Kromschroeder E8 User manual

E8
Heating Controller
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 company and the VDE regula-
tions. Your heating control system may only be installed
and serviced by appropriately authorised specialists.
E For fixed devices, a facility for mains disconnection in
accordance with EN 60335 must be installed in
compliance with the installation specifications (e.g.
switch).
EThe mains lines insulation must be protected against
damage caused by overheating (e.g. insulation hose).
EThe minimum distance to installation objects in the
vicinity must be chosen so that the permitted ambient
temperature is not exceed during operation (see table -
Technical Data).
EIf the system is not installed properly, persons using it
are at put at risk of fatal or serious injury (electric
shock).
Ensure the controller is de-energized prior to
performing any work on the controller!
Safety
Please read and keep in a safe place
Please read through these instructions care-
fully before installing or operating. Following the installa-
tion, pass the instructions on to the operator.
Warranty conditions
If the system is not installed, commissioned, serviced and
repaired properly, it will render the manufacturer's warranty
null and void.
Conversion
All technical changes are prohibited.
Transport
On receipt of the product, check that the delivery is com-
plete. Report any transport damage immediately.
Storage
Store the product in a dry place. Ambient temperature: see
Technical data.
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 part 4 of this manual.
!The operating manual describes the maximum
version of the controller, meaning that not all
statements are relevant for your device.

General information Description
3
General Notes
!With regard to installation, operation, and
maintenance, the following instructions must be
observed. This device must only be installed by a
specialist technician. Improperly performed repairs
can subject users to considerable risks.
!To comply with applicable regulations, the
instructions for assembly and operation must be
readily available at all times and must be handed
over to the responsible engineer when working on
the device for his attention.
Description
Declaration of conformity
We the manufacturer declare the product E8.0634 is in
conformity with the fundamental requirements of the follow-
ing directives and standards.
Directives:
– 2014/35/EU, 2014/30/EU
Standards:
– EN 60730-1, EN 60730-2-9
The manufacture is subject to the quality management
system in accordance with DIN EN ISO 9001.
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 aux-
iliary 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 in-
crease).
Demand-related circulation pump control
Automatic toggle between summer and winter time
Automatic adjustment of function in accordance
with the sensor configuration

Contents General information
4
Contents
General information 2
Safety information 2
Power connection regulations 2
Safety 2
Warranty conditions 2
Important text passages 2
Installation 2
General Notes 3
Description 3
Declaration of conformity 3
Function 3
Contents 4
Part 1: Operation 7
Operation in normal mode 8
Operating elements 8
ÇOperating mode selection 8
Effect of the operating mode 9
Display in normal operation 10
Changing the settings 11
Operating elements 11
Operating level 12
Areas 13
General 13
Display 13
Users 13
Time programs 13
Expert 13
Expert HS (only for HS via eBUS) 13
Levels 13
Installation 13
Hot-water 13
Htg circuit I / II 13
Part 2: Overview of display values and settings 14
General area 14
Date/Time/Holiday 14
Service 16
Code number Entry 16
RELAY TEST 16
SENSOR TEST 17
SW NO XXX-XX 18
HS MANUAL (only with code no.) 18
BURNER TIME and BURN START
(Not for HS via eBUS) 18
LIMITER TEST XX,X°C 18
SERVICE 19
RESET … 19
Display Range 20
Installation 20
T-OUTSIDE 20
T-HS DES 20
T-HS 20
MOD DEPTH (only in the
case of HS via eBUS connection) 20
Temperature of the multifunction relay 20
T-BUFFER B 21

General information Contents
5
Hot water 22
Heating circuit I / II 22
T-DHW B (storage tank lower temperature) 22
T-ROOM DES A (current value for set room
temperature) 22
T-ROOM (room temperature) 22
User Area 23
Installation 23
GERMAN => Language 23
CONTRAST 23
DISPLAY SEL 23
SELECT PROG 23
Hot water 24
1X DHW (1x Hot water) 24
T-DHW 1 - 3 DES
(Hot water temperature setting) 24
BOB-VALUE (Operation Without Burner) 24
CIRCL-P-DHW (Circulation with hot water) 24
ANTILEGION (Hot water short time heating
function) 24
Heating circuit I / II 25
MODE 25
T-ROOM DES 1 - 3 25
T-REDUCED 25
T-ABSENCE 25
T-LIMIT DAY/T-LIMIT N (Day/Night) 26
HEATSLOPE 26
ADAPTION (heat slope adaption) 27
ROOM INFL (Room sensor influence) 27
T-ROOM ADJ (room sensor adaptation) 27
OPT HEAT UP (Heating optimisation) 28
MAX-OPT-TIME (Maximum bring-forward) 28
OPT REDUCED (Reduction optimisation) 28
PC-ENABLE 28
RETURN 28
Timer Program Area 29
List of available time programs 29
Selecting a timer program 29
Timer/heating program adjustment 30
Expert area 33
Installation 33
CODE-NO 33
BUS-ID HS (- - - -) (not an option in all models) 33
BUS ID1 / 2 (heating circuit number) 33
BUS TERMIN 34
EBUS SUPPLY (supply for eBUS) 34
AF SUPPLY (Outdoor sensor power supply) 34
TIME MASTER 34
RESET TIME (resetting time for I-Controller) 34
MAX T-HS
(Maximum heat generator temperature) 35
MIN T-HS
(Minimal heat generator temperature) 35
T-WARM UP (Warm-up relief) 35
MIN-DELIMI (minimum limit heat generator) 35
HYSTERESIS (dynamic switching hysteresis) 36
HYST TIME (Hysteresis time) 36

Contents General information
6
Operation with two-stage heat generators or
with 2 heat generators 36
LOCK TIME (blocking time 2. burner stage) 36
HYST BURNER 2 (hysteresis 2. burner stage) 36
SEQUENCE CHANGE(time for switching HS) 37
HS COOL-FCT (Cooling function for the heat
generator) 37
T-HS COOL (Start temperature for cooling) 37
Auxiliary relay functions 38
FUNC RELAY 1 (function selection relay 1) 38
T-MF1 (Switching temperature relay 1) 38
HYST MF 1 (Hysteresis relay 1) 38
FUNC RELAY 2 (function selection relay 2) 40
Screed program 42
SCREED (activation of screed drying process) 42
SCREED PROGR (Program setting) 42
Hot water 43
DHW RELIEF(Charge pump lock) 43
PARALLEL DHW (Pump parallel running) 43
T-HS DHW (Heat generator superheating
during hot water preparation) 44
HYST DHW (Hot water charging hysteresis) 44
DHW FOLLOWUP (pump run-down time) 44
THERM INPUT
(storage tank with thermostat) 44
WALL HUNG (for modulating HG) 44
LOAD THROUGH 45
Heating circuit I / II 46
HC FUNCTION
(heating circuit function selection) 46
PUMP MODE (pump operating mode) 47
MIXER OPEN
(mixer dynamics when opening) 48
MIXER CLOSED
(Mixer dynamics when closing) 48
MAX T-FLOW(maximum flow temperature) 48
MIN T-FLOW(minimum flow temperature) 48
T-FROST PROT
(frost protection temperature) 48
T-OUT DELAY (outside temperature delay) 49
SLOPE OFFSET (heating slope distance) 49
B-HEAT SINK (circuit enable) 49
Part 3: General function description 50
Heat circuit control 50
Weather-dependent control 50
Room sensor influence 50
Hot water generation 50
Frost protection function 50
eBUS burner controls 51
EEPROM check 52
Circulation pump control 52
Switched according to heating requirement 52
Delayed pump switch-off 52
Pump blocking protection 52
Mixer motor blocking protection 52

Contents
7
Part 4: Installation and Start-up 53
Installation 53
Assembly / Dismantling 53
Connecting instructions 54
Notes on connecting heat generators
via the CAN BUS
(also with CoCo, e.g. CAN/OT) 54
System diagram 56
System diagram with HS via eBUS 57
Electrical connection 58
Version 1 58
Version 2 59
Power terminal assignments 60
Sensor terminal assignments 61
Remote controls 63
The operator module Merlin BM, BM 8,
and Lago FB 63
Remote control FBR2 63
Sensor resistances FBR 64
DCF receiver 64
PC 64
Maximum delimiter 65
Telephone switch 65
Sensor values / characteristic curve 66
Sensors 67
Outside sensor AF (AFS) S67
Immersion sensor KF (KFS) H/ SPF (SPFS) F67
Strap-on sensor VF (VFAS) v67
Commissioning 68
Commissioning procedure 68
System bus 69
The heating system 69
Bus ID 69
Error messages 70
Troubleshooting 71
Dimensions 73
Technical data 74
Glossary 75
Part 1: Operation

Operation in normal mode Part 1: Operation
8
Part 1: Operation
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
ÇOperating 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)
F1 AUTOMATIC 1 (Automatic mode 1)
(Heating according to timer program 1; DHW according to
DHW program)
F2 AUTOMATIC 2 (Automatic mode 2)
(Heating according to timer program 2; DHW according to
DHW program)
hHEATING (Day mode)
(24 h heating with comfort temperature 1; HW according to
HW program)
CREDUCING (Night mode)
(24 h heating with reduced temperature; HW according to
program)
FSUMMER (Summer mode)
(Heating OFF, HW according to HW program)

Part 1: Operation Operation in normal mode
9
WService (automatic reset after 15 min)
heat generator regulated to heat generator set temperature
= max. heat generator temperature= see page 35 ; when
the heat generator temperature has reached 65 °C, the
consumers are regulated to their flow temperature to dissi-
pate heat (cooling function).
!The cooling function must be explicitly enabled in
the consumer circuits by means of the parameter
B-HEAT SINK.
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.
If the "i= Standby/OFF", and "F= Summer mode" oper-
ating modes are set at the boiler controller, these settings
have a reducing effect on all heating circuits / consumer
circuits that are present in the entire system.
!For mixing controller only on these heating circuits.

Operation in normal mode Part 1: Operation
10
Display in normal operation
18 6
12
24
F
2
A
B
EFH G
D
C
D
!Due to the tolerances of sensors, deviations of
+/- 2 K (2 °C) are normal between various
temperature 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
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; Dheating mode;
Fhot water preparation
G Mode selector switch, the display applies to all heat-
ing 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