Rendamax E8.1121 User manual

Operating Instructions
for the operator and authorised end user
Heating Controller E8.1121
10/2006 Item code DOC2014

2
Table of Contents
Table of Contents …………………………………………………. 2
Operation Power connection regulations…………….... 3
Warranty conditions...............………………. 3
Function……………………………………….. 3
Operating mode selection…..………………. 4
Effect of the operating mode………………... 4
Display in normal operation………...……….. 5
Changing the settings................………...…. 6
Operating level…………...…………………... 7
Changing the settings...........……………….. 8
Overview of display values and settings..…. 9
General function description...................….. 30
Installation and Start-up………….............…. 31
Notes …………………………………………………. 43

Operation
Power connection regulations
Warranty conditions
Function
Power connection regulations
Please note the connection conditions
specified by your local electrical power
supply company and the VDE regula-
tions. Your heating control system may
only be installed and serviced by
appropriately authorised specialists.
EImproper installation may result in
danger to life and limb.
Warranty conditions
If the system is not installed,
commissioned, serviced and repaired
properly, it will render the manu-
facturer's warranty null and void.
Important text passages
! Important notes are denoted by an
exclamation mark.
EThis attention symbol is used to
point out dangers in this manual.
Installation
Notes on installation and
commissioning and a connection plan
can be found in this manual.
! The operating manual describes
the maximum version of the
controller, meaning that not all
statements are relevant for your
device.
Declaration of conformity
This device corresponds to the
requirements of the relevant guidelines
and standards, if the corresponding
regulations and the manufacturer's
instructions are complied with.
Function
The device consists of a two-stage
regulation for heat generators, a
service water heating system, control
system for two mixed heating circuits,
as well as the following auxiliary
functions:
- 1 timer-controlled output
(circulation pump)
- 1 temperature-controlled output
The following functions may be
assigned to this output (circulation
pump, header pump, solar integration,
heat generator for solid fuel, return flow
temperature increase).
- Demand-related circulation pump
control
- Automatic toggle between summer
and winter time
- Automatic adjustment of function
in accordance with the sensor
configuration
3

For initial start-up, please read the
chapter "Installation and Start-up“
Operation in normal mode
(operating flap closed)
Operating elements
ÇChange the set operating mode
Operating mode selection
Turn the knob to select the operating
mode required. The operating mode
selected is indicated by a symbol at the
bottom of the display. It takes effect
when the setting is not changed for 5 s.
The following operating modes are
available for selection:
iStandby / OFF
(Heating OFF and hot water
preparation OFF, only frost
protection mode)
F1Automatic mode 1
(Heating according to timer
program 1; DHW according to
DHW program)
F2Automatic mode 2
(Heating according to timer
program 2; DHW according to
DHW program)
hDay mode
(24 h heating with comfort
temperature 1; HW according to
HW program)
CNight mode
(24 h heating with reduced
temperature; HW according to
program)
FSummer mode
(Heating OFF, HW according to
HW program)
WService
(automatic reset after 15 min)
heat generator regulated to heat
generator set temperature = max.
heat generator temperature= see
page 18 ; when the heat generator
temperature has reached 65°C, the
consumers are regulated to their
flow temperature to dissipate heat
(cooling function).
!The cooling function must be
explicitly enabled in the consumer
circuits by means of a set value.
Operation
Operating mode selection
Effect of the operating mode
4
Effect of the operating mode
The operating mode set here affects
the HS regulation and the integrated
heating circuits of the controller.
Each heating circuit can be assigned a
separate operating mode from the one
set by means of the "operating mode"
parameter in the user level of the
corresponding heating circuit.
When the "i= Standby/OFF",
and "F= Summer mode" operating
modes are set, they have a reducing
effect on all heating circuits and
consumer circuits in the entire system.

Operation
Display in normal operation
Display in normal operation
Explanations
A Current time
B Freely selectable display
(refer to "DISPLAY SEL"
parameter)
C DCF reception OK
(only if receiver is connected)
D Bus symbol (check data lead to
connected controllers if this symbol
does not appear)
E Display of the active heating
program for the first heating circuit
(here: 6:00 to 08:00 hrs and
16:00 to 22:00 hrs)
F Status display:
HBurner ON;
DZheating mode;
FZ hot water preparation
G Mode selector switch, the display
applies to all heating circuits for
which a separate operating mode
has been selected via the "MODE"
set value
(here: F2=> Heating according to
timer program 2).
H Display of current heat generator
temperature
!Due to the tolerances of sensors,
deviations of +/- 2K (2°C) are
normal between various tempera-
ture displays. Temperatures which
change rapidly can have higher
deviations for short periods due to
the different time-related behaviour
of various sensors.
!The display of the current heating
program applies to the device's
first heating circuit.
In case of having two heating
circuits the display can be set to
the 2nd circuit
5

Operation
Changing the settings
Changing the settings
The operating flap must be opened
first in order to change or request set
values.
=> Controller switches to Operation
mode
a Display indicating the current level
b Holes to unlock the controller
fixation. Insert a thin screwdriver
deep into the holes and then lift up
the controller.
Operating elements
ÇA=> Shaft encoder
Search for value/level or adjust value
ÄB=> Programming key
- Select a value level
- Select a value level to change
- Save a new value
C=> Change display
LED ON => The value in the display
can be changed by actuating the shaft
encoder (A).
D=> Manual-Automatic switch.
In Manual mode, all the pumps and
first burner stage are switched on. The
mixers are not adjusted / controlled
(display: "EMERG-MODE“).
x
F
Limitation (switch-of with 5K
hysteresis):
- Burner => MAX T HS (Expert)
- Heating pumps => MAX FLOW-T
(expert)
- Cylinder charging pump =>
DHW-TEMP I (user)
ECaution, overheating, e.g. with
floor or wall heating! => Set mixer
by hand!
E=> PC connection via optical
adapter
6
Areas
WService
F Date / Time / Holiday
iDisplay
Users
Prog Time programs
Expert
Operating level
HInstallation
FHot water
D1 Heat circuit I
D2 Heat circuit II

Operation
Operating level
General SERVICE
DATE / TIME / HOLIDAY
ÇTurn anticlockwise Ê
ÇTurn clockwise Ì
Display INSTALLATION
HOT WATER
HEAT CIRCUIT I
HEAT CIRCUIT II
User INSTALLATION
HOT WATER
HEAT CIRCUIT I
HEAT CIRCUIT II
Time programs CIRCL TIME
HOTW-PROG
HEAT-PROG ID1
etc...
Expert INSTALLATION
HOT WATER
HEAT CIRCUIT I
HEAT CIRCUIT II
Open operating flap
Operating level
Operation is divided into different
areas:
General - Display - Users - Time
Programs - Expert
Opening the hinged control panel cover
automatically takes you to the display
and indicator area.
- The current area "DISPLAY"
appears in the display for a short
time (1 clock circuit).
- After the clock circuit the display
switches to the current operating
level "INSTALLATION".
- This is displayed for a short time
(1 clock circuit) when you switch
to a new area.
ÇSelect the level in which the value
to be adjusted or displayed can be
found using the rotary knob.
Ä Press Prog button! =>
Open / select level
ÇSearch for value using rotary knob
Ä Press Prog button! => Select value
LED lights up => adjustment can
now be made
Ç Modify value using rotary knob
Ä Press Prog button! => Store
value - LED goes off
7

Operation
Changing the settings
Changing the settings
Areas
General
Value selection summary
Service => for service engineers
Date / Time / Holiday => for users
Display
System value display (e.g. sensor
values and setpoints). No adjustments
can be made. Operating errors are
therefore excluded in this area.
Users
Summary of settings that can be made
by the operator.
Time programs
Summary of time programs for heating
circuits, the hot water circuit and
possibly the circulation pump
Expert
Summary of values for which expert
knowledge is required to make settings
(installation technician).
EMaking incorrect settings in the
expert level can cause damage to
the system or the property that is
being heated. => The values in the
expert level are protected by a
code number.
Levels
The settings in the different areas are
sorted into operating levels
- INSTALLATION
- HOT WATER
- HEATING CIRCUIT I
- HEAT CIRCUIT II
INSTALLATION
All display values and settings that
relate to the heat generator or the
entire system and cannot be assigned
to a consumer circuit.
Hot water
All display values and settings that
affect central hot water preparation
and circulation.
Heat circuit I / II
All display values and settings that
relate to the associated consumer
circuit.
When heat circuit II is being configured
as a hot water circuit, for example, the
settings for this distributed hot water
circuit can be found in the "Heat circuit
II" operating level.
!An overview of all settings can be
found on the following pages.
8

Overview of display values and
settings
General area
(Select main level using Çand open
with Ä)
Date / Time / Holiday
This area contains a series of different
values in order to provide rapid access.
(Select values/value group using Ç
and open with Ä)
!If a heating system controller has
been set to be the TIME MASTER
(time setting for all controllers, see
EXPERT/INSTALLATION) or a
DCF (Radio time receiver) has
been installed in the system, the
time is blanked out on all the other
controllers in the system.
!There may be a time difference of
up to 2 minutes per month (correct
time if necessary). If a DCF
receiver is connected the correct
time is always displayed.
The current weekday is calculated
automatically. Checking can take place
using the selectable additional display
in the standard display => set to "Day"
It is possible to change from summer
to winter time by entering the date.
Date/time => Value group
(General -> Date/Time/Holiday level)
All the values in this group are set in sequence
=> adjust using Ç=> continue with Ä
TIME
(Minutes)
Current minutes blink and can be ad-
justed
TIME
(Hours)
Current hours blink and can be ad-
justed (seconds are set to "00" when
stored)
YEAR Adjust current year
MONTH Adjust current month
DAY Adjust current day (date)
~Hinged cover OPEN Îsearch for level to the left with Ç, open with Ä
9
Operation
Overview of display values and settings
Holiday => Value group
(General -> Date/Time/Holiday level)
All the values in this level are set in sequence
=> adjust using Ç => continue with Ä
YEAR START Set current holiday start year
MONTH START Set current holiday start month
DAY START Set current holiday start day
YEAR STOP Set current holiday end year
MONTH STOP Set current holiday end month
DAY STOP Set current holiday end day
!Please do not enter the day of
travel as the start date, but the first
day of the holiday (no more heating
from this day).
!Please do not enter the day of
travel as the end date, but the last
day on which there is to be no
heating. When you arrive home the
house should be warm and there
should be hot water.
!Stop holiday function => e.g. for
early return by pressing the
program switch.

Summer time => Value group
(General -> Date/Time/Holiday level)
All the values in this level are set in sequence
=> adjust using Ç=> continue with Ä
MONTH START Set month for start of summer time
DAY START Set earliest day for start of summer time
MONTH STOP Set month for start of winter time
DAY STOP Set earliest day for start of winter time
!Not with Time Master or DCF
!The default setting is valid for
Central European time zones.
A modification is only required if
the date for the time change is
changed by political decree.
!The earliest date on which the
change will occur must be set.
The controller performs the time
change on the Sunday following
this date at 2.00 am or 3.00 am.
!If no time change is required,
please set MONTH STOP to the
same value as MONTH START
and DAY STOP to the same value
as DAY START.
Operation
Overview of display values and settings
Relay test => Value group (code no. required)
(General -> Service level)
Select relay using Ç=> relay switches
00 No relay
01 Pump, heating circuit 1
02 Mixer OPEN, heating circuit 1
03 Mixer CLOSED, heating circuit 1
04 Pump, heating circuit 2
05 Mixer OPEN, heating circuit 2
06 Mixer CLOSED, heating circuit 2
07 Burner 1 ON
08 Burner 1 and 2 ON (2 after 10 seconds)
09 Hot water charging pump
10 Timer-controlled relay (multifunction relay 2)
11 Temperature-controlled relay (multifunction relay 1)
~Hinged cover OPEN Îsearch for level to the left with Ç, open with Ä
Service
This area contains values for the
customer service engineers in order to
provide rapid access.
(Select operating level using Çand
open with Ä)
A code number must be entered for
this function.
ÄSelect Relay Test => "Code
number" level
Code number Entry
ÄStart code number entry => [LED]
ÇSelect 1st digit
ÄConfirm entry
ÇSelect 2nd digit
ÄConfirm entry
ÇSelect 3rd digit
ÄConfirm entry
ÇSelect 4th digit
ÄConfirm entry
=> "Relay Test"
RELAY TEST
ÄStart relay test
ÇSelect relay => Relay switches
ÇSelect next relay or use
Äto stop relay test
10

Operation
Overview of display values and settings
Start sensor test with Ä, use Çto
select sensor => temperature is
displayed; Use Äto stop sensor test
SENSOR TEST
Multifunction sensor according to
function set for relay
01 = Header pump
=> T-COLLECTOR = Collector
temperature (display only if sensor is
connected)
20 = Temperature-controlled circulation
pump
=> T-CIRCL = Temperature of circula-
tion pipe return
21 = Circulation pump via pulse
=> no temperature display (display
with ON/OFF)
Parameter CHARGE THROUGH at the
level Expert –Hot water is activated
(=01)
=> T-DHW LOWER = Temperature of
the hot water tank at the inlet area
22 = Integration of the heat generator
for solid fuel
=> SOLID FUEL-T = Temperature of
the heat generator for solid fuel,
=> T-BUFFER LOWER = Temperature
of the storage tank at the inlet area
23 = Solar integration
=> T-COLLECTOR = Temperature of
the solar collector,
=> T-BUFFER LOWER = Temperature
of the storage tank in the inlet area
24 = Return flow temperature increase
=> RETURN TEMP = Return tempera-
ture to HS
32 = Heating circuit direct
=> HEATCIRCUIT 3 (display ON/OFF)
T-MULTI SENS => Temperature
display without function selection
=> without sensor no display (- - - - )
Sensor test => Value group
(General -> Service level)
Select sensor using Ç=> value is displayed
OUTSIDE TEMP Outside temperature
T-HS Temperature of the heat generator
DHW-TEMP Hot water temperature
FLOW TEMP D1 Flow temperature, heating circuit 1
T-ROOM D1 Room temperature heating circuit 1
(only with remote control)
T-FLOW D2 Flow temperature, heating circuit 2
T-ROOM D2 Room temperature heating circuit 2
(only with remote control)
T-RETURN
SOLID FUEL-T,
T-COLLECTOR
T-COLLECTOR
T-CIRCL
T-DHW LOWER
T-MULTI SENS1
Temperature of the multifunction
sensor => Display according to
function set for multifunction relay
(see left)
BUFFER-T-L For solid fuel or solar integration
=> Sensor in storage tank
11

Operation
Overview of display values and settings
Other entries
(General -> Service level)
Select value using Ç=> value is displayed
SOFTWARE NO XXX-XX Softwarenummer mit Index
BURN TIME 1 HÄBrennerlaufzeit (h) Brenner 1
BURN START 1 HÄBrennerstarts Brenner 1
BURN TIME 2 HÄBrennerlaufzeit (h) Brenner 2
BURN START 2 HÄBrennerstarts Brenner 2
STL-TEST XX,X°C Safety temperature limiter test with
heat generator temperature display
Start with Ä(hold down)!
SERVICE
(only with code no.)
Input of date / operating hours for the
yearly maintenance message
RESET USER 00 Load factory settings for user
parameters. (Except language)
RESET EXPERT 00
(only with code no.)
Load factory settings for Expert
parameters. (Except sensors)
RESET T-PRG 00 Load time program factory settings
RETURN Exit level using Ä
SOFTWARE NO XXX-XX
Display software number with index
(please specify if you experience
problems or have questions about the
controller)
BURN TIME and BURN START
Ä=> Display of current value
Ä=> Return
Ähold down until "RESET" display
goes off => Reset display
STL-TEST XX,X°C
Display of heat generator temperature.
Ä Hold down prog. button until
LIMITER activates
=> Burner I ON; all pumps OFF; all
mixers CLOSE
The temperature can be observed in
the display.
SERVICE
Input of values for the yearly
maintenance message
Delete active maintenance display:
Open control panel cover, press prog.
button 2x Ä, set display value to "00"
using Çand confirm with Ä.
Delete programmed yearly message:
At the level General/Service set the
value SERVICE =>DAY or
SERVICE => OPERAT-HRS to dashes.
RESET…
The three value groups can be reset
to the factory setting using the Reset
function.
Select function using Ä to "01" using
Çand confirm with Ä
12

Operation
Overview of display values and settings
INSTALLATION
(HG => heat generator)
Select parameter using Ç=> value is displayed
OUTSIDE TEMP Outside temperature
HS SET TEMP HG temperature setting
T-HS HG flow temperature
RETURN-TEMP
SOLID FUEL-T
COLLECTOR-T
COLLECTOR-T
CIRCL TEMP
CIRCL-PULSE
T-DHW LOWER
HEAT CIRCUIT 3
HS return temperature
Temperature of the heat generator for solid fuel
Header temperature
Temperature of the solar collector
Return flow temp. of the circulation
Circulation via pulse
Temp. of the hot water tank lower measuring
point (see hot water functions)
Additional direct heating circuit
RETURN Exit level using Ä
Display Range
~Hinged cover OPEN Îsearch for
level to the right with Ç, open with Ä
!Display only. No adjustments
possible.
!Display only appears if the sensor
is connected and the value is
present in the system.
If the set value is not present it is
masked out, or hyphens appear in
the display (- - - -).
OUTSIDE TEMP
The measured outside temperature is
smoothed for control purposes. The
smoothed value is displayed here.
HG SET TEMP
Corresponds to the maximum required
temperature of the consumer circuits
from the heating system (incl. hot water
preparation). The mixer circuits request
the temperature + heating curve
distance (expert value)
T-HS
Measured actual temperature of the
heat generator
Temperature of the multifunction
relay
RETURN-TEMP = Return temperature
of system
SOLID FUEL-T = Temperature of the
heat generator for solid fuel, =>
T-BUFFER LOWER = Temperature of
the storage tank at the inlet area
T-COLLECTOR-H = Collector
temperature
T-COLLECTOR = Temperature of the
solar collector,
=> T-BUFFER LOWER = Temperature
of the storage tank at the inlet area
(display only if sensor is connected)
T-CIRCL = Return temperature of the
circulation pipe
CIRCL PULSE = for circulation pump
via pulse the pulse input status is
displayed (ON/OFF)
DHW-T-LOWER = Temperature of hot
water storage tank at inlet area
HEAT CIRCUIT 3 = for additional direct
heating circuit the pulse input status is
displayed (ON/OFF)
13

Operation
Overview of display values and settings
Hot water
RATED DHW-T Current hot water set temperature according to
heating program and operating mode
DHW-TEMP Current hot water temperature
T-DHW LOWER Current temperature of HW tank in the lower
section (charge-through)
RETURN Exit level using Ä
!Display only appears if the sensor
is connected and the value is
present in the system.
If the set value is not present it is
masked out, or hyphens appear in
the display (- - - -).
T-DHW LOWER
Temperature at lower hot water tank
sensor. The value is only displayed if
the value "CHARGE-THROUGH" is
activated at the level EXPERT =>
HOT WATER.
Heating circuit I / II
DES ROOMTEMP Current room set temperature according to
heating program and operating mode
ROOMTEMP Current room temperature
RATED POOL-T *) Swimming pool temperature setting
POOL-TEMP *) Current swimming pool temperature
HUMIDITY ***) Current relative humidity
RATED DHW-T **) Hot water temperature setting
DHW-TEMP **) Current hot water temperature
RATED T-FLOW Current flow temperature setting
FLOW TEMP Current flow temperature
N-OPT-TIME Previous time required to heat up
with heat-up optimisation activated
RETURN Exit level using Ä
DES ROOMTEMP
If an operator device is connected,
there is no display
(“- - - -") in the controller => Value is
displayed in the operator device
ROOMTEMP (room temperature)
Only if a sensor or an FBR is
connected.
*) These values only appear if the
heating circuit is programmed for
regulating a pool.
**) These values only appear if the
heating circuit is programmed as
a hot water circuit.
***) This value is only displayed if an
operator device is connected and
the parameters have been set for
the corresponding heating circuit.
“- - - -„ => no humidity sensor
available in operator device
14

Operation
Overview of display values and settings
User Area
All the settings that can be made by
the operator of the system.
~Hinged cover OPEN Îsearch for
level to the right with Ç, open with Ä
GERMAN => Language
Select controller language
CONTRAST
Adjust intensity of display
DISPLAY SEL
Select additional display in standard
operation
- - - -
=> no additional display of
DAY
=> Week day (Mon, Tue, Wed, ....)
OUTSIDE TEMP
=> Outside temperature
T-FLOW D1
=> Flow temperature heating circuit 1
T-FLOWD2
=> Flow temperature heating circuit 2
HW-T
=> Hot water temperature (upper)
T-HS
=> Heat generator temperature
T-ROOMD1
=> Room temperature heating
circuit 1=> *)
T-ROOMD2
=> Room temperature heating
circuit 2=> *)
*) only if remote control is connected
SELEC-PROG
Select heating circuit whose heating
program is shown in the standard
display.
INSTALLATION
All settings that cannot be assigned to a consumer circuit (consumer circuits:
heating circuits and HW).
ÄSelect value, Çadjust and Äsave
Designation Value range Default IV*)
GERMAN Acc. to version GERMAN
CONTRAST (-20) - (20) 0
DISPLAY SEL Sensor, weekday - - - -
SELEC-PROG Heat circuit 1, HC 2 1
RETURN Exit level using Ä
*) IV = Internal Values:
Space for entering the parameters
stored in the system!
15

Operation
Overview of display values and settings
Hot water
Designation Value range Default IV
1X DHW 00, 01 (OFF/ON) 00 = OFF
DHW-TEMP 1 10°C -70°C 60°C
DHW-TEMP 2 10°C - 70°C 60°C
DHW-TEMP 3 10°C - 70°C 60°C
BOB-VALUE 0K - 70K 0K
CIRCL-P-DHW 00, 01 (OFF/ON) 00 = OFF
ANTILEGION 00, 01 (OFF/ON) 00 = OFF
RETURN Exit level using Ä
~Hinged cover OPEN Îsearch for
level to the right with Ç, open with Ä
Hot water short time heating
function
ANTILEGION = 01 => Every 20th time
that heating takes place or once per
week on Saturday at 01:00 hrs the
storage tank is heated up to 65°C.
It is possible to set up your own hot
water short time heating function using
the third hot water enable facility.
1X DHW (1x Hot water)
01 => The storage tank is enabled for
charging once
(e.g. for showering outside hot water
times).
Charging starts when the temperature
drops below set temperature
"DHW-TEMP 1" by the switching
hysteresis. After charging, the value is
automatically set to "00".
DHW-TEMP 1-3 (Hot water tempera-
ture setting)
Required hot water temperature setting
DHW-TEMP 1
=> used in first enable time,
DHW-TEMP 2
=> used in second enable time ,
DHW-TEMP 3
=> used in third enable time of hot
water program.
16
BOB-VALUE (Operation Without
Burner)
Energy saving function for solar or solid
fuel integration.
For settings > "0" the burner is not
activated for hot water preparation until
the hot water temperature has dropped
below the temperature setting by the
set value + the hysteresis.
!This function may be affected by
alternative energy sources that are
connected via bus (e.g. SD3-Can).
CIRCL-P-DHW (Circulation with hot
water)
01 => The circulation pump runs when
the hot water is enabled, but the
circulation program is disabled.
ANTILEGION (Hot water short time
heating function)
01 => Activation of hot water short time
heating function

Operation
Overview of display values and settings
Heating circuit I / II
Designation Value range Default IV
MODE ----,i,F1,F2,B,B- - - -
T-ROOM DES 1*) 5°C - 40°C 20°C
T-ROOM DES 2 5°C - 40°C 20°C
T-ROOM DES 3 5°C - 40°C 20°C
ECONO TEMP*) 5°C - 40°C 10°C
REDUCED TEMP 5°C - 40°C 15°C
T-LIMIT DAY ----, (-5)°C - 40°C 19°C
T-LIMIT N ----, (-5)°C - 40°C 10°C
HEAT SLOPE 0,00 - 3,00 1,20
ADAPTION 00, 01 (OFF/ON) 00 = OFF
ROOMS-INFL 00 - 20 10
ADAP ROOM-T (-5,0)K - (5,0)K 0,0K
OPTIMIZAT 00, 01, 02 00
M-OPT-TIME 0:00 - 3:00 [h] 2:00 [h]
ECONO OPTI 0:00 - 2:00 [h] 0:00 [h]
PC-ENABLE 0000 - 9999 0000
RETURN Exit level using Ä
~Hinged cover OPEN Îsearch for
level to the right with Ç, open with Ä
MODE
- - - - => The controller programming
switch applies in this case.
When setting an operating mode the
mode only applies to the assigned
heating circuit. When the "i= Stand-
by/OFF", and "F= Summer mode"
controller programming switch
operating modes are set, this has a
reducing effect on all heating circuits
and consumer circuits in the entire
system.
T-ROOM DES 1-3
Required room temperature setting
T-ROOM DES 1
=> used in first enable time,
T-ROOM DES 2
=> used in second enable time,
T-ROOM DES 3
=> used in third enable time of active
heating program for this heating circuit.
ECONO TEMP
Required room temperature setting
during night reduction
REDUCED TEMP
Required room temperature setting
during holidays *) depending on function selector
Heating circuit POOL-TEMP,
DHW-TEMP, T-FLOW-DAY or
T-FLOW-NIGHT (see page 24)
17

Operation
Overview of display values and settings
T-LIMIT DAY/T-LIMIT N (Day/Night)
Only valid if the function is activated
=> Set value "Expert/Heating circuit/
PUMP MODE= 01=> Pump switching
according to heating limit"
If the outside temperature that is
measured and calculated by the
controller exceeds the heating limit
specified here, heating is disabled, the
pumps switch off and the mixers are
closed. The heating is enabled again
when the outside temperature drops
below the set heating limit by 1K
(= 1°C).
T-LIMIT DAY
=> applies during heating times
T-LIMIT N
=> applies during reduction times
"----" => The heating limit is
deactivated. The circulation pump is
switched in accordance with the
standard function (see "Circulation
pump control")
HEAT SLOPE
The gradient of the heat slope indicates
by how many degrees the flow
temperature changes if the outside
temperature rises or drops by 1 K.
Setting tip:
At cold outside temperatures, room
temperature too low => Increase heat
slope (and vice-versa)
At high outside temperature (e.g.16°C)
room temperature too low => correction
via set room temperature
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Flow temperature [°C]
Outside temperature [°C]
Heat slope diagram (setting aid)
Setting 0 => Room control only
!The heat slope can best be set at
outside temperatures below 5°C.
The change in heat slope setting
must be made in small steps and
at long intervals (min. 5 to 6 hours)
because the system must first
adjust to the new values each time
the heat slope is changed.

Operation
Overview of display values and settings
Guideline values
- Underfloor heating
S = 0,4 bis 0,6
- Radiator heating
S = 1,0 bis 1,5
ADAPTION (heat slope adaption)
Only active if an FBR analogue room
device is connected (room sensor +
operating mode selection) and an
outdoor sensor.
Function for automatic heat slope
setting
Starting Conditions:
- External temperature < 8°C
- Operating mode is automatic
(I or II)
- Duration of lowering phase at least
6 hours
At the beginning of the lowering period,
the current room temperature is
measured. During the next four hours,
this temperature is used as the set
point for the room regulator. The
heating curve is calculated from the
values determined during this time by
the regulator for the flow pipe nominal
temperature and the external
temperature.
! If the adaptation is interrupted, e.g.
by a start-up discharge or the hot
water demand from an external
heating circuit, then the warning
triangle will appear in the display
until the function is carried out
successfully the next day or is
ended, e.g. by adjusting the
operating mode switch.
!During the adaptation, the water
heating and the heating
optimisation of the regulator are
blocked.
ROOMS-INFL (Room sensor
influence)
Only active if an FBR analogue room
device is connected (room sensor +
operating mode selection).
The heat generator temperature is
increased by the set value when the
temperature drops below the required
room temperature by 1K.
=> High values lead to fast control and
large heat generator temperature
fluctuations.
- - - -
=> pure weather-dependent control
0 => pure weather-dependent
control *)
20 => pure room temperature control
*) Special function with
ROOMS-INFL = 0
For one-off heating requirements during
the night reduction the heating pump
continues to run until the next heating
period is reached (see "Circulation
pump control").
ADAP ROOM-T (room sensor
adaptation)
For room control (e.g. with FBR), the
measurement can be corrected by
means of this setting should the room
sensor not measure correctly.
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Operation
Overview of display values and settings
OPTIMIZAT (Heating optimisation)
Activation of function for automatically
bringing forward the start of heating.
Example
Heating program 6.00 hrs - 22.30 hrs
OFF
Building starts to be heated at 6.00 hrs.
ON
Depending on weather and room
temperature, heating starts soon
enough so that building just reaches
the set room temperature at 6.00 hrs.
00 => start of heating not brought
forward
01 => brought forward depending on
weather
02 => brought forward depending on
room temperature *)
*) Only active if an FBR analogue
room device is connected (room
sensor + operating mode
selection).
! Warm-up optimisation occurs only
if the reduced time of the heating
circuit is at least 6 hours.
MAX-OPT-TIME (Maximum
bring-forward)
Only active with "OPTIMIZAT = 01 or
02"
The start of heating is brought forward
by no more than this time.
ECONO OPTI (Reduction
optimisation)
Automatic reduction of burner disabling
to end of set heating time.
The burner is not restarted before the
end of the heating period during the set
time period (last heating time only) if it
not already in operation.
This function prevents short-term
heating of the heat generator to the
end of the heating period.
PC-ENABLE
Code number for enabling access to
heating circuit data from a PC
"0000" => access is blocked.
RETURN
Exit heating circuit level => Return to
"User" area.
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