Bosch CRC200 User manual

Installation instructions for contractors
CRC200
6 720 811 153-00.1O
Comfort Room Controller
6 720 821 651 (2017/05)

6 720 821 651 (2017/05) CRC200
2 | Contents
Contents
1 Explanation of symbols and safety instructions . . . . 3
1.1 Guideline to symbols . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Product Information . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.1Control types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.2Possible applications in different heating systems 5
2.2 Important instructions for use . . . . . . . . . . . . . . . . 6
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6 Applicability of the technical documentation . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Installation location . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Power connection . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Attaching or removing the user interface . . . . . . 10
4 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Checklist: Important settings for commissioning 14
6 Switching off power . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.1 System data menu . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.2 Heating zone menu . . . . . . . . . . . . . . . . . . . . . . . . 19
8.3 Function test menu . . . . . . . . . . . . . . . . . . . . . . . . 23
8.4 Info menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.5 Maintenance menu . . . . . . . . . . . . . . . . . . . . . . . . 25
8.6 System info menu . . . . . . . . . . . . . . . . . . . . . . . . . 25
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10 Environmental protection/disposal . . . . . . . . . . . . . . 28
11 Setup log (Service menu/contractor) . . . . . . . . . . . . 29
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6 720 821 651 (2017/05)CRC200
Explanation of symbols and safety instructions | 3
1 Explanation of symbols and safety
instructions
1.1 Guideline to symbols
Warnings
The following keywords are defined and can be used in this
document:
•DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
•WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
•CAUTION indicates a hazardous situation which, if not
avoided, could result in minor to moderate injury.
•NOTICE is used to address practices not related to
personal injury.
Important information
Additional symbols
1.2 Safety instructions
These installation instructions are
intended for competent persons who
are skilled in dealing with water
installations, heating and electrical
systems.
▶ Read the installation instructions
(heat sources, modules, etc.) before
starting the installation.
▶ Observe safety instructions and
warnings.
▶ Observe national and regional
regulations, technical rules and
guidelines.
▶ Document all work performed.
Designated use
▶ Use the product only to control
heating systems in single- or multi-
family dwellings.
Any other use is considered improper.
Any resulting damage is excluded from
the manufacturer's warranty.
Installation, commissioning and
maintenance
Installation, commissioning and
maintenance may be performed only by
a licensed contractor.
▶ Never install the product in wet areas.
▶ Install only genuine spare parts.
Electrical work
Electrical work may be carried out only
by qualified electricians.
▶ Before starting electrical work:
Warnings in this document are identified by
a warning triangle printed against a grey
background.
Keywords at the start of a warning indicate
the type and seriousness of the ensuing risk
if measures to prevent the risk are not taken.
This symbol indicates important information
where there is no risk to people or property.
Symbol Function
▶ Sequence of steps
Cross-reference to other points in this
document or to other documents
• Listing/list entry
– Listing/list entry (2nd level)
Outdoor temperature dependent function
Flashing display (e. g. flashing 1)
Table 1 Additional symbols
6 720 811 156-11.1O
HC assignment
HC assignment

6 720 821 651 (2017/05) CRC200
4 | Product Description
– Isolate all poles and secure against
unintentional reconnection.
– Ensure the system has been
disconnected from the power
supply.
▶ Never connect the product to line
voltage.
▶ Also observe the connection
diagrams for other system
components.
Handing over to the operator
Installing contractor - Please train the
end user in proper use of this product.
▶ Explain operation – especially all
safety-related actions.
▶ Point out that conversion or repair
may be carried out only by a licensed
contractor.
▶ Provide a copy of these installation
and operating instructions to the end
user for future reference.
Risk of damage from frost
The system can freeze if it is switched
off:
▶ Observe the instructions for frost
protection.
▶ Always leave the system switched on
for additional functions, e. g. water
heating or anti-seize protection.
▶ Immediately correct any faults that
occur.
2 Product Description
2.1 Product Information
• The user interface is used to control a heating zone and a
DHW tank charging circuit for water heating directly at the
heat source.
• The user interface incorporates a time program:
– Preset for the heating zone, but freely adjustable with 6
switching times per day
– Water heating may be controlled with or without time
program.
• The user interface displays information about the heat
source and heating system and is used to change the
settings.
• Installation options: On the wall with a BUS connection to a
heat source or CZM100 module with an EMS-BUS Interface
(Energy Management System).
• After operating for 1½ hours, the user interface has a
power reserve of at least four hours. If the power failure
lasts longer than the power reserve, the time and date will
be deleted. All other settings are retained.
• The functional scope and thus the menu structure of the
user interface are determined by the structure of the
system. Your attention is drawn to the importance of the
system structure at the relevant places in these
instructions. The control ranges and factory settings may
differ from the information in these instructions.
2.1.1 Control types
The following control options are available:
Outdoor reset operation ( ):
• simple outdoor reset control
• optimized outdoor reset control.
This operation requires additional optional outdoor sensor
accessory
Room temperature-dependent operations:
• supply temperature control
• power output control
The supply temperature is adjusted using the heating curve in
outdoor reset controls ( ) (with or without room
Functions that are relevant only in conjunction
with the outdoor temperature are identified by
a corresponding symbol ( ).
There are boilers that have integrated outdoor
reset controls. In such boilers, the outdoor
reset control must be deactivated.

6 720 821 651 (2017/05)CRC200
Product Description | 5
temperature influence). Simple and optimized variants are
available.
In the simple outdoor reset control ( ) the heating curve is
a straight line.
In the optimized outdoor reset control ( ) the heating
curve is an actual curve. The relationship between the outdoor
temperature and the supply temperature is therefore very
precise.
Supply temperature control and output control are available for
room temperature-dependent control.
With supply temperature control, the CRC200 reacts to a
difference between the current and the required room
temperature by changing the supply temperature. This method
of control is suitable for apartments and residential houses.
With power output control, which is possible only in systems
with one heating zone and no CZM100, the CRC200 reacts to a
difference between the current and the required room
temperature by changing the heat output of the heat source.
There are fewer burner starts and shorter pump runtimes. This
saves energy and enhances the boiler’s and the pump’s
lifetime.
2.1.2 Possible applications in different heating systems
Heating system with one CRC200
Fig. 1 Example of a heating system with one heating zone
HC 1 and a CRC200 as controller (single-family
home)
The CRC200 serves as the controller for heating systems with
one heating zone and water heating (Fig. 1). The user
interface is installed in a suitable living space.
Heating systems with several CRC200
Fig. 2 Example of a heating system with three heating
zones with one CZM100 and one CRC200 per zone
as the controller.
Usually, in heating systems with several heating zones, each
zone is individually controlled by a CRC200 (Fig. 2). In this
case, the following applies:
Each CRC200 controls its heating zone independently. In other
words, the CRC200 controls the assigned heating zone
completely (e. g. HC 3, Fig. 2) in terms of room
temperature, time program, vacation program and immediate
tank charging. In addition to the automatic mode, manual
operation is also possible.
Central settings are adopted from the CRC200 in the first
heating zone. This includes parameterization of water heating
and the low loss header / header sensor. This means that water
heating settings for the storage tank temperature and thermal
disinfection are made in heating zone 1 on the CRC200. On the
CRC200 for heating zones 2 ... 8, it is possible to set one
operating mode for water heating. The heat source selects the
highest value from the set point values received. In addition,
manual override for tank charging is possible. When the system
is operating, all requests from the individual CRC200 are
processed, i. e. each request for hot water is implemented. If
the vacation program is active in the CRC200 for heating
zone 1, only the assigned first heating zone and the hot water
set point in the CRC200 for heating zone 1 are affected. Water
heating is still based on the set point values in the CRC200 for
heating zones 2 ... 8. This ensures on-demand heating and
availability of hot water for each heating zone based on the
settings in each individual CRC200.
HC 1
CRC200
HC 1
6 720 811 153-03.1O
CRC200
HC 2
HC 3
HC 1
6 720 811 156-01.1O
CZM100
CRC200
CRC200

6 720 821 651 (2017/05) CRC200
6 | Product Description
2.2 Important instructions for use
• The user interface may be connected only to heat sources
with Bosch EMS-BUS or CZM100 for multi-zone
applications.
• This user interface is intended only for wall-mounted
installation (Chapter 3, starting at page 7).
2.3 Scope of delivery
Fig. 3 Scope of delivery
[1] User interface
[2] Technical documentation
[3] Screws and anchors
WARNING: Risk of scalding!
▶ If hot water temperatures are set above
140 °F (60 °C) or thermal disinfection is
switched on, a mixer must be installed.
NOTICE: Risk of damage to the floor!
▶ Radiant floor heating must be installed
only as a heating zone with mixer and an
additional temperature switch to protect
the floor from overheating, by delivering
too hot supply water.
6 720 811 156-02.1O
B
U
S
B
U
S
i
i
1
2
3

6 720 821 651 (2017/05)CRC200
Installation | 7
2.4 Technical Data
Fig. 4 Dimensions
2.5 Accessories
Function modules of the EMS control system:
•CZM100: Zone module for up to three heating zones
• Outdoor temperature sensor for outdoor reset control
types or WWSD (Warm Weather Shut Down) and frost
protection.
Only compatible with the following products:
• CRC100 and CZM100
Applicability of these instructions to EMS-capable modules
These instructions also apply to the user interface when used in
conjunction with CZM100 (accessory).
2.6 Applicability of the technical documentation
All information related to BUS systems and heating controllers
contained in the technical documentation of e.g. heat sources
applies also to the present user interface.
3 Installation
The detailed system schematics for mounting the hydraulic
assemblies and the associated control devices can be found in
the installation manual of CZM100.
3.1 Installation location
The room in your home where the controller is installed is the
reference room. If room temperature-dependent control is
active, the room temperature in this room serves as the
reference variable for the entire system. If the outdoor reset
control is enabled to factor in the room temperature, the room
temperature functions as an additional reference variable.
The control quality depends on the installation location.
6 720 811 153-08.1O
3 3/4"
95 mm
3 3/4"
95 mm
63/64"
25 mm 1 5/16"
33 mm
Dimensions (W × H × D) 3 3/4" × 3 3/4" × 1 5/16"
(95 × 95 × 33 mm)
(Fig. 4)
Rated voltage 8 ... 16 V DC
Nominal current 6 mA
BUS interface EMS (2-wire BUS)
Control range 41 ... 86 °F (5 ... 30 °C)
Permissible ambient
temperature
32 ... 122 °F (0 ... 50 °C)
Protection class III
Protection IP20
Table 2 Technical Data
DANGER: Risk of electric shock!
▶ Before installing this product:
Disconnect the heat source and all other
BUS users from the line voltage across all
poles.
This user interface is intended only for wall-
mounted installation. Do not install in the heat
source.

6 720 821 651 (2017/05) CRC200
8 | Installation
• The installation location (= reference room) must be
suitable for controlling the zone (Fig. 5, Page 8).
• The user interface must be installed on an interior wall.
• Do not place obstructions within 2 1/2' (0.75 m) below
CRC200.
Fig. 5 Installation location in the reference room
If there is no suitable reference room, we
recommend changing the settings to a purely
outdoor temperature dependent control.
6 720 811 153-03.1O
≥ 4'
(≥ 1.2 m)
2'
(0.6 m)
≥ 3 1/4'
(≥ 1 m)
2 1/2'
(≥ 0.75 m)

6 720 821 651 (2017/05)CRC200
Installation | 9
3.2 Installation
Fig. 6 Mounting the base
3.3 Power connection
Power is supplied to the user interface via EMS BUS.
Connections are not polarity specific.
Maximum total length of the BUS connections with AWG18
(0.75 mm2): 492 ft. (150 m)
▶ If several BUS users are installed, maintain a minimum
clearance of 4" (100 mm) between the individual BUS
users.
▶ If several BUS users are installed, connect the BUS users in
series or in a star pattern.
▶ To avoid inductive interference: Make sure all low-voltage
cables are routed separately from line voltage cables (min.
clearance 4" / 100 mm).
▶ In the case of outside inductive effects, use shielded cable
and ground one end of the shield. Do not connect the shield
to the connecting terminal for the ground conductor in the
module; use the building ground instead, e.g. unused
grounded terminal or water pipe.
▶ Establish a BUS connection to the heat source.
Fig. 7 Connection of the user interface to a heat source
1) Terminal identification:
On heat sources with an EMS BUS system terminals
are: BUS or BB
The outdoor temperature sensor (accessory) needs to be
connected to the heat source.
▶ Observe the instructions for the heat source when
connecting the electrical supply.
When sensor leads are extended, apply the following lead
cross-sections:
• Up to 66 ft. (20 m) with AWG18 (0.75 mm2)
• 66 ft. (20 m) to 330 ft. (100 m) with AWG16 (1.50 mm2).
The installation surface on the wall must be flat.
▶ Install the base on a wall. (Fig. 6).
If the maximum total length of the BUS
connections between all BUS users is
exceeded or the BUS system has a ring
structure, commissioning of the system is not
possible.
6 720 811 156-05.1O
18-2 AWG (2x 1mm²)
1/4"
(6.35 mm)
1/4"
(6.35 mm) 9/64" (3.5 mm)
CRC200
6 720 811 156-06.1O
BUS/
BB
1)
B
U
S

6 720 821 651 (2017/05) CRC200
10 | Installation
3.4 Attaching or removing the user interface
Attaching the user interface
1. Attach the user interface at the top.
2. Snap the bottom of the user interface into the base.
Fig. 8 Attaching the user interface
Removing the user interface
1. Push the knob on the underside of the base.
2. Pull the bottom of the user interface forwards.
3. Remove the user interface by lifting upward.
Fig. 9 Removing the user interface
6 720 809 984-06.1O
1. 1.
2.
6 720 809 984-07.1O
3.
1. 2.

6 720 821 651 (2017/05)CRC200
Controls | 11
4 Controls
Fig. 10 Controls
Item Element Designation Explanation
1Dial ▶ Turn to change a setting value (e. g. temperature), or select from among the menus or
menu items.
▶ Press to open a menu or menu item, confirm a set value (e. g. temperature) or a
message.
2 auto button ▶ Press to activate the automatic mode with the time program.
3 man button ▶ Press to activate hold mode (manual operation) for a permanent room temperature set
point.
4Back button ▶ Press to return to the higher menu level or discard a changed value.
▶ Hold down to switch from a menu to the standard display.
5 menu button ▶ Press to open the main menu.
▶ Hold down to open the service menu.
Table 3 Controls
6 720 809 984-40.1O
2
3
5
4
1
auto
man
menu

6 720 821 651 (2017/05) CRC200
12 | Commissioning
5 Commissioning
▶ First make all electrical connections and then carry out the
commissioning.
▶ Observe the installation instruction for all components and
assemblies in the system.
▶ Switch on the power supply only after all modules are
coded.
▶ Set the heat source to the maximum supply temperature
and DHW temperature needed and activate the automatic
mode.
▶ Switch on the system.
Commission the user interface as shown in Table 4.
The date, time and commissioning date are still present in the
user interface when commissioning after a reset.
You can find an overview of all settings in Chapter 7, starting at
page 15.
5.1 Basic settings
During the initial commissioning: Fill out the
commissioning report in the operating
instructions and in Chapter 11, Page 29.
Basic settings
Once the user interface is connected to the power supply, the language selection appears on
the display. The current setting starts to flash.
▶ Turn the dial to set the language and then press the dial.
The display switches to the date setting. The current setting starts to flash. The user interface
may obtain the current date automatically via the BUS system.
▶ Turn the dial to set the date and then press the dial. The format for displaying the date can
be changed (operating instructions).
The display switches to the time setting. The current setting starts to flash. The user interface
may obtain the current time automatically via the BUS system.
▶ Turn the dial to set the time and then press the dial. The format for displaying the time can
be changed (operating instructions).
The display switches to the heating zone assignment. The current setting starts to flash.
▶ Press the dial in order to confirm the setting.
-or-
▶ If several CRC200 are installed in the system:Turn the dial to assign one of the heating
zones 2 to 8 and then press the dial.
The display switches to automatic configuration. The current setting starts to flash.
▶ Turn the dial to select YES and then press the dial.
Automatic configuration starts to detect the connected modules and temperature sensors.
During automatic configuration the Auto-Config. display flashes
Without automatic configuration following menu items have to be configured additionally:
Pump conn. (only heating zone 1), Control type, Ext.RoomSens. and Solar module
Table 4 Basic settings
6 720 811 156-22.1O
english
english
6 720 811 156-21.1O
07/20/2014
07/20/2014
6 720 811 156-20.2O
Time of Day
Time of Day
6 720 811 156-11.1O
HC assignment
HC assignment
6 720 811 156-12.1O
Auto-Config.
Auto-Config.

6 720 821 651 (2017/05)CRC200
Commissioning | 13
Following automatic configuration, the display switches to guided system configuration. Which settings are available during
guided system configuration depends on the installed system.
While in guided system configuration you can press the Back button to switch to the previous menu item.
A flashing display means you should turn the dial to change the setting or press the dial to confirm the shown setting.
Available only on the user interface for heating zone 1 (not visible when a combi boiler is used).
DHW appears on the display. You can set wether a hot water system is installed or how it is
installed. For further details see table 5.
▶ If the display is not flashing, press the dial.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.
Available only on the user interface for heating zone 1.
LLH Sensor appears on the display. You can set wether a low loss header is installed and where
its temperature sensor is connected. For further details see table 5.
▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.
Available only on the user interface for heating zone 1.
Recirculation appears on the display. You can set wether a recirculation pump is installed. For
further details see table 5.
▶ Press the dial.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.
Heat. System appears on the display. You can set wether high temperature or low temperature
heat radiation applies. For further details see table 5.
▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.
Max. Suppl.T. appears on sthe display. You can set the maximum supply temperature. For
further details see table 9.
▶ Press the dial.
▶ Turn the dial to change the temperature.
▶ Press the dial to switch to the next setting.
Frost protect appears on the display. You can set wether frost protection depends on room
temperature or outdoor temperature. Outdoor temperature sensor must be installed for
outdoor dependent frost protection. For further details see table 9.
▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.
Basic settings
Table 4 Basic settings
6 720 811 156-30.1O
DHW
DHW
6 720 811 156-31.1O
No
No
6 720 811 156-32.1O
Recirculation
Recirculation
6 720 811 156-33.1O
High Temp
High Temp
6 720 811 156-34.1O
Max. Suppl. T.
Max. Suppl. T.
6 720 811 156-35.2O
by Room Temp.
by Room Temp.

6 720 821 651 (2017/05) CRC200
14 | Switching off power
5.2 Checklist: Important settings for
commissioning
Always perform commissioning so that the system operates as
needed. Based on experience, the following settings are very
important to satisfy the system user:
•Control type: outdoor reset ( ) with or without the
influence of the room temperature, or room temperature-
dependent
•Heating curve ( ): Adapted with reference to the
design temperature, minimum outdoor temperature and
other settings
•DHW priority: A heat demand for hot water has priority or
hot water and heating have the same priority (if possible
hydraulically)
•Time program: Determines when heating is active, see
user manual for details.
How to change settings in the service menu is described in
Chapter 8. Alternatively see the user manuals.
6 Switching off power
The user interface is powered via the BUS system and is always
on. The system is switched off only for maintenance work,
for example.
▶ Disconnect power from the entire system and all BUS
users.
Available only when outdoor sensor is connected and Frost protect is set to by Outdoor Temp
or Room - Outside.
Frost thresh. appears on the display. You can set the threshold outdoor temperatur for frost
protection. For further details see table 9.
▶ Press the dial.
▶ Turn the dial to change the temperature.
▶ Press the dial to switch to the next setting.
Heating Start appears on the display.
▶ Press the dial.
▶ Turn the dial to select YES and press the dial.
Configuration has been completed. The installation date of the CRC200 is set
automatically.
-or-
▶ Turn the dial to select NO and press the dial.
The system configuration continues.
Upon selecting YES the CRC200 is configured as a controller. The heating system and possibly water heating are operating.
Following configuration, only the menu items relevant for the configured system are displayed.
Basic settings
Table 4 Basic settings
6 720 811 156-36.1O
Frost thresh.
Frost thresh.
6 720 811 156-14.1O
Heating start
Heating start
The installation date of the CRC200 is set
automatically when the configuration is
confirmed initially by starting the heating
system.
After a prolonged power failure or extended
period of idleness, the date and time may need
to be reset. All other settings are retained
permanently.

6 720 821 651 (2017/05)CRC200
Main menu | 15
7 Main menu
▶ If the standard display is active, press the menu button
briefly to open or close the main menu.
▶ Turn the dial to select a menu item or change the value of a
setting.
▶ Press the dial to open the selected menu item, activate the
input field for a setting or confirm a setting.
Fig. 11 Main menu summary
1) Set language.
2) Available only on the user interface for heating zone 1.
3) Service menu (Chapter 8)
Further information on operation/navigation in
the main menu can be found in the operating
instructions.
Main Menu
Heating Holiday Settings
Temperatures Holiday Prog. deutsch 1)
Heating Info Time/Date
Setback Heating Time of Day
Time program Outdoor Temp. Date
Reset Sched. Operat. stats Time correc.
Summer/Winter Room Temp. Format
Temp.thresh. DHW Date format
DHW Operat. stats Time Format
Tank loading Set temp. Temp. Format
Mode Actual Temp. Sensor calib.
Recirculation 2) Contrast
Disinfection 2) Service 3)
6 720 821 651-17.1O

6 720 821 651 (2017/05) CRC200
16 | Service menu
8 Service menu
▶ If the standard display is active, press and hold the menu
button for about three seconds until the service menu
appears in the main menu.
▶ Press the dial to open the already highlighted service
menu .
▶ Turn the dial to select a menu item or change the value of a
setting.
▶ Press the dial to open the selected menu item, activate the
input field for a setting or confirm a setting.
Fig. 12 Overview of the service menu
1) Available only on the user interface for heating zone 1.
2) Available if supported by heat source.
Main Menu PID charact. Room Temp.
Service Opt. pump run DHW Operation
System Data Room influence Set DHW Temp
HC assignment Contin. heat DHW Temp.
Auto-Config. Frost protect Maintenance
Pump conn. 1) Frost thresh. Maint.message 1)
Heat. System DHW Priority Maint. date 1)
Control type Function Test Reset Maint. 1)
Ext.RoomSens. Activation Current Fault
DHW 2) System pump Fault History
LLH Sensor 1) HC Pump Clear Fault
Recirculation 1) Info System info
Solar module Outdoor Temp. Install.date
WWSD 1) Appl. oper. Control unit
Min.outs.temp Appl.set sply Control SW
Damping Appl.act.sply SW controller
Building Type Appl.max.sply HC Module SW
Reset All LLH Temp.
Heating circ. HC Operation
Design Temp. HC set.sply
Base line HC act. sply.
Base point Set Room Temp
Max. Suppl.T.
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Service menu | 17
8.1 System data menu
The heating system is configured automatically or manually in
this menu. With automatic configuration, important data are
preset.
Menu item Default
setting
Control range Functional description
HC assignment 1 1 ... 8 Number of the assigned heating zone
Auto-Config. NO NO | YES NO: Manual configuration of the system
YES: Automatic system configuration, detects connected modules and
temperature sensors and presets important data.
Pump conn. see
desciption
Heat Source |
HC Module
Heat Source: Heating pump connected to heat source (only for heating
zone 1). Heat Source is default if no CZM100 is detected.
HC Module: Heating pump connected to CZM100. HC Module is default if
CZM100 is detected.
Heat. System High Temp High Temp |
Low Temp.
Assign the heating system to the heating zone to cancel the factory default.
Control type Room supply External simple |
External opt. |
Room supply |
Room output
Select control type (details in Chapter 2.1.1, Page 4)
Outdoor reset operation ( ):
External simple: simple outdoor reset control
External opt.: optimized outdoor reset control
Room temperature-dependent operations:
Room supply: supply temperature control
Room output: power output control (not possible if CZM100 is detected).
Ext.RoomSens. NO NO | YES NO: The room temperature is determined by the internal temperature
sensor of the user interface.
YES: An additional room temperature sensor connected to the user
interface (future feature; currently not available).
DHW
(factorysettings
depend on
installed heat
source)
No | Yes, 3-wy vlv |
Yes, pr. pump
DHW is only available if supported by the heat source (not visible at combi
boilers)
No: No hot water system installed in conjunction with boiler
Yes, 3-wy vlv: Hot water system is supplied via 3-way valve
Yes, pr. pump: Hot water system is supplied via indirect tank
LLH Sensor /
System Supply
Sensor
No No | Yes, on mod. LLH Sensor / System Supply Sensor is only available for heating zone 1
No: No low-loss header installed
Yes, on mod.: Low-loss header installed (even if temperature sensor is
connected at heat source).
Recirculation NO NO | YES Recirculation is only available for heating zone 1
NO: The recirculation pump cannot be controlled by the heat source.
YES: If the recirculation pump is to be controlled by the heat source, the
recirculation pump must be activated here as well.
Solar module NO NO | YES NO: No solar module connected.
YES: No function in US/CA; no solar module available
WWSD 70 °F (21 °C) OFF | 50...86 °F
(10...30 °C)
Heating is off in the entire system at this set outdoor temperature. This
saves energy at higher outdoor temperatures. (only for heating zone 1)
Table 5 Settings in the system data menu

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18 | Service menu
Minimum outside temperature (outdoor design)
The minimum outside temperature is the average value of each
of the coldest outside temperatures or recent years, and it has
an influence on the heating curve. The value of the region can
be taken from the required heat load calculation that should be
done for every building, or from the climate zone chart
▶ Set the minimum outside design temperature for the
heating system.
Min.outs.temp
()
14 °F
( – 10 °C)
– 31...50 °F
( – 35...10 °C)
Minimum outdoor temperature is the outdoor design temperature used in
the heat loss calculation; only available when an outdoor temperature
sensor is connected and outdoor reset mode is enabled.
Damping ( ) ON ON | OFF This setting is only available when an outdoor temperature sensor is
connected and outdoor reset mode is enabled.
ON: The set type of building affects the measurement of the outside
temperature. The outside temperature is delayed (dampened).
OFF: The measured outside temperature is included undampened in the
outdoor reset control.
Building Type
()
Medium Tight | Medium |
Loose
A measure of the thermal storage capacity of the heated building
Tight: High storage capacity such as a brick house with thick walls
(significant damping of the outdoor temperature)
Medium: Medium storage capacity
Loose: Low storage capacity such as a non-insulated weekend house made
of wood (low damping of the outdoor temperature)
Reset All NO NO | YES NO: The current settings have been retained.
YES: The factory settings are being restored (except time and date).
Menu item Default
setting
Control range Functional description
Table 5 Settings in the system data menu
Minimum outside temperature in °F ( °C)
Atlantic City 5 ( – 15) Montreal – 9 ( – 23)
Anchorage New Orleans 19 ( – 7)
Bermuda 59 (15) New York 0 ( – 18)
Boston 0 ( – 18) Ottawa – 9 ( – 23)
Buffalo – 5 ( – 21) Philadelphia 0 ( – 18)
Cleveland – 4 ( – 20) Phoenix 25 ( – 4)
Chicago – 9 ( – 23) Pittsburgh – 4 ( – 20)
Dallas 10 ( – 12) Portland – 5 ( – 21)
Detroit – 9 ( – 23) Quebec – 15 ( – 26)
Honolulu 59 (15) Richmond 15 ( – 9)
Houston 19 ( – 7) San Diego 35 (2)
Indianapolis – 10 ( – 23) San Francisco 36 (2)
Los Angeles 36 (2) St. Louis 0 ( – 18)
Miami 36 (2) Toronto – 9 ( – 23)
Minneapolis – 20 ( – 29) Washington 0 ( – 18)
Table 6 Minimum outdoor temperature for USA

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8.2 Heating zone menu
Settings for the heating zone are made in this menu. With
automatic configuration, important data are preset.
Afterwards, only the relevant menu items appear in this menu.
Example: In case of outdoor reset control, the menu item for
room temperature-dependent control is not displayed.
NOTICE: Risk of damaging or destroying the
screed!
▶ If radiant floor heating (Low Temp.) is
installed, observe the maximum supply
temperature recommended by the
manufacturer.
Menu item default setting Control range Functional description
Design Temp
()
113 °F (45 °C) 86...140 °F (30...60 °C)
(with Low Temp.
heating) | 86...185 °F
(30...85 °C) (only High
Temp)
Only visible if Control type = External opt. (Optimized outdoor
reset control) is selected:
This is the supply temperature requested at the outdoor design
temperature (see setting Min.outs.temp). The control range
depends on the heating system selected.
Base point
()
77 °F (25 °C) 68 °F (20 °C) ... End
point (with Low Temp.
heating)
Only visible if Control type = External simple (simple outdoor
reset control) is selected:
This is the supply temperature at fixed outside temperature of
68 °F (20 °C). The range is limited by the setting of the End
point.
End point ( ) 113 °F (45 °C)
(with Low Temp.
heating)
Base point ... 140 °F
(60 °C) (with Low Temp.
heating)
Only visible if Control type = External simple (simple outdoor
reset control) is selected:
This is the supply temperature requested at the outdoor design
temperature (see setting Min.outs.temp). The range is limited
by the setting of the Base point.
167 °F (75 °C)
(with High Temp
heating)
Base point ... 185 °F
(85 °C) (with High Temp
heating)
Max. Suppl.T. 118 °F (48 °C)
(Low Temp.
heating) | 167 °F
(75 °C) (only High
Temp)
86...140 °F (30...60 °C)
(with Low Temp.
heating) | 86...185 °F
(30...85 °C) (only High
Temp)
Maximum supply temperature; the control range depends on
the heating system selected.
PID charact. Medium Fast | Medium | Slow Control characteristics (only visible when room temperature-
dependent control is selected):
Fast: Fast (2k P range), older home, loose construction, limited
insulation
Medium: Average (3k P range), Minimum building
requirements, medium construction
Slow: Slow (4k P range), newer home, tight construction, well
insulated
Opt. pump run NO NO | YES YES: Optimized pump operation active: The heating pump runs
as little as possible on the basis of the supply temperature
(available only with supply temperature control). This saves
energy but may also reduce comfort.
NO: If the system has more than one heat source installed (e. g.
a hybrid system) or a buffer storage tank is installed, this
function must be deactivated.
Table 7 Settings in the heating zone menu

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Threshold temperature for frost (frost protection limit
temperature)
Room Feedback
()
6 °F (3 °C) OFF | 2 ... 18 °F
(1...10 °C)
The outdoor reset control functions independent of the room
temperature.
The higher the setting value, the greater the influence of the
room temperature on the heating curve.
Contin. heat
()
OFF OFF | – 22...50 °F
( – 30...10 °C)
At this set outdoor temperature, setback no longer occurs. The
system operates in the heating mode to prevent greater cooling.
Frost protect by Room Temp. OFF |
by Outdoor Temp ( ) |
by Room Temp. | Room -
Outside ( )
Note: To ensure frost protection for the heating zone, set
outdoor temperature-dependent frost protection. This setting
is independent of the set control type.
Outdoor temperature-dependent settings are only shown with
connected outdoor temperature sensor.
OFF: Frost protection off
Other: Frost protection is deactivated/activated on the basis of
the temperature selected here (Threshold temperature for
frost (frost protection limit temperature), Page 20)
Frost thresh. 41 °F (5 °C) – 4...50 °F
( – 20...10 °C)
Threshold temperature for frost (frost protection limit
temperature), Page 20
DHW Priority ON ON | OFF ON: Water heating is activated, the heat demand of the heating
system is canceled
OFF: Water heating is activated, the heat demand of the heating
system is being met simultaneously (only possible if the hot
water system is supplied via the tank pump)
Menu item default setting Control range Functional description
Table 7 Settings in the heating zone menu
NOTICE: Risk of destroying hot water-
conducting system components if the
threshold temperature for frost is set too low
and room temperatures are below 32 °F
(0 °C)!
▶ Only contractors are permitted to adjust
the factory setting of the frost threshold
temperature (41 °F / 5 °C) for the system.
▶ Do not set the threshold temperature too
low.
Damage resulting from a frost threshold
temperature set too low is not covered
under warranty!
▶ Assured frost protection of the system is
not possible without an outdoor
temperature sensor.
Outdoor temperature-dependent settings are
only shown with connected outdoor
temperature sensor.