ermaf RGA 100 ACU User manual

➔
www.ermaf.nl
D GB NL RUS PL F E UA CN
03251553
© 2020 Ademco 2 GmbH · Edition 06.20
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the opera-
tor. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.ermaf.nl.
Explanation of symbols
• ,  ,  ,  ... = Action
▷= Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Persons under the age of 18 as well as persons with
reduced physical, sensory or mental capabilities or
lack of experience and knowledge are not allowed
to use, clean or service this device. Staying near the
device or its use is prohibited, even if said persons are
supervised or have been instructed on the safe use of
the devices and are aware of the resulting dangers.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 09.8
The following chapters have been changed:
– Fully revised version
Contents
Operating instructions
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Translation from the German
Heater RGA 00 ACU
Heater RGA 00 ACU ....................
Contents ..............................
Safety.................................
Checking the usage .....................
Installation ............................
Tightness test ..........................4
Wiring ................................4
Commissioning.........................8
Adjusting the heater....................0
Cleaning .............................
Assistance in the event of malfunction ....4
Maintenance ..........................0
Checking the safety functions and burner
operation.............................
Accessories ..........................
Spare parts ...........................5
Technical data ........................6
Certification ..........................7
Logistics .............................7
Goods return form . . . . . . . . . . . . . . . . . . . . . 8
Contact ..............................8
Contents
Safety

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Checking the usage
RGA 00 ACU
Heater with indirect combustion for animal sheds
and horticultural greenhouses. Depending on the
type and setting, the heater can be operated with
natural gas or LPG (propane/butane).
This function is only guaranteed when used within the
specified limits– see page26 (Technical data). Any
other use is considered as non-compliant.
Type code
Code Description
RGA 00 Heater
Part designations
MODE RESET ON/OFF
1
4
72
5
3
6
Stainless steel housing RGA 100 ACU
Housing cover with burner control unit ACU
(service form in housing cover)
Operating box
4Service flap
5Connection for gas combination control
6Connection for chimney with condensate vessel
(not included in the delivery)
7Main fan
Type label
Air circulation, electrical connection rating, rated heat
input, gas type, category, supply pressure, burner
pressure, enclosure: see type label.
Ademco 2 GmbH, Hansastrasse 6
49504 Lotte (Büren)
Gemany
012-18
0085 20
• Before installation, check whether the device is
suitable for the regional gas type and the speci-
fied limits, see type code and page26 (Techni-
cal data).
Installation
DANGER
Danger of death! Gases are generated during the
storage of slurry which remain partly dissolved in
the liquid. If the slurry is strongly agitated during
mixing and purging, poisonous, explosive gases
such as hydrogen sulphide and methane are re-
leased. If an ignition source is present, the released
gas can explode.
To avoid damage during operation, please observe
the following:
– Switch off the heater before mixing and purging
the slurry.
– Close the slide valves when storing slurry out-
side.
– The fan for the air supply must not be part of a
closed pipe system.
– Respect the safety distance of the heater to
inflammable materials, see “Installation position”.
– Consult your fire insurance provider and/or local
fire protection engineer to assess the foresee-
able, general risk of fire.
– For cleaning, care and maintenance, note the
applicable national regulations and directives.
– No condensation permitted. Comply with ambi-
ent temperature, see page26 (Technical data).
Installation position
▷Installation in the horizontal position.
▷
Note the safety distance to walls and inflam-
mable materials.
> 3 m> 1m
> 0,2m
> 0,5m
> 0,5m
▷Ensure sufficient free space around the device.
There must be no obstructions in front of the inlet
and outlet side of the heater.
▷ The distance between the heaters should be
greater than 30m.
▷To avoid overheating, do not cover the main fan.

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Chimney
CAUTION
The RGA 100 is only deemed CE tested and ap -
proved when used with the coaxial chimney de-
scribed in “Accessories”.
▷
Do not exceed the maximum length (5m) of
the chimney.
▷ The design of the chimney depends on the prem-
ises and the roof construction.
▷ Various chimney elements for individual appli-
cations can be supplied, see page 21 (Ac-
cessories).
▷ The wall mounting bracket cannot be installed in
the correct position until the chimney has been
selected.
Siphon connection
DANGER
Risk of poisoning!
– If the RGA 100 is operated without a siphon
or with an empty siphon, toxic flue gases may
escape. If the RGA 100 is operated without a
siphon, the opening must remain unobstructed.
▷A siphon must be connected before initial com-
missioning. This prevents the escape of toxic
flue gases and will also collect any condensate
contained in the flue gas.
▷ The siphon is not included in the delivery and
must be ordered separately for the nominal
diameter of 17.5mm.
▷Fill the siphon with water before initial commis-
sioning.
▷If large volumes of condensate are discharged,
we recommend that an additional drain pipe is
connected to the siphon.
▷ If the heater has not been used for a lengthy
period, the siphon must be checked, cleaned
and filled with water before commissioning.
• Unscrew the siphon, remove it and fill it until
water flows out of the side drain.
• Secure the siphon again and ensure that the seal
is correctly positioned.
Connecting the gas supply
▷The RGA 100 is set to the correct gas type as
specified in the purchase order.
▷
If you wish to use a different gas type, see
page3 (Changing the gas type).
 Disconnect the system from the electrical power
supply.
 Shut off the gas supply.
 Remove the sealing plug from the gas inlet on
the combination control on the underside of the
RGA100.
4 Connect the gas pipe with an Rp¾" threaded
connection or gas hose with an Rp¾" connector,
see page21 (Accessories).
▷Use approved sealing material only.
5
MODERESET ON/OFF
6
Changing the gas type
▷If you wish to use a gas type other than the one
specified in the purchase order, the RGA100
must be adjusted to the new gas type, see
page10 (Adjusting the heater).
▷Then seal the gas pressure setting.
▷Note the new gas type on the type label with a
waterproof pen.

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Tightness test
▷The heater may only be disconnected from the
electrical power supply once the device has been
switched off.
 Disconnect the system from the electrical power
supply.
▷The valves are closed when de-energized.
 Open the housing cover of the operating box.
 Open the pressure test point for pu on the gas
combination control.
4 Connect a pressure gauge to  .
0
1
5 Switch on the power supply.
6 Release the gas supply.
7 Check the maximum inlet pressurepu.
▷ The maximum inlet pressure pumust not be
exceeded.
8 Close the manual valve.
9 Monitor inlet pressure p
u
on the pressure gauge.
▷The pressure must not drop.
MODE RESET ON/OFF
N2= max. 100 mbar
MODE RESET ON/OFF
10 11
 Having successfully completed the tightness
test, remove the pressure gauge and close the
pressure test point forpu .
Wiring
CAUTION
Danger of electric shocks!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– The RGA 100 must have an external 16 A fuse.
– It must be possible to isolate the system from the
power supply. The RGA100 must be equipped
with a mains cable or a plug featuring a contact
gap according to the specifications for Over-
voltage categoryIII for full isolation at each pin.
If this is not the case, the permanently wired
electrical installation must include an isolating
switch of this type pursuant to the local instal-
lation regulations.
▷The heater may only be disconnected from the
electrical power supply once the device has been
switched off.
 Disconnect the system from the electrical power
supply.
 Shut off the gas supply.
 Open the housing cover of the operating box.
▷External electrical interference must be avoided.
▷ The selection of cables and mains plug must
comply with local/national regulations.
4 Open the cover of the burner control unit.

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Connection diagram
▷The burner control unit is fitted with coded con-
nectors to prevent them being mixed up.
LN LN NLT LV +T –+VmA V12
LLiN 12 +
0 V
D – 49018 Osnabrück, Germany
ACU
Connecting the room thermostat
CAUTION
To avoid damage to the heater RGA100, please
observe the following:
– Provide post-cooling for the RGA100. The
RGA 100 requires a continuous supply of
230VAC (1/NAC), 50Hz.
– In case of a power failure, an emergency power
supply unit should automatically take over the
power supply. Emergency power supply units
with a cardan shaft drive for tractor attachment
are also suitable.
▷
Use a room thermostat with a hysteresis of ±1°C.
It switches on if the room temperature is 1°C
less than the set temperature and switches off
again once the room temperature is 1°C more
than the set temperature.
▷The floating connectors X4 (230V) or X8 (24V)
are used to connect the room thermostat.
▷ If the room thermostat is connected to the mains
supply of other connectors (connector X1 orX3),
the heater RGA100 will be damaged.
Connecting a single heater to a room
thermostat
5 Connect a room thermostat for 230VAC.
▷Method 1: power supply via the heater.
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
▷Method 2: power supply via the environmental
control computer.
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
5 Connect a room thermostat for 24VDC/AC to
connectorX8.
▷The 24V power supply must always be from an
external source.
eBus
Burner Chip
Card (BCC)
Potentiom-
eter
(switch-on
delay)
MFA 2
MFA 1
Remote
reset
0 – 10 V
0 – 20 mA
10 – 24 V
Thermostat
Controlled
air flow
230 V
Thermostat
Controlled
air flow
Mains con-
nection
Mains filter
Mains filter
Mains con-
nection

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230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
Connecting multiple heaters to a room
thermostat or an environmental control
computer
5 Connect a room thermostat for 230VAC.
▷Method 1: power supply via the heater.
2. RGA 100
X2
2. RGA 100
– +T
X8
+V
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
1. RGA 100
1. RGA 100
1. RGA 100
1. RGA 100
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
▷Only one bridge may be connected to a single
heater between connectors X1 andX4. “N” may
be connected to all successive heaters between
connectorsX4 only.
2. RGA 100
X2
2. RGA 100
– +T
X8
+V
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
1. RGA 100
1. RGA 100
1. RGA 100
1. RGA 100
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
▷Method 2: power supply via the environmental
control computer.
2. RGA 100
X2
2. RGA 100
– +T
X8
+V
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
1. RGA 100
1. RGA 100
1. RGA 100
1. RGA 100
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
5 Connect a room thermostat for 24VDC/AC to
connectorX8.
▷ The 24 V power supply must be from an external
source.
2. RGA 100
X2
2. RGA 100
– +T
X8
+V
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
2. RGA 100
X2
L N
X1 Gas
NLT LV
X4
1. RGA 100
1. RGA 100
1. RGA 100
1. RGA 100
230 V AC
230 V AC
+V – +T
X8
mV
10-24 V AC/DC
X2
230 V AC
L
N
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
X2
L N
X1 Gas
NLT LV
X4
Remote reset
L
N
Reset
MFA
1M
FA
2
max. 5 A
max. 264 V
max. 2 A
max. 264 V
NLT LV
X4
12
X6X5
Li
12
X7
▷An external remote reset may be connected to
connectorX5.
Multi-functional outputs
Reset
MFA 1MFA 2
max. 5 A
max. 264 V
max. 2 A
max. 264 V
AC/DC
10-24 V
LV +V –
+
X8
12
X6X5
Li 12
X7
0 V
▷Floating multi-functional outputs can be param-
eterized using connectors X6 andX7. There are
two methods of completing this parameterization:
The PC software for burner control units BCSoft
can be used via the optical interface on the burn-
er control unit, see page21 (Accessories).
The “Setting mode” menu can be opened us-
ing the MODE selection button (heater OFF)
and used for parameterizing the outputs, see
page9 (Setting mode).
▷MFA , external fan (max. 5 A)
For improved air circulation in the room, an addi-
tional fan can be connected. The external fan can
be actuated with an adjustable delay (BCSoft) for
switching it on and off. The exact time relates to
the operation of the main fan.
▷Possible parameterization options:
– Inactive: the external fan is not actuated.
– Main fan active: the external fan is actuated at
the same time as the main fan.
– Main fan inactive: the external fan is actuated
when the main fan of the RGA100 switches off.
– Modulation enable: the external fan is not actu-
ated until the RGA100 starts modulating opera-
tion.

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▷MFA , status signal (max. 2A)
Possible parameterization options:
– Fault NO (default setting):
For example, the input for a horn can be set to
NO.
– Fault NC:
The input on an environmental control computer
can be set to NC (e.g. to indicate a cable dis-
continuity).
– Operation
– Standby
Selecting the burner capacity
FA 2
2 A
64 V
AC/DC
10-24 V 0-20 mA
+ –
– +
0-10 VBus
+V –+T
X8
mA V
X9
2+
X10
0 V
▷ Connector X9 is not wired at the factory. In other
words, the burner heats at its full capacity.
▷ A capacity range from 60 to 100% can be se-
lected using a voltage or current signal. A signal
sensor is connected to connectorX9 for this
purpose:
0 mA/0 V = maximum capacity,
20 mA/10 V = minimum capacity.
Burner Chip Card (BCC)
▷
All the data relevant to the device are saved
on the BCC and the internal device memory
(EEProm). In addition, the parameters are saved
on the BCC.
CAUTION
Danger of electric shocks!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– If the BCC is removed from the burner control
unit, the heater RGA100 will be non-functional.
▷In the event of faults which cannot be rectified
by authorized trained personnel, contact the
supplier.
▷ The BCC can be removed from the burner control
unit and submitted for diagnostic purposes by
agreement with the supplier.
B
CC
+
Delay
▷If no other fault is active, the RGA100 can be
readied for use again by inserting a new BCC.
The BCC must be compatible with the RGA100
and the gas type used.
Setting the switch-on delay
▷
If multiple heaters switch on at the same time,
there can be a gas and/or power shortage on
individual devices. To avoid this happening, ad-
just the switch-on delay using the potentiometer
on the burner control unit.
▷The potentiometer is set to 0s at the factory.
– +
▷If necessary, a switch-on delay of 5 to 10s can
be set between the devices.
6 After completing the wiring, close the cover
and the housing cover on the burner control
unit again.
7 Switch on the power supply.
▷ A circulating dash will be displayed when the
voltage supply is switched on to indicate that
the switch-on delay is running.
8 Release the gas supply.
9 Commission the heater.

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Commissioning
CAUTION
To avoid damage to the heater RGA100, please
observe the following:
– Ensure that the heater, gas pipes, mains voltage
supply and room thermostat have been installed
by authorized trained personnel according to
the regulations.
– The Burner Chip Card (BCC) must be compat-
ible with the heater, the version, the gas type
used and the factory default parameters.
– The heater may only be operated with the gas
type specified on the type label.
– If the device needs to be converted to be oper-
ated with a different gas type:
1. Use the correct nozzle, see page25 (Spare
parts).
2. Set the appropriate pressure on the burner,
see table on page11 (Natural gas, LPG).
Operation
MODE RESET ON/OFF
MODE RESET ON/OFF
MODE RESET ON/OFF 1
3
5
7
4
2
6
ON/OFF
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
Operating modes
MODE selection button
4RESET
5Status indicator
6Optical interface
77-segment display
Description
ON/OFF
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
: to switch the heater on and off.
Operating modes:
Operating
mode Explanation
The burner control unit waits for
the signals for controlled air flow
or heating (automatic)
Continuous heating
(manual)
Controlled air flow in continuous
operation (manual)
Controlled air flow in continu-
ous operation and heating when
a thermostat signal is applied
(automatic)
MODE selection button (heater switched on):
By pressing the MODE selection button, it is
possible to switch between the different operat-
ing modes.
By pressing and holding the MODE selection
button in operating mode 2Heating, the
current capacity setting is displayed and can be
selected, see page11 (Display and selection
of the capacity setting).
MODE selection button (heater switched off):
By pressing and holding the MODE selection but-
ton, you can go to Setting mode, see page9
(Setting mode). The multi-functional outputs can
be assigned and the eBus address specified in
this mode.
4RESET: internal reset button
5Status indicator (light):
red: fault
yellow: standby/ready for operation
green: RGA 100 in operation
6Optical interface:
The PC software BCSoft can be used with the PC
opto-adapter via this interface, see page21
(Accessories).
77-segment display:
Error code
Flame signal
Number of operating cycles
can be displayed. The decimal point indicates
that another figure follows.
Error code
RESET button
Flame signal
Operating cycles
> 3 s RESET button
ON
Error code: an error is displayed immediately
in the form of an alternating letter and number
indicating a warning or fault, see page14 (As-
sistance in the event of malfunction).
Flame signal: pressing the RESET button dis-
plays the flame signal, see page12 (Flame
signal).
Operating cycles: pressing and holding the
RESET button for more than 3s displays the
number of operating cycles in changing displays,
see page20 (Maintenance).
▷
Press the RESET button to exit the display of
the flame signal or operating cycles.

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Switching on
• Press ON/OFF
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
.
• The LED for the last selected operating mode will
flash. A different operating mode can be selected
within 2s. If you retain the selection, the flashing
light will change to permanently lit after 2s.
▷The heater will start once the thermostat signal
has been applied and the set switch-on delay
elapsed, see page7 (Setting the switch-on
delay).
▷ The burner starts after approx. 20s and operates
in the last selected operating mode.
Switching off
• Press ON/OFF
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
. The burner control unit display
and the burner will switch off immediately. Mains
voltage is still supplied however. The display in-
dicates “–”.
▷ The main fan cools the heater down until it
reaches switch-off temperature.
CAUTION
– Do not disconnect the heater from the electrical
power supply until the cooling process has been
completed.
▷The display “–” will go out.
Setting mode
▷
You can go to Setting mode by pressing and
holding the MODE selection button when the
heater is switched off.
• Switch off the heater
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
.
▷Mode E: eBus addresses can be saved.
Mode A/F: multi-functional outputs can be pa-
rameterized.
MFA 2 MFA 1
eBus address
Mode E
Mode A/F
MODE
button
MODE
button
MODE
button
MODE
button
eBus adddress 1 ... eBus address 8
Save eBus address
0 Inactive
1 Fault (NC)
2 Fault (NO)
3 Operation
4 Standby
0Inactive
1 Main fan
active
2 Main fan
inactive
3 Modulation
enable
> 2 s MODE button
> 2 s MODE button > 2 s MODE button
> 2 s MODE button > 2 s MODE button > 2 s MODE button
> 2 s MODE button
OFF
▷ Press the RESET button to return to the previ-
ous menu.
▷ After a timeout of 20s, the display will auto-
matically return to the initial mode. The display
indicates “–”.

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Adjusting the heater
 Mount the flue gas outlet in accordance with the
local regulations.
 Make sure the outside air supply 5 between the
operating box and the chimney is connected.
CO2
O2
CO
5
▷The heater is set to the gas type specified in the
purchase order.
 Check whether the values in the table for gas
type and adjusting range correspond to local
conditions.
Heating value Hs[MJ/m3]
Minimum Maximum
Natural gas L G25 30.58 35.05
Natural gas H G20 34.04 40.75
LPG G 30 90.76 125.75
▷
The fine adjustment on the gas combination
control is made on the basis of the flue gas
measurements on the chimney.
▷The following are required for setting:
– 2.5mm Allen key,
– Pressure gauge with display range 0 to 50mbar,
– Flue gas analyzer. The flue gas analyzer must be
able to measure λ (lambda), O
2
, CO and CO
2
.
The sensor should be suitable for temperatures
of up to 300°C.
▷ The inlet pressure pumust comply with the
technical data, see page26 (Technical data).
Important! Always check the inlet pressure when
the RGA100 is in operation.
▷The burner pressure pGcan be measured using
a test point  between the combination control
and the housing wall.
0
3
4 Open the pressure test point for pG .
▷Do not use force!
5 Connect a pressure gauge to  .
6 Disconnect the system from the electrical power
supply.
▷The heater may only be disconnected from the
electrical power supply once the device has been
switched off and post-cooling is complete.
7 Shut off the gas supply.
CO2
O2
CO
100 mm
6
8 Drill a hole in the flue gas pipe 100mm above
the stainless steel housing of the RGA100 to
insert the flue gas analyzer sensor.
9 Insert the sensor into the hole 6 and position
in the centre of the flue gas pipe.
0 Ensure that there is no air in the gas system.
 Switch on the power supply.
 Release the gas supply.
 Measure the CO, λ and O2values simultaneously
and observe them.
4 Switch on the burner control unit. Press ON/OFF
OFF 1
2
3
4
5
AUTO
+AUT
MODE
(RESET)
ON/OFF
O
until an LED lights up.
▷ The burner control unit switches on in the last
operating mode selected.
5 Select operating mode 2Heating.

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Display and selection of the capacity setting
CAUTION
Only for testing in modulating operation. The
RGA100 is optimally adjusted and sealed for the
low-fire rate. Afterwards, it is essential to switch
back to maximum capacity operation.
▷This display is only possible when the heater is
switched on.
▷
The current capacity setting can be displayed by
pressing and holding the MODE selection button
in operating mode 2Heating.
min.
max.
▷ If the top dash is lit, the heater is operating at
maximum capacity.
▷If the bottom dash is lit, the heater is operating
at minimum capacity.
▷ If the dash flashes, the heater has not yet
reached the capacity setting.
▷ When the capacity setting has been reached,
the dash will be lit for 15s. During this time, you
can switch between minimum and maximum
capacity setting by pressing and holding the
MODE selection button again.
▷ The display will go out after 15s. The display
can be reactivated by pressing and holding the
MODE selection button again.
▷ The display can be cancelled at any time by
pressing the RESET button.
Setting the high-fire rate
CAUTION 2 4
To avoid damage to the heater
RGA 100, please observe the
following:
– CO2adjustment may only
be made using the adjusting
screw  .
– The zero point setting 4 is
sealed and should not be
changed.
▷
The heater must be operated at maximum ca-
pacity.
▷Having initiated the ignition process, the burner
should start within 3s.
▷ If the burner does not ignite after several at-
tempts, the inlet pressure is too low or the burner
pressure is set too low.
▷
Turn the adjusting screw  half a turn in the
+direction using the Allen key.
2
0.8
1
1.5
22.5
3
4
5+
▷If the burner still does not ignite, turn the adjust-
ing screw further in the +direction.
▷The burner pressure pGcan be read during the
start-up process. The burner pressure should
not exceed the values in the table.
▷ If the burner starts successfully, you can observe
the flue gas analyzer to see how the λ and O2
values change.
▷Check the limit values for λ and O2.
6 Monitor the CO value.
▷During a normal start-up, the CO value will rise
briefly and then fall quickly again.
CAUTION
To avoid damage to the heater and flue gas analyzer,
please observe the following:
– The CO value may rise briefly to 500ppm im-
mediately after ignition.
If the CO value does not drop after a short time,
immediately reduce the CO2value by turning
the adjusting screw  anti-clockwise.
Take the flue gas analyzer sensor out of the test
point immediately.
▷The RGA is suitable for the following gas types:
Natural gas, LPG
Gas type
Heating
value
Wobbe
index
[MJ/m3]
Natural gas L G25 32.49 41.53
Natural gas H G20 37.78 50.71
LPG G 30 125.81 87.34
G+ K gas*
Gas type Wobbe index [MJ/m3]
min. max.
G+ K gas 43.46 45.3
* see page27 (The Netherlands)
7 Allow the heater to operate for 10minutes.
▷During a normal start-up, it may take a few sec-
onds for the main fan to start the cooling process.

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8 Read the burner pressure at the pressure test
point for pGand readjust if necessary. Measure
the λ and O
2
values with a calibrated flue gas
measuring instrument and adjust according to
the values in the table:
Gas type
Inlet
pressure
pu[mbar]
Burner
pressure
pG[mbar]
Lambda
λO[%]
min. max. max. min. max. min. max.
Natural gas L
G25 25 100 15.5 1.2 1.35 3.5 5.4
Natural gas
K gas (G+) 25 100 15.5 1.2 1.35 3.5 5.4
Natural gas
H G20 20 100 11.5 1.2 1.35 3.5 5.4
LPG butane
G 30 29 100 18.7 1.2 1.35 3.5 5.4
LPG
propane
G 31
29 100 22.0 1.2 1.35 3.5 5.4
▷ If the burner pressure is ≤ the value in the ta-
ble and the minimum λ and O
2
values are not
reached, reduce the burner pressure until the λ
and O2values are between the min./max. limits.
▷If the burner pressure is ≤ the value in the table
and the maximum λ and O
2
values are exceeded,
increase the burner pressure by a maximum
of 5%.
▷ If the measured values correspond to the details
on the type label and in the table, the heater has
been set correctly. Otherwise, continue with the
measurement and fine adjustment until the heater
is correctly set.
▷Heater adjustment is now complete.
CAUTION
To avoid damage to the heater RGA100, please
observe the following:
– The low-fire rate may only be set by author-
ized trained personnel by agreement with the
manufacturer.
▷A service form can be found inside the housing
cover. All settings for the future use of the heater
and any guarantee claims are to be kept up-to-
date on this form.
Flame signal
▷
The flame signal can be displayed when the
burner is operating.
 Pressing the RESET button displays the flame
signal.
▷It is shown in coded form as a number from 0
to9. This number must be multiplied by a factor
of2. The result of this multiplication is the level
of the flame signal inµA. Example: the number 3
corresponds to a flame signal of 6–8µA.
Display Flame
current [µA] Display Flame current [µA]
00 – 2 510 – 12
12 – 4 612 – 14
24 – 6 714 – 16
36 – 8 816 – 18
48 – 10 918...
 Check the flame signal.
▷The flame signal is displayed for 20s.
 Press the RESET button to exit the flame signal
display.
▷If the flame signal is <2µA, fault F(flame fault)
1or 2is displayed, see page14 (Assistance
in the event of malfunction).
Cleaning
CAUTION
To ensure that no damage occurs during operation
and cleaning, please observe the following instruc-
tions. Otherwise, injuries or damage to the device
may occur and/or the function of the device may
be impaired, and the manufacturer’s warranty will
be cancelled.
– Sharp-edged metal sheets. Always wear protec-
tive gloves.
– After cleaning, check that the components on
and in the heater are in good condition. The
device may only be restarted if all safety devices
have been installed and the safety functions
have been checked.
– Clean the heater once a year when used in
horticulture and at regular intervals as well as
after each fattening period when used in agricul-
ture, as described below. Inadequate or irregular
cleaning can cause the device to overheat and
can thus lead to fire damage or damage to the
device. For example, dirt particles can catch
fire and can be blown out of the heater.
▷The RGA100 is made of high-quality stainless
steel and is resistant to external influences such
as dirt and moisture.
▷It is designed so that it can be cleaned carefully
both inside and outside with a high-pressure
cleaner.
▷ The housing cover and cable glands on the
burner control unit must be closed during the
cleaning process.

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▷ The electrical components are protected from
moisture by additional water drip edges on the
housing cover. Nevertheless, direct water influ-
ence on the edges of the housing cover should
be avoided.
▷
A downward slope inside the device ensures
that dirty water drains out.
▷
Never direct the high-pressure cleaner at the
heater when it is set to water jet. Always use
the spray setting.
▷ The distance between the nozzle and the surface
to be cleaned must always be at least 50cm. Too
short a water jet from the high-pressure cleaner
can cause serious damage to the device.
 Switch off the burner control unit.
 Disconnect the system from the electrical power
supply.
▷The heater may only be disconnected from the
electrical power supply once the device has been
switched off and post-cooling is complete.
 Shut off the gas supply.
4 Check the cover on the burner control unit and
the housing cover to ensure they are both tightly
closed.
MODE RESET ON/OFF
▷The heat exchanger can be easily accessed via
the service flap.
5 Clean the heat exchanger and burner by means
of a water jet directed through the safety grille
past the fan blades
MODE RESET ON/OFF
>
50 cm
▷If the RGA is heavily soiled, the safety grille can
be removed together with the fan:
MODE RESET
5b
5c5a
5d Refit the safety grille and fan after cleaning:
To do so, slightly tighten the nuts, check the
fan blades for smooth operation and freedom
of movement and then firmly tighten the nuts.
▷ The rubber seals between the electrodes and
terminal boots may be displaced by the water jet.
6 After cleaning, check that all the parts on and
in the heater are in the correct positions, for ex-
ample whether the rubber seals between the
electrodes and terminal boots are fitted correctly.
7 Chemical cleaning agents, disinfectants and/or
pesticides contain corrosive substances which
can even corrode stainless steel. Always rinse
the devices with water after cleaning using such
agents to remove any residue of these agents
from the surface.
8 After cleaning, select operating mode 3Con-
trolled air flow so that the interior of the device
can dry properly.
9 After cleaning the heater, check it is functioning
faultlessly in normal operation, see page21
(Checking the safety functions and burner opera-
tion).
0 When operating with LPG, check and clean the
breather orifice of the pressure reducer.

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Assistance in the event of
malfunction
WARNING
To avoid harm to persons and animals or damage
to the heater, please observe the following:
– Electric shocks can be fatal! Before working
on possible live components, ensure the unit
is disconnected from the power supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– Repairs to components, e.g. the burner con-
trol unit or the combination control, may only
be carried out by the manufacturer. Otherwise,
the warranty will be cancelled. Unauthorized
repairs or incorrect electrical connections, e.g.
the connection of power to outputs, can cause
gas valves to open and the burner control unit to
become defective. In this case, fail-safe opera-
tion can no longer be guaranteed.
– (Remote) resets may only be conducted by
authorized trained personnel with continuous
monitoring of the devices concerned.
▷
In the event of an installation fault, the burner
control unit closes the gas valves and the status
indicator light will be red at the latest after a
restart has been unsuccessful.
▷The 7-segment display will show an error code
in the form of a letter with a decimal point and
a number alternately indicating a warning. To-
gether with the red status indicator light, this
then constitutes a fault.
▷Warnings and faults may be cleared only using
the remedies described below.
Internal wiring
▷
To rectify a fault, it is sometimes necessary to
check the internal wiring.
 Open the housing cover of the burner control
unit.
 Undo the two screws (M3) using a Phillips screw-
driver and remove the complete plastic cover
from the burner control unit.
Internal connection diagram
LN LN NLT LV +T –+VmA V12
LLiN 12 +
0 V
D – 49018 Osnabrück, Germany
ACU
Main fan
Burner fan
230 V
Not used
Not used
Ionization
Bridge
Pressure switch for air
(vane not used)
Valves
Ignition
Not used
Burner fan
Safety temperature
sensor

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 Press the RESET button to reset. The unit then
reverts to the last operating mode selected.
▷Possible faults:
Display Fault type
FFlame fault
AAir fault
CTemperature fault
EElectronics fault
UOther possible faults
4 If the burner control unit does not respond even
though all the possible faults have been rectified
as described below, contact your supplier.
? Fault
! Cause
• Remedy
? The 7-segment display has gone out despite
the voltage supply being OK?
! Fuse F2 is defective.
• Check the fuse contacts.
There is a spare fuse directly next to the fuse
holder.
Attention! Fit the correct fuse for 4A.
LN LN NLT LV +T –+VmA V12 LLiN 12 +
0 V
D – 49018 Osnabrück, Germany
ACU
? Error code F. and 1flash alternately?
On burner start-up, the burner control unit has
not detected a flame during the safety time. Sev-
eral automatic start-up attempts will be com-
pleted if a restart has been programmed.
! Inadequate inlet pressure available.
• Check the inlet pressure.
! Ignition is not working properly.
• Check the connection of the ignition cables for
damage or moisture. The spark plug must be
fitted correctly.
• Check the ignition spark acoustically during the
3-second ignition time from the burner fan side.
• Clean the spark electrode.
• Check the ignition transformer and replace it if
necessary.
! Poor flame signal due to incorrect burner adjust-
ment.
• Readjust the CO
2
value, see page10 (Adjust-
ing the heater).
! Poor flame signal due to dirty or badly connected
flame rod.
• Check the flame rod and clean it with fine abra-
sive paper if necessary.
• Check the cable connection, cable and terminal
boot for damage or moisture. The terminal boot
must be fitted correctly.
• Check the yellow and green burner ground cable
for corrosion and to ensure it is firmly connected.
• The flame rod is defective and must be replaced.
! Air in the gas pipe.
• Vent the gas pipe.
! Valves do not open.
• Disconnect the valve plug on the gas combina-
tion control and measure the voltage at the valve
plug during the safety time.
• If the voltage is not adequate, first check fuseF2
(4A). If the display and the LEDs are not lit, it is
defective.
• If the voltage is not adequate, replace the gas
combination control and return it to the supplier.
? Error code F. and 1flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningF.1.
? Error code F. and 2flash alternately?
The flame has gone out during operation. If a
restart has been programmed, an automatic
restart will be completed.
! Poor flame signal due to incorrect burner adjust-
ment.
• Readjust the CO
2
value, see page10 (Adjust-
ing the heater).
! Poor flame signal due to dirty or badly connected
flame rod.
• Check the flame rod and clean it with fine abra-
sive paper if necessary.
• Check the cable connection, cable and terminal
boot for damage or moisture. The terminal boot
must be fitted correctly.
• Check the yellow and green burner ground cable
for corrosion and to ensure it is firmly connected.
• The flame rod is defective and must be replaced.

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? Error code F. and 2flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningF.2.
? Error code F. and 3flash alternately?
The burner control unit detects a flame signal
during start-up or in fault status.
! Incorrect flame signal due to leakage/creepage
current.
• Check the wiring, see page4 (Wiring).
• Check the flame rod.
! Incorrect flame signal through conductive ce-
ramic insulation, e.g. surge via PE wire, possible.
• Remedy incorrect flame signal. Replace the flame
rod and, if necessary, also the complete burner
control unit and housing.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
? Error code A. and 4flash alternately and the
light is red?
Burner fan continues to operate when the burner
control unit is in idle state.
! Wiring fault.
• Check whether the wiring from connectorX21
to the burner fan has continuity.
! A vacuum is generated in the chimney due to
strong wind and this affects the burner fan.
? Error code A. and 5flash alternately?
The burner fan does not reach the required speed
when starting up.
! The air supply is blocked.
• Check the air supply.
! The air supply is not OK.
• Check the air supply and clean it if necessary,
see page12 (Cleaning).
! Fan motor defective.
• Check the motor.
! Wiring fault.
• Check the wiring (connectors X21 andX12).
? Error code A. and 5flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningA.5.
• Check the air supply and clean it if necessary.
? Error code A. and 6flash alternately?
The burner fan does not reach the required speed
during operation.
! The air supply is blocked.
• Check the air supply route.
! The air supply is not OK.
• Check the air supply and clean it if necessary,
see page12 (Cleaning).
! Fan motor defective.
• Check the motor.
! Wiring fault.
• Check the wiring (connectors X21 andX12).

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? Error code A. and 8flash alternately?
The main fan does not start during the start-up
attempts.
! The pressure switch does not switch.
• Check the air hose on the pressure switch for
dirt and moisture and clean it.
• Check the pressure switch and replace it if nec-
essary.
! The main fan is not working.
• Check the relay and replace it if necessary.
! Main fan defective.
• If possible, remove the main fan and replace it.
? Error code A. and 8flash alternately and the
light is red?
The fault could not be rectified. All start-up at-
tempts have been used and the burner control
unit goes into lock-out.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
• Rectify the cause of the fault as described above
for warningA.8.
? Error code A. and 9flash alternately and the
light is red?
The main fan continues to operate after the de-
vice has been switched off.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! The pressure switch does not switch.
• Check the air hose on the pressure switch for
dirt and moisture and clean it.
! The main fan is switched off but the pressure
switch signal does not drop.
• Check the pressure switch and replace it if nec-
essary.
! The relay to actuate the main fan is defective.
• Replace the relay.
? Error code C. and 1flash alternately and the
light is red after 5minutes where applica-
ble?
Monitor temperature threshold (STM) of the safety
temperature sensor has been exceeded.
! Temperature has been exceeded.
• Leave heater to cool down for longer.
! The main fan does not switch on.
• Check the main fan.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! Safety temperature sensor is incorrectly aligned.
• Check the position of the safety temperature
sensor.
! Ambient temperature exceeded.
• The temperature is >40°C. Allow the room to
cool.
! The safety temperature sensor is measuring an
incorrect temperature.
• Replace the safety temperature sensor.
! The heater is badly soiled.
• The heater must be cleaned urgently.
! Installation position.
• The heater is too close to other heaters, see
page2 (Installation).
! Incorrect λ or O2value.
• The heater is not set correctly and must be ad-
justed, see page10 (Adjusting the heater).
! In the event of a power failure during operation,
the heater will be switched off without a cool-
ing phase. In the event of a brief power failure
(<5minutes), the heat exchanger will heat the
device excessively.
• Once the voltage supply has been restored, Con-
trolled air flow mode is activated. The heater is
cooled for a maximum of 1minute.
? Error code C. and 2flash alternately and the
light is red?
Limiter temperature threshold (STL) of the safety
temperature sensor has been exceeded.
! The cause of the fault as described above for
warningC.1 could not be rectified.
• Check the heater for damage, see page20
(Visual inspection).

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? Error code C. and 3flash alternately and the
light is red?
Bridge on X16 between I1 and L disconnected.
! Wiring fault or cable discontinuity.
• Connect cable bridge on X16 between I1 and L.
? Error code C. and 4flash alternately?
Capacity reduction function active. The capac-
ity reduction function is activated 10°C below
the monitor temperature threshold (STM) of the
safety temperature sensor.
! The main fan does not switch on.
• Check the main fan.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! Ambient temperature exceeded. The temperature
is >40°C.
• Allow the room to cool.
! The heater is badly soiled.
• The heater must be cleaned urgently.
! Installation position.
• The heater is too close to other heaters, see
page2 (Installation).
! Incorrect burner adjustment. The heater is not
correctly set.
• Adjust the heater, see page10 (Adjusting the
heater).
? Error code C. and 9flash alternately and the
light is red?
! Safety temperature sensor incorrectly connected.
• Check contact at connector X22.
! Safety temperature sensor is below -30°C.
! Safety temperature sensor is defective.
• Replace the safety temperature sensor.
? Error code E. and 1flash alternately?
! The remote reset input is defective.
• If you use the remote reset input, contact your
supplier.
? Error code E. and 2flash alternately and the
light is red?
! An adjustable parameter and the CRC check are
not the same. The parameters are implausible.
• Order a new BCC. Contact your supplier.
▷
Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
? Error code E. and 3flash alternately and the
light is red?
! A fixed parameter and the CRC check are not
the same. The parameters are implausible.
• Order a new BCC. Contact your supplier.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
? Error code E. and 4flash alternately and the
light is red?
! Limits for fixed parameters not observed.
• Order a new BCC. Contact your supplier.
? Error code E. and 5flash alternately and the
light is red?
! The BCC is not connected.
• Connect the BCC to the printed circuit board.
? Error code E. and 6flash alternately and the
light is red?
! An incorrect BCC is connected. The BCC must
be compatible with the ACU of the RGA100.
• Remove the BCC and connect the correct BCC
to the printed circuit board, see page7 (Burn-
er Chip Card (BCC)).

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? Error code E. and 7flash alternately?
! Fuse defective.
• Check external fuse F1 (8 A).
? Error code E. and 8flash alternately?
! Programming mode is active.
• As soon as Programming mode has been de-
activated, the display will go out.
? Error code E. and 9flash alternately?
! Internal electronics fault.
• Remove the BCC and send it to your supplier.
! Fuse defective.
• Check external fuseF1 (8A).
? Error code U. and 1flash alternately and the
light is red?
! Voltage supply is below the limit (programmable
limit, e.g. <160V).
• Ensure that adequate mains voltage is supplied.
? Error code U. and 2flash alternately and the
light is red?
! Voltage supply is above the limit (programmable
limit, e.g. >260V).
• Ensure that adequate mains voltage is supplied.
? Error code U. and 3flash alternately and the
light is red?
! All start-up attempts in the programmed voltage
range (e.g. 160–180V) were unsuccessful. The
last start-up attempt is not made to prevent a
lock-out.
• Ensure that adequate mains voltage is supplied.
? Error code U. and 5flash alternately and the
light is red?
! While a fault was pending, the unit has been
successfully reset more than 5 times within
15minutes using the remote reset input.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
? Error code U. and 6flash alternately and the
light is red?
! The unit has been unsuccessfully reset more
than 10times within 15minutes using the remote
reset input.
▷ Reset is only possible by pressing the RESET
button on the burner control unit or using the
remote reset if there is one.
? A circulating dash is displayed rather than
an error code?
▷ After switching on the voltage, a circulating dash
is displayed.
▷Three possible pieces of information are output:
! Switch-on delay time running.
Or
! Cycle lock active. The time (cycle lock) between
two starts is too short.
• The display will go out automatically as soon as
the time between two starts is long enough. The
burner control unit will ensure a pause between
start-up attempts on the basis of its parameteri-
zation. This warning is displayed during this time.
Or
! The main fan is switched off but the pressure
switch signal does not drop. A burner restart is
not possible.
• After 25s, the display will change to error code
A. 9.

GB-20
D
GB
NL
RUS
PL
F
E
UA
CN
Maintenance
CAUTION
To ensure that no damage occurs during operation
and maintenance, please observe the following
instructions. Otherwise, injuries or damage to the
device may occur and/or the function of the device
may be impaired. The supplier/manufacturer cannot
accept liability for damage resulting thereof.
– Have the heater cleaned at least once a year
by qualified maintenance personnel.
– Have the safety functions checked at least once
a year by qualified maintenance personnel, see
page21 (Checking the safety functions and
burner operation).
– Check the chimney once a year with your local
chimney sweep to find whether the flue gas and
air supply routes are clear.
– Sharp-edged metal sheets. Always wear protec-
tive gloves.
– After cleaning or repair work, check that the
components on and in the heater are in good
condition. The device may only be restarted
if all safety devices have been installed and
the safety functions have been checked, see
page21 (Checking the safety functions and
burner operation).
 Switch off the burner control unit.
Visual inspection
 Check all heaters for dirt and clean them accord-
ingly, see page12 (Cleaning).
 Check all heaters for damage and loose parts.
4 The rubber seals between the electrodes and
terminal boots may be displaced by the water
jet. Check whether the seals are fitted correctly.
5 Check the internal air hose 5 for damage.
5
6 Check the wiring.
7 Check the cable glands.
8 Depending on the number of operating cycles,
we recommend that the spark electrode and
flame rod be replaced once per year.
9 Check the seal on the housing cover of the burner
control unit. Replace it if necessary.
0 Check the inside of the housing cover for traces
of dust, dirt or moisture. If you find such traces,
the cause must be rectified at all times, e.g. by
sealing an open cable gland.
 Check the cable harness and wiring for signs of
damage.
Number of operating cycles
 Check the number of operating cycles (heaterON):
the number of operating cycles can be displayed
by pressing and holding the RESET button. The
number of operating cycles is composed as fol-
lows in alternating displays:
The first character (X.) stands for X,000,000 op-
erating cycles, the second character (Y) stands
for Y00,000 operating cycles. For example, the
first character is the number2.: the unit has ex-
ceeded 2,000,000 operating cycles. The second
character is the number 3: the unit has exceeded
300,000 operating cycles. The total number of
operating cycles is composed of the numbers
2 and3. This gives a total number of operating
cycles of 2,300,000.
 Disconnect the system from the electrical power
supply.
▷The heater may only be disconnected from the
electrical power supply once the device has been
switched off and post-cooling is complete.
4 Shut off the gas supply.