REMEHA Avanta Plus 35c, Avanta Plus 28c, Avanta Plus 39c, Avanta Plus 24s Installation And Service Manual

1
• Remeha Avanta Plus 28c
• Remeha Avanta Plus 35c
• Remeha Avanta Plus 39c
• Remeha Avanta Plus 24s
Remeha Avanta Plus
Installation and service manual
Remeha Avanta Plus
2
Remeha Avanta Plus
1 SAFETY 5
1.1 General safety 5
1.2 Safety during assembly and installation 5
1.3 Safety during installation, inspection and maintenance 5
2 INSTALLATION 7
2.1 Scope of delivery 7
2.2 Mounting the boiler 7
2.2.1 Clearance requirements 7
2.2.2 Dimensions and connection points. 8
2.2.3 Mounting the Remeha Avanta Plus 10
2.3 Water-side connections 10
2.3.1 Water fl ow 10
2.3.2 Circulation pumps 11
2.3.3 Additional guidelines for the domestic and CH water 11
2.3.4 Water treatment 11
2.3.5 Safety valve discharge 12
2.3.6 Expansion vessel 13
2.3.7 Connecting DHW pipes (Combi-type only) 13
2.3.8 Connecting the ‘CH return’ 14
2.3.9 Connecting ‘CH fl ow’ 14
2.3.10 Connecting condensate drain 15
2.3.11 Connecting under fl oor heating 15
2.4 Gas-side connections 15
2.4.1 Additional guidelines for gas connections 15
2.4.2 Connecting the gas supply 16
2.5 Flue terminal and air supply connections 16
2.5.1 Flue terminal positions 16
2.5.2 Room sealed fl ue 17
2.5.3 Connecting the fl ue terminal and air supply 18
2.6 Electrical connection 19
2.6.1 The control unit 19
2.7 Connecting external controls 20
2.7.1 On/off control – room temperature (volt free switching) 22
2.7.2 Time control using an internal or external 230 V clock 23
2.7.3 Connecting a 230 V time clock in combination with a modulating room control 23
2.7.4 Modulating control – room or outside compensation 23
2.7.5 Connecting an outside temperature sensor 24
2.7.6 Connecting the DHW sensor/thermostat 25
2.7.7 Connecting a frost protection device 25
2.7.8 Connecting an external interlock 26
2.7.9 Connecting remote alarm and boiler run indication 26
2.7.10 Connecting a PC/PDA 26
2.8 Wiring diagram 27
2.9 Commissioning 27
2.9.1 Control Panel 27
2.9.2 Additional guidelines for commissioning 27
2.9.3 Putting the boiler into operation 27
2.9.4 Normal start-up procedure 33
2.9.5 Error during the start-up procedure 33
2.9.7 Adjust the boiler according to the system 35
2.9.8 Changing the parameters at service level (with access code) 35
2.9.9 Changing the maximum output (Hi) for CH operation 37
2.9.10 Restore factory settings 39
3
2.10 Putting the boiler out of operation 39
2.10.1 Boiler with frost protection, during longer periods of non-use 39
2.10.2 Boiler without frost protection, during longer periods of non-use 39
3 INSPECTION AND MAINTENANCE 40
3.1 Inspection 40
3.1.1 Checking the water pressure 41
3.1.2 Checking the fl ue pipes and air supply pipes for leaks 41
3.1.3 Checking the condensate siphon 42
3.1.4 Checking the ignition electrode 42
3.1.5 Checking the combustion 42
3.2 Maintenance 43
4 ERRORS 49
4.1 General 49
4.2 Error codes 49
4.3 Control stop or shut down 51
4.4 Error memory 51
4.4.1 Error read outs 52
4.4.2 Deleting errors 52
5 SERVICE PARTS 53
5.1 General 53
6 EC DECLARATION 56
7 REGULATIONS 57
7.1 EC regulations 57
7.2 Remeha factory test 57
8 TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE 58
8.1 Technical data 58
8.2 The boiler components 59
8.3 Working principle 59
8.3.1 Regulating 60
8.3.2 Advanced boiler control (‘abc
®
’-control) 60
8.3.3 Regulating the water temperature 61
8.3.4 Low fl ow / water protection 61
8.3.5 High Limit temperature protection 61
9 EFFICIENCY DATA AND GAS EFFICIENCY LABELS 62
9.1 Annual effi ciency 62
9.2 Water-side effi ciency 62
4
Remeha Avanta Plus
INTRODUCTION
The Remeha Avanta Plus is a series of high-efficiency fully condensing central heating boilers, for wall mounting, available in the following types:
Remeha Avanta Plus 28c, 35c and 39c
- with integrated domestic hot water system (Combi-type)
Remeha Avanta Plus 24s
- without integrated domestic hot water system (System-type)
LT.AL.W7H.000.001
These technical instructions contain useful and important infor­mation for the correct installation, operation and maintenance of the Remeha Avanta Plus combi and system boilers.
o
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 Corgi registered engi­neer who holds valid ACOPS 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.
o
On commissioning the certificate in the Boiler Service Log book (supplied with the boiler) must be completed and left on site with a copy send on to Broag Ltd 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 978 3434.
o
When contacting Broag 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.
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1 SAFETY
1.1 General safety
The following pictograms are used in this Installation and Serv­ice manual to specifically draw certain points to your attention:
Tip o Useful tip or practical advice. Indication z Important instruction in carrying out a
particular operation.
Warning m 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.
1.2 Safety during assembly and installation
Observe the appropriate safety measures, as given in these instructions.
m
Can you smell gas? What to do:
do not smoke and do not create any flame or sparks;
do not use any electric switches;
turn off the gas tap;
open windows and doors;
trace possible leaks and seal them.
Warning! If the leak is before the gas meter, alert your gas supplier, TRANSCO, tel. 0800 111 999
m
Can you smell smoke or flue gasses? What to do:
isolate power supply.
open windows and doors;
trace possible leaks and seal them.
1.3 Safety during installation, inspection and maintenance
Under the current Gas Safety (Installation & Use) Regulations, the Remeha Avanta Plus, 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 Customer Care Department.
6
Remeha Avanta Plus
The Remeha Avanta Plus (combi and system) is a WRAS
(Water regulations) approved product.
LT.AL.W7H.000.074
Remeha Avanta Plus (combi and system) - PIN: 0063BQ3009 Gas Council numbers: Remeha Avanta Plus 28c: 47-673-02
Remeha Avanta Plus 35c : 47-673-03 Remeha Avanta Plus 39c: 47-673-04 Remeha Avanta Plus 24s: 41-288-05
Classification type for evacuation of the combustion products; according EN 483: see Par. 8.1.
Health and safety information
The weight of the Avanta Plus system and combi boilers exceed the maximum lift weight for one person.
All sealants and gaskets are free from harmful products. On
first firing the boiler, a smell from the sealants and gaskets may be present and should cease after a short period.
7
400
min.600
3
00
min. 250
min.
2
50
670
2 INSTALLATION
2.1 Scope of delivery
The standard delivery of the Remeha Avanta Plus boiler includes:
LT.AL.W7H.000.011
- the boiler (including pressure gauge and safety valve);
- mounting plate (including isolation valve set and washers);
- nylon plugs and screws for fixing mounting plate;
- copper tails 15/22 mm;
- mounting template;
- filling loop;
- Boiler Service Log Book;
- Installation and Service manual and Users guide.
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, pipework kits, cover plate, control kits, etc, please refer to the Assembly Instructions supplied with these accessories.
2.2 Mounting the boiler
Packed in the box with the Remeha Avanta Plus 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.
2.2.1 Clearance requirements
The gas and water connections are located on the bottom of the boiler whilst the air in and flue gas outlet is located on the top of the boiler. The boiler is supplied as standard with pipe­work tails to allow connections facing downwards. Optional stand off frame and pipework kits are available to enable the pipework to run upwards behind the boiler if required. 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. We do recommend a side clearance of 0.5 cm 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.
LT.AL.W7H.000.003
8
Remeha Avanta Plus
System-type
Return connection Ø 22 mm Flow connection Ø 22 mm Gas connection Ø 22 mm Combustion air inlet Ø 100 mm (concentric) Flue duct Ø 60 mm (concentric) Condensate drain connection ¾”
(standard overflow pipe size)
º Connection safety valve Ø 15 mm
2.2.2 Dimensions and connection points.
LT.AL.W7H.000.005
9
Combi-type
Return connection Ø 22 mm Flow connection Ø 22 mm Gas connection Ø 22 mm Combustion air inlet Ø 100 mm (concentric) Flue duct Ø 60 mm (concentric) DHW inlet (cold) connection Ø 15 mm ¢ DHW outlet (hot) connection Ø 15 mm Condensate drain connection ¾”
(standard overflow pipe size)
º Connection safety valve Ø 15 mm z
Based on the guidelines and the required installation space, determine where to mount the Remeha Avanta Plus.
In determining the boiler position, consider carefully the flue outlet position and any pluming consequences.
LT.AL.W7H.000.002
10
Remeha Avanta Plus
2.2.3 Mounting the Remeha Avanta Plus
LT.AL.W7H.000.012
Remove the mounting plate and template from the box.
Using the template determine and mark the position of the
three mounting holes and center line of flue, making sure the plate is absolutely level.
Drill the (Ø 10 mm) holes.
Fit the (Ø 10 mm) plugs.
Fit (Ø 8 mm) screws into the plugs.
Check the mounting plate is level and tighten the screws.
Fit the valve set to the mounting plate.
Fit fibre washers on the CH valves.
Remove boiler from the box and suspend it on mounting
plate.
Connect the valves to the boiler remembering to fit fibre washers supplied.
Connect the supplied copper tails to the isolating valves.
m
The boiler should be mounted on a suitable vertical wall
which is able to support the weight of the boiler.
The boiler should be mounted in a room which, even during
severe cold weather, remains frost-free.
If the boiler is to be installed in a timber framed building,
please refer to British Gas publication: ‘Guide for Gas Installations in Timber frame Housing’, reference DM2.
In a new installation it is possible to fit just the wall plate and
valve set to enable the system pipework to be completed and tested before fitting the boiler at a later date (place fibre washers supplied in a safe place for use when fitting the boiler).
z
Make sure the boiler and any open connections are
protected from building etc. dust during the installation.
There must be a 3 amp fused switched spur within 1m of
the boiler.
Provision must be made for the condensate discharge.
2.3 Water-side connections
2.3.1 Water flow
An internal automatic flow by-pass is supplied in the Avanta Plus to ensure correct operation on systems fitted with TRV’s on all heat emitters. 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 re-set.
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Residual head UPR 15-60
0
100
200
300
400
500
600
0 200 400 600 800 1000 1200
CH-flow [l/h]
Residualhead[mbar]
dT 20°C 18kW
Pump 'high'
Pump 'low'
Residual head UPR 15-70
0
100
200
300
400
500
600
700
0 200 400 600 800 1000 1200 1400 1600
CH- flow [l/h]
Residual head [mbar]
Pump 'high'
Pump 'low'
dT 20°C 28kW
2.3.2 Circulation pumps
The Remeha Avanta Plus 24s and 28c are fitted with the Grundfos UPR 15-60 and the Avanta Plus 35c and 39c with the UPR 15-70, two-speed circulation pumps. The control unit ensures that when the hot-water function is active, the pump runs at ‘high’. The factory setting of the pump for CH func­tion is ‘low.’ If necessary, the service installer can adjust this to ‘high’ by switching parameter 21 (from 0 to 1) see par.
2.9.8.
LT.AL.W7H.000.013
LT.AL.W7H.000.014
2.3.3 Additional guidelines for the domestic and CH water
The system should be filled with mains cold water (for the UK this will usually have a pH of between 7 and 8).
Power flush the pipes and radiators thoroughly to remove all fluxes and debris before connecting the boiler to the cen­tral heating system in accordance with BS 7593 (1992).
m
The temperature of the central heating pipes and the
radiators can rise to 95°C.
Use untreated tap water only to fill the CH system.
The pH value of the system water must be between 6 and 9.
In case inhibitors are being used, please follow the
instructions given in par. 2.3.4.
2.3.4 Water treatment
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 Broag.
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:
Metallic corrosion
Formation of scale and sludge
Microbiological contamination
Chemical changes in the untreated system water
m
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.
12
Remeha Avanta Plus
z
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:
‘Copal
®
manufactured by:
Fernox, Cookson Electronics Forsyth Road Sheerwater Woking Surrey GU21 5RZ Tel No: 01483 793200 Fax No: 01483 793201 Email: sales@fernox.com Web site: www.fernox.com
or:
Sentinal ‘X100
®
manufactured by:
BetzDearborn Ltd Sentinal Foundry Lane Widnes Cheshire WA8 8UD Tel No: 0151 424 5351 Fax No: 0151 420 5447
2.3.5 Safety valve discharge
A pressure relief safety valve is fitted in the boiler set to the maximum operating pressure of the boiler at 3 bar. If the pressure in the boiler becomes too high the pressure is relieved by releasing water outside via the safety valve dis­charge pipe. The safety valve discharge pipe must be at least 15 mm Ø. The discharge should be terminated facing down­wards exterior to the building in a position where discharging water will not create danger or nuisance but remains in a vis­ible position.
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2.3.6 Expansion vessel
An 8 litre expansion vessel (with the vessel charge set to 1.0 bar) is fitted as standard within the boiler case and is suitable for use in a heating system with a water content up to 100 litres, operating at a flow temperature of 80°C, a maximum pressure of 3 bar and a maximum system static head of 5 metres above the boiler. If the system water content is greater than 100 litres, or the system static head above the boiler is greater than 5 m, an additional vessel must be installed in the system to allow for the increase in expansion, see table 01.
m
Install additional vessel according BS 5449, part1.
Boiler Safety Valve Setting
(Bar) 3.0
Vessel Charge (Bar) 0.5 1 1.5
Heating System Water Content
(Litres)
Expansion Vessel Size
(Litres)
100 4.8 8.0 13.3 125 6.0 10.0 16.6 150 7.2 12.0 20.0 175 8.4 14.0 23.3 200 9.6 16.0 26.6 250 12.0 20.0 33.3 300 14.4 24.0 39.9
For other system volumes,
multiply the system volume
by the factor across:
0.048 0.080 0.133
table 01 Expansion Vessel Size
2.3.7 Connecting DHW pipes (Combi-type only)
LT.AL.W7H.000.015
Fit the outlet pipe for hot water to the DHW outlet ¢ 15 mm
Ø connection.
Fit the inlet pipe for cold water to the DHW inlet 15 mm
Ø connection.
z
The DHW pipes must be connected in accordance with
current regulations.
For plastic pipes, follow the manufacturer’s instructions
(for connection).
14
Remeha Avanta Plus
2.3.8 Connecting the ‘CH return’
LT.AL.W7H.000.016
Fit the inlet pipe for CH water to the ‘CH return’ 22 mm
Ø connection.
o
The Remeha Avanta Plus has a drain cock built into the return isolating valve It is considered good practice to install an air separator / dirt removal device in the return to the boiler.
2.3.9 Connecting ‘CH flow’
LT.AL.W7H.000.017
Fit the outlet pipe for CH water to the ‘CH flow’ 22 mm
Ø connection.
o
The Remeha Avanta Plus has a drain cock built into the flow isolating valve.
15
2.3.10 Connecting condensate drain
LT.AL.W7H.000.018
Connect the condensate drain outlet 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).
To prevent the risk of freezing connect the condensate into an internal vertical soil pipe using a tundish (air break) c/w a min 75 mm water seal trap.
If the condensate pipe has to run externally make sure this is done by realizing the shortest possible route, and increase the diameter to at least 1¼” or insulate it with weather resistant insulation.
The drain should slope at least 3 cm per meter, with a maxi­mum horizontal length of 5 m.
z
If connecting into an internal discharge branch (i.e. sink
waste etc) the connection must be down stream of the existing waste trap.
Fill the boiler siphon with water before operation, to prevent
flue gasses discharging into the room.
The condensate drain must be connected in accordance
with current regulations.
2.3.11 Connecting under floor heating
The Remeha Avanta Plus can be connected directly to an under floor heating system. If plastic pipes have been used they must be made oxygen dif­fusion proof in compliance with DIN 4726/4729. When installing under floor heating with a separate pump, the layout should be such that the under floor heating pump can­not cause a flow to the boiler if there is no heat demand. A low loss header should therefore be fitted between the system and the boiler.
z
Please ensure that the residual pump duty of the boiler is sufficient for the resistance of the under floor system. If not a low loss header should be used to separate the boiler from the under floor circuit to allow a separate pump sized for the resistance of the under floor system to be used.
2.4 Gas-side connections
2.4.1 Additional guidelines for gas connections
m
Before installation, check that the gas meter has sufficient capacity for the demand. Remember to consider the consumption of all household appliances.
16
Remeha Avanta Plus
2.4.2 Adjusting boiler to other gas-type
The Avanta Plus boilers are suitable for both natural gas and propane firing. For the Avanta Plus 39c an optional LPG-set is needed. The boilers are supplied as standard set for natural gas (H), therefore the following procedure must be carried out BEFORE the boilers are fired and commissioned for the first time on propane: Adjust the fan speed (see Par. 2.9.8) and adjust the gas/air ratio (see Par. 2.9.3).
2.4.3 Connecting the gas supply
LT.AL.W7H.000.019
Before starting any work on the gas supply, turn off the main isolation valve.
Connect the gas supply to the 22 mm Ø boiler con-
nection.
m
Make sure there is no dirt in the gas pipe. Blow through the
pipe before installation or tap well to purge.
Make sure that the minimum gas service pressure is high
enough (in full load > 17 mbar).
Preferably install a gas filter in the gas pipe to prevent the
gas block from getting dirty.
The gas supply must be connected, tested for soundness
and purged by a qualified Engineer and in accordance with BS6891.
2.5 Flue terminal and air supply connections
The Remeha Avanta Plus 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.
2.5.1 Flue terminal positions
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.
z
The boiler will produce a water vapour plume during normal operation.
Positions for the Remeha Avanta
Plus are shown in the figure
and table 02.
17
G
G
A
A
B
600 mm
600 mm
2000 mm
D,E
S
S
F
P
H
C
J
J
L
M
K,N
No flue must penetrate area within dotted lines round roof light
LT.AL.W7H.000.020
Dimen-
sions
Terminal location Minimum
distance
(in mm)
to terminal
(room
sealed)
A Directly below an opening, air brick,
opening window, etc.
300
B Above an opening, air brick, opening
window, etc.
300
C Horizontally to an opening, air brick,
opening window, etc.
300
D Below a gutter or sanitary pipe work 40
1)
E Below the eaves 40
1)
F Below a balcony or carport roof 40
1)
G Above ground, roof or balcony level 300 H From vertical drain/soil pipe work 40
1)
J From an internal or external corner 40
1)
K From a surface or boundary facing the
terminal
600
2)
L Vertically from a terminal on same wall 1500
M Horizontally from a terminal on same
wall
300
N From a terminal facing the terminal 1200 P From an opening in a carport (e.g.
door, window) into the building
1200
R From a vertical structure on the roof n/a S Above an intersection with the roof
n/a
table 02 Minimum distances to terminal
1)
= We advise to use deflectors in case of these small dis-
tances.
2)
= Where the terminal is positioned directly opposite an
opening in the facing wall the min will be 2 m.
n/a = not applicable.
2.5.2 Room sealed flue
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.
24s 28c 35c 39c
Diameter in mm Ø
60/100 80/125 60/100 80/125 60/100 80/125 60/100 80/125
Maximum length ‘L’ allowed [m]
6 29 6 29 7 30 5 25
Eq. Length of 90° elbow 1.4
Eq. Length of 45° elbow 0.65
L
VRS roof mounted room sealed terminal
L
80/125 or 60/100
table 03 Maximum pipe lengths for fl ue duct and air supply in
room sealed application
18
Remeha Avanta Plus
158 mm
ø 125 mm
2
1
2
1
z
For flue installations not covered by this booklet, please contact our technical help line 0118 978 3434.
2.5.3 Connecting the flue terminal and air supply
LT.AL.W7H.000.021
Check the depth of the wall and cut the terminal to suit – taking note of the cutting instructions supplied with it
Core drill a 125 mm Ø hole in the wall, fit the rubber closure plate at the exit end and slide the terminal through the wall until the closure plate is clear of the outer edge of the wall – pull back the terminal till the closure plate is flush then fit inner wall closure to secure.
z
• All connections must be airtight and waterproof.
• Horizontal extension sections should slope towards the
boiler (at least 3 cm per metre).
19
230 V
2.6 Electrical connection
Connect the boiler to the fused (3 amp) switch spur unit adjacent to boiler.
The switch unit must always be accessible.
LT.AL.W7H.000.022
{
When the switch spur is on the following components of this appliance can be live (230 V):
• electrical connection pump;
• electrical connection gas combination block;
• electrical connection three-way valve;
• most parts of the control unit;
• ignition transformer;
• X1, X2, X4, X5, X6 and X7 terminal strip;
• 230 V supply cable connection.
2.6.1 The control unit
The Remeha Avanta Plus 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.
LT.AL.W7H.000.023
The boiler is not phase sensitive. The maximum rated input is between 115 and 180 W (depending on boiler type). 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.
20
Remeha Avanta Plus
1
2
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 (for 24s, 35c and 28c) 24 VDC AC fan (for 39c only) 230 VAC
table 04 Control unit characteristics
m
Any loads other than those specified above are only allowed if an isolating transformer is used.
The output of the Remeha Avanta Plus can be controlled in the following ways: On/off control – volt free switching - The boilers internal control will modulate the output to achieve the flow tempera­ture set point of the boiler. This contact is on the X9 terminal strip (low voltage only). Modulated control – Open Therm - The external controls will modulate the boiler’s output to achieve the flow temperature determined by the modulating regulator. This contact is on the X9 terminal strip (low voltage only). On/off control – 230 V switching - The boilers internal con­trol will modulate the output to achieve the flow temperature set point of the boiler. This contact is on the X2 terminal strip (230 VAC only).
Modulated control – Open Therm in combination with an externally mounted simple 230 V switching time clock -
The boiler will provide room compensated heating and time control over CH and DHW (System boiler).
z
• All connections on terminal X1, X2, X4, X5, X6 and X7 are 230 VAC.
• All connections on terminal X9 are low voltage only.
2.7 Connecting external controls
Release the two screws at the bottom of the front casing and remove the front casing.
Feed the cables through the grommet in the base of the boiler.
Connect the cables to the relevant connectors, as shown in the diagrams.
LT.AL.W7H.000.024
{
Isolate power supply at the fused spur before carrying out
any work on the boiler controls.
21
L N
230v - 3 Amp Power Supply
Terminal Block X5
X2
X5
X6
X7
X9
Terminal Block X9
Exist links
Exist links
Terminal Block X2
1
Neutral
2
Open valve to DHW (230v)
3
Open valve to HTG (230v)
Outside sensor (red band) for direct boiler weather compensation or when used in conjuction with a compatable Open Therm control eg: Chronotherm or Celcia 20
DHW sensor (red band) or volt free thermostat (make on temp fall) Remove existing link to use this function
External interlock (volt free) Remove existing link to use function
Modulating - using Open Therm control eg: Honeywell Chronotherm or Celcia 20 On / Off - using volt free switching control eg: Celcia 10 or low volt room thermostat
Power supply to external time clock -230v
Switch live (230v) from external time clock DHW demand Remove existing link 4-3 to use this function
Switch live (230v) from external time clock HTG demand Remove existing link 4-1 to use this function
NOTE: Terminal blocks are not in line as shown - diagramatic only
For external DHW priority diverting valve on System boiler when used in conjunction with "Open Therm" compensation
Terminal Block X7
Terminal Block X6
1
2
Common Alarm (Closes on alarm)
Boiler Run (Closes on run)
3
1
2
3
4
5
6
7
8
5
4NL
3
2
1
E
LT.AL.W7H.000.025
22
Remeha Avanta Plus
X9
Terminal Block X9
Modulating - using Open Therm control eg: Honeywell Chronotherm or Celcia 20 On / Off - using simple volt free switching control
1
2
3
4
5
6
7
8
Exist links
X2
Exist links
Terminal Block X2
Power supply to external time clock -230v
Switch live (230v) from external time clock DHW demand Remove existing link 4-3 to use this function
Switch live (230v) from external time clock HTG demand Remove existing link 4-1 to use this function
5
4NL
3
2
1
2.7.1 On/off control – room temperature (volt free
switching)
LT.AL.W7H.000.026
The Remeha Avanta Plus can be connected to a 2-wire on/off thermostat, such as the Remeha Celcia 10. Mount the thermostat in a reference room (usually the living room).
Remove existing link between connectors 7 and 8 of the X9 terminal strip before use;
Connect the 2-wire 24 V room thermostat to connectors 7 and 8 of the X9 terminal strip.
z
If a room thermostat with an anticipation resistor is being used, parameter p5 should be changed from 0 to 1, see par. 2.9.8.
2.7.2 Time control using an internal or external 230 V
clock
{
When the switch spur is on, the terminal strip X2 will be live (230 V).
LT.AL.W7H.000.027
A 230 V two channel time clock for CH and DHW control can be connected to the Remeha Avanta Plus
.
Live 230 V supply for the time clock - connect to connectors
4 (N) and 5 (L) on X2 terminal strip.
For CH - remove existing link between connectors 4 and 1 of the X2 terminal strip and connect the 230 V output from the time clock to terminal 1 on the terminal strip X2.
For DHW - remove existing link between connectors 4 and 3 of the X2 terminal strip and connect the 230 V output from the time clock to terminal 3 on the terminal strip X2.
m
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).
23
X9
Terminal Block X9
Modulating - using Open Therm control eg: Honeywell Chronotherm or Celcia 20 On / Off - using simple volt free switching control
1
2
3
4
5
6
7
8
Exist links
LT.AL.W7H.000.028
2.7.4 Modulating control – room or outside compensation
2.7.3 Connecting a 230 V time clock in combination with a modulating room control
With an externally mounted simple 230 V switching time clock connected to connectors on X2 terminal strip and a Celcia 15 connected to connectors 7 and 8 of X9 terminal strip (remove existing link between connectors 7 and 8 before use), the Remeha Avanta Plus will provide room compensated heating and time control over CH and DHW (System boiler).
o
An OpenTherm® room modulating control (Celcia 15) 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 Plus has an OpenTherm
®
interface. This
enables our modulating range of OpenTherm
®
room controls (e.g. the Remeha Celcia 15 or 20) to be connected without any further modifications.
Mount the control in a reference room (usually the living
room).
Connect the two-wire interface cables to connectors 7 and
8 of the X9 terminal strip (remove existing link between connectors 7 and 8 before use).
When using the Celcia 20 it is possible to add the outside
sensor to provide weather compensation with room adjust­ment. Connect the outside sensor to connectors 1 and 2 of the X9 terminal strip.
24
Remeha Avanta Plus
X9
Terminal Block X9
Outside sensor (red band) for direct boiler weather compensation or when used in conjuction with a compatable Open Therm control eg: Chronotherm or Celcia 20
1
2
3
4
5
6
7
8
Exist links
20
40
60
75
01020-15
Factory setting
If the DHW water temperature on the OpenTherm® control can be adjusted, then the Remeha Avanta Plus 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 avail-
able from several control manufacturers.
z
The Remeha Avanta Plus can therefore be controlled directly by any other controls with this OpenTherm® logo
2.7.5 Connecting an outside temperature sensor
LT.AL.W7H.000.029
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 p29 to between 0 and -30°C)
- Outside temperature maximum set point = 20°C (adjustable
with parameter p28 to between 0 and 40°C)
- Flow temperature set point at maximum outside tempera-
ture = 20°C (adjustable with parameter p27 to between
0 and 60°C)
- Flow temperature set point at minimum outside temperature
= 20°C (adjustable with parameter p1 to between
20 and 85°C)
LT.AL.W7H.000.030
o
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 above graph.
25
X9
Terminal Block X9
DHW sensor (red band) or volt free thermostat (make on temp fall) Remove existing link to use this function
1
2
3
4
5
6
7
8
Exist links
X9
Terminal Block X9
Modulating - using Open Therm control eg: Honeywell Chronotherm or Celcia 20 On / Off - using simple volt free switching control
1
2
3
4
5
6
7
8
Exist links
2.7.6 Connecting the DHW sensor/thermostat
LT.AL.W7H.000.031
If an external DHW calorifier is being used with the Avanta Plus system boiler a volt-free DHW control sensor or ther­mostat can be connected to connectors 3 and 4 of the X9 terminal strip after removing the existing link. The control will automatically detect whether a sensor or a thermostat has been connected.
2.7.7 Connecting a frost thermostat
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.
o
A frost thermostat should preferably be installed in rooms
with a high frost risk.
Connect the frost thermostat in parallel to the room thermo
stat - connectors 7 and 8 of the X9 terminal strip (remove existing link between connectors 7 and 8 before use).
m
This function is a protection device for the boiler only, not
for the system or building fabric.
If a frost thermostat or a modulating room control,
connected across connectors 7 and 8 is activated, the boiler will operate continuously to achieve the flow set point.
• If the Celcia 20 control has been fitted, with an outside
sensor the boiler and building fabric will be protected. See the installation documentation supplied with the control.
26
Remeha Avanta Plus
X9
Terminal Block X9
External interlock (volt free) Remove existing link to use this function
1
2
3
4
5
6
7
8
Exist links
X7
Terminal Block X7
1
2
Common Alarm (Closes on alarm)
Boiler Run (Closes on run)
3
X10
2.7.8 Connecting an external interlock
LT.AL.W7H.000.033
The Remeha Avanta Plus 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.
LT.AL.W7H.000.034
2.7.10 Connecting a PC/PDA
LT.AL.W7H.000.035
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.
2.7.9 Connecting remote alarm and boiler run indication
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 24 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 24 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 24 from 0 to 3.
27
X13
X15
X1
X9
X6
X5
X4
X3
X8
X7
X10
X0
X2
X6X0
L N
X1
4 5 1 3 2X21 2 3 4 5X31 2 3 4X41 2 3 4
X8
1 2 3 4X91 2 3 4 5 6 7 8
X13
4 1 3 7 5 6 8
X15X5
1 2 3
1 2
Power supply 230V, 50Hz
L
123
GCV FAN*
*Only for 39c boiler
BP
X31 X81X21X22
15
N
BR
GN/YW
GN/YW
BKBRBL
WH
GY
BR
BK
WH
BK
RD
WH
COMM.
NC.
NO.
BL
WH
GN
RDWHBL
WH
BK
BK
OR
GN
WH
YW
Blocking up entry
Blocking up entry
Compensator / Open Therm
TOs
BR
BR
BL
BL
X7
1 2 3 1 10
1 10
123
DV
1542
FAN
HLT
RsAs
12 12 12
12
T
X134 X133 X131
Fs
123
X132
123
X132A
X131A
BK BLACK BL BLUE BR BROWN GN GREEN GN/YW GREEN/YELLOW GY GRAY RD RED WH WHITE YW YELLOW
WIRE COLOURS
As Flow sensor BP Boiler pump Fs Flow switch CP Circulation pump DV 3-way valve GCV Gas combination valve HLT High limit thermostat Os Outdoor sensor Rs Return sensor
- - - - Will not be supplied or wired.
BOILER COMPONENTS
*
2.8 Wiring diagram
LT.AL.W7H.000.234
* Remove existing link between connectors 7 and 8 before use
28
Remeha Avanta Plus
1
2345
2.9 Commissioning
2.9.1 Control Panel
The control panel of the Remeha Avanta Plus has 4 function keys and a LED display. The function keys are used to read or change the settings and temperatures.
LT.AL.W7H.000.036
1 = display 2 = [reset] key 3 = [-] key 4 = [+] key 5 = [enter] key
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. The symbols above the function keys indicate what the function of that par­ticular key then is.
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.
Press any key and the current boiler status and operation code will appear in the display.
In the event of a fault, the fault code is displayed instead of the dots.
2.9.2 Additional guidelines for commissioning
When commissioning, use the Boiler Log Book.
Work through all the stages of this section, complete the
commissioning details in the supplied Boiler Log Book and send a copy of the completed documents to Broag to regis­ter the boiler.
The boiler is supplied as standard for use with Natural Gas and tested at an operating pressure of 20 mbar.
m
The boiler must not be put into operation with a different type of gas without reference to Broag.
2.9.3 Putting the boiler into operation
This section details the procedure for putting the boiler into operation. There are 7 stages to the procedure:
1. Isolating the power supply and opening the front cover;
2. Checking the connections and making the boiler operational;
3. Switching the boiler on and setting the controls;
4. Checking/setting the gas/air ratio at full load;
5. Checking/setting the gas/air ratio at low load;
6. Making the boiler ready for use;
7. Instructing the user.
29
1
2
230 V
Check
1,2 bar
1
2
3
4
1. Isolating the power supply and opening the front cover
LT.AL.W7H.000.037
Switch off the boiler at the fused spur and remove the fuse;
Remove the front panel (release the two screws at the bot-
tom of the front panel, pull the bottom of the panel; forward and lift off the two pins on the top of the main casing).
2. Checking the connections and making the boiler operational
z
Open the valves on all the radiators connected to the central heating system before filling the system with water.
LT.AL.W7H.000.038
Open the valves on all the radiators connected to the
central heating system;
Fill the system with water to the design operating pressure
(normal for a one/two storey house 1.2 bar, minimum pressure 1 bar, maximum pressure 2.5 bar);
Whilst filling, air from the system will escape through the
automatic air vents and the pump.
m
When the vent caps start leaking water, close them with
the vents caps supplied.
Avoid water getting into the boiler.
Check the condensate siphon. This should be filled to the
mark with clean water if necessary.
30
Remeha Avanta Plus
230 V
Check
C
Check the integral boiler pump – remove chrome centre screw to vent pump and spin the shaft to check that the impellor can move freely;
Check that all boiler connections are watertight;
LT.AL.W7H.000.039
Open the boiler gas valve and check the static pressure to the boiler at the measurement point (C) on the gas block.
m
The boiler has been factory tested for natural gas at 20 mbar. The minimum gas inlet pressure is 17 mbar for natural gas.
Check that the gas supply to the boiler is gas tight (in compliance with the current regulations, see Chapter 7 the maximum test pressure at the gas pipe inlet, with the boiler gas valve open, is 60 mbar.
Vent the gas pipe by unscrewing the measurement point (C) on the gas block (tighten it again as soon as the pipe is fully vented).
Check that the gas connections in the boiler are sealed.
Check that all electrical connections, including the earth
connection, have been made correctly.
Check the electrical connections to the thermostat and other external controls.
Check that the flue-gas and air-supply connections are sealed.
LT.AL.W7H.000.040
3. Switching the boiler on and setting the controls
LT.AL.W7H.000.041
Replace the fuse in the spur and switch on the 230 V
power supply.
Set the controls to heat demand.
The boiler will begin an automatic venting-programme
(which lasts approx. 3 minutes) and will do this every time the power supply is isolated.
The boiler now starts to run. The operational status is
shown in the display. The normal operating status finally shows 0 in the display.
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