± 0.3 |
|
30v |
approx. 5200 |
approx. 1300 |
5.2 ± 0.2 |
8.8 ± 0.3 |
table 10 Checking values O2 /CO2 (front panel not fitted)
|
Checking values O2 /CO2 for LPG (propane) |
||||
|
Boiler- |
Fan speed (rpm) |
O2 |
CO2 |
|
|
Full load [H][3] |
Part load [L][3] |
% |
% |
|
|
12v |
approx. 2400 |
approx. 2000 |
5.1 ± 0.2 |
10.3 ± 0.3 |
|
15v |
approx. 2800 |
approx. 2000 |
5.1 ± 0.2 |
10.3 ± 0.3 |
|
18v |
approx. 3300 |
approx. 2000 |
5.1 ± 0.2 |
10.3 ± 0.3 |
|
24v |
approx. 4300 |
approx. 2000 |
5.1 ± 0.2 |
10.3 ± 0.3 |
|
30v |
approx. 5000 |
approx. 2000 |
5.1 ± 0.2 |
10.3 ± 0.3 |
table 11 Checking values O2 /CO2 (front panel not fitted)
The O2 /CO2 - values in table 10 and table 11 are
checking values. For setting values see
table 05 - table 08
If the flue gas analysis readings are within the values in table 09 the boiler combustion is correct. However, if the readings are outside the given values, then adjust the gas air ratio control to the given values, see table 05 - table 08 in par.2.10.3.
If the adjustments cannot achieve the mentioned values, the boiler will require a full service please refer to the maintenance instructions in par. 3.2.
After servicing, complete the relevant Service Interval Record section of the Benchmark Checklist located on the inside back pages of this document.
fig. 53 Benchmark checklist
T002020
To conduct maintenance:
Isolate power supply at the fused spur before carrying out any
work on the boiler.
fig. 54 Open the boiler
59970LTGBW7H038
fig. 55 Maintenance of the electrode
59970LTGBW7H027
fig. 56 Dismantling the front plate of the heat exchanger
59970LTGBW7H028
fig. 57 Checking the burner
59970LTGBW7H029
fig. 58 Maintenance to the heat exchanger
59970LTGBW7H030
Fill in the Benchmark Service Record on the inside back pages of this document, after conducting any maintenance.
fig. 59 Assembling the boiler
59970LTGBW7H031
The Remeha Avanta has an advanced control unit. The heart of this control unit is a microprocessor, the abc®-control which both controls and protects the boiler. If an error is detected anywhere in the boiler, it will lock out and an error code will appear in the display.
The Remeha Avanta displays the error codes as follows: [E][2] (the display alternately shows an [E] and a number e.g. [2]). The meaning of the various error codes can be found in the error table, see table 12.
How to deal with errors:
• Make a note of the displayed error code.
The error code is important for the correct and swift detection
of the nature of the error and for possible support from our
technical help line 0118 974 3070.
|
Error code |
Description |
Possible cause |
Check / solution |
|
[E][0] |
Flow or return sensor fault. |
Short circuit in the flow,
return or |
Check the wiring and the connections of the sensors visually: are
|
|
Defective or not (properly)
connected flow, return or boiler temperature sensor. |
Check that the sensors are working; take the sensors out* and
|
||
|
[E][1] |
Flow temperature is
|
Insufficient water. |
Check the water level and check for leaks. |
|
No through flow. |
Check that the pump is working; turn the spindle with a screwdriver,
|
||
|
Too much air in the system. |
Vent the system. |
||
|
Deviation in the flow or return temperature sensor. |
Check that the sensors are working; take the sensors out* and
|
||
|
[E][2] |
Return temperature
is |
Insufficient water. |
Check the water level and check for leaks. |
|
No through flow. |
Check that the pump is working; turn the spindle with a screwdriver,
|
||
|
Too much air in the system. |
Vent the system. |
||
|
Sensors not wired correctly. |
Check the wiring between sensors and control unit. |
||
|
Pump operating in wrong direction. |
Check wiring from and to control unit. |
||
|
Flow and return connections crossed. |
Flow and return connections. |
||
|
Deviation in the flow or return temperature sensor. |
Check that the sensors are working; take the sensors out* and
|
|
Error code |
Description |
Possible cause |
Check / solution |
|
[E][3] |
Control unit or earth fault. |
Mains supply not correctly
earthed.
|
Check that the power supply from the switch spur is properly
earthed; |
|
[E][4] |
More than 5 start
attempts |
No ignition spark. |
Check:
|
|
A spark but no flame. |
Check that:
|
||
|
There is a flame but no, or
insufficient ionisation |
Check:
|
||
|
[E][5] |
No ionisation or ionisation
|
CO2 wrongly adjusted. |
Check:
|
|
[E][6] |
Unwanted flame formation. |
Ignition Unit. |
Faulty ignition unit, replace ignition unit. |
|
Control unit. |
Faulty control unit, replace control unit. |
||
|
[E][7] |
No water in the
boiler or the pump |
Insufficient water. |
Check the water level and check for leaks. |
|
No through flow. |
Check that the pump is working; turn the spindle with a screwdriver,
|
||
|
Too much air in the system. |
Vent the system. |
||
|
Pump operating in wrong direction. |
Check wiring from and to control unit. |
||
|
Pump not running. |
Check wiring, connections and pump. |
||
|
[E][8] |
Fan fault. |
Fan is not working. |
Check:
|
|
Fan does not stop. |
Check:
|
|
Error code |
Description |
Possible cause |
Check / solution |
|
[E][9] |
No water in the
boiler or the pump
|
Insufficient water in central heating system |
Check the minimum water pressure, read off the gauge and check
for leaks |
|
Refill the central heating system |
|||
|
Bleed the central heating system |
|||
|
Reset boiler |
|||
|
Failure water pressure switch |
Contact installer |
||
|
[E][1][0] |
No through flow
during venting
|
Insufficient water. |
Check the water level and check for leaks. |
|
Too much air in the system. |
Vent the system. |
||
|
No through flow. |
|
||
|
[E][1][1] |
Air box temperature to high. |
Air leakage from heat exchanger to air box. |
Check:
|
|
[E][1][3] |
Heat-exchanger
fuse protection has
|
Heat exchanger faulty. |
Check wiring between heat exchanger fuse. |
|
Insufficient water. |
Check the water level and check for leaks. |
||
|
No through flow. |
Check that the pump is working; turn the spindle with a screwdriver,
|
||
|
[E][4][3] |
Parameter limits. |
Automation settings. |
Replace [d][F] / [d][U] settings, see
par. 2.10.10. |
|
[E][4][4] |
Parameter check. |
Automation settings. |
Replace [d][F] / [d][U] settings, see
par. 2.10.10. |
|
[E][4][5] |
Default parameters. |
Automation settings. |
Replace boiler control unit. |
table 12 Error codes
* When sensors have been taken out, be sure to replace them max. 40 mm underneath heat exchanger.
If you read out a not listed error, please report to Remeha.
The code [d][8], [d][5] or [d][9] can appear in the display.
Every 10 minutes the boiler will try to restart until the cause
has been removed.
• Code [d][9] is a lock-out and can appear in the following situation:
- the shut down input (between terminals 5 and 6 on X9) has been activated (= opened).
The lock-out will disappear once the cause has been removed!
The Remeha Avanta control unit has an error code memory, in which the last 16 errors are stored. In addition to the error code ([E] and a number [X][X]).
• The following data is also stored:
| - the number of times the error occurred (n and a number
xx).
- the operating status of the boiler (5t and a number xx). - the flow temperature (t1 and the value xx) return temperature (t2 and the value xx) at the time the error occurred. |
To get access to the error memory, access code must be entered.
fig. 60 Sensor resistance graph raph
Sensor resistance
| - first error code [E] with error number e.g.
[1][2]; - then status code [S][t] with status number e.g. [3] (burning for central heating); - then number of time that the error has occurred [n] and a number e.g. [3]; - then the flow temperature when the error occurred [t][1] and temperature e.g. [7][5]; - final the return temperature when the error occurred [t][2] and temperature e.g. [6][0]; |
This cycle continues to repeat itself.
fig. 61 Error read outs
LT.AL.W7H.000.064
The last message in the list, Er followed by cl will appear in the display;
When tracing an error, the cause can often be found more
quickly if the operating status at the time the error occurred
can be retrieved from the error memory.
If, following the annual inspection or maintenance any part of the boiler is found to need replacing, use Remeha spare parts only or spare parts and materials recommended by Remeha.
If any component is to be replaced and it is covered by the terms and condition as described in the warranty leaflet return the faulty component to Remeha with the details as shown in table 13.
table 13 Return form example
* These details can be found on the boiler type plate; the type plate is stuck to the bottom of the boiler.
fig. 62 Exploded view Remeha Avanta
59970EVGBW7H010
|
Break down parts kit |
||
|
Part No |
Description |
Position |
|
S100006 |
Heat exchanger 12v, 15v, 18v |
2001 |
|
S100014 |
Heat exchanger 24v, 30v |
2001 |
|
S62741 |
Burner 12v, 15v, 18v |
2003 |
|
S100017 |
Burner 24v, 30v |
2003 |
|
S62743 |
Electrode ignition/ionisation |
2004 |
|
S59118 |
Glass inspection set |
2005 |
|
S100015 |
Siphon assembly |
2021 |
|
S58733 |
Sensor temperature (2 pcs) |
2023 |
|
S100011 |
Fan assembly |
3001 |
|
S58685 |
Gas combination block |
3005 |
|
S101057 |
Control board |
4001 |
|
S59128 |
Display print board |
4002 |
|
S100012 |
Transformer ignition |
4003 |
|
S43561 |
Fuse glass 2 amp slow (10pcs) |
4006 |
table 14 Break down parts kit
The boiler meets the requirements of the EC regulations at the following directives:
| - 90/396EEC Gas appliances directive
- 92/42/EEC Efficiency directive - 2006/95/EEC Electrical low voltage directive - 2004/108/EEC EMC directive - 97/23/EEC Pressure equipment directive (art. 3, sub. 3) |
Classification type for evacuation of the combustion products; according EN 483
Before it leaves the factory, each Remeha Avanta boiler is optimally adjusted and tested for:
| - Electrical safety;
- CO2- adjustment; - Hot water function; - Water tightness; - Gas tightness; - Automation parameters. |
In addition to the regulations and guidelines as mentioned in par. 7.1 the following guidelines in this documentation should also be observed.
It applies for all regulations and guidelines, mentioned in this Installation and Service manual, that any additions or new regulations and guidelines at the time of installation will also apply.
|
Appliance type Remeha Avanta |
12v |
15v |
18v |
24v |
30v |
|
|
General |
||||||
|
Gas council number |
- |
41-288-09 |
41-288-13 |
41-288-06 |
41-288-10 |
41-288-14 |
|
Boiler control |
|
modulating or on /off |
||||
|
Nominal output Pn (80/60°C, CH) |
kW |
12.1 |
15.0 |
17.6 |
23.5 |
29.4 |
|
Nominal output Pn (50/30°C, CH) |
kW |
12.8 |
15.8 |
19.0 |
25.0 |
31.3 |
|
Nominal input Qn (Hi) |
kW |
5.8 - 12.3 |
5.8 - 15.3 |
5.8 - 18.0 |
6.1 - 25.2 |
6.1 - 30.0 |
|
Nominal input Qnw (Hi) |
kW |
12.3 |
15.3 |
18.0 |
25.2 |
30.0 |
|
Assembly dry weight |
kg |
20 |
20 |
20 |
21.5 |
21.5 |
|
Noise level at distance of 1m from the boiler (at full load) |
dB(A) |
< 44=""> |
||||
|
Gas and flue details |
||||||
|
Classification due to discharging flue gases |
- |
B23, B33, C13, C33, C43, C53, C63, C83 |
||||
|
Gas type permitted |
- |
II ( 2H3P natural gas and propane) |
||||
|
Gas inlet pressure natural gas |
mbar |
20 - 25 |
||||
|
Gas consumption natural gas (maximum) |
m3/h n |
1.3 |
1.6 |
1.8 |
2.7 |
3.2 |
|
Gas flue rate |
kg/h |
20.5 |
25.8 |
31.0 |
42.4 |
50.5 |
|
Gas inlet pressure propane |
mbar |
37 - 50 |
||||
|
Gas consumption propane (maximum) |
m3/h n |
0.5 |
0.6 |
0.7 |
1.0 |
1.2 |
|
NOx Class 2) |
- |
5 1) |
||||
|
NOx annual emission (n = 1) |
ppm |
< 30=""> |
||||
|
mg/kWh |
< 53=""> |
|||||
|
Residual fan duty (full load) |
Pa |
30 |
35 |
40 |
50 |
100 |
|
CH side |
||||||
|
Water capacity (heat exchanger and piping) |
l |
1.8 |
1.8 |
1.8 |
2.0 |
2.0 |
|
Minimum operating water pressure |
bar |
0.1 |
||||
|
Maximum operating water pressure PMS |
bar |
3 |
||||
|
Water temperature (maximum) |
°C |
98 |
||||
|
Operating temperature (maximum) |
°C |
75 |
||||
|
Water pressure loss ∆T = 11°C |
mbar |
220 |
330 |
450 |
630 |
970 |
|
Electrical |
||||||
|
Main supply |
V/Hz |
230 / 50 |
||||
|
Power consumption W (maximum) |
W |
50 |
50 |
50 |
115 |
115 |
|
Power consumption W (in stand-by status) |
W |
< 3=""> |
||||
|
Degree of protection |
IP |
X4D |
||||
table 15 Summary of technical data
| 1) Measured according EN 483 (Class 5 complies with a limited concentration of
NOx < 70 mg/kWh). 2) This data applies for natural gas. |
fig. 63 Components of the Remeha Avanta
59970LTGBW7H045
|
1.
|
Flue / Air inlet connection
|
The Remeha Avanta casing serves as a sealed air box, with air drawn in by the fan. On the outlet side of the fan is a venturi, into which a measured quantity of gas is injected based on the volume of air available. The fan speed control is dependent on the settings of the external control, the advanced boiler controller 'abc®' and the prevailing temperatures (measured by the temperature sensors).
This method of gas/air ratio control ensures that the gas quantity is precisely adjusted to the air quantity. Thus creating optimum combustion over the whole heat input range. The gas and air is mixed in the venturi and then passes into the specially designed pre-mix burner. After combustion, the hot flue gas is directed through a specially designed, high efficiency helicoil stainless steel heat exchanger with a large surface area, and transfers its heat to the system water circulating around the coils. In the condensing part of the exchanger the water vapour in the flue gas condense within it and the heat released during this process (the so-called latent or condensing heat) is also transferred to the system water. The condensate water so formed is discharged from the heat exchanger via a siphon.
In normal operation, the boiler's flue gas discharge will produce
a visible white condensing "plume" and therefore care
should be taken when choosing a location for the terminal.
The Remeha Avanta is a fully modulating boiler and can be regulated using one or more of the following methods:
An intelligent advanced boiler control ('abc®') continuously monitors the boiler conditions and ensures a very reliable supply of heat. This control system is adept at dealing with negative influences from the system such as flow reduction, airflow problems and alike. In the event of such influences, the boiler will not go to "lock-out" failure mode, but will in the first instance modulate back, and if necessary, depending on the nature of the circumstances, will temporarily switch off (shutdown or control stop), and then after a short while simply try again.
Provided that the situation is not actually hazardous, the
Remeha Avanta will always try to supply heat. The 'abc®'- control prevents unnecessary additional call outs.
The Remeha Avanta is fitted with an electronic temperature regulator with flow and return temperature sensors. The flow temperature can be set to between 20 and 75°C, see par.2.10.8 (factory setting 75°C.
The boiler modulates it's output up and down to match the flow set point from internal or external control. When the boiler is at it's at minimum output and the flow temperature still continues to rise, once the flow set point is exceeded by 5°C the boiler will shut down on a controlled stop (code [8]).
The Remeha Avanta has a low-water protection based on temperature readings. By modulating down as soon as there is a risk of an insufficient water flow, the boiler will keep working for as long as possible. An insufficient water flow, however caused, - indicated by a flow/return ∆T > 22°C or a rate of rise in the flow temperature > 1°C/sec - will be sensed by the 'abc®' control which will shut the boiler down in a blocking mode with the display showing (code [9]) for 10 minutes and before re starting.
If there is no water in the boiler or if the pump is not running, it will go to lock out (code [E][7]) and require manual re-set.
If the flow temperature exceeds 98°C the high limit temperature protection device switches off the boiler in a lock out mode with the display showing (code [E][1]). This mode will require a manual re-set.
When the fault is corrected, the boiler can be restarted by pressing the [reset]-key on the control panel and holding for 3 seconds.
108.7 % in relation to Hi at a load of 30% and a return temperature of 30°C.
98 % in relation to Hi at full load and an average water temperature of 70°C (80/60°C).
94.3 % in relation to Hi at full load and an average water temperature of 40°C (50/30°C).
page 62
page 63
|
Remeha - PART OF BDR THERMEA |
|
After Sales Tel: 0844 879 7690
|
|
Internet: www.remehaheating.co.uk |
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All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations
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