Krom Schroder Lago Basic 0201 R V1 User manual

Lago Basic 0201 R V1
Heating module
Operating and
Installation Instructions
Please observe the safety instructions and
read through this manual carefully before
commissioning the equipment.

Safety information General information
2
General infor mation
Safety information
Power connection regulations
Please note the connection conditions specified by your local
electrical power supply utility and the VDE regulations.
Your heating control system may be installed and serviced
only by appropriately authorised specialists.
EIf the system is not installed properly, there is a risk of
fatal or severe personal injury.
Warranty conditions
If the system is not installed, commissioned, serviced and
repaired professionally, this will render the manufacturer's
warranty null and void.
Important text passages
!Important information is highlighted with an exclamation
mark.
EThis attention symbol is used to point out dangers in this
manual.
Installation
Information on installation of the system is provided in Part 2
of this manual together with a connection diagram.
Description
Declaration of conformity
This device corresponds to the requirements of the
relevant guidelines and standards provided the corresponding
installation regulations and the manufacturer’s instructions are
complied with.
General Function
•Heating module in a cascade
•Control of return flow temperature increase using pump
or mixer (depending on configuration)

General information Description
3
General information 2
Safety information 2
Power connection regulations 2
Warranty conditions 2
Important text passages 2
Installation 2
Description 2
Declaration of conformity 2
General Function 2
Operation 4
Explanation of the operating elements 4
Rotating switch 4
Incremental encoder / Shaft encoder 4
Key STL-test / Enter / Reset 4
Settings via DIP switch (rear side) 4
Display (normal mode "Run") 5
Starting up 6
Modifying set values 6
List of the User Set Values 6
Explanatory information 7
Set values 7
Settings via DIP switch (rear side) 8
Functions 9
Operation in the cascade 9
Operation of a modulating heat generator 9
Frost protection function 10
Temperature monitor operation 10
Pump-controlled return flow temperature increase 10
Mixer-controlled return flow temperature increase 10
EEPROM check 10
Pump blocking protection 10
Mixer motor blocking protection 10
Delayed pump switch-off 10
Installation 11
Assembly / Dismantling 11
Electrical connection Controller 12
System diagrams 13
HS controller in cascade operation 13
Sensors 14
Outdoor sensor AF S14
Immersion sensor KF H/ SPF F14
Flow sensor VF v14
Sensor values / characteristic curve 15
Errors 15
Technical data 16

Explanation of the operating elements Operation
4
Operation
Explanation of the operating elements
Rotating switch
RUN Automatic mode
To the left:
iStandby (frost protection only)
burner OFF, pump OFF
W1 Service 1 / Emerg-Mode (set value => °CD)
burner ON, pump ON*)
Modulation: Burner ON, Damper CLOSE
W1 + Prog key => Relay test (=>incremental encoder
W2 Service 2 / Emerg-Mode (set value => °CD)
H1/2/11/Mod = 2: Burner 1+2 ON, HS1 pump ON*)
H1/2/11/Mod = 11: Burner 2 ON, HS2 pump ON*)
H1/2/11/Mod = m: Burner ON, air damper OFF
BUS ID bus identification (boiler number)
°CDin the case of fixed value: Flow / Return flow set
temp. in the case of control mode: Maximum flow temp.
in the case of cascade: Preset through cascade
controller
°C Fno function
vbin the case of return flow temperature increase
via mixers
mixer dynamic [K for regulation to 100%]
Modulation in cascade : Damper operating time [s]
°C
D
in the case of return flow temperature increase:
min. return flow temperature
H1/2/11/Mod heat generator stages
(1=single stage, 2=two-stage, 11=2HS, m=modulating)
*) Pump ON > [°CD+5K v 65°C]; OFF < [°CD-5K v 55°C]
Incremental encoder / Shaft encoder
•Adjusting a set value
Key STL-test / Enter / Reset
STL-test (RT without effect) => By pressing > 1s
=>Burner on, for as long as key is pressed, display: HS-Temp
flashes (no function as mixer)
Enter (modify set values) => Selection of parameter for
adjustment (flashing); Save by pressing again
=> for temperature readouts: Display set value (for 2 seconds)
Reset: In order to reset the controller to the default setting,
keep the key pressed while defining the operating voltage
(display "EE") All user values will be lost during this procedure!
For this reason, please take a note of your own parameters in
this manual.
Settings via DIP switch (rear side)
1: no function in V1
2: no function in V1
3: no function in V1
4: no function in V1
5: no function in V1
6: Sensor selection: 5K NTC <-> 1K PTC

Operation Display (normal mode "Run")
5
Switch
9-stage
Key Incremental encoder
or shaft encoder
Display (normal mode "Run")
The display shows the flow temperature of the heat generator.
When the incremental encoder is rotated, the following
temperatures are displayed:
1. - - (F, arrow 1)
2. Return flow temperature (d, arrow2)
3. HS2 temperature (H2, arrow3),
4. Communication ( , arrow 4; --/0n)
5. Outside temperature (S, arrow 5)
Display „- -„ => No measured value available.
If an arrow points towards one of the printed symbols in the
standard display, the corresponding function is active.
Symbols below display with return flow temp. increase
With return flow temp. increase sensor and mixer dynamic > --
F// // K= Mixer OPENS (arrow points upward)
//d= Mixer CLOSES (arrow points downward)
With return flow temp. increase sensor and mixer dynamic > --
//d= Return flow temperature increase pump ON
(arrow points downward)
Symbols below the display => 1 heat generator
F// // K= Mixer OPENS
//d= Mixer CLOSES or return flow temperature
increase pump ON
J= HS pump ON
H1= Burner stage 1 ON
H2= burner stage 2 ON
Symbols below the display => 2 heat generator [11]
J= HS1 pump ON
H1= HS 1 ON
H2= HS 2 ON
Mixer dynamic > -- = --
F// // K= Mixer OPENS // HS2 pump ON
//d= Mixer CLOSES // return flow temperature
increase pump ON
!Arrow points to symbol => associated function is active

Modifying set values Starting up
6
Starting up
Starting up
After the device has been properly installed, switch on the
power supply.
The software number for your device and then the index of
your software briefly appears in the display.
Then the readout appears in accordance with the position of
the rotating switch.
The controller is now operational => "Run"
Modifying set values
Rotate the selection switch to the corresponding set value
The display shows the currently set value.
Press the OK key.
The value starts to flash and can now be changed using the
rotary knob (provided the adjustment is possible/enabled).
By pressing the button key OK once more, the value is stored
in the device.
Rotate the rotating switch to RUN Automatic mode
=> the mode is activated after 2 seconds.
List of the User Set Values
Designation Area Factory IV
Run => Normal mode
Display level with shaft
encoder
- -
°CD(Max T-Boiler= 95°C) =
with fixed value => Flow
/Return flow set temperature*)
Cascade: Max T-BOILER
20°C - 110°C
Display only
40°C
°C F= during hot water
operation: HW set temperature
No function --
vb= with return flow
temperature increase via
mixer: and Mod.: Mixer
dynamics
In the case of modulation:
Damper operating time
--, 01K – 25K
0s – 60s
--
(12K)
20s
°C
D
= in the case of return
flow temperature increase:
min. return flow temperature
10°C - 80°C 30°C
H1/2/11/Mod = Heat
generator stages
1/2/2A/11/m 2
BUS ID = Bus identification /
Heat generator number
-01, 01 – 08
11-88
01
j1 Service (Emerg-Mode)
+ Prog key = Relay Test
01-05 (see display symbols)
00 – 05
00 = OFF
01-05 = ON
00
j2 Service 2 (see Rotary
knob)
- -
iStandby (OFF) - -

Explanatory information Set values
7
Explanatory information
Set values
°CDFlow set temperature (fixed value)
Display of the maximum flow temperature
Without BUS: Input or the desired flow temperature.
°C
D
Return flow temperature increase
(only with sensor
D
)
Here the minimum return flow temperature for the heat
generator can be entered.
With a pump-controller return flow increase, the mixer
dynamic must be set to „—„ The pump is switched on once
the temperature drops below the min. return flow temperature.
The pump is switched off once the return flow temperature
exceeds the limit by 5K.
In the case of return flow temperature increase via mixer, the
temperature is regulated to the temperature set here by the
mixer on the return flow sensor.
vbMixer dynamic (for return flow temp. increase)
Speed setting at which the mixer motor adjusts when a control
difference occurs. The control difference at which the mixer
motor opens/closes without interruption is entered in Kelvin.
Standard value „—„ => No mixer but return flow temperature
increase pump.
The setting 12 (12K deviation = 100% ID) cannot be used for
most mixer motors.
!Small values cause the mixer motor to adjust quickly and
can lead to oscillation.
Modulation (H1/2/11/Mod = m)
Stand alone: Mixer dynamic for air damper control
Cascade: Setting the operating time [s]of the air damper from
CLOSE to OPEN position (info on type plate).
H1/2/11/mod. heat generator stages
1 = single stage heat generator
2 = 2-stage heat generator
2A = 2-stage heat generator (only in the case of KM2
replacement)
11 = two single-stage heat generators
Mod = m = modulating heat generator (air damper) => in this
case the relay T3 T4 is switched in parallel with the HS pump.
Stand alone: Mixer control remains active and regulates the
temperature at sensor T-Boiler to the value T-BOILER DES.
Cascade: In the case of cascade operation, the demanded
degree of modulation is assigned to a damper position. This
position is maintained for the operating time => The
OPEN/CLOSE relay is switched for the computed time period.
=> Only qualitative control is performed (more/less output).
The heat generator will not deliver the exact degree of
demanded modulation.
10% = CLOSE; 100% = OPEN; intermediate values linearly in
stages
!First damper adjustment after burner start is initiated with
a delay of approx. 3 minutes

Set values Explanatory information
8
BUS-ID (number of the heat generator)
[-01] = heating module address 1 with Boiler setpoints setting
of the manager
[01 - 08] [11-88]If used as a heat generator in a cascade =>
Enter number of the heat generator. Settings >08 are only
supported when corresponding cascade managers are used
for connecting cascades.
!If two heat generators [11] are set, the second heat
generator is assigned the address [BUS-ID + 1].
!If KM2 replacement [2A] is set, the second burner stage is
assigned the address [BUS-ID + 1].
Settings via DIP switch (rear side)
!Settings 1-5 => In V1 without function
Sensor selection (5K NTC <-> 1K PTC)
Check the installed sensors (imprint, type plate, or
measurement value - see table) and set the switch
accordingly.

Explanatory information Functions
9
Functions
!In V1, only stand alone operation and operation with a
cascade controller is supported (also applies for individual
heat generators).
Operation in the cascade
The controller can be used as a heating module for operation
with self-switching oil or gas heat generators in cascade with 1
up to 8 heat generators. The controller can be used to actuate
any of the following configurations:
The controller can be used as a heating module for operation
with self-switching oil or gas heat generators in cascade with
up to 8 heat generators. The controller can be used to actuate
any of the following configurations:
•A one-stage heat generator with associate boiler
pump and return flow temperature increase using a
pump or mixer
•A two-stage heat generator with associate boiler
pump and return flow temperature increase using a
pump or mixer
•Two one-stage heat generators with associated boiler
pump and shared return flow temperature increase
using a pump
•A modulating heat generator with associated boiler
pump and return flow temperature increase via pump
!A connection to the cascade manager via CAN BUS is
required for operation.
Operation of a modulating heat generator
Stand alone: The heat generator is switched on once the
temperature drops below the set temperature. The mixer
relays regulate the temperature to the heat generator set
temperature by adjusting the air damper position.
The heat generator is switched off again at T-Des + 5K.
Cascade: In the case of cascade operation, the demanded
degree of modulation is assigned to a damper position. This
position is maintained for the operating time => The
OPEN/CLOSE relay is switched for the computed time period.
(10% = CLOSE; 100% = OPEN; intermediate values linearly
in stages)
The air damper for modulation
is connected to the contacts
5,6 and 8.
Electrical connection:
Enables burners 1+2
5+6+8 Air damper
-> 5= Damper OPEN (warmer)
-> 6= Damper CLOSE (colder)
-> 8= Supply for damper
10+11 HS pump
9+11 Bridge
(supply for HS pump)
J
J
K /
1
2
3
4
5
6
7
8
9
10
11
12
1
H
1
H
2
H
Mod

Functions Explanatory information
10
Frost protection function
The frost protection circuit prevents the heating system from
freezing by automatically switching on the pump.
Flow sensor frost protection
The frost protection function is activated if the flow
temperature drops below 7°C.
The frost protection function is deactivated if the flow
temperature rises above 9°C.
Outdoor sensor frost protection
The frost protection function is activated if the outside
temperature drops below 0°C. The pumps are activated and
the burner is enabled.
Temperature monitor operation
The boiler pump runs continuously if boiler max. has been
reached. Deactivation with 5k hysteresis.
Pump-controlled return flow temperature increase
ON: Return flow temp. < Minimum return flow temperature
OFF: Return flow temp. > Minimum return flow temperature +
5K or burner OFF.
Mixer-controlled return flow temperature increase
Mixer CLOSE = Heat is transported into the heating system:
Return flow temperature > Minimum return flow temperature.
Mixer OPEN = Short circuit/blocking of generator:
Return flow temperature < Minimum return flow temperature
or [burner OFF and after-run time of pump has elapsed].
EEPROM check
Every 10 minutes, a check is conducted automatically in order
to establish whether the settings of the controller lie within the
specified limits. If a value is found to be out-of-range, it is
substituted by the related default value. The range
transgression is indicated by the flashing error number 81.
In this case, the user should check the important settings of
the controller. The error indication symbol goes out after the
unit is restarted (RESET).
Pump blocking protection
The controller effectively prevents the pumps blocking
following longer periods out of operation. The integrated
protection function activates for 5 seconds all pumps that
have not been in operation during the past 24 hours.
Mixer motor blocking protection
If the mixer was not moved for 24 hours, it is fully opened
once only. The heating circuit pump is switched off during this
time. The maximum flow temperature is monitored. Cancelled
at maximum flow temperature – 5K.
Delayed pump switch-off
When a heat generator is shut off the assigned pump runs on
for 5 minutes. The return flow temperature increase pump is
shut off immediately.

Installation Assembly / Dismantling
11
Installation
Installation
Assembly / Dismantling
3 x 0,5
a
b
c

Electrical connection Controller Installation
12
Electrical connection Controller
Safety extra-low voltage
13-16 CAN BUS
17+18 Sensor for HS2
(= Boiler 2) KF2
alternatively:
19+20 Return flow sensor
VF only in the case of
return flow temperature
increase
22+23 Sensor for HS1
(Boiler1) KF1
24+25 Outdoor sensor
(frost protection only)
EAttention: For the connection (230 V) fixed or flexible
lines with the factory-standard lead end sleeves are to be
installed.
EThe controller is designed for an operating voltage of 230
V AC at 50 Hz. The burner contact is a floating contact
and must always be connected in series with the
mechanical boiler thermostat.
230V∼; Relay switching capacity 2(2)A, 250V∼
1+2 Burner 1 (floating contact)
5 Mixer OPEN /
HS2 pump
6 Mixer CLOSE /
Return flow temperature
increase pump
7 Pump heating circuit / HS
/ Collector
8 L1´Power supply, relay
9 Power supply, device
10 N-conductor, mains
11+12 Burner 2 / Stage2
(floating contact); Potential
e.g. with bridge 11 to 9
EAttention: Bus lines and sensor lines are to be installed
separately from supply lines!
!Switches 1-5 are always without function in this version.
Switch 6 must be used to set the sensor type!

Installation System diagrams
13
System diagrams
HS controller in cascade operation
A Heat generator with temperature sensor KF
and switch input T1 T2
B HS pump
(possibly in heating circuit
flow)
C Return flow sensor VF
D Mixer
(Temperature
increase of return
flow by mixer)
E Pump
(Temperature
increase of return
flow by pump)

Sensors Installation
14
Sensors
Outdoor sensor AF S
Installation location:
•Wherever possible, on a northerly or north-easterly wall
behind a heated room
•Approx. 2.5 m above ground
•Not above windows or ventilation shafts
Installation:
•Detach the cover.
•Attach the sensor with the supplied screw.
Immersion sensor KF H/ SPF F
Installation location:
•In the immersed pipe of the hot-water cylinder tank
(generally on the front face of the tank)
Installation:
•Slide the sensor as far as possible into
the immersed pipe.
!The immersed sleeve must be dry.
Flow sensor VF v
Installation location:
•In the case of boiler control instead of the boiler sensor
KF as close as possible behind the boiler on the heating
flow pipe
•In the case of mixer operation vapprox. 0.5 m behind the
circulation pump
Installation:
•Thoroughly clean the flow pipe.
•Apply heat conductive paste (A)!!
•Secure sensor with stretch band.

Installation Errors
15
Sensor values / characteristic curve
Temperature 5Kohm NTC 1Kohm PTC
-60°C 698961 Ω470 Ω
-50°C 333908 Ω520 Ω
-40°C 167835 Ω573 Ω
-30°C 88340 Ω630 Ω
-20°C 48487 Ω690 Ω
-10°C 27648 Ω755 Ω
0°C 16325 Ω823 Ω
10°C 9952 Ω895 Ω
20°C 6247 Ω971 Ω
25°C 5000 Ω1010 Ω
30°C 4028 Ω1050 Ω
40°C 2662 Ω1134 Ω
50°C 1801 Ω1221 Ω
60°C 1244 Ω1312 Ω
70°C 876 Ω1406 Ω
80°C 628 Ω1505 Ω
90°C 458 Ω1607 Ω
100°C 339 Ω1713 Ω
110°C 255 Ω1823 Ω
120°C 194 Ω1936 Ω
Errors
When there is an error, the corresponding error number
flashes.
Error no. Error description
Communication error
E 91 Bus ID used. The set bus ID is already in use by
another device.
Internal error
E 81 EEPROM error. The invalid value has been
replaced with the default value
ECheck parameter values!
Sensor defective (break/short circuit)
E 70 Flow sensor
E 75 Outdoor sensor
E 76 Storage tank sensor
E 77 Boiler sensor
E 80 Room sensor

Technical data Installation
16
EN 1207 6.6702.171-02 Printed in Germany Subject to change without notice
Technical data
Supply voltage complying with
DIN IEC 60 038
230 V AC
±10%
Power consumption Max. 5 VA
Switching capacity of the relays 250 V 2(2) A
Maximum current on terminal L1' 6.3 A
Type of protection complying
with DIN EN 60529
IP 40
Protection class complying with
DIN EN 60730
Totally insulated
Permitted ambient temperature
during operation
0 to 50°C
Permitted ambient temperature
for storage
-20 to 60°C
Sensor resistances
Tolerance in ohms
Temperature tolerance
Tolerance in ohms
Temperature tolerance
NTC 5 kΩ
(AF,KF,SPF,VF)
± -1% at 25°C
+/- 0.2K at 25°C
PTC 1010Ω
(AFS,KFS,SPFS,VFAS)
± -1% at 25°C
+/- 1.3K at 25°C
Malfunctions due to improper operation or
settings are not covered by the warranty.