EN
Installation Manual
Heating Boiler . . . Type 40C
Wall hung, fan flue, room sealed gas boiler
CHAPTER 1. GENERAL
CHAPTER 2. INSTALLATION
CHAPTER 3. SUSPENDING THE UNIT
CHAPTER 4. COMMISSIONING
CHAPTER 5. TEMPERATURE REGULATIONS
CHAPTER 6. BURNER STATES and MONITORING
CHAPTER 7. MAINTENANCE
CHAPTER 8. MALFUNCTIONS
CE-CERTIFICATE
2007
E000129032
Coopra Advanced Heating Technologies
Installation manual 40 EN
CONTENTS
CHAPTER 1. ………………………………………………………………………………..……….…………………………… 4
1.1. Technical data
1.2. Dimensional sketch…………………………………………………………………………………..…………………….
1.3. Unit components……………………………………………………………………………………………….……………
1.4. Diagrams
1.4.1. Functional flow diagram………………………………………………………………………………….……
1.4.2. Wiring diagram………………………………………………………………………………………...………..
1.5. Operation………………………………………………………………………………………………………………..…..
1.6. Boiler types
1.6.1. Burner assy
1.6.2. Primair heat exchanger
1.6.3. Venturi
1.6.4. Pump
1.7. Conditions of delivery
1.8. Configuration of flue tube and air supply…………………………………………………………………………………
1.9. Environmental conditions
1.10. Permitted flue resistance
1.11. Heating of central heating water
1.12. Pump and hydraulic resistance………………………………………………………………………………………….
1.13.
1.14. Standards / Guidelines
1.15. General safety regulations
1.16. Water quality
5
6
7
8
9
10
11
CHAPTER 2. INSTALLATION…………………………………………………………………………………………….…… 12
2.1.
2.2. Mounting the assembly bracket
2.3. Water and gas connections………………………………………..……………………………………………………..
2.4. Seal on the waterside
2.5. Draconin connection
2.6. Electricity connection
13
CHAPTER 3. SUSPENDING THE UNIT ………………………………………………………………………………..……. 14
3.1. The unit
3.2. Suspension
3.3. Fitting the flue tube and air supply
3.3.1. Connecting the eccentric flue and air supply (2-pipe system)
3.3.2.
3.3.3. Connecting the concentric flue tube and air supply (60/100 mm adapter)
3.4. Condensation water drain/overpressure protection on drain
3.5. Connection block
3.5.1. On/off room thermostat (if applicable).
3.5.2. Modulating room thermostat (if applicable)………………………………………………………….………. 15
3.5.3. Connection for the external temperature sensor (if applicable).
3.6. Assembling the connection block
3.7. Placing the jacket
CHAPTER 4. COMMISSIONING…………………………………………………………………………………………..….. 16
4.1. Electrical connection 230 VAC
4.2. Main switch
4.3. Filling
4.4. Reading the water pressure
4.5. Venting
4.6. Chimney sweeper function
4.7. Gas / Air Ratio
4.8. Gas / Air adjustment ( CO2 analysing)…………………………………………………………………………..……….. 17
4.9. Placing the jacket
4.10. Changing over to LPG-gas……………………………………………………………………………………….....….. 18
4.11. Display……………………………………………………………………………………………………………….…….. 19
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Coopra Advanced Heating Technologies
Installation manual 40 EN
4.12. Menu structure……………………………………………………………………………………………………………. 20
CHAPTER 5. TEMPERATURE REGULATIONS……………………………………………………………………….……. 21
5.1. Central heating
5.1.1. Central heating temperature regulation with on/off thermostat without outside temperature sensor
5.1.2. Central heating temperature regulation with on/off thermostat with outside temperature sensor
5.1.3. Central heating temperature regulation with modulating thermostat (Opentherm)……………………. 22
CHAPTER 6. BURNER STATES and MONITORING……………………………………………………………..……….. 23
6.1. Standby
6.2. Pre rinse
6.3. Ignition
6.4. In operation
6.5. Post-rinse………………………………………………………………………………………………………….………… 24
6.6. Lock-out
6.7. Pump test program
6.8. System pressure monitoring
6.9.
6.10. Temperature regulation
6.11. Limiter
6.12. Flue sensor………………………………………………………………………………………………………...……… 25
6.13. Frost protection
6.14. Glow plug protection
CHAPTER 7. MAINTENANCE……………………………………………………………………..………..………………… 26
7.1. ANNUAL MAINTENANCE
7.1.1. Checking the CO2 percentage on full load
7.1.2. Measuring the load on the unit
7.1.3. Checking the condensation water drain
7.1.4. Ionisation probe
7.1.5. Water pressure
CHAPTER 8. MALFUNCTIONS……………………………………………………………………………………………….. 27
8.1. Draining the unit
8.2. No signal on the display
8.3. Fault code 'U/d or U/O' (alternating U with a status code will appear on the display)
8.4. Unit does not respond to central heating heat demand
8.5.
8.6.
8.7. Check function of gas control
8.8. Measuring the fan impedance
8.9. Fitting instructions for the pressure sensor
8.10. Fitting instructions for the safety valve
8.11. Malfunction code 'F' (flashing)............................................................................................................................. 28
8.11.1. Gas control will not open (no voltage)
8.11.2. Gas control will not open (gas inlet pressure too high)
8.11.3. Gas control will not open (coils defective)
8.11.4. Gas/air mixture is not correctly adjusted
8.11.5. Check glow plug
8.11.6. Check ionisation current
8.11.7. Inspection / cleaning / replacement of the ionisation probe
8.11.8. Ionisation probe or ionisation cable makes short circuit with earth
8.11.9. Boiler pump
CE-CERTIFICATE…………………………………………………….…………………………………………………………. 30
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 1.
1.1. Technical data
Boiler type
Gas type
Electrical data
40C
natural gas G20
Mains voltage / Frequency
230 V / 50 Hz
Power consumption (max.)
144 W
Thermostat voltage
Dimensions and
weight
Emission value
Flue gastemperature
Maximum
chimney
resistance
Connections
24 V
Height
600 mm
Width
360 mm
Depth
300 mm
Weight
35 kg
CO2
8.2% - 8.8%
12 – 100 ppm
NOX (0% O2)
10 – 30 ppm
at 80/60ºC
< 70ºC
at 50/30ºC
< 35ºC
Air feed and flue tube together
125 Pa
Gas
Ø 15 mm
CH (flow and return)
Ø 20 mm
Overflow
Ø 15 mm
Ø 60 – Ø 60 mm or Ø 80 – Ø 80 mm
Ø 60 / 100 mm or Ø 80 / 125 mm
0.8 L
90°C
Max. Water pressure
Certification
3 bar
Pump high
40 dB(A)
Pump low
30 dB(A)
CE Identification number
CE0063-AT3070
Boiler type
Gas type
Gas technical
data type 40
9.2% - 9.8%
CO (0% 02)
Air feed and flue Eccentric
tube system
Concentric
Boiler heat
Water contents
exchanger
Max. temperature
Sound level
LPG gas G30/G31
40C
natural gas G20
Nominal gas pressure
LPG gas G30/G31
20 mbar
37/50 mbar
Heat input CH (gross)
8.1 – 41.1 kW
Heat input CH (net)
7.3 – 37.0 kW
Nominal output CH at 80/60ºC
7.2 – 36.0 kW
Nominal output CH at 50/30ºC
7.9 – 37.9 kW
Efficiency at 80/60ºC (net)
Low load = 98.1 %; High load = 97.2 %
Efficiency at 50/30ºC (net)
Low load = 108.4 %; High load = 104.2 %
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.2. Dimensional sketch
Dimensions in mm
Free space
There must be sufficient space at the top and bottom to be able to suspend the unit and to be able to connect all feed and drain
pipes. Normally, roughly 300 mm is required.
It is recommended to leave a free space of 150 mm on the left (for servicing reasons) and 50 mm on the right of the unit.
The front of the unit must be easily accessible for servicing at all times.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.3. Unit components
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
Description
Primary heat exchanger
Manufacturer
Coopra
Pump
Wilo
Glow plug
Ionisation probe
Burner type 30 / 40
Vapour tray
Gas valve
Fan
Venturi type 40
Water pressure sensor
Return sensor
Flow sensor
Safety device 3 bar Model 2000
Saint Gobain
Sapco
Furigas
Coopra
Honeywell
Vibo
Honeywell
Huba
Honeywell
Honeywell
Emmeti
N/A
Flue gas temperature sensor
Type plate
Condensation water overflow
Gas connection
Central heating return
Central heating flow
N/A
Tasseron
Coopra
Coopra
Coopra
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.4. Diagrams
1.4.1. Functional flow diagram
-t
FLOW
X17.6
X12
X17.3
DISPLAY
-t
X17.2
RETURN
X17.5
X22.1
-t
X4.5
X19.1
X2.5
-t
X18.3
X2.4
X18.1
X2.3
X16.7
X2.2
X16.3
X2.1
-t
FLUE GAS
X16.6
X16.2
WATER PRESSURE
+
X15.2
P
X15.1
-
X15.3
ROOM THERMOSTAT
24VAC
X9.1
X9.2
X10.1
EbV THERMOSTAT
FURIMAT-990
-t
OUTSIDE
X3.5
X3.4
X3.2
X3.1
X4.4
X4.3
X4.1
X8.2
X10.2
X8.6
OPENTHERM
THERMOSTAT
X11.1
PC CONNECTION
X14
X8.5
X11.2
X8.4
X8.3
ROOM THERMOSTAT
230VAC
230V 50 Hz
X1.4
X8.1
X1.3
X6.3
X6.4
L
N
PE
MAXIMAL THERMOSTAT
(OPTIONAL)
X4.6
TANK THERMOSTAT
EXTERNAL TANK
ALARM CONTACT
X22.2
X19.2
DHW INLET
X7.4
X6.1
X7.2
L1
L2
PUMP
230 VAC
L3
N
PE
DHW
CH
THREE-WAY VALVE
230 VAC
N
PE
L
GAS VALVE
230 VRAC
N
PE
F1
+
FSP
COMBUSTION FAN
325 VDC
F2
PE
IONISATION
GLOW IGNITER
N
L
BURNER
X7.1
PE
PE
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.4.2. Wiring diagram
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.5. Operation
1.6.1. Burner assy
1.6.2. Primair heat exchanger
A fan sucks the air required for the combustion through the air
feed canal (A). Because the combustion air in the venturi
sucks an under pressure, the correct amount of gas (G) is
automatically added to the combustion air.
The flammable gas/air mixture thus obtained is fed to the
burner, via a mixing chamber, to be ignited at the surface of
the burner by a ceramic glow plug. The hot combustion gases
are efficiently fed through the heat exchanger, where they
give their heat to the water. The flue gases are fed outside,
through the flue tube (F), into a flue tube exhaust canal.
The condensation water (H2O) thus obtained is discharged
into the sewer.
1.6.3. Venturi
1.6. Boiler types
Coopra 40C
High efficiency boiler for central heating
only.
1.6.4. Pump
The Coopra boiler is a heating unit with compact dimensions
and a very high efficiency, with versions for domestic and
small commercial use for central heating.
The type plate, which specifies the type of gas etc. to be used,
for which the unit is set, is on the left side of the unit.
The unit is fixed to the wall with the aid of a separately
delivered assembly bracket or rear cabinet.
1.7. Conditions of delivery
Coopra Advanced Heating Technologies b.v. supplies its
products according to the general conditions of delivery for the
metal and electro technical industry. Registered with the Clerk of
the District Court at Den Haag on 19 October 1998 under no.
119/1998.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.8. Configuration of flue tube and air supply
See figure below for an overview of possible configurations.
The units are approved for application on the drain systems:
B23, C13(x), C33(x), C43(x), C53, C63(x), C83(x).
1.9. Environmental conditions
The area in which the unit is installed must satisfy the
applicable regulations.
The wall must be able to bear the weight of the unit (loaded
weight approx. 40 kg).
If you use a different assembly surface than a bricky wall of
sufficient thickness, you must select suitable fixtures yourself
and properly install the unit.
The unit may not be fitted in a chemically aggressive
environment.
The unit with air feed and flue gas exhaust satisfies the
requirements of protection class IP44 and may therefore be
installed in a wet area.
Although the unit is fitted with an internal frost protection, it
may not be exposed to extremely low ambient temperatures
(lower than -10°C).
Preferably use flue tube materials, roof ducts and exterior wall
ducts with a quality mark.
With plastic drain materials, use a unit with a flue gas
temperature sensor.
1.10. Permitted flue resistance
Indication for the resistance values given in table below apply
to
Flue exhaust flow rate of 61 m3/hour (at 70 ‘C)
Supply air flow rate of 48 m3/hour (at 20 ‘C)
The total resistance of the flue tube and air supply together
may not be greater than 85 Pa.
Ø 100 mm
Ø 80 mm
Type 40 (35)
Tube per metre
2,5 Pa
Bend 90°, R = 1.5 D
3.0 Pa
6.0 Pa
Bend 90°, R = 0.5 D
5.0 Pa
10.0 Pa
Bend 45°, R = 1.5 D
2.0 Pa
4.0 Pa
Bend 45°, R = 0.5 D
Roof duct
5.0 Pa
3.5 Pa
7.0 Pa
20.0 Pa
30.0 Pa
1.11. Heating of central heating water
If the room thermostat or space unit indicates that heat is
required for the central heating, the unit will heat the central
heating water as necessary. The power supplied is
automatically adapted to the heat required and is also
continuously variably adapted to the heat demand with the
use of an on/off thermostat.
When the thermostat indicates that the desired temperature
has been reached, the central heating water is no longer
heated. The central heating pump will continue to run for a
previously set time to distribute the heat evenly over the
heating installation.
A differential bypass valve must be installed on plants where it
may happen that various radiators are simultaneously
excluded from the circuit because of closure of control or zone
valves.
The by-pass valve must be mounted in the installation
between the flow and the return, provided that flow direction
indicated by arrow is respected.
To adjust the by-pass valve rotate knob of the graduated
scale on setting 2.5-3.0. This value corresponds to the meters
of pump head (m H2O).
Lock the screw on the groove knob.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
1.12. Pump and hydraulic resistance
The pump characteristic and the resistance graph of the unit
are given below.
1.14. Standards / Guidelines
With the installation of the unit, all local regulations must be
followed, where applicable, including the provisions of the
following standards and guidelines:
•
Building Regulations
•
Regulations for natural gas installations
•
Regulations for LPG (if applicable)
•
Guidelines for existing gas installations
•
Safety requirements for central heating installations
•
Safety provisions for low voltage installations
•
General regulations for drinking water installations
•
Water authority regulations
•
Ventilation in dwellings
•
Supply of combustion air and exhaust
•
House sewerage in homes and dwellings
•
Fire Brigade regulations
•
Factory Act regulations
•
Regulations applicable to HWS water Ask for the
locally applicable regulations at the local water
company as they are different in some areas
If set on automatic function (menu setting) the electronics
switches the speed of the pump to “high” or “low”, depending
on the temperature demand:
•
•
Dt > 30 °C : the pump runs „high speed“.
Dt < 10 °C : the pump runs „low speed“.
Dt = Setpoint temperature deducted with the actual Flow
temperature.
0,8
Pump state high
0,7
Pressure [bar]
0,6
0,5
Pump state low
0,4
1.15. General safety regulations
The installation may only be performed by a recognised
installer.
Take note that internal parts of the unit can carry a dangerous
electrical voltage (230 Volt).
Take note that the unit, the various pipes and the flue gas
exhausted by the unit can reach high temperatures (up to
90°C).
Before carrying out maintenance activities in or on the unit,
you must close the gas tap, switch off the electricity supply
and pull the mains plug out of the socket.
0,3
Boiler resistance
0,2
0,1
0
0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
2,4
2,6
2,8
3,0
Flow [m³/h)]
1.16. Water quality
The composition and quality of the system water has a direct
effect on the performance of the total system and the life of
the boiler heat exchanger. Great care must be used with the
addition and use of chemicals, water softeners, oxygen
binders, de-aerators, aerators and water filters as they
increase the chance of malfunctions.
Corrosive elements of certain additives can attack the system
and cause leakages; the build-up of undesired deposits
generally leads to fatal damage of the heat exchanger.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 2. INSTALLATION
2.2. Mounting the assembly bracket
1
2
To mount the assembly bracket on a brick wall of sufficient
thickness, use the screw plugs that are supplied. When you
have determined the place of assembly, proceed as follows:
1. Draw the position of the hole (1) in the strap of the
assembly bracket.
2. Use a masonry drill of 8 mm diameter to drill a hole with a
sufficient depth in the wall.
3. Keep the hole (1) in the assembly bracket in front of the
hole in the wall and fit one of the screws supplied through
the assembly bracket in the hole.
4. Align the assembly bracket with the aid of a spirit level.
5. Use a masonry drill of 8 mm diameter to drill holes with a
sufficient depth in the wall through the two bottom holes (2)
in the assembly bracket.
6. Fit two of the screws supplied in the bottom holes.
7. When using assembly brackets with ac lamping plate for
eccentric flue tube and air feed connection:
Use a masonry drill of 8 mm diameter to drill a hole
with a sufficient depth in the wall through the hole in
the clamping plate and fit a nail plug in this hole.
Fit the clamping plate at right angles.
8. Fix the assembly bracket firmly by tightening all screws.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
2.3. Water and gas connections
2.3.2. Central heating water connections
•
Connect the central heating return pipe to connection
(1). The central heating return pipe (1) must be fitted
with a suitable expansion vessel. The size of the
expansion vessel must be determined on the basis
of the central heating water temperature and the total
water content the installation contains.
•
Connect the central heating flow pipe to connection
(2).
•
A differential bypass valve must be installed on
plants where it may happen that various radiators
are simultaneously excluded from the circuit because
of closure of control or zone valves.
•
Install a filling and draining device in the central
heating system. Do not use the overflow valve as a
drain. The overflow valve is a safety valve that
ensures that the system is not subjected to a too
high pressure (max 3.0 bar).
•
Stopcocks must be fitted in the central heating flow
pipe (2) and the central heating return pipe (1).
•
If it may be expected that the central heating water will
be severely contaminated by under floor heating, fitting
is a 2 kg dirt filter in the return pipe is recommended.
Coopra cannot give a guarantee for damage to the unit
that is caused by dirt in the system.
•
Before connecting the boiler unit, rinse the system
completely to remove all contamination.
75
40
4 3
2 1
1 = Heating return pipe connection
2 = Heating flow pipe connection
3 = Gas connection
4 = Draconin connection
2.4. Seal on the waterside
With the use of the group of taps, you can now make a check
on the seal on the waterside of the system.
2.3.1. Gas connection
•
Connect the gas pipe to connection (3).
•
Install the gas pipe stress free.
•
Include an approved stopcock in the pipe.
•
Carefully blow the gas pipe clean.
2.5. Draconin connection
There must be a connection for the removal of the
condensation water to the drain. This connection must be
fitted with a trap to prevent smell problems.
A tundish connection must be made because of possible
overpressure or underpressure in the drain.
Fit the condensation drain pipe (4 (inner diameter 40 mm
minimum) several centimetres left of the gas pipe.
2.6. Electricity connection
There must be an electrical outlet with earth connection
available at a maximum distance of 1 m from the unit.
The electricity connection (230 VAC) must consist of live,
neutral and earth
A good earth connection is a requirement for good operation
of the unit.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 3. SUSPENDING THE UNIT
3.3.2. Connecting the concentric flue tube and air supply
(80/125 mm adapter)
When the flue tube and air supply are connected
concentrically, proceed as follows:
1. Fit the 80/125 mm adapter on the unit before you place the
unit.
2. After you have placed the unit, fit the concentric pipes on
the 80/125 mm adapter.
3.1. The unit
Before unpacking the unit, check
whether the type of gas to be used
corresponds with the specification on
the packing. If you have any
questions, contact your supplier.
To prevent back injury, take account
of the fact that the weight of the unit is
roughly 35 kg.
3.3.3. Connecting the concentric flue tube and air supply
(60/100 mm adapter)
When the flue tube and air supply are connected
concentrically, proceed as follows:
1. Fit the 60/100 mm adapter on the unit before you place the
unit.
2. After you have placed the unit, fit the concentric pipes on
the 60/100 mm adapter.
3.2. Suspension
Place an O-ring in the middle of each of the connections
present (1) - (5).
Remove the caps from the pipes of the unit.
Keep the unit straight against the wall at about 5 cm above
the site of the mounted assembly bracket or the assembly
cabinet.
Press the unit into the guide and let it drop carefully, so that
the hook on the suspension bracket falls into the opening at
the rear of the unit and the pins at the bottom of the unit fall in
the corresponding openings in the suspension bracket. Here,
the connection pipes of the unit fall over the connection points
of the suspension bracket.
Firmly tighten the union nuts of each of the connections
present (1) to (5) with the aid of a spanner.
3.4. Condensation water drain/overpressure protection on
drain
Make a tundish between the condensation water
drain/overpressure protection of the unit and the drainpipe.
3.5. Connection block
The connections of the green connection block are all voltfree contacts. Therefore, do not connect 230 Volts to them!
If no on/off room or modulating room thermostat is used at all,
terminals (1) and (2) must be connected by wire.
3.3. Fitting the flue tube and air supply
3.3.1.
terminals (1) - (2)
Connection for 24 Volt thermostat
terminals (3) - (4)
Connection for 12 kOhm external
temperature sensor
terminals (5) - (6)
3.5.1. On/off room thermostat (if applicable).
Connect to terminals (1) and (2)
The on/off room thermostat (24 V) must be fitted in the same
building as the unit.
Strip about 5 mm off the insulation of the wires of the room
thermostat. Stick the stripped ends of the wires into
connections (1) and (2) of the connection block. Make sure
that the wires do not make a short circuit. Firmly tighten the
screws in the connection block.
Connecting the eccentric flue and air supply (2-pipe
system)
When the flue tube and air supply are connected
eccentrically, proceed as follows:
1. Fit the flue tube in the opening, in the suspension bracket.
2. Let the pipe protrude 30 -35 mm under the clamping plate.
Slide the sliding piece (1) upwards over the flue tube.
3. Fit the air supply in the opening in the suspension bracket.
4. Let the pipe protrude 40 - 45 mm under the clamping plate.
5. Fit the rubber bellows over the air supply pipe and seal
them with the hose clip.
6. Fit the clamping plate on the suspension bracket and
tighten it with the three screws supplied. Take care here that
the clamping plate falls in the groove of the sliding piece.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
3.5.2. Modulating room thermostat (if applicable).
Connect to terminals (1) and (2)
The modulating room thermostat must be fitted in the same
building as the unit.
Strip about 5 mm off the insulation of the wires of the room
thermostat. Stick the stripped ends of the wires into
connections (1) and (2) of the connection block. Make sure
that the wires do not make a short circuit. Firmly tighten the
screws in the connection block.
When using a modulating thermostat, the plug on the printed
circuit board must be connected with the correct polarity.
To reach the printed circuit board, the black casing must be
opened. Connect the plug for the relevant modulating space
unit to terminal a, b or c, according to the following
photograph.
a
b
c
a
White Connection for an on/off
room thermostat
b
Red
Connection for RS30 with EBV space
Coopra protocol
regulation
c
Blue
Opentherm connection
24 Volt
Honeywell or TEM
space regulation
3.5.3. Connection for the external temperature sensor (if
applicable).
Connect to terminals (3) and (4)
If an external sensor is connected, this temperature sensor
must be an NTC with a resistance of 12 kOhm at 25°C.
Strip about 5 mm off the insulation of the wires of the sensor.
Stick the stripped ends of the wires into connections (3) and
(4) of the connection block, see figure 8. Make sure that the
wires do not make a short circuit. Firmly tighten the screws in
the connection block.
If an external sensor is not used, terminals (3) en (4) can
remain open.
3.6. Assembling the connection block
Connect the green connection
block in the green socket.
3.7. Placing the jacket
Place the jacket in the appropriate hooks at the top of the unit.
Let the jacket pivot until it falls over the unit. Tighten the
fastener at the bottom of the jacket.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 4. COMMISSIONING
4.6. Chimney sweeper function
The chimney sweeper function has priority over the central
heating and HWS regulation.
4.1. Electrical connection 230 VAC
• If the boiler is provided with a supply cord and a plug the
appliance must be positioned so that the plug is
accessible.
• If the boiler is not provided with a supply cord without a
plug the supply must have a contact separation of at least
3 mm in all poles.
If the supply cord is damaged, it must be replaced by the
service agent or similarly person in order to avoid a hazard.
The chimney sweeper function is
activated by simultaneously
pressing the "+ and the –
buttons" of the display in for
longer than 5 seconds.
The ionisation current can be read in microamperes in the two
right segments.
4.2. Main switch
To power up the appliance
please switch the main switch
on.
The capacity that is immediately released is the maximum
central heating capacity.
If the display of the unit gives
the status code ‘U’ (alternately
with an arbitrary other code),
this means the live and neutral
connections are reversed. Isolate the supply and reverse the
connections.
Press the "- button" to go
to low load.
4.3. Filling
During filling with water, the unit must be connected to the
mains and be switched on. Fully open all radiator taps.
Connect the water supply to the filling connection. If the unit is
not yet filled with water, the display shows a flashing ‘P’. The
two numbers on the display give the water pressure.
Open the tap to fill the system with water.
When the water pressure is sufficient (> 1.3 bar), the flashing
‘P’ disappears from the display.
Close, after filling, the filling tap again.
Press the "+ button" to
switch back to the preset full
load capacity.
4.7. Gas / Air Ratio
4.4. Reading the water pressure
It is possible to read the water pressure directly from the
display. To do this, press the + button of the display for a
minimum of 5 seconds.
The unit switches out of the menu back to normal operation:
•
automatically after about 5 minutes;
•
or if you press the - button of the display shortly.
4.5. Venting
After filling, the heating installation must be vented.
Proceed as follows:
Follow the instructions from the manufacturer/installer for the
venting of possible other elements of the heating installation,
such as underfloor heating.
Fully open all radiator taps.
Open the air bleed cocks of the radiators one at a time. Use
an air bleed key for this.
As soon as water comes out of the air bleed cock, shut the
cock off again.
(1). Venturi screw – Full load adjustment
Turn the venturi screw anti-clockwise to increase the CO2
value, clockwise to decrease it.
(2). Gas control screw – Low load adjustment
Turn the screw anti-clockwise to decrease the CO2 value on
low load, clockwise to increase it.
(3). Cover screw
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Coopra Advanced Heating Technologies
Installation manual 40 EN
4.8.1. Full load
The burner has to burn at maximum central heating capacity
(Menu setting P=100%).
Pre-adjustment to be done in voltage-free condition:
LPG GAS – Turn venturi-screw clockwise 3
completely down on its seat.
Then turn the venturi screw anti-clockwise 4 for
1/2 complete turns.
NATURAL GAS – Turn venturi-screw clockwise 3
completely down on its seat.
Then turn the venturi screw anti-clockwise 4 for
3 complete turns.
Activate the chimney sweeper function on full load.
Read the CO2 value on the
analyser. If the value does not
correspond with the value in
the "CO2 setting" table,
carefully adjust the venturi
screw (1). Turn the venturi
screw anti-clockwise to
increase the CO2 value,
clockwise to decrease it.
PRE- ADJUSTMENT MEASUREMENT:
Distance between Venturi-screw (1) and the Top of the
venturi-stud to be about:
9 12 mm for natural gas G25
9 14 mm for natural gas G20
9 16 mm for LPG gas G31
4.8.2. Low load
Activate the chimney sweeper function on low load
Read the CO2 value on the
analyser. If the value does not
correspond with the value in
the "CO2 setting" table,
carefully adjust the gas control
adjusting screw (2). To do this,
temporarily remove the cap (3)
with the aid of a Torx
screwdriver. Turn the screw
anti-clockwise to decrease the CO2 value on low load,
clockwise to increase it.
With a vernier callipers the distance between venturi-screw
(1) and the Top of the venturi-stud (1) has to be measured to
find the rough setting of the venturi screw for full load, and
depending of the used gastype.
The exact adjustment of the setting has to be made using the
CO2 analysing method as described below.
4.8. Gas / Air adjustment ( CO2 analysing)
The gas control is set in the factory to the type of gas to be
used. This type of gas is stated on the packing and on the
identification plate. To check the setting, you have to make a
flue gas analysis.
At the end of the flue gas analysis, set the central heating
capacity (P) in the menu again to the value that is best suited
for the application.
Proceed as follows
Remove the measuring cap
from the flue tube.
Fit the measurement probe of a
flue gas analyser (CO2 meter)
in the measurement opening of
the flue tube canal.
Make sure there is sufficient
heat dissipation through the
heating.
CO2 setting
At full central
heating load
(P=100%)
At low load
Natural gas
8,8 % CO2
8,2 % CO2
9,8 % CO2
9,2% CO2
4.9. Placing the jacket
Place the jacket in the appropriate hooks at the top of
the unit. Let the jacket pivot until it falls over the unit.
Tighten the fastener at the bottom of the jacket.
(G20, G25)
Propane (G31)
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Coopra Advanced Heating Technologies
Installation manual 40 EN
4.10. Changing over to LPG-gas
First: the venturi adjusting screw fully clockwise until it
blocks.
Fit a flue gas analyser (CO2
meter) in the measurement
opening of the flue tube canal.
Full load on LPG
Activate the chimney sweeper function on full load.
Turn the venturi adjusting
screw fully clockwise until it
blocks.
Unscrew the venturi adjusting
screw half a full turn anticlockwise. Try to start the
appliance.
Unscrew the venturi adjusting
screw another half a full turn
anti-clockwise. Try to start the appliance.
Repeat till the boiler starts.
(A guide for the dimension from the top of the screw to the top
of the support is 16 mm).
Read the CO2 value on the flue gas analyser. If the value
does not correspond with the value for propane gas G31
(9,8% CO2), carefully adjust the venturi screw until the correct
value is obtained.
Low load on LPG
Activate the chimney sweeper function on low load.
If the gas control is already
properly adjusted for natural
gas, then the low load will not
need to be adjusted.
If necessary, adjust the gas regulator screw until the correct
value ((9,2% CO2) is obtained. Note that this setting is critical
to adjust.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
4.11. Display
During operation, the display shows the status of the unit in
the form of a code. To be able to read the codes, open the
cover in front of the display. The display consists of three 7segment LED’s + three decimal points and three pushbuttons.
The left 7-segment LED shows the status or the menu step.
The two right 7-segment LED's show the temperature, the
pressure or the parameter value.
A = display
B = + button
C = Set / Reset
D = Status display
E = - button
4.11.1. Normal operation (permanent status indication)
The Normal operation is to indicate the burner action.
-Initialisation after restoration of supply power
O
No heat demand, stand-by
C
Central heating heat demand, burner off
C.
Central heating heat demand, burner on
P/C.
Central heating heat demand, low load water pressure
A/C.
Central heating heat demand, low load chimney temperature
c
Central heating pump post-running
b
Burner off / post-running of pump for external HWS cylinder
b.
Burner on
P/b.
Boiler, low load by water pressure
A/b.
Boiler, low load by chimney temperature
O
Frost protection burner off pump running 8C
o.
Frost protection burner on 3C
C (flashing)
Chimney function (temp display max/min/ionisation)
4.11.2. Blocking operation (permanent status indication)
The burner stopped burning due to an incorrect situation. The display gives a permanent indication (not flashing) and the
operation can be restored by switching it off and on (volatile block).
U/
Power supply line not correctly connected
Reversed neutral and line
code
Faulty flow sensor
1
Flow sensor open circuit
Wiring interrupted or not correctly connected
Faulty flow sensor
1.
Flow sensor short circuit
Faulty wiring
Faulty return sensor
2
Return sensor open circuit
Wiring interrupted or not correctly connected
Faulty return sensor
2.
Return sensor short circuited
Faulty wiring
Faulty flue gas sensor
4
Flue gas sensor open circuit
Wiring interrupted or not correctly connected
6
Cold water sensor open circuit
n.a.
6.
Cold water sensor short circuited
n.a.
A
Flue gas temperature > 80°C
The burner is reduced to low load
H
Flow sensor > 105°C while the burner was off
Reset the supply power by the on/off switch
E
Internal error
Reset the supply power by the on/off switch
Check the central heating system pressure
P
Pump test / Start function blocking / Water pressure Seized or faulty pump or faulty pump wiring
Faulty pressure sensor or wiring
nc
Burner Manager fault
Reset the supply power by the on/off switch
4.11.3. Lock-out (flashing status indication)
In case of lock-out the display gives a flashing indication and the operation can be restored by pressing the reset button, placed
on the control panel.
1
Boiler does not pass start temperature test
Check system water flow; second system pump
2
Too many restarts
Internal regulation fault / A/D conversion fault /
3
external sensor fault /Too many restarts
5
Fan fault
7
Gas valve fault
8
Flame detected with closed gas valve
Check gas valve
A
Flue gas temperature > 95°C
Check why flue gas becomes temperature > 95°C
E
Internal interlock fault
Reset the supply power by the on/off switch
H
Flow sensor > 105°C with burner on
Check system water flow
F
Too many ignition attempts
O
Gas valve connection
Check short cut wire on printed circuit board terminal X4
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Coopra Advanced Heating Technologies
Installation manual 40 EN
4.12. Menu structure
By pressing the set/reset button in for longer than 5 seconds, you go to the ‘mode’ menu.
To change the subsequent "Letter" parameter, the user must press the Set/Reset button.
To change the “Range” setting in the parameter, the user must press the “+” or the “–“ button.
Letter
Description
Range
Factory setting
C
max. set point of central heating
25°C - 90°C
82°C
O
Central heating post-running time
1 - 25 min, CO = 24 hours
5 min
P
Max central heating capacity
33 – 100 %
80 %
Field of application
0 = central heating unit
1 = n.a.
H
Type of application
2 = for external HWS cylinder 12kOhm unit-dependent
unit-dependent
3 = for external HWS cylinder 10kOhm
4 and 5 = all functions are blocked
d
t
b
O/b
O/S
O/d
r
Set point for storage HWS cylinder
Basic temperature
External characteristic
Slope
External characteristic
Day reference temperature
Factory setting
40°C -70°C
60°C
10 -70°C
20°C
1-100
20
0°C -70°C
20°C
= Factory setting
= Changed factory setting
Pump speed
= always high
00 = automatic
= always low
= 0.54
P/S
Maximum pressure jump
= 0.53
= 0.54
= 0.52
In the View mode, you can read the actual values of:
8 = Water pressure (in bar)
1 = Flow temperature (in °C)
2 = Return temperature (in °C)
3 = Inlet cold water temperature / HWS sensor (in °C)
4 = External temperature (in °C)
5 = External cylinder temperature (in °C)
6 = Flue gas temperature (in °C)
7 = Flame signal (in μA DC)
9 = Last interlock
A = Last blocking
20
These three settings
are only active when
an external sensor is
connected
If you switch back to the factory setting,
this has no effect on the H, S and P/S
settings
00 = automatic
S
external storage
vessel
Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 5. TEMPERATURE REGULATIONS
Heating curve
Supply temperature [°C]
5.1. CENTRAL HEATING
The permissible central heating flow temperature can be set
between 25°C and 90°C. The burner is blocked when the set
flow temperature is reached. During the first 60 seconds of a
central heating heat demand, the flow temperature may rise to
3°C above the set point before the regulation locks.
5.1.1. Central heating temperature regulation with on/off
thermostat without outside temperature sensor
Increasing set point
When the room thermostat is closed (heat demand), the set
point (desired central heating flow temperature) rises at a rate of
2°C per minute until the maximum permissible central heating
flow temperature is reached (21 minutes from minimum 40°C to
82°C).
Parameter C=82°C [default]
O/S=20 [default]
Falling set point
When the room thermostat is open (end of heat demand), the set
point (desired central heating flow temperature) falls at a rate of
4°C per minute to the minimum central heating temperature
(10.5 minutes from 82°C to minimum 40°C).
O/d=20°C [default]
O/b=20°C [default]
Outside temperature in °C
Outside temperature [°C]
Burner is on
•
when the room thermostat is closed (heat demand)
•
and when the actual flow temperature is 5°C below the
set point (desired central heating flow temperature)
•
and after 3 minutes anti-reciprocital time, if applicable
O/b-value: The setting of the minimal Heating flow temperature (
value in °C).
O/S-value : The setting for the sloop of the curve.
( change of Flow temperature depending on the change of the
outside temperature).
Burner is off
•
when the room thermostat is open (end of heat
demand)
•
when the actual flow temperature is 3°C above the set
point (blocking)
•
or when the actual flow temperature is 3°C above the
maximum permissible central heating temperature.
O/d-value : The setting of the flow temperature at an outside
temperature of 20°C ( value in °C).
Parameter „C“
The setting in the menu „C“ makes the maximal heating flow
temperature ( default 82°C).
During the set central heating post-running time, the pump will
continue to run over the central heating circuit in low load.
5.1.2. Central heating temperature regulation with on/off
thermostat with outside temperature sensor
Set point
The desired central heating flow temperature (set point) is
calculated on the basis of the measured outside temperature
and the [O/S] - [O/d] - [O/b] parameters set in the menu.
Letter
in
Description
menu
O/b
Basic temperature
O/S Slope
O/d
Flow temperature at
outside = 20°C
C
Max. Flowtemp. for
central heating
Range
default
10 –70 °C
1 – 100
0 –70 °C
20 °C
20
20°C
25 –90 °C
82°C
Burner is on
•
when the room thermostat is closed (heat demand)
•
and when the actual flow temperature is 5°C below the
set point (desired central heating flow temperature)
•
and after 3 minutes anti-reciprocital time, if applicable,
after a reciprocital stop
Burner is off
•
when the room thermostat is open (end of heat
demand)
•
when the actual flow temperature is 3°C above the set
point (blocking)
•
or when the actual flow temperature is 3°C above the
maximum permissible central heating temperature.
During the set central heating post-running time, the pump will
continue to run over the central heating circuit in low load.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
5.1.3. Central heating temperature regulation with
modulating thermostat (Opentherm) with or without outside
temperature sensor
Set point
The set point indicates whether there is a heat demand.
- Without an outside temperature sensor, the desired central
heating flow temperature (set point) is calculated by the
modulating room thermostat.
- With an outside temperature sensor, the measured outside
temperature is sent to the modulating room thermostat, which
uses it to calculate the desired central heating flow temperature
(set point).
Burner is on
•
when the room thermostat is closed (heat demand)
•
and when the actual flow temperature is 5°C below the
set point (desired central heating flow temperature)
•
and after 3 minutes anti-recycling time, if applicable
Burner is off
•
when the room thermostat is open (end of heat
demand)
•
when the actual flow temperature is 3°C above the set
point (blocking)
•
or when the actual flow temperature is 3°C above the
maximum permissible central heating temperature.
During the set central heating post-running time, the pump will
continue to run over the central heating circuit in low load.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 6. BURNER STATES and MONITORING
Standby
Pre rinse
Ignition
In operation
Post rinse
Pump
afterrun
Standby
heat demand
fan
gas valve
glow plug
ionisation
pump
t=0sec
t=3sec
t=7sec
t<12sec
6.1. Standby
Fan:
Fan off - Gas valve off – Glow plug off - Ionisation off
The fan is switched on at the desired purging speed.
After a few seconds, the fan goes from purging speed to the
faster ignition speed.
During the standby, a check is made to see if there is burner
demand. If so the boiler will go over to pre rise.
Glow plug:
The glow plug is switched on at the same time as the fan.
If the glow plug counter is too high (the boiler made too many
starts repeatidly) the regulation blocks the burner demand.
The display shows flashing ‘5’.
When the measured fan speed deviates from the desired speed
the regulation blocks.
After 60 seconds the regulation runs into lock-out, with flashing
indication ‘5’.
Once per hour, if there is no heat demand, the difference
between flow and return temperatures must be less than ± 5°C.
If this is not the case, the pump will be switched on and a check
will be made for a maximum of 10 minutes to see whether the
temperature difference goes to within ± 5°C.
6.3. Ignition
The display shows flashing ‘8’.
If a false flame signal is detected during standby for more than 5
seconds, the regulation runs into lock-out with flashing indication
‘8’:
Fan on - Gas valve on - Glow plug on/off - Ionisation off/on
The fan is running at the ignition speed. The gas valve is
activated. The glow plug ignites the gas / air mixture from the
burner. The glow plug will be switched off as soon as an
ionisation signal is measured.
6.2. Pre rinse
Fan on - Gas valve off - Glow plug on - Ionisation off
If there is no ionisation at the end of the safety time, a new
attempt at ignition will be made if this was not the last permitted
(third) attempt at starting.
The difference between flow and return temperatures must be
less than 20°C before each burner start.
Pump:
At each new heat demand first the pump is switched off for 3
seconds and the water pressure (static pressure) is measured
and stored in the software.
Then second the pump is switched to high speed and the water
pressure (active pump pressure) is measured and stored in the
software.
6.4. In operation
Fan on - Gas valve on - Glow plug off - Ionisation on
Temperature test:
To ensure the water flow through the heat exchanger a
temperature test is activated.
The difference between flow and return temperatures must be
raised by 3°C within 20 seconds after each burner start.
If the difference between the active pump pressure and the static
pressure is between 0.05 and 0.54 bar a correct water flow
throuhg the heat exchanger is present and the ignition time
starts.
If the difference is less than the previous temperature difference,
the burner is started again after 10 seconds.
If this lock occurs more than three times within a heat demand,
the regulation locks with ‘1’.
If the difference is less than 0.05 bar or more than 0.54 bar the
regulation locks. The display shows ‘P’. The regulation runs into
the “pump test program”.
If the difference between flow and return temperatures becomes
less than –5°C during burning, the regulation locks.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
6.7. Pump test program
Fan:
The fan is running at the required speed for modulating heat
demand.
When the measured fan speed deviates from the desired speed,
post rinse will be performed.
The display shows continious ‘P’.
The pump is switched off for 15 seconds. The system water
pressure (static pressure) is measured and stored in the
software.
Then the pump is switched to high speed for 15 seconds and 3
seconds after the pump is switched on the water pressure
(active pump pressure) is measured and stored in the software.
Ionisation:
If the ionisation fails, a restart is made, providing this is not the
third time within the burner demand. If this is the third time, the
Manager will lock-out.
If the difference is less than 0.05 bar or more than 0.54 bar the
regulation locks again.
Pump monitoring:
If the temperature difference between flow and return is greater
than 30°C, the pump switches to a high speed. When the
temperature difference drops below 10°C again, the pump
switches back to a low speed.
If the pump is on for a HWS demand with a Combi-unit or for
cylinder heat demand, the pump is continuously at high.
If the difference between the active pump pressure and the static
pressure is between 0.05 and 0.54 bar a correct water flow
throuhg the heat exchanger is present. The pump test is
finished.
6.8. System pressure monitoring
If the system water pressure changes by more than ± 0.1 bar (
and ± 0,3 bar with changing pump speed) within 4 seconds, the
regulation will block and switch over to the pump test program.
This test is defeated for 16 seconds with switching over from
central heating to hot water operation and reverse.
The boiler is in working mode when the system water pressure is
between 0.5 and 3.0 bar.
With a water pressure between 0.2 and 0.5 bar, the burner is
limited to low load.
If the water pressure is less than 0.2 bar, the regulation locks
with a ‘P’ + ‘pressure’ on the display. The display shows
alternately the ‘P’ and the normal status display.
This lock is removed when the water pressure goes above 1.3
bar.
6.5. Post-rinse
Fan on - Gas valve off - Glow plug off - Ionisation off
End of heat demand:
At end of heat demand (burner stop) the regulation runs into
post-rinse. The fan runs at the last demanded speed.
If the water pressure is greater than 3.0 bar, the regulation locks
with a ‘P’ + ‘pressure’ on the display. The display shows
alternately the ‘P’ and the normal status display.
This lock is automatically removed when the water pressure
goes below 3 bar.
The display shows flashing ‘5’.
When the measured fan speed deviates from the desired speed
the regulation blocks.
After 60 seconds the regulation runs into lock-out, with flashing
indication ‘5’.
6.10. Temperature regulation
The display shows flashing ‘8’.
If a false flame signal is detected during post rinse for more than
5 seconds, the regulation runs into lock-out with flashing
indication ‘8’:
The operation can only be restored by pressing the reset button,
placed on the control panel.
Burner is off when the actual flow temperature is 3°C above the
set point ( desired central heating flow temperature 25°C 90°C). The block is removed with an actual flow temperature of
5°C below the set point.
If the temperature difference between flow sensor and return
sensor is greater than 45°C, the regulation blocks. The block is
removed with a difference of less than 20°C.
6.6. Lock-out
If the temperature difference between flow and return sensor is
less than –5°C, the regulation will lock immediately during
central heating and 20 seconds after ignition during tapping.
Fan on/off - Gas valve off - Glow plug off - Ionisation off Alarm contact on
During lock-out, the pump runs over the central heating circuit.
At the beginning of the lock-out, the fault table in the software is
updated.
With some instances of lock-out, the fan will post rinse for 1
minute at 50% of the maximum speed.
6.11. Limiter
The display shows continuous ‘H’.
If the flow temperature goes above 105°C, when the burner is
off, the regulation will lock with a continuous ‘H’.
Burner action is restored automatically when the actual flow
temperature is 5°C below the set point (desired central heating
flow temperature 25°C - 90°C).
The display shows flashing ‘H’.
If the flow temperature goes above 105°C, when the burner is
on, the regulation will lock-out with a flashing ‘H’.
The lock-out situation can be removed by pushing the reset
button manually.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
6.12. Flue sensor
Switching the supply voltage on makes the flue sensor active.
If the flue sensor measures a temperature below –25°C, the
regulation locks with the message flue sensor interruption (‘4’).
Low load:
If the flue gas temperature goes above 80°C, the burner is
limited to low load.
If the flue gas temperature goes below 70°C, the blocking
actions will be automatically removed.
The display shows continuous ‘A’:
If the flue gas temperature goes above 90°C, the regulation
blocks with continuous ‘A’.
If the flue gas temperature goes below 70°C, the blocking
actions will be automatically removed.
The display shows flashing ‘A’:
If the flue gas temperature goes above 95°C, the regulation runs
into lock-out with flashing ‘A’.
6.13. Frost protection
If the flow sensor temperature is below 8 °C ( and if there is no
heat demand) the pump runs into the heating mode and the
display shows ‘o’.
If the flow temperature goes below 3 °C, the regulation starts the
burner to low load.
When the return sensor temperature is above 15 °C, the frost
protection is finished.
When an external sensor is connected and the outside
temperature is below –4 °C, the pump runs into the heating
mode. This situation is removed at an outside temperature of –2
°C.
6.14. Glow plug protection
The glow plug protection counter is incremented at each ignition.
This counter is decremented per minute.
If this counter is too high, to protect the glow plug for overheating
by to many start attempts repeatedly, the boiler start is delayed.
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Coopra Advanced Heating Technologies
Installation manual 40 EN
CHAPTER 7. MAINTENANCE
7.1.3. Checking the condensation water drain
There is an opening for this
purpose on the top of the vapour
tray. First remove the rubber
sealing plug; rinse the vapour tray
and drain with clean tap water.
When no more impurities are
removed, the vapour tray is clean.
Also clean the trap.
High voltage! ! !
The wiring of the pump, the three-way valve, fan and
wiring of the gas block can be under a voltage of 230
VAC.
Serial connection
A
PC
or
Lapt
op
can
be
con
nect
ed for an extensive diagnosis and display of the functionality.
The necessary cable (which contains an electrical isolation) and
software can be ordered as options.
7.1.4. Ionisation probe
The ionisation probe is a part that wears. An insulating layer can
be formed in the flame at high
temperature. This layer can be
removed with fine sandpaper. Do
not clean the ionisation probe
with coarse sandpaper, because
grooves in the surface of the pin
will accelerate the formation of
the layer.
7.1. ANNUAL MAINTENANCE
Full load:
Correct ionisation current between 6 µA DC to 13 µA DC.
Low load:
Correct ionisation current between 3µA DC to 13 µA DC.
After the first year, have a recognised installer or maintenance
man inspect the unit. He can ascertain the maintenance
deadline on the basis of the inspection and circumstances. A
certified (SCIOS) installer should inspect the unit annually.
Unplug the plug of the ionisation probe (low voltage). Remove
the two screws from the ionisation clamp. Remove the ionisation
probe from the cover and check the ionisation probe. The
ionisation probe must be straight and clean (a slight deposit is
normal), Clean or replace the ionisation probe.
7.1.1. Checking the CO2 percentage on full load
The nominal value for natural gas
at full load is 8.8% CO2.
7.1.5. Water pressure
Check the water pressure; top up and de-aerate as necessary.
Press the ‘plus’ button in for at least 5 seconds to see the actual
water pressure in bar on the display.
Press briefly on the ‘min’ button to return to operational mode.
The unit does not need to be
cleaned if the measured CO2
percentage at full load is within
8.8% CO2 and 9.4% CO2.
7.1.2. Measuring the load on the unit
A load drop can be the consequence of a clogged flue gas
channel or a clogged air intake channel. Check whether this is
the case by measuring the load on the unit. First set the central
heating capacity "P" to 100% in the menu. Let on the unit burn
on chimney sweeper function at full load. Measure the gas
consumption. If the ascertained
deviation in load is no more than
15% of the nominal value, the flue
gases can be sufficiently
exhausted and there is no
clogging. At the end of the check,
reset the central heating capacity
"P" in the menu to its customerspecific value.
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8.7. Check function of gas control
CHAPTER 8. MALFUNCTIONS
High voltage!
The wiring of the pump, the three-way valve, fan and wiring of
the gas control can be under a voltage of 230 VAC.
8.1. Draining the unit
•
On the central heating side: Switch the unit off and
open the filling tap.
•
On the HWS side: Switch the unit off. Shut the inlet
combination off. Open a hot water tap and the
protection device of the inlet combination.
When using the group of taps (see the accessory list), it is
possible to only tap the unit. Proceed as follows:
Switch the unit off.
Close all taps under the unit.
Close the inlet combination
Open the filling tap under the unit.
Open a hot water tap.
Open the protection device in the unit and of the inlet
combination.
Open the outlet pressure measurement nipple of the gas control
- connect the pressure meter to the outlet pressure
measurement nipple
- measure the pressure (this must be zero)
- start the unit.
- the unit will now be rinsed at 1500 rpm
- next, the fan starts at the initial speed of 3000 rpm.
- the pressure meter will now indicate an underpressure of
approximately 3 mbar
- when the gas control is opened, the zero pressure regulator will
again make zero pressure.
- if not, then the gas control is not functioning.
8.2. No signal on the display
If there is no signal on the display, check if the mains voltage of
230 VAC is present on the unit.
There must be voltage of 230 V on the live connection "L" and
no voltage on the neutral connection "N".
Check whether the on/off switch on the bottom of the unit is
switched on.
8.8. Measuring the fan impedance
Check the resistance of the coil, the two outermost contacts on
the fan motor.
The value that the multimeter
shows must be between 115 and
120 Ohms at room temperature.
Check the glass fuse on the printed circuit board Careful, high
voltage! The fuse is placed on the printed circuit board in the
230 V circuit. So first disconnect the unit mains!
8.3. Fault code 'U/d or U/O' (alternating U with a status code
will appear on the display)
This fault code occurs when the Live and Neutral are exchanged
or when no Earth is present.
Reverse the plug so that the Live is connected to Live and
Neutral to Neutral.
If the fan is defective, the drive on
the drive on the Manager may also be damaged.
8.9. Fitting instructions for the pressure sensor
The seal is made with an “0”-ring. The pressure sensor must
only be tightened slightly more than hand tight.
8.4. Unit does not respond to central heating heat demand
Is the parameter for the type of unit correctly set in the menu?
•
Parameter H = 1 is not active ( no heating).
•
Parameter H = 4 is not active ( no heating).
•
Parameter H = 5 is not active ( no heating).
8.10. Fitting instructions for the safety valve
The safety valve must be tightened with a torque of 10 Nm.
Check for correct assembly and/or cable fracture of the wiring of
the room thermostat (terminals 1 and 2) of the terminal block)
and, if applicable, the external sensor (terminals 5 and 6) of the
connection to the building management system (terminals 3 and
4).
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Installation manual 40 EN
8.11.4. Gas/air mixture is not correctly adjusted
8.11. Malfunction code 'F' (flashing)
After three failed attempts in a row, the unit will lock (flashing 'F').
This can have very different causes:
•
no gas
•
no ignition
•
bad flame formation
•
bad ionisation current
see Chapter 4. : Adjustment full load and low load.
8.11.5. Check glow plug
The 230 volt glow plug is in order if the measured resistance at
room temperature is about 1.0 - 1.4 kOhm.
•
remove the connection of the glow plug (230 V)
•
connect a multimeter
•
measure the resistance
8.11.1. Gas control will not open (no voltage)
Careful !!! 210 VDC
Replacing the glow plug
If the gas control is not
connected, the Manager will see
this at the beginning of the heat
demand as a malfunction and
therefore lock.
To measure the voltage on the
gas control, the gas control must
remain connected.
During the starting period, the gas
control is connected to a voltage of 210 VDC.
Careful !!! 230 VAC
The glow plug is a resistance through which current is fed. As a
result of the high temperature of the glow plug, the burner can
be ignited. This makes the glow plug a part that wears. The
average life of the glow plug is estimated at 8 years, depending
on the number of starts and on the variation of the mains
voltage.
•
remove plug from glow plug (230 V high voltage)
•
remove glow plug from cover of unit
•
replace glow plug
8.11.2. Gas control will not open (gas inlet pressure too
high)
The gas pressure in the gas pipe
before the gas control is too high.
The safety valves of the gas
control cannot open with gas
pressures of >60 mbar.
•
•
8.11.6. Check ionisation current
When the unit burns on chimney sweeper function, the ionisation
current can be read directly on the display.
•
Ionisation current in full load is correct between 6 µA
DC to 13 µA DC.
•
Ionisation current in low load is right 3µA DC to 13 µA
DC.
•
open the inlet pressure
measurement nipple of the gas control
connect the pressure meter
measure the gas pressure (10 - 50 mbar)
8.11.3. Gas control will not open (coils defective)
The electrical coils of the gas
control are burnt out and the
safety valves of the gas control
will therefore not open.
•
•
Insulating layer
With high temperature flame, an
insulating layer can be formed on
the probe. This layer can be
simply removed with fine
sandpaper. However, coarse
grooves in the surface of the pin
will accelerate new formation of
the layer.
The two outermost contacts on the gas valve should be
measured for resistance
the value that the multimeter shows should be about
4.1 kOhm at ambient temperature.
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8.11.7. Inspection / cleaning / replacement of the ionisation
probe
•
•
•
•
•
•
unplug the plug of the ionisation probe (low voltage).
remove the two screws from the ionisation clamp.
remove the ionisation probe from the lid of the unit.
check the ionisation probe.
the ionisation probe must be straight and clean (a slight
deposit is normal).
clean or replace the ionisation probe.
8.11.8. Ionisation probe or ionisation cable makes short
circuit with earth
The negatively charged ions created by the burner form the
ionisation current to earth. if there is short circuit to earth, the
Manager cannot measure any current.
Repair short circuit.
8.11.9. Boiler pump
The boiler pump transports the system water through the primary
heat exchanger for heating the system.
If the temperature difference between flow and return is greater
than 30°C, the pump switches to a high speed. When the
temperature difference drops below 10°C again, the pump
switches back to a low speed.
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Installation manual 40 EN
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Installation manual 40 EN
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Coopra Advanced Heating Technologies
Installation manual 40 EN
2007 Coopra Advanced Heating Technologies b.v.
All rights reserved.
Nothing from this document may be duplicated and/or made public by means of printing, photocopy, microfilm or in
any other way without prior written permission from the manufacturer. This also applies to the appropriate drawings
and/or diagrams.
The information supplied in this document is based on general data with regard to constructions, material
characteristics and working methods known at the time of going to print. Therefore, we reserve the right to make
changes without notification. For this reason, the instructions given serve only as a guideline for the installation, use
and maintenance of the unit shown on the cover of this document.
This document is valid for the unit in its standard version. Therefore, the manufacturer cannot be held liable for any
damage arising from specifications that deviate from the standard version of the unit delivered to you.
This document has been compiled with all possible care. However, the manufacturer cannot be held liable for any
mistakes in this document or for any consequences.
Take the time to read this document carefully before installing or using the unit. Always keep this
document near the unit.
COOPRA Advanced Heating Technologies b.v.
Vierlinghstraat 14
NL 3316 EL Dordrecht
Tel: +31 (0) 78 – 653 08 30
Fax: +31 (0) 78 – 653 08 33
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