Viessmann VITOSOLIC 100 Quick guide

VITOSOLIC 100
Installation and service
instructions
for heating engineers
VitosolicĂ100
Electronic temperature differential control unit for solar heating system
See Applicability on the last page.
5862Ă490ĂG ăăă9/2003 Please keep safe

2
Safety instructions
Safety instructions
Please follow these safety instructions closely to prevent accidents and
material losses.
Safety regulations
Installation, initial start-up, inspection,
maintenance and repairs must only
be carried out by a competent
person (heating engineer/installation
contractor).
Observe all current safety regulations
as defined by DIN, EN, DVGW and
VDE or locally applicable standards.
See also the safety instructions sheet
in the Vitotec technical documentation
folder.
efore working on the equipment/
heating system/solar heating system,
isolate its mains electrical supply
(e.g. by removing a separate mains
fuse or by means of a mains
electrical isolator) and safeguard
against unauthorised reconnection.
Earthing/lightning protection of the
solar heating system
Install an electrical conductor on the
pipework system of the solar circuit
in the lower part of the building in
accordance with VDE or local
regulations.
The connection of the collector
system to an existing or new
lightning conductor system or the
creation of local earth bonding must
only be carried out by authorised
trained personnel under observation
of local conditions.
Repair work
It is not permitted to carry out
repairs on parts that fulfil a safety
function.
Use only original Viessmann spare
parts, or equivalent parts that have
been approved by Viessmann.
Initial start up
The initial start-up must be carried
out by the system installer or a
designated commissioning engineer.
All actual values should be recorded
in a commissioning/service report.
Instructing the system user
The system installer must hand the
operating instructions to the system
user and instruct him/her in the
operation of the system.
¨ĂSafety instructions
In this instruction manual, this
heading denotes information which
must be observed to prevent
accidents and material losses.
¨This symbol denotes information
which must be observed to
prevent material losses.
5862Ă490ĂG

3
Index
Index
Page
System designĂ4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation and connections
Control unit installationĂ 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical connectionsĂ 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solar heating circuit pumpĂ 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High limit safety cut-outĂ 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SensorsĂ 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mains electrical connectionĂ 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial start up
StepsĂ 11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further details regarding individual stepsĂ 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service scans
TemperaturesĂ 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heat volumeĂ 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circulation pump hours runĂ 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software versionĂ 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting
Fault messagesĂ 15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking sensorsĂ 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the fuseĂ 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System details/functions
SummaryĂ 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special functionsĂ 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum cylinder temperature controlĂ 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector cooling functionĂ 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse cooling functionĂ 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts listĂ27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix
SpecificationĂ 28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Declaration of conformityĂ 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyword indexĂ30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ApplicabilityĂ32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5862Ă490ĂG

4
System design
System design
Dual mode DHW heating with VitocellĆBĂ100 or VitocellĆBĂ300
DHW heating without solar energy
The upper indirect coil of the DHW
cylinder is heated by a boiler. The
cylinder thermostat with cylinder
temperature sensorĂ6 of the boiler
control unit switches cylinder
loading pumpĂ7Ă.
DHW with solar energy
When a temperature difference
higher than the start-up temperature
differentialĂDO set in control unitĂ1
is measured between collector
temperature sensorĂ2 and cylinder
temperature sensorĂ3, solar circuit
pumpĂ4 is switched ON and the
DHW cylinder is heated up. The pump
will be switched OFF if the actual
temperature falls below shutdown
temperature differentialĂDF.
The temperature in the DHW cylinder
is limited by the electronic
temperature limiter (safety shutdown
at 90ĂºC) in control unitĂ1 or by high
limit safety cut-outĂ5 (if required).
When the preset temperature is
exceeded, these devices switch OFF
solar circuit pumpĂ4.
The pasteurisation requirements are
met by circulation pumpĂ8 and
sufficient heat input. Circulation
(relayering) starts if 60ĂºC is not
reached inside the DHW cylinder.
ĂSafety instructions
With temperatures higher than 60 ºC,
limit the HW temperature to 60 ºC
by installing a mixing device, e.g. a
thermostatic mixing valve ( HW
cylinder accessory). The mixing
equipment does not prevent the risk
of scalding at the tap. The
installation of a mixer tap at the
draw-off point is required.
5862Ă490ĂG

5
System design
System design (cont.)
ASolar panel
BSolarĆDivicon
CDraw-off point
DDHW circulation
EDHW circulation output of
boiler control unit or
on-site time switch
FHeating circuit
GOil/gas fired boiler
HDHW cylinder
KW Cold water
WW Hot water
RL Return
VL Flow
*1High limit safety cut-out, see pageĂ8.
5862Ă490ĂG
230 V
28
5
21
ST
*1
12 13 14 15 16 17 18 19 20
NR2 NR1 N L
50 Hz
8
145
7654321
S3S2S1
4A (slow)
ST R2 R1
GH
D
VL RL
B
A
C
E
F
1
4
2
4
3
5
6
7
8
WW
9

6
System design
System design (cont.)
Item Description Number Part no.
Control of DHW cylinder loading by
solar energy
1VitosolicĂ100 1 7170Ă925
2Collector temperature sensor 1Included with itemĂ1
3Cylinder temperature sensor*1 1Included with itemĂ1
4Solar heating circuit pump
(included with Solar-Divicon)
1 7170Ă931
or
7170Ă932
5High limit safety cut-out*2 1 Z001Ă889
8Circulation pump (relayering) 1 Vitoset price list
9Connection extension (only required
for connection of circulation pumpĂ8
and/or high limit safety cut-out or
suppression of reloading by boiler for
systems with boiler control unit
without KM US, see pageĂ21)
1 7170Ă927
Control of DHW cylinder loading by
boiler
6Cylinder temperature sensor 1oiler control unit
standard delivery
7Cylinder loading pump 1 DHW cylinder
accessory
*1Use a threaded elbow (standard delivery for VitocellĆBĂ100, accessory for
VitocellĆBĂ300).
*2VitocellĆBĂ100: observe the max. connectable absorber surface area.
VitocellĆBĂ300: Use a cylinder cap ( HW cylinder accessory).
5862Ă490ĂG

7
Installation and connections
Control unit installation
Installation location
Near the DHW cylinder, observing the electrical connections or their
cable/lead lengths.
Make all electrical connections
before closing the control unit.
Electrical connections
1. Make all electrical connections in
accordance with the details on
pageĂ5.
2. Apply strain relief to cables.
5862Ă490ĂG
5.
4.
1.
2.
3.

8
Installation and connections
Solar circuit pump
Installation
The "SolarĆ ivicon" pump
station includes the
circulation pump with
connecting cable.
Alternative pumps must be
type-tested and fitted in
accordance with
manufacturer's instructions.
Connection
(without connection extension)
3Ćcore cable with cross-section of
0.75Ămm2.
Rated current: max. 4 (2)ĂA
High limit safety cut out
In accordance with DINĂ4751 and DINĂ4753, install an additional high limit
safety cut-out when operating DHW cylinders with solar energy if the DHW
volume is
Hless than ă30Ălitres/m2 absorber surface area when using VitosolĂ100
Hless than 100Ălitres/m2 absorber surface area when using VitosolĂ200, 250
and 300.
Installation
Install the high limit safety cut-out
into the cylinder cap (accessory for
VitocellĂ300).
Separate installation
instructions
Connection
Only possible with connection
extension (accessory), see pageĂ22.
3Ćcore cable with cross-section of
1.5Ămm2.
Temperature setting
As delivered condition: 120ĂºC.
Adjustment to 95ĂºC required.
Separate installation
instructions
5862Ă490ĂG
1~
M
230 V
12 13 14 15 16 17 18 19 20
NR2 NR1N L
50 Hz
4A (slow)
A

9
Installation and connections
Sensors
Collector temperature sensor
Installation
Collector installation
instructions
Connection
To S1 (terminals 1 and 2).
Extension:
2Ćcore cable with cross-section of
1.5Ămm2.
Cylinder temperature sensor
The cylinder temperature is recorded indirectly through measuring the return
temperature of the heat transfer medium inside the indirect coil. This results
in enabling a reloading of the DHW cylinder through solar energy, even if
only a little DHW is drawn off.
Installation
VitocellĆ Ă100
HW cylinder installation
instructions
VitocellĆ Ă300Ă
Connection
To S2 (terminals 3 and 4).
Extension:
2Ćcore cable with cross-section of
1.5Ămm2.
AHeating water return connector
5862Ă490ĂG
1.
3.
2.
A

10
Installation and connections
Mains electrical connection
Regulations
Carry out the mains connection and all earthing measures (e.g. fault current
circuit) in accordance with IECĂ364, the requirements of your local electricity
supplier, VDE regulations or all local and national regulations. The power
supply to the control unit should be protected by a fuse with a max. rating of
16ĂA.
Make the mains power supply connection (230ĂV~) via a mains isolator
(two-pole) to be provided on site.
Disconnect the system by means of a device which simultaneously separates
all non-earthed conductors with at least 3Ămm contact separation.
AControl unit wiring chamber
BMains isolator, on-site
CMains connection 230ĂV~ă50ĂHz
¨ĂSafety instructions
o not interchange cores.
L: TerminalĂ20
N: TerminalĂ19
5862Ă490ĂG
230 V
12 13 14 15 16 17 18 19 20
NR2 NR1N L
50 Hz
4A (slow)
A
C
PE NL
B

11
Initial start-up
Steps
Page
1. Probes or sensors correctly inserted into the sensor well?Ă 9
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Accessories correctly installed to respective installation instructions?
3. Electrical connections carried out correctly?Ă 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. High limit safety cut-out connected to control unit
and adjusted to 95ĂºC?Ă 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Commissioning control unitĂ 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Adjusting system settingsĂ 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Relay testĂ 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further details regarding individual steps
Commissioning the control unit
1. Switch ON the mains power,
the control unit initiates itself,
the ON/OFF lamp flashes
alternately red and green.
The control unit is in automatic
mode.
2. Make adjustments in accordance
with the system version.
5862Ă490ĂG

12
Initial start-up
Further details regarding individual steps (cont.)
Adjusting system settings
At the setting level (see below), the following parameters and functions can
be adjusted:
Temperatures
Differential temperatures DO/DF
. . . . . . . . . . .
Maximum cylinder temperatureĂSX. . .
¨Observe the max. permissible
HW temperature.
Collector limit temperatureĂ ĂCL. . . . . . . . . . . .
Maximum collector temperatureĂ ĂCX
Minimum collector temperatureĂ ĂCN.
Functions
Max. cylinder temperature control
Collector cooling function
Reverse cooling
Special functions
Further parameters
For recording the heat volume
HVolume flow
HHeat transfer medium
Calling up the setting level
The control unit is equipped with a display and a setting level.
1. Select HO with "+".
2. Press "+" for approx. 3Ăseconds;
SE will be displayed.
3. Select the required parameter with
"+" or "ć" (see above); confirm
with "OK";
SE flashes.
4. Select the required value with "+"
or "ć"; confirm with "OK".
Please note:
After approx. 2Ăminutes, the
display reverts to the standard
screen (showing the collector and
HW cylinder temperature) if no
confirmation of modified values
is received or other settings are
changed.
For detailed explanations, see chapter on system details/functions.
5862Ă490ĂG

13
Initial start-up
Further details regarding individual steps (cont.)
Relay test
1. Select MM (manual mode) with
"+" or "ć"; confirm with "OK";
SE flashes.
2. Select the required setting with
"+" or "ć":
0Ă:ĂRelayĂ1 and 2 OFF
1Ă:ĂRelayĂ1 ON, RelayĂ2 OFF
2Ă:ĂRelayĂ1 OFF, RelayĂ2 ON
3Ă:ĂRelayĂ1 and 2 ON
always confirm with "OK".
3. ack to automatic mode with
setting 4.
RelayĂ1: OutputĂR1
RelayĂ2: OutputĂR2
5862Ă490ĂG

14
Service scans
Temperatures
Subject to system version, using "+" or "ć", the following temperatures can
be scanned:
Collector temperatureĂ ĂTC. . . . . . . . . . . . . . . . . . . . . . .
Cylinder temperatureĂ ĂTS. . . . . . . . . . . . . . . . . . . . . . . . .
Sensor or thermostat
temperature (subject to
selected function)Ă ĂT3 or TT. . . . . . . . . . . . . . . . . . . .
Maximum cylinder temperatureĂ ĂSX. .
Maximum collector temperatureĂ ĂCX
Collector limit temperatureĂ ĂCL. . . . . . . . . . . .
Minimum collector temperatureĂ ĂCN.
Heat volume
To determine the heat volume, the
differential between the collector and
cylinder temperature, the selected
volume flow, the type of heat
transfer medium and the hours run
by the solar circuit pump are taken
into consideration.
Select AH with "+" or "ć".
Details in kWh.
Circulation pump hours run
The operating time is saved every
6 hours, i.Ăe. max. deviations of
6Ăhours may occur during power
failures.
The value cannot be reset.
Select HO with "+" or "ć".
Details in hours.
Software version
Select VN with "+".
Please note:
For an explanation to the display symbols, see the operating instructions.
5862Ă490ĂG

15
Troubleshooting
Fault messages
Sensor faults at S1 to S3 ( TC, TS, T3
or TT) are displayed by the ON/OFF
display (flashes red) and through the
following display.
Example:
Cable break
Collector temperature sensor
Short circuit
Collector temperature sensor
5862Ă490ĂG

16
Troubleshooting
Checking sensors
1. Disconnect the relevant sensor
and measure the resistance.
Temperature
in ºC
Resistance
in W
20
40
50
60
546
578
597
616
2. Compare measurement with the
actual temperature displayed
(for scanning, see pageĂ14).
Check the installation and replace
sensor if necessary, in the event of
severe deviation.
Specification
Protection: IPĂ20
Permiss. ambient
temperature
Hduring operation
Ĉ Collector temp-
erature sensor: ć20 to +180 ºC
Ĉ Cylinder temp-
erature sensor: ăă0 to +ă90 ºC
Hin storage and
transport: ć20 to +ă70 ºC
5862Ă490ĂG
Temperature in C
Resistance in
20 60
540
580
620
660
100 140 180
700
740
780
820
860
º

17
Troubleshooting
Changing the fuse
AFuse
Open wiring chamber of control unit.
Replacement fuse inside the pack.
5862Ă490ĂG
230 V
12 13 14 15 16 17 18 19 20
NR2 NR1N L
50 Hz
8
145
7654321
S3S2S1
4A (slow) A

18
System details/functions
Summary
Setting
(as delivered
condition)
Setting
range
Explanation
SFĂćĂSpecial function*1
0 to 8 0: No function
Do not adjust if a sensor is connected
to S3.
1: Maximum cylinder limit
(see pageĂ21)
2: Suppression of reloading by boiler
(see pageĂ21)*2
3: Additional function for DHW heating
(see pageĂ24)*2
4: Thermostat function (see pageĂ24)*2
5: Vitotres control unit
6: VitotresĂ+ĂSFĂ1*2
7: VitotresĂ+ĂSFĂ2
8: VitotresĂ+ĂSFĂ3
DT control unit
DOĂćĂStart-up temp-
erature differential
1.5
to
10.0ĂK
The control unit records the temperature
differential between the collector
temperature and the cylinder temperature,
and compares that differential with start-up
temperature differentialĂ"DO". The solar
circuit pump is started if that value is
exceeded, and the display showsĂ"ąĂ".
DFĂćĂShutdown temp-
erature differential
1.0
to
9.5ĂK
exceeded
,
and
the
display
shows
ĂąĂ.
The pump will be switched OFF if the actual
temperature falls below shutdown
temperature differential "DF".
Please note:
O can be set to a min. of 0.5ĂK above F,
F a maximum of 0.5ĂK below O.
*1These functions only operate in conjunction with relayĂ2.
*2Only in conjunction with connection extension.
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19
System details/functions
Summary (cont.)
Setting
(as delivered
condition)
Setting
range
Explanation
SXĂćĂMaximum cylinder temperature
2
to
90ĂºC
Prevents the cylinder from further loading if
the selected value has been exceeded. The
maximum cylinder temperature control is
factory activated by FNĂ=Ă1 (see pageĂ20).
CLĂćĂCollector limit temperature
110
to
200ĂºC
The solar circuit pump is switched OFF
when this temperature has been exceeded
to protect the solar components.
CXĂćĂMaximum collector temperature
100
to
190ĂºC
The solar circuit pump is started (collector
cooling) if this temperature is exceeded
(solar circuit idle, maximum cylinder
temperature has been reached).
The cylinder temperature can go beyond the
maximum cylinder temperature "SX", but
no higher than 90ĂºC (safety shutdown).
CNĂćĂMinimum collector temperature
ć10
to
+90ĂºC
Minimum start-up temperature which must
be exceeded to start the solar circuit pump.
This prevents the pump being started too
frequently.
With CNĂ=Ă10ĂºC, this function is not active.
ć10.0 to +Ă9.9ĂºC for frost protection function
10.1 to 90ĂºC for minimum temperature
function
5862Ă490ĂG

20
System details/functions
Summary (cont.)
Setting
(as delivered
condition)
Setting
range
Explanation
FNĂćĂFunction
0 to 3 0: Maximum cylinder temperature control
deactivated
Solar circuit pump is controlled in
accordance with selected start-up and
shutdown temperature differential
1: Maximum cylinder temperature control
activated
2: Maximum cylinder temperature
deactivated, reverse cooling function
activated (see pageĂ26)
3: Maximum cylinder temperature control
activated with a lower priority, collector
cooling function activated (see pageĂ25)
FXĂćĂMaximum volume flow
0
to
20Ăl/min
Adjusting the volume flow in accordance
with the collectors used
Vitosol service instructions
MEĂćĂHeat transfer medium
0 and 1 0: Water
1: TyfocorĆĂLS
MMĂćĂManual mode
0 to 4 0:ĂRelayĂ1 and 2 OFF
1:ĂRelayĂ1 ON, RelayĂ2 OFF
2:ĂRelayĂ1 OFF, RelayĂ2 ON
3:ĂRelayĂ1 and 2 ON
4:ĂAutomatic mode
5862Ă490ĂG