flamco ENA 7 User manual

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Ena 7-30
ENG Installation and operating manual

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 32
ENG
Table of Content
1. General .................................................................................................................. 4
1.1. About this manual.........................................................................................................................4
1.2. Other supplied documentation ....................................................................................................4
1.3. Use of Flamco products.................................................................................................................4
1.4. Further help and information........................................................................................................4
2. Safety .................................................................................................................... 4
2.1. Intended use .................................................................................................................................4
2.2. Important information ..................................................................................................................4
2.3. Signs in this manual.......................................................................................................................5
2.4. Specifications.................................................................................................................................5
2.5. Safety devices ................................................................................................................................5
2.5.1. Avoiding excessive pressure ..................................................................................................................................6
.5.2. Avoiding excessive temperature .............................................................................................................................6
2.6. Signs on the automat.....................................................................................................................6
3. Description............................................................................................................. 7
3.1. Component overview ....................................................................................................................7
3.2. Controller SCU ...............................................................................................................................8
3.3. Working principle...........................................................................................................................8
3.3.2. Make-up operation..................................................................................................................................................9
4. Transport and storage............................................................................................ 10
4.1. Transport......................................................................................................................................10
4.2. Storage .........................................................................................................................................10
5. Installation........................................................................................................... 11
5.1. Prepare for installation................................................................................................................11
5.2. Ambient conditions .....................................................................................................................11
5.3. Hydraulic installation...................................................................................................................12
5.4. Electrical installation ...................................................................................................................12
5.5. Basic electrical connection..........................................................................................................13
6. Startup controller ...................................................................................................... 15
6.1 Controller menu structure...........................................................................................................15
6.2 Menu symbols ..............................................................................................................................15
6.3 Working principle controller.......................................................................................................16
6.4. Controller inputs..........................................................................................................................17
7. Maintenance and troubleshooting........................................................................... 18
7.1. Before maintenance ....................................................................................................................18
7.2. Aer a power failure.....................................................................................................................18
7.3. Maintenance interval ...................................................................................................................18
7.4. Change the automat for water treatment...................................................................................18
7.5. Error message ..............................................................................................................................19
8. Disposal ............................................................................................................... 21
9. Technical specification ............................................................................................... 21
9.1 Additional accessories ................................................................................................................22
Appendix 1. Commissioning .......................................................................................... 23
1.1. Commissioning ENA 7-30 ............................................................................................................23
1.2. Parameterisation for commissioning .........................................................................................23
Appendix 2. Items of the hardware and parameter menu.................................................. 24
2.1. Operating modes ...........................................................................................................................24
2.1.1. Fast/Turbo ..............................................................................................................................................................24
2.1.2. Normal ....................................................................................................................................................................24
2.1.3 .Hand ........................................................................................................................................................................24
2.2. Control modes ................................................................................................................................25
2.2.1. Level-controlled [%] .............................................................................................................................................25
2.2.2. Pressure-controlled [P] ........................................................................................................................................25
2.2.3. Filling o .................................................................................................................................................................25
2.3. Monitoring ......................................................................................................................................25
2.3.1. Make-up quantity (monitoring) .........................................................................................................................25
2.3.2. Pressure monitoring .............................................................................................................................................26
2.3.3. Monitoring of quantity of water to be treated ................................................................................................26
Appendix 3. Menu descriptions ...................................................................................... 27
3.1. Hardware menu ..............................................................................................................................27
3.2. Parameter menu ..........................................................................................................................28
3.3. Service menu ..................................................................................................................................29
Appendix 4. Examples................................................................................................... 31
4.1. ENA 7-30 with NFE1.1 and a diaphragm expansion vessel in a heating system............................31
4.2. ENA 7-30 with NFE1.2 and a compressor controlled pressure level in a heating system .............31

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 54
ENG
1. General
1.1. About this manual
This manual includes technical specifications, instructions and explanations that helps to use this
automat safely. Read and understand all the instructions before you transport, install, commission,
restart, operate or maintain the automat.
1.2. Other supplied documentation
General information of additional components, such as the pump and the sensors, is included in this
manual. If additional documentation is supplied, also follow the instructions in those.
1.3. Use of Flamco products
According to order or execution complementary documentations can be added. Follow the positions
performed in the dispatch papers.
1.4. Further help and information
Contact your local supplier for additional services as:
• Training.
• Maintenance agreements
• Service contracts.
• Repairs and improvements.
2. Safety
2.1. Intended use
The automat is designed for deaerating and feeding make-up water in closed heating and in cooling
water systems.
The automat is not designed for the initial filling or re-filling of systems.
2.2. Important information
The automat has safety devices intended to prevent injury and damage. Use the automat in the
following way:
Have the installation be carried out by qualified personnel.
• Comply with local legislation and guidelines.
• Do not make modifications to the automat without prior written permission of Flamco.
• Make sure that all automat covers and doors are closed when operating the automat.
• Do not touch live voltage. The sensor units and the capacity pressure sensors operate with extra
low safety voltage.
Flamco shall not be liable for any losses arising from the non-observance of safety conditions or as a
consequence of the disregard of standard precautionary measures when performing such services as
transport, installation, commissioning, re-starting, operation, maintenance, testing and repair, even in the
event that these are not expressly described in these instructions.
2.3. Signs in this manual
Identifies a hazard that could
lead to personal injury including
death/damage to the automat,
damage to other equipment and/or
environmental pollution.
Identifies an electric hazard that
could lead to personal injury
including death/ damage to
the automat, damage to other
equipment and/or environmental
pollution.
Earthing Important information
2.4. Specifications
The construction of the automat is designed in accordance with the norms DIN EN 12828.
2.5. Safety devices
The automat does not contain any safety components that prevent that the operation pressure
and the operation temperature range are exceeded or go below a limit. Install components for the
limitation of pressure and temperature in the system.

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 76
ENG
2.5.1. Avoiding excessive pressure
Appropriate safety valves that prevent that the maximum operation pressure is exceeded:
• Open not later than the maximum allowable working pressure is reached.
• Can conduct the occurring volume flow (including the maximum possible refilling volume) up to
the 1.1-fold of the maximum operation pressure;
• Have a proven reliability or are certified.
Do not narrow the inlet or outlet piping of the safety valve.
2.5.2. Avoiding excessive temperature
Appropriate safety components:
• Guarantee that the operation temperature range is not exceeded at any point of the system;
• Are approved and tested on operation safety.
Activate the pressure and temperature safety devices and check them regular on
proper working.
2.6. Signs on the automat
The signs on the automat are part of the safety provisions. Do not cover or remove the signs. Inspect
regularly if the signs are present and legible. Replace or repair signs that are illegible or damaged.
A
B
C
D
On the type plate the following
product information can be found:
A: Automat type (ENA 10, 20 or 30)
B: Automat serial number
C: Permissible working overpressure
D:Permissible working temperature
Do not use the automat
when the
specifications on the type
plate dier from the order.
3. Description
3.1. Component overview
8 9
15
16
↑
↓
ENA 30
1
4
10
11
12
13
14
5 8 9
2
7
6
3
↑
↓
ENA 7-20
NO. Description
1 Vent. device 9 Connection to system Rp 1"
2 Pressure gauge 10 Connection from system Rp 3/4" *
3 SCU controller 11 Terminal box pump 1
4 Vacuum tank 12 Pump 1
5 Vacuum pressure switch 13 Connection for refill Rp 3/4"
6 Solenoid valve N.O. 14 Solenoid valve N.C.
7 Float switch 15 Terminal box pump 2
8 Pressure sensor 16 Pump 2

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 98
ENG
3.2. Controller SCU
NO. Description
1 Control panel for the controller, graphical
display, LED for error display, selector switch
(click and roll)
2 Power switch, ON: flashes red
3 Internal fuse F1: T 16 A 250 V
4 Internal fuse F2: T 3,5 A 250 V
5 Hardware release, service menu E2
6 Terminal bars for
• Electric supply;
• Sensors;
• Impulse water counter;
• External activation for refilling process;
• Collective malfunction message;
• Pump.
7 Interface RS485.
1
2
3
4
5
6
7
3.3. Working principle
The automat serves primarily as an active deaerating device. In addition as a make-up device for
re-filling the water
losses in a system.
3.3.1. Deaeration
For deaerating the water, the system water is drawn
in via a bypass from the return line of the system
(H). The water is run through a flow regulator (G)
and the strainer (F) into the deaeration tank (C). It is
subjected to a vacuum during the cyclic running of
the pump (D) and passed through a Pall-ring (E). As a
result of the lowered pressure, and the large surface
of the Pall-ring, air dissoleves from the water.
When the pump switches o, the replenishing medium flowing into the tank causes the pressure in
the tank to increase to the level of the system pressure so that the air which has accumulated above
the water level is discharged via the vent. device (A). While the pump is running, the water quantity
supplied into the tank is returned via a bypass line to the return branch (B) of the system.
P
P
H
F
G
C
A
B
E
D
Fast deaeration mode (Fast = Turbo): An interval during which the pump is running (vacuum is
forming) alternates with an interval during which the air
is discharged (pump is stopped).
Normal deaeration mode: An additional pause is added between the end of the
evacuation interval and the starting of the pump. This
additional interval can be selected via a parameter within
fixed limits. Upon expiry of the deaeration interval, the
system changes to the normal deaeration mode, which
then takes place continuously. The normal deaeration
mode is interrupted by a selectable pause (by default
06.00 p.m. - 08.00 a.m.). The beginning of the next
deaeration cycle taking place in the normal deaeration
mode is indicated via a countdown in the Process menu.
3.3.2. Make-up operation
The make-up water is supplied in a pressure-controlled or level-controlled mode. The automat is set
by default to pressure-controlled refilling (if a diaphragm expansion vessel is used).
Pressure-controlled supply: The system is equipped with a pressure sensor (P) for
sensing the pressure. The make-up activating pressure
should be Po* + 0.2 bar. The make-up deactivating
pressure must be at least 0.1 bar higher than the make-
up activating pressure. The make-up water flow rate or
feed time can be monitored, if the system is fitted with
a litres counter. The pump (D) must be automatically
stopped cyclically during pressure-controlled refilling,
and the actual system pressure must be checked and, if
necessary, additional water must be supplied until the
make-up deactivating pressure is reached.
Level-controlled supply: In this case, make-up water is supplied as long as the
external make-up request is active and the flow-rate and
time monitoring feature of the automat allows making up
to take place.
It is possible to deactivate the make-up function. Refer to chapter 6.1.
* Po = P Static + P Steam

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 1110
ENG
4. Transport and storage
4.1. Transport
The shipping papers list all the items, such as equipment and documentation. Ensure that the
delivery is complete and not damaged. The automats are packed horizontally on disposable pallets
and are fully assembled.
Identify the items that are missing or not correctly delivered. Read the general terms
and conditions in the shipping papers.
• Transport the pallets horizontally.
• Li the automat just slightly.
Identify the items that are missing
or not correctly delivered. Read the
general terms and conditions in
the shipping papers.
4.2. Storage
Make sure that the storage space meets the
ambient conditions. Refer to section 6.2.
• Take care for an even floor.
Do not stack up.
5. Installation
5.1. Prepare for installation
Make sure that the surface can support the maximum weight of the automat, including
the water.
Refer to chapter 9: Technical specifications
• The automat may not be aected by external forces.
• No dirt may get into the automat and its accessories.
• Install shut-o devices to the drinking water net on-site.
• Plan enough free space around the automat for maintenance work.
• Note the eective regulations regarding the use and the installation location and, if necessary,
inform the responsible testing and certification bodies prior to the launch of the system
5.2. Ambient conditions
> 0,5 m
> 0,5 m
> 0,5 m
< 80%
> 0 °C.....40 °C (ENA 7)
45 °C (ENA 10-30)
Make sure
• that the automat is level;
•that the automat is installed in a closed, dry and frost-
free room;
• to maintain the minimum distances as indicated;
• that the atmosphere does not contain electrically
conducting gases or high concentrations of dust and
vapors. Risk of explosion when there are combustible
gases;
• that the vicinity is clean and well lit.
- Relative humidity: not condensating.
- Free of vibrations.
- Free from heat- and solar radiation.
• that the automat is free from additional loads

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 1312
ENG
5.3. Hydraulic installation
• Install the shut-o devices on-site in front of the tube joints.
• Only work on non-pressurised and cooled-down pressure joints.
A
B
A
B
A
B
• Connect the supply line
to the refilling supply. If
necessary, install a dirt trap at
the drinking water joint
(0.2 mm).
• Connect the return line of the
system to the inlet of the ENA.
• Connect the supply line of the
system to the pressure side of
the ENA
• The minimum nominal
diameter for the installation
line of the system and the
supply line is DN 20
5.4. Electrical installation
There can be life voltage on the terminal bars even when the main power supply is
disconnected.
Make sure all external power supplies (e.g. external refill equipment) are also
disconnected from the automat.
OFF
Switch o the power switch on the
controller SCU.
Unscrew the protective cover of
the terminal box.
Pull the power plug or switch o
external separators and secure
these against a restart.
The descriptions of the terminal
bars are on the inside of the
protective cover.
5.5. Basic electrical connection
ENA 7 ENA 10
Nominal voltage 230 V: +6%; -10%; 50 Hz: +1%; -1%
Nominal current 2.77 A 5.3 A 7.2 A 10.6 A
Nominal power 0.62 kW 1.1 kW 1.51 kW 2.2 kW
Safety current 10 A 16 A
Protection type IP55 IP54 (pressure sensor IP65)
SELV: Safety Extra Low Voltage
* Recommended value; Line safety switch (C).
Never connect terminal 11+12 and 21+22 at the same time.
It will destruct the refill the SCU controller or the pressure holding control.
28 29 30 31 32 33 34 35 36
27 2625 24
98 7 6 5 4 3 2 1
10 11 12 13 14 15 16 17 18
20 1923 22 21
F
G
D
E
N.C.
N.O.
RS485
RS485
230 V
50 Hz
NFE1.1 / NFE1.2
m3
L
DBA
E
F
G
C
C
SELV
A
B
Pressure sensor
Impuls Water meter
Pump 1
INPUT
External
e.g. M-K/U
(Refill 230 V)
INPUT
Pump 2 (ENA 30)
Vacuum pressure switch
Float switch
Solenoid valve
Solenoid valve
Common
failure
External
refill
(for potential
free contact)
Gas sensor

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 1514
ENG
9 8 7 6 5 4 3 2 1
Solenoid
valve N.O.
yellow/
green
blue brown
Solenoid
valve N.C.
yellow/
green
blue brown
Mains yellow/
green
blue brown
10 11 12 13 14 15 16 17 18
External refill yellow/
green
blue brown
Pump 1 yellow/
green
blue brown
Pump 2 yellow/
green
blue brown
27 26 25 24 23 22 21 20 19
Vacuum
pressure switch
brown blue
Float switch brown white
External refill gray gray
Common
faillure
gray gray
28 29 30 31 32 33 34 35 36
Solenoid
valve N.O.
brown yellow
Solenoid
valve N.C.
brown blue
Mains red white
6. Startup controller
6.1 Controller menu structure
Process display
Process display
(Symbols)
System pressure
Operating mode
Filling quantity
total
ASystem
Error
Contole mode
Process display
B
1View
2Enter
3Back
Selection menu 1
D
1Hardwaremenu
2Parameter menu
3Service menu
4Back
Selection menu 1
E
1Project number
2Soware version
3Start
4Maintenance
5Error list (Passive)
6Value statistics
7Operating hours
8Refill statistics
9Change entry code
10 Change access code
11 Data transfer
12 Back
Parameter menu
F
1Duration of turbo
2Pause normal degas.
3Degassing
4Automatic degassing
5System pressure
6Special system press
7Litres counter
8Water treatment
9Re-filling quantity
10 Time, Date
11 Other
12 Other internal
13 Back
Hardwaremenu
G
1ID-Number
2ID-Number
3Litres counter
4Water treatment
5Control mode
6Operating mode
7Sensor
8Motor protection
9Common failure
10 Back
Code menu
K u 1 K u 1 FL 1 FL 2
Error list, activ (Acknowledge)
A
A
BD D
D
SYSTEM CLASSIFICATION SYSTEM DATA SYSTEM CONFIGURATION
6.2 Menu symbols
ID No ID number available. Controller not configured. Pump
Denied, not installed.
Outside parameter limits. Float switch.
P
Refill is pressure controled Entry confirmed.
Code required Programming mode, enter.
%Refill is level controled. Test mode.
Solenoid valve. Warning.
No intervention possible Save error. Settings not saved.
Operating mode, view only. Wait.
Vacuum switch. External refiil signal is connected (level controled
operation only).

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 1716
ENG
6.3 Working principle controller
A B C D
-h Turbo
--- bar
P
------ ---
--:--
2 sec...
System
Start
Liter
-h Turbo
--- bar
p
------ ---
--:--
-h Turbo
--- bar
P
------ ---
--:--
System
Start
Fehler
Start
Liter
Start up
•Switch o an installed refill equipment.
Close the inflow valves.
• Switch on the controller (D).
A Display
B Error LED
C Navigation wheel
D ON/OFF switch controller
Use the navigation wheel (C) to navigate
through the menus an to confirm the input.
The display (A) shows the menus. In case of
errors the error LED (B) is on.
• Hold down the navigation wheel for two
seconds to
go to the process display, whatever the cursor
position.
* Turbo = Fast
• In case of errors the process display switches
from [SYSTEM] to [ERROR] and the LED is on.
• The error messages, minimum water level,
minimum pressure alarm are consistent by the
first start of opertion.
• It is possible to turn the wheel to switch
between [SYSTEM] and [ERROR].
• When [ERROR] is displayed press the wheel
to go to the error list. In case of more than one
error, scroll through the errors. All errors are
shown in accordance of appearance.
• When [SYSTEM] is displayed, press the wheel
to go to the option menu.
* Turbo = Fast
6.4. Controller inputs
B 2
System
G5 3
D 1
Hardware
Parameter
Service
Back
F5 5
Back
G 2
ID number
Language
Litres counter
V iew
Back Water treatment
Level controlled
Back
G2 1
Deutch
Nederlands
English
Français
F 5
System pressure
Special syst.pres s
Litre/pulse
Water treatment
G 2 19
Dansk
Suomi
Maggar
Back
G2 7
Polski
Dansk
Suomi
Maggar
F 10
Water treatment
Filling quantity
Time, date
Other
G 5
Language
Liters counter
Water treatment
Control mode
F5
Fillcommand on
D 2
Hardware
Parameter
Service
Back
X,x bar
Fillcommand on
Save Back
X,x bar
X,x
X,x
Save
19.05.07
10:15:28
Save Back
30.07.07
13:36:0 0
Save Back
30.07.07
13:36:00
Back Back
30.07.07
13:36:00
Save
1
Start
Back
Press. controlled
Level controlled
G5 4
2
X,x bar
Fillcommand o ff
F5
X,x
X,x
bar
X,x
Fillcommand on
X,x
X,x
bar
Save Back
Fillcommand o ff
Fillcommand o ff
Save Back
X,x bar
X,x
X,x Water treatment
Litre/pulse
Special syst.press
F 5
Maintenance
Soware version
Projekt no.
E 3
G 10
Sensor
Motor prot.
Common failure
Back
Press. c ontrolled
Start
System
D 3
Hardwaremenu
Parametermenu
Back
Servicemenu
Back
Start
Date Time
Ku1
E3 2
E3 1
Ku1
Date Time
Back
Start
Save Back
X,x
Enter
System
Start
System pressure
(3 sec.)
Code
"000001"
Sprachein-
stellung Sprache
Steuerungsart
Einschaltdruck
Nachspeisung
Abschaltdruck
Nachspeisung
Menü
(nur beim
ersten Mal)
Zeit und Datum
(3 sec.)
• When entering the program mode, the control for pressure maintenance is active.
• The code will be active 5 minutes aer latest input.
• Remove all unpermitted loads, supported objects or lateral loads from the basic automat.
• When the programming procedure is completed, the electrical parts of the ENA are ready for
operation.

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 1918
ENG
7. Maintenance and troubleshooting
• The water and the contact surfaces can be 70 °C or more.
• Wear the required protective clothing.
• The floor can be wet or greasy. Wear protective shoes.
7.1. Before maintenance
There can be life voltage on the
terminal bars even when the main
power supply is disconnected.
Make sure all external power
supplies (e.g. external refill
equipment) are also disconnected
from the automat.
Release the pressure of vacuum tank before maintenance.
7.2. Aer a power failure
The programmed parameters of the controller do not change aer a power failure.
• Check the condition of the automat for integrity aer a power failure.
7.3. Maintenance interval
Confirm maintenance in the service menu.
Interval Component Activity
Annually ENA 7-30 Check leak tightness of joints,
pumps and screw connections.
If necessary, seal or tighten the
screw connections.
Every year before the peak
period
On-site dirt trap in the feed line
Vent. device
Clean the guards
Check the functions Vacuum test
7.4. Change the automat for water treatment
• Switch o water treatment in the hardware menu and change the module.
• Adjust the capacity in the parameter menu.
• Switch on “water treatment” in the hardware menu
7.5. Error message
NR Message Description Reset Possible cause Troubleshooting
1
Pressure too
low
System pressure
too low, is outside
working pressur
range B
• Leakage
• Pressure-holding value
wrongly set
• Wrong admission
pressure
• Filling pressure too low
• Eliminate leakage
• Set correct pressure-
holding value
• Increase filling pressure
up to working pressure
range
2
Pressure too
high
System pressure
too high, is outside
working pressure
range B
• Pump does not switch
o
• Diaphragm expansion
vessel too small/ wrong
admission pressure
• Filling pressure too
high
• Check control
• Check admission
pressure / use larger
diaphragm expansion
vessel
• Lower filling pressure to
working pressure range
3
Entrycap. too
low
Litres counter does
not supply water aer
make-up request A
• No pulses sent from
litres counter, because:
• litres counter defective
• cable not co
• Replace litres counter
• Connect cable
• Use higher setting value
for response time
5Cycle interval Make-up cycle
interval too short A• Leakage in system • False setting value
• Eliminate leakage
6
Nr. of cycles Maximum number
of cycles within time
window exceeded
A• Leakage in system
• False setting value
• Eliminate leakage
• Program correct settings
7
Fill error Filling without request
(litres counter sends
signal without filling)
A• Leakage
• Solenoid valve don‘t
close/defectiv
• Eliminate leakage
• Replace solenoid valve
8
Quantity limit Maximum quantity
in a make-up cycle
exceeded
A• Leakage
• Setting value for fl ow
rate reduction too low
• Eliminate leakage
• Correct the setting value
9
Runtime
protection
Maximum time in
a make-up cycle
exceeded
A• Leakage
• Setting value for flow
• Pump doesn’t deliver
• Eliminate leakage
• Correct the setting value
• Deaerate pump
10
Exchange
module
Soening module
exhausted A• Module capacity (water treatment)
exhausted
• Replace module
11
Low mA
P-sensor
Interruption of
current loop of
pressure sensor
A• Sensor defective
• Terminal/cable
defective
• Replace sensor
• Check/exchange
terminal/ cabling
12
High mA
P-sensor
Short-circuit in
current loop of
pressure sensor A
• Sensor defective
• Terminal/cable
defective
• Short circuit
• Replace sensor
• Check/exchange
terminal/ cabling
13
Vacuum error 3 times in succesion
insuicient vacuum
for dearation
A
• Temperrature in return
branch higher than
70 °C
• Pump does not
operate continuously
• Leakage in ENA 7-30
• Vent device doesn’t
close
• Take steps for ensuring
return temperatures
below 70°C!
• Replace pump
• Locate leakage in ENA
7-30
• Clean or replace vent.
device
14
Level switch
error
Low level
A
• Vent. device defective
• Strainer / inlet
protected
• Valves closed
• Clean or replace vent.
device
• Clean strainer
• Open valves

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 2120
ENG
18
Next
maintenance
Next maintenance
due A• Maintenance date reached
• Carry out maintenance
and enter „Maintenance
done“ (Service menu)
19
TP motor Motor protection
signal (bimetal
contact of pump) is
active (open)
A
• Pump overheated • Check temperatures
• Check free running
pump
20 Voltage
sensor
Sensor voltage too
low B• Printed circuit board defective
• Replace control unit
21
No date/time RTC has no valid time
information A
• Time setting has got
lost aer prolonged
disconnection from
power supply
• Enter time and date
again
22 Flash error Read error Flash B• Hardware/soware
problem
• Get in contact with
service department
23 Flash error Write error Flash B• Hardware/soware
problem
• Get in contact with
service department
24 Flash error Reprogramming error
Flash B• Hardware/soware problem
• Get in contact with
service department
25
Gas sensor
defective
Gas sensor defective
A
• Malfunctions in
measuring signal,
possible faulty cable
connection to SCU
• Check connection to
controller, Exchange
sensor if necessary
26 Gas sensor,
undervoltage
Signal during
Measurement <4mA A• Sensor not connected, cable damage
27
Gas sensor,
overvoltage
Signal during
Measurement >20mA A• Short-circuit in cable, signal too large
• Test cable connections,
test vent device, if
necessary clean the filters
28
Recurring
indication of
gas value “0”
several successive
small gas values
during measurement
A• Vent blocked/not
working correctly
• Check and clean vent
device
A: Necessary, reset possible within normal use (control restarts aer resetting).
B: No duty, automatic reset within normal use.
8. Disposal
Comply with local legislations.
1
IŠJUNGTA
1
OFF
230 V
2
OFF
• Make sure the system power switch
is OFF.
• Disconnect the power supply.
• Make sure the main power switch is OFF.
• Drain the water.
9. Technical specification
ENA 7
ENA 10
ENA 20
ENA 30
H
H
W
W
D
D
M1
M2
M1
M2

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 2322
ENG
General ENA 7 ENA 10 ENA 20 ENA 30
Article number [-] 17070 17090 17091 17092
Volume [l] 60 80 100 100
Working pressure [bar] 0.8-2.7 0.8-3.5 2.0-4.5 3.0-8.0
Refill pressure [bar] 2-8
max. pressure [bar] 8 8 8 10
Medium temperature [°C] >0-70
Top-up temperature [°C] >0-30
Noise level [dB(A)] approx. 55
Electrical connection [V] 230 230 230 230
Rating of the pump(s) [kW] 1 x 0.62 1 x 1.1 1 x 1.51 2 x 1.1
Connections, dimensions, weights
W x H x D [mm] 728 x 1250 x 325 728 x 1250 x 325 776 x 1250 x 325 728 x 1250 x 525
Connection from system Rp 3/4” (internal)
Connection to system Rp 1” (internal)
Top-up connection Rp 3/4" (internal)
Weight [kg] 38 40 45 60
Glycol % 30
Nominal diameter Maximum line length system installation
DN 20 10 m
DN 25 20 m
DN 32 30 m
9.1 Additional accessories
Pressurisation Unit type NFE 1...(3)
Feeds the machine with water. Make sure the water
pressure is 2 to 8 bar.
The level sensor and the make-up time control the unit.
Gas Sensor
Suitable for ENA 7 - 30.
To be mounted on the gas outlet on top of the bottle of
the degassing unit.
Appendix 1. Commissioning
1.1. Commissioning ENA 7-30
Before commissioning make sure that the unit and its items of equipment are in conformation with
the regulations that apply at the place of erection and in respect of the field of application. The
party erection and operating the unit will be responsible for making the checks and for carrying out
commissioning.
For commissioning, the hydraulic and electric connections must be in place, and the shut-o devices
open.
1.2. Parameterisation for commissioning
The ENA 7-30 comes with a pre- parameterized control. As this control oers a wide range of
possibilities, you will have to set operating parameters so that they will be adapted to the concrete
operating conditions of your heating/cooling system.
When the control is switched on, first ‘ENA 7-30’ and aer that the start screen appears on the
display. Now it is possible to make a selection by turning and pressing the control knob.
Turn and press the control knob (on System, displayed against a black background) to get to the
Selection menu. Select ‘Entries’ (code 000001) to get to the Equipment, Parameter and Service
menus for carrying out parameterization. Set up the control point by point – refer to the sections
with explanations on the Hardware, Parameter and Service menu (ENA 7-30 – Installation and
operating instructions).
Select ‘Back’ to return to or to complete menu items. For completely exiting submenus, you can also
hold the control knob in the pressed state, causing the control to invoke the Process screen/START
menu.
On completing the parameterization of the control, confirm/press Start to get to the Process screen.
The ENA 7, 10, 20, or 30 will then commence its operation

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 2524
ENG
Appendix 2. Items of the hardware and parameter menu
2.1. Operating modes
The operator can operate the system in the fast and normal de-aeration mode. Service personnel have
also access to hand mode, and can carry out a leakage test. This leakage (vacuum) test can also be
used to test the ability to operate the pump.
2.1.1. Fast/Turbo
Pump running (with formation of a vacuum) takes place alternately with the evacuation interval until
the period of time selected for the fast mode expires. Then, the control automatically changes to
normal mode.
0 2 2
1 1
Pump
ON
OFF Time
0 Start delay
1 Pump run
2 Deaeration time
2.1.2. Normal
The normal de-aeration mode is only automatically interrupted by a pause to avoid possible de-aeration
noise during the night.
0 Start delay
1 Pump run
2 Deaeration time
3 Pause duration
2.1.3 .Hand
The hand mode is intended exclusively for maintenance purposes, i.e. for checking the operation of
the pump and of the solenoid valve. The plant operator cannot access this mode.
• Vacuum test
Activation of this mode first causes the system port (at outlet of the system return line) to be
closed. The pump then generates a vacuum within 5 seconds. This vacuum must be maintained for
about 100 seconds to allow the user to determine that the tank is tight, following which the test is
successfully completed. This test is normally carried out prior to commissioning of the system and
aer maintenance of the system.
0 2 3
11
Pump
ON
OFF Time
2.2. Control modes
2.2.1. Level-controlled [%]
Control takes place via an external floating signal or a non-floating signal (230 V). It depends on the used
pressureholding control and whether a pump-controlled or compressor-controlled diaphragm expansion
vessel is used. When the signal is applied, the pump switches on. The filling operation takes place until
the level set on the control of the expansion vessel is reached.
2.2.2. Pressure-controlled [P]
Control takes place via the pressure sensor that is integrated in the module. When the system pressure
has dropped to the activation pressure ‘Fill command on’, the pump switches on and operates until ‘Fill
command o’ is reached.
In both control modes, the running time and filling quantities (if the system is equipped with a pulse
water meter) are monitored. In addition to this, the pressure in the system is monitored. If the system
pressure falls or rises beyond the working pressure range, an error message appears. The system
activates degassing and filling until the pressure is back in the working range.
2.2.3. Filling o
The ENA 7-30 unit operates solely as an automatic de-aeration unit.
2.3. Monitoring
It is the primary purpose of the monitoring functions to detect errors in the system at an early point
of time and to protect the system components to the largest possible extent by means of appropriate
signals or by automatically shutting down the system. They are particularly intended for detecting
leakages at an early stage and to limit leakages.
2.3.1. Make-up quantity (monitoring)
The operator can freely parameterise the make-up quantity. If the conditions described below are
not satisfied, the system will indicate an error; the floating error contact will be opened until the
error is manually acknowledged.
• The actual run time must not exceed a maximum time per cycle.
• The minimum interval between two cycles (pause) must not be shorter than the time
programmed.
• The maximum number of cycles per time window must not exceed the number programmed in
the run time window (e.g., not more than 3 cycles in the last 8 hours.)
If a litres counter (IWZ in NFE1.2/2.2) is connected and activated, the operator can monitor a
maximum filling quantity per cycle instead of the maximum filling time per cycle.

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 2726
ENG
2.3.2. Pressure monitoring
The maximum allowable pressure and level should not be exceeded. Therefore, pressure deviations
are signalled.
pMIN and pMAX are set on the working
pressure limits and
are not adjustable by the operator. pON and
pOFF are
adjustable within these limits.
2.3.3. Monitoring of quantity of water to be treated
If a water treatment module has been installed and the pulse water meter has been set to ON,
the residual water quantity can be read at the lower right in the process menu. I.e.: if the residual
water quantity has been correctly entered in the parameter menu ‘Water treatment prior to
commissioning’. If the quantity is zero litres, the centralised fault alarm will be tripped (if activated),
and an error message will be initiated. Negative values mean that the permissible treated quantity
(capacity) in litres has been exceeded. The ENA 7-30 continues to operate in such a case.
0 bar
pMAX
0 bar
Pressure
Upper pressure limit
(operating pressure range)
pMAX
Filling deactivation pressure
Lower pressure limit
(operating pressure range)
Filling activation pressure
Fill command OFF
Fill command ON
Appendix 3. Menu descriptions
3.1. Hardware menu
ID number
Can be parameterised only by the manufacturer and service personnel.
Language
The operator can choose between 17 languages. German (G2_1) is the default setting on delivery.
Litres counter (IWZ)
Set this item to ON only if a pulse water meter (litres counter) is used. The pulse water meter can be
used for directly controlling and monitoring the supplied make-up water. The default setting is OFF.
Water treatment
If a water treatment module has been integrated in the make-up water branch and the litres counter
has been set to ON, the residual water quantity that can be read in litres in the process menu. When
a quantity of zero litres is reached, the centralised fault alarm is tripped, and an error message will
be displayed. Negative values mean that the allowable treatment quantity (capacity) has been
exceeded. The make-up unit continues to operate even if the centralised fault alarm has been
tripped. The operator must activate the water treatment function.
Control mode
(Make-up mode) The operator can operate the system in a level-controlled (controlled from an
external pressureholding control) mode or in a pressure-controlled mode (default setting for normal
gas-cushioned diaphragm expansion vessel).
The operator also can deactivate the make-up function.
Operating mode
The unit is shipped from the factory with the fast mode activated. Upon expiry of the fast interval,
the unit automatically switches to normal. However, the operator can change the operating mode
at any time. The hand mode can be activated for servicing purposes only. Vacuum test serves
for ensuring the de-aerating operation and for checking leakages in the system. This function
must be used when the unit is commissioned and each time the unit is put back into service aer
maintenance. Aer the test has been completed, the unit must be switched back to the fast mode.
Sensor / Motor protection
Already been parameterised. Factory setting.
Common failure
If set to ON (item ticked), the common failure will be tripped upon the activation of the respective error
message. The default setting is ON. It is possible to deactivate the following centralised fault alarms:
‘Exchange module’ and ‘Next maintenance’.
• Exchange module: the water treatment capacity is exhausted. If it is set to ON, a centralised fault
alarm will be tripped.
The unit continues to operate. If set to OFF, no centralised fault alarm will be tripped.
• Next maintenance: maintenance date has been reached. If it is set to ON, the centralised fault
alarm will be tripped and
the unit continues to operate. If set to OFF, no centralised fault alarm will be tripped.

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 2928
ENG
3.2. Parameter menu
Item Factory setting
Duration of turbo
- Remaining fast run time up to automatic change to normal mode 10 hours
Pause normal degaz
- Duration of pause between end of evacuation time and beginning of
pump run 15 minutes
- Pause ON (beginning of night pause) 06:00 pm
- Pause OFF (end of night pause) 08:00 am
Degassing
- Pump run time Pressure dependent [s]
- De-aeration time 60 seconds
System pressure
- pON: depending on the system type
ENA 7 -> 1.5 bar
ENA 10 -> 1.5 bar
ENA 20 -> 3.0 bar
ENA 30 -> 5.0 bar
- pOFF: depending on the system type
ENA 7 -> 2.0 bar
ENA 10 -> 2.0 bar
ENA 20 -> 4.0 bar
ENA 30 -> 6.0 bar
- Lower pressure limit (lower working pressure limit) Depending on the
system type
- Upper pressure limit (upper working pressure limit) Depending on the
system type
- Special system pressure (irrelevant for the operator) Factory setting
Litres counter
- Litre/pulse: pulse water meter (can be set only by service personnel) 10 litre/pulse
- Error litres counter: monitoring of delay of cycle of litres counter 40 minutes
Water treatment 100 litres
- Treatment capacity in case of integrated water soening module 100 litres
Filling quantity:
Based on a continually referenced preceding period of time (time window), the unit allows using a
certain number of filling cycles that are separated by pauses from one another. Cycles, pauses and
time windows (time spending) can be freely parameterised.
Example: (default setting)
In the last 480 minutes (time spending) the make-up water quantity per cycle must not exceed 50 litres.
Moreover, it is not permissible to supply this quantity during this time more than three times, and the
pauses between the cycles must be 5 minutes at a minimum.
Item Factory setting
Max quantity/filling
- Maximum allowable quantity per cycle (also per cycle) with integrated
and
configured pulse water meter. See section Monitoring: make-up quantity 150 litres
Max time/filling
- Maximum allowable make-up time per cycle (also per cycle). See section
Monitoring: monitoring of run time 20 minutes
Min. interval betw. 2 cycles
- Minimum interval between two cycles (pause) 5.0 minutes
Max cycles/time spend
- Maximum number of cycles per time window 3
Time spending
- Size of time window 480 minutes
Item Factory setting
Time and date Operator task
- Summer time on: starting month (summer time ON is 00 for regions
without change between times) 03
- Summer time o: ending month (summer time OFF=00 for regions
without change between times) 10
- Maintenance gap: maintenance interval 0 .. 800 days 365 days
- Pressure sensor min.value 0.0 bar
- Pressure sensor max.value 10.0 bar
Note that the values in the filling quantity menu are interdependent. Therefore, it may be necessary
to first parameterise another value before the actual value becomes accessible within the intended
limits. Similarly, setting ranges may be limited by the dependencies. It is advisable, for instance, to
first parameterise a suiciently sized time window before defining the pauses and the number and
length of cycles
3.3. Service menu
Project number
Factory settings; not be programmed by the operator.
Soware version
Readable entry made by manufacturer.
Start
Enter the time and date of the start (traceability) by pressing Start. Before pressing, the date and time
must have been correctly set.
Maintenance
The date of the next maintenance is indicated in parentheses. When this time is reached, the
centralised fault alarm is optionally tripped, and a fault message is displayed to remind the operator.
If it is acknowledged, it will be displayed again aer seven days unless ‘Maintenance done’ has been
pressed, thus indicating that the maintenance has already been carried out. The time and date of the
last maintenance as well as the code level are indicated in the upper two lines.

We reserve the right to change designs and technical specifications of our products. Manual ENA 7-30 3130
ENG
Error list
Shows the last acknowledged 250 errors together with time and date.
Value statistics
Display of various statistic data.
Refill statistics
Display of the last 200 make-up operations together with date, time and duration of the make-up
operations and the number of litres supplied (if a pulse water meter is used). The number of supplied
litres displayed may be zero, although water has been fed into the system, if the makeup quantity was
smaller than the pulse rate of the pulse water meter. Similarly, the actual quantity of water supplied
may be smaller than the value registered by the pulse water meter.
Change entry code
Change to another access code. For the operator, only code 000001 is possible and required.
Appendix 4. Examples
4.1. ENA 7-30 with NFE1.1 and a diaphragm expansion vessel in a heating system
Do not use nominal bores smaller
than indicated for the lenghts
of the lines concerned! The lines
should be as short as possible!
DN20 < 10 m
DN25 < 20 m
DN32 < 30 m
4.2. ENA 7-30 with NFE1.2 and a compressor controlled pressure level in a heating system
Do not use nominal bores smaller than indicated for
the lenghts
of the lines concerned! The lines should be as short as
possible!
DN20 < 10 m
DN25 < 20 m
DN32 < 30 m
NFE1.1
0 0 0
Σ m3
SCU
>1000 mm
A
B
C
D
E
F
Rp3/4" Rp3/4"
Rp3/4"
ENA 7-30
AHeater
BDiaphragm expansion vessel
CENA 7-30
DWaste water (Drain)
EMake-up water inlet
FNFE 1.1
F
E
D
C
A
ENA 7-30
SCU
3
m
Σ
0 0 0
NFE1.2
SCU
B
Rp3/4" Rp3/4"
Rp3/4"
>1000 mm
AHeater
BDiaphragm expansion vessel
CENA 7-30
DWaste water (Drain)
EMake-up water inlet
FNFE 1.2

Flamco B.V.
Fort Blauwkapel 1
1358 DB Almere
the Netherlands
T [phone]
E [email protected]
I www.flamcogroup.nl
Copyright Flamco B.V., Almere, The Netherlands. No part of this publication may be reproduced or published in any way without explicit permission and mention
of the source. The data listed are solely applicable to Flamco products. Flamco Limited shall accept no liability whatsoever for incorrect use, application or
interpretation of the technical information. Flamco Limited reserves the right to make technical alterations.
Man_Ena7-30_art.nr_17070_eng_2022-08