Bosch FW 100 Assembly Instructions

INSTALLATION & USER INSTRUCTIONS
WEATHER COMPENSATION CONTROLLER
FW 100
6 720 612 220-00.1R
FOR USE WITH THE FOLLOWING APPLIANCES:
GREENSTAR CDI COMBINATION BOILERS
GREENSTAR CDI SYSTEM BOILERS FITTED WITH OPTIONAL INTEGRAL DIVERTER VALVE
GREENSTAR HIGHFLOW CDI COMBINATION BOILERS
6 720 617 763 (2008/09)

2
Overview of controls and symbols
6 720 617 763 (2008/09)
Overview of controls and symbols
Fig. 1 Controls
6 720 617 763-01.1O
3
34
1
menu info
1
2
35
6
7
8
4
912 h15
18
21
24 h
3
6
advance advance

3
Overview of controls and symbols
6 720 617 763 (2008/09)
Controls
1Turning rotary selector in +direction:
scrolls menu/information up or increases
setting value
Turning rotary selector in – direction:
scrolls menu/information down or decreases
setting value
Pressing rotary selector : opens menu
or confirms setting/value or switches heating
circuit
2Mode selector for heating circuits:
Automatic mode
Continuous Comfort
Continuous Economy
Continuous Frost
3: Bring forwards the next switching
point and the associated operating mode
= Comfort, = Economy, = Frost
for the heating circuit to now.
4: Activate DHW heating immediately.
The domestic hot water cylinder is heated to
the desired temperature for 60 minutes or,
with combination boilers, Comfort mode is
activated for 30 minutes.
5: Open/close menu
6: Show settings
7: Delete/reset setting
8: Return to next menu up
Tab. 1
advance
advance
menu
info
Symbols
Current room temperature
(only with wall mounting)
Flashing segment:
Time now (between 09:30 and
09:45)
Solid segments: time set for operat-
ing mode = Comfort today or
domestic hot water On (or ≥50 °C)
(1 segment = 15 min)
Blank segments: time set for operat-
ing mode = Economy today or
domestic hot water Off (or > 20 °C
and < 50 °C) (1 segment = 15 min)
No segments: time set for operating
mode = Frost today or domestic
hot water ≤20 °C
(1 segment = 15 min)
Operating mode Comfort for heating
circuit
Operating mode Economy for heat-
ing circuit
Operating mode Frost for heating cir-
cuit
Automatic mode for heating circuit
Holiday mode
Burner operating
Back Return to next menu up
Other display information (menu
options) are available. They can be
viewed by turning the rotary selector
.
Tab. 2
9
21
15
3

4
Contents
6 720 617 763 (2008/09)
Contents
Overview of controls and symbols . . . . . 2
Information about this documentation . . 6
1 Symbols and safety precautions . . . . . . . 7
1.1 Symbols . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Safety precautions . . . . . . . . . . . . . 8
2 Technical data for the accessory item . . . 9
2.1 Standard package . . . . . . . . . . . . . . 9
2.2 Intended use . . . . . . . . . . . . . . . . . . 9
2.3 Technical data . . . . . . . . . . . . . . . . 10
2.4 Supplementary accessories . . . . . . 10
2.5 Cleaning . . . . . . . . . . . . . . . . . . . . 10
2.6 Sample system . . . . . . . . . . . . . . . 11
3 Installation (for installers only) . . . . . . . 12
3.1 Installation . . . . . . . . . . . . . . . . . . . 12
3.1.1 Installation in boiler . . . . . . . . . . . 12
3.1.2 Wall mounting . . . . . . . . . . . . . . . . 13
3.1.3 Installation of outside
temperature sensor . . . . . . . . . . . .15
3.1.4 Fitting other accessories . . . . . . . . 16
3.1.5 Disposal . . . . . . . . . . . . . . . . . . . . . 16
3.2 Electrical connections . . . . . . . . . . 16
3.2.1 Electrical connection,
FW 100 in boiler facia . . . . . . . . . . .16
3.2.2 Electrical connection,
FW 100 mounted on the wall . . . . .17
4 Commissioning (for installers only) . . . 18
5 Operation . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Heating and domestic hot water
programmes . . . . . . . . . . . . . . . . . 20
5.1.1 General Information . . . . . . . . . . . 20
5.1.2 Weekly programmes . . . . . . . . . . . 20
5.1.3 Structure of programmes . . . . . . . 20
5.2 Setting programmes . . . . . . . . . . . 21
5.2.1 Viewing on the display and
navigating through the menu . . . . 21
5.2.2 Setting and changing switching
times and operating modes . . . . . 22
5.3 Manually setting operating modes 26
5.3.1 Selecting the heating mode . . . . . . 26
5.3.2 Advancing heating mode before the
programmed time (bringing forward
the next switching point) . . . . . . . 26
5.3.3 Changing the domestic hot
water mode (time-limited) . . . . . . 27
5.3.4 Holiday programme . . . . . . . . . . . . 27
5.4 Changing the specified
room temperature . . . . . . . . . . . . 29
5.4.1 Permanently changing the
specified room temperature . . . . . 29
5.4.2 Changing the specified room
temperature for a limited period . 29
6 MAIN MENU settings . . . . . . . . . . . . . . . 30
6.1 MAIN MENU summary and settings 30
6.1.1 MAIN MENU: Holiday . . . . . . . . . . . 31
6.1.2 MAIN MENU: Heating . . . . . . . . . . . 32
6.1.3 MAIN MENU: Domestic hot water . 33
6.1.4 MAIN MENU: General settings . . . . 35
6.1.5 MAIN MENU: Solar . . . . . . . . . . . . . 35
6.2 Heating programme . . . . . . . . . . . . 36
6.2.1 Timer programmes for heating . . . 36
6.2.2 Temperature levels for operating
modes and heating rate . . . . . . . . 38
6.3 DHW programme . . . . . . . . . . . . . . 39
6.3.1 Domestic hot water programme
operating modes . . . . . . . . . . . . . 40
6.3.2 Timer programme for domestic hot
water with combination boiler . . . 41
6.3.3 Time/temperature level program for
domestic hot water via cylinder . . 42
Chapters against a grey back-
ground are intended for installers.
The pages concerned are identi-
fied by a grey vertical bar at the
side of the page.

5
Contents
6 720 617 763 (2008/09)
6.3.4 Timer programme for domestic
hot water circulation pump
(systems with domestic
hot water cylinder only) . . . . . . . . 43
6.3.5 Parameters
for domestic hot water . . . . . . . . . 44
6.3.6 Thermal disinfection
of domestic hot water . . . . . . . . . . 44
6.4 General settings . . . . . . . . . . . . . . . 46
6.4.1 Time, Date and Auto
switch between GMT - BST . . . . . . 46
6.4.2 Display formats . . . . . . . . . . . . . . . 46
6.4.3 Key lock . . . . . . . . . . . . . . . . . . . . . 46
6.4.4 Language . . . . . . . . . . . . . . . . . . . . 46
6.5 Solar settings . . . . . . . . . . . . . . . . . 47
7 Viewing information . . . . . . . . . . . . . . . . 49
8 INSTALLER SETTINGS menu settings
(for installers only) . . . . . . . . . . . . . . . . 52
8.1 INSTALLER SETTINGS menu
summary and settings . . . . . . . . . . 52
8.1.1 INSTALLER SETTINGS:
System configuration . . . . . . . . . . . 53
8.1.2 INSTALLER SETTINGS:
Heating parameters . . . . . . . . . . . . 53
8.1.3 INSTALLER SETTINGS:
Solar system config . . . . . . . . . . . . 53
8.1.4 INSTALLER SETTINGS:
Solar sys parameters . . . . . . . . . . . 54
8.1.5 INSTALLER SETTINGS:
Fault history . . . . . . . . . . . . . . . . . 54
8.1.6 INSTALLER SETTINGS:
Cust service address . . . . . . . . . . . 54
8.1.7 INSTALLER SETTINGS:
System info . . . . . . . . . . . . . . . . . . 55
8.1.8 INSTALLER SETTINGS:
Floor drying . . . . . . . . . . . . . . . . . . 55
8.2 Configuring the heating system . . . 56
8.3 Parameters for heating . . . . . . . . . . 56
8.4 Configuring the solar
thermal system . . . . . . . . . . . . . . . 60
8.5 Parameters for solar
thermal system . . . . . . . . . . . . . . . 60
8.5.1 Commissioning the solar
thermal system . . . . . . . . . . . . . . . 60
8.5.2 Parameters for the standard
solar thermal system . . . . . . . . . . . 61
8.5.3 Parameters
for solar optimisation . . . . . . . . . . 62
8.6 Fault history . . . . . . . . . . . . . . . . . 64
8.7 Viewing and entering
the customer service address . . . . 64
8.8 Viewing system information . . . . . 64
8.9 Screed drying function . . . . . . . . . 65
9 Troubleshooting . . . . . . . . . . . . . . . . . . . 66
9.1 Troubleshooting using the display
(for installers only) . . . . . . . . . . . . 66
9.2 Troubleshooting without
using the display . . . . . . . . . . . . . . 70
10 Tips on saving energy . . . . . . . . . . . . . . 72
11 Environmental protection . . . . . . . . . . . 73
12 Commissioning log
for the heating system . . . . . . . . . . . . . . 74
13 Individual timer programme settings . . 75
13.1 Heating programme
for heating system . . . . . . . . . . . . . 75
13.2 DHW programme . . . . . . . . . . . . . 79
13.3 Domestic hot water
circulation programme . . . . . . . . . 80
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

6
Information about this documentation
6 720 617 763 (2008/09)
Information about this documentation
Guide to instructions
If you ...
•... are looking for the safety instructions and
an explanation of the symbols, refer to
Section 1.
•... are looking for a summary of the design and
function of the FW 100 heating controller,
refer to Section 2. You will also find the tech-
nical data there.
•... are an INSTALLER and you want to know
how to install, electrically connect and com-
mission this accessory, refer to Sections 3
and 4.
•... want to know how to operate and program
this accessory, refer to Sections 5,6and 13.
There you will also find summaries of the
default settings and setting ranges for the
menus. There are also tables for making a note
of your settings.
•... want to view information about the operat-
ing mode of the heating system, refer to
Section 7.
•... are an INSTALLER and want to make
installer settings or view system information,
refer to Section 8. There you will also find
summaries of the default settings and setting
ranges for the menus. There are also tables for
making a note of your settings.
•... are looking for troubleshooting tables, refer
to Section 9.
•... are looking for tips on saving energy, refer
to Section 10.
•... are looking for a particular reference in the
document, have a look in the Index at the end
of this booklet.
These installation and operating in-
structions contain all details of the
function and operation of the
FW 100 heating controller.
The successful operation of the
FW 100 Weather Compensation
Controller relies upon the mini-
mum outside temperature being
adjusted to UK standards. Refer
to page 59 for further information.

7
Symbols and safety precautions
6 720 617 763 (2008/09)
1 Symbols and safety precautions
1.1 Symbols
Signal words indicate the seriousness of the haz-
ard in terms of the consequences of not following
the safety instructions.
•Caution indicates that minor damage to prop-
erty could result.
•Warning indicates that minor personal injury
or serious material losses could result.
•Danger indicates that serious personal injury
could result. In particularly serious cases, lives
could be at risk.
Notes contain important information in cases
where there is no risk of personal injury or mate-
rial losses.
Conventions used in these instructions for rep-
resenting the menu structure:
•Individual menu levels are separated by the
character > , e.g. Holiday > Start
•Parameters that can be set/selected on a
menu are marked with a bullet point •.
•The operation of a control is indicated by the
symbol for the control:
–means turn rotary selector
–means press rotary selector
–means press and release Menu button
–means press and release Info button
–means press and release Delete/
Reset button
–means press and release Menu Up
button
–means press and release Advance
button
–means press and release Immediate
Domestic hot water button
Safety instructions in this docu-
ment are framed and identified by
a warning triangle which is printed
on a grey background.
Notes are identified by the symbol
shown on the left. They are bor-
dered by horizontal lines above
and below the text.
menu
info
advance
advance

8
Symbols and safety precautions
6 720 617 763 (2008/09)
1.2 Safety precautions
BThese instructions must be observed to
ensure correct operation.
BInstall and commission the boiler and all
accessories in accordance with the installa-
tion instructions.
BThis accessory must only be installed by suita-
bly qualified installers.
BOnly use these accessories in conjunction
with the heating appliances listed. Follow the
connection diagram!
BDo not connect this accessory to the 230 V
mains electricity supply.
BBefore installing these accessories:
Isolate the voltage supply (230 V AC) to the
heating appliance and all additional devices
on the bus.
BNever install this accessory in wet areas.
BInstruct customers about the functions and
operation of accessories.
BRisk of scalding during thermal disinfection:
Supervise short periods of boiler operation
with water temperatures over 60 °C or fit a
thermostatic mixer unit.
BWhen there is a risk of frost, leave the boiler
switched on and follow the frost protection
information.
Risk of damage due to operator error.
Incorrect operation can cause personal injury
and/or damage to property.
BEnsure children do not operate or interfere
with this accessory.
BMake sure that only people who are capable of
operating this accessory properly have access
to it. This appliance must only be operated by
a responsible adult who has been instructed
in, understands and is aware of it's operating
conditions and effects.

9
Technical data for the accessory item
6 720 617 763 (2008/09)
2 Technical data for the accessory item
•This controller is used to display boiler and
system information and to change the settings
shown. The FW 100 can either be used with a
System Boiler fitted with an optional integral
diverter valve or a Combination boiler.
•The controller is a weather-compensated con-
troller for a heating circuit and domestic hot
water provision with time programs:
–Central heating : 3 weekly heating pro-
grammes with 6 switching points per day
are programmable (one programme is
active).
–Domestic hot water : weekly domestic
hot water programme with 6 switching
points per day.
•Options:
–ISM 1module for solar water heating.
•Installation:
–In boiler with BUS-enabled Heatronic 3
–Wall-mounted with BUS link to boiler with
BUS-enabled Heatronic 3
•The controller has a back-up battery sufficient
for at least 6 hours of operation. If the control-
ler is without power for a period longer than
the power reserve then the time and date will
be deleted. All other settings are saved.
2.1 Standard package
Fig. 2 Standard package
1Controller top section
2Base for wall-mounting
3Slide cover
4Installation and operating instructions
5Outside temperature sensor with fixings
2.2 Intended use
The device must only be used for the control of
heating systems. Any other application will be
considered incorrect use. No liability for any
losses resulting from such use is accepted.
The FW 100 can only be connected
to a boiler with BUS-enabled
Heatronic 3. It is intended to be in-
stalled in the boiler but can be wall
mounted.
2x
2x
5
2
4
1
3
6 720 612 481-01.1R
8

10
Technical data for the accessory item
6 720 617 763 (2008/09)
2.3 Technical data 2.4 Supplementary accessories
•ISM 1: module for controlling solar water
heating.
2.5 Cleaning
BIf required, use a damp cloth to wipe the con-
troller casing. Never use aggressive or acidic
cleaning agents for this.
Dimensions Fig. 8, page 13
Rated voltage 10...24 V DC
Rated power
(excluding illumination)
6 mA
Controller output 2-wire BUS
Permissible ambient tem-
perature
0 ... +75 °C
Class of protection III
Protection level:
- installed in Heatronic 3
- wall-mounted
IPX2D
IP20
Tab. 3 Specification
°C ΩAF °C ΩAF
– 40 4124 – 4 1342
– 36 3776 ±0 1149
– 32 3419 4984
– 28 3064 8842
– 24 2718 12 720
– 20 2392 16 616
– 16 2088 20 528
– 12 1811 24 454
– 8 1562
Tab. 4 External temperature sensor measure-
ments

11
Technical data for the accessory item
6 720 617 763 (2008/09)
2.6 Sample system
Fig. 3 FW 100 and CDi System Boiler with optional integral diverter valve and solar installation.
AF Outside temperature sensor
FK Flat plate collector
FW 100 Weather compensation controller
HK Heating circuit
HLC High limit control
ISM 1 Module for solar water heating
HP Heating circuit pump
KW Cold water connection
Option E Thermal disinfection of the solar cylin-
der
PE DHW circulation pump thermal disin-
fection (option E)
RE Flow rate adjuster with indicator
RV Non-return valve
SB Gravity brake
SF Cylinder temperature sensor (NTC)
SP Solar pump
SRV Solar return two port valve
SWC Solar wiring center
System 1 Solar cylinder for solar DHW heating
T1Collector temperature sensor
T2Cylinder temperature sensor, bottom
TWM Thermostatic mixing valve
WSSSolar storage cylinder
WW DHW connection
ZS Boiler with cylinder connection
1) The FW 100 can be mounted in the
boiler or on the wall.
2) See the installation instructions for the
ISM 1 or the cylinder for further infor-
mation
3) Install as close as possible to the cylin-
der
System 1
Option E
230V AC
AF
SB
RE
T
1
SF
WS
S
HK
HP
T
2
RV
KW
PE
RV
WW
6 720 617 767-01.1O
TWM
T
SP
SRV
SWC
HLC
2)
2)
2)
M
ZS
3)
1)
FW 100
1)
FW 100
ISM˚1
FK

12
Installation (for installers only)
6 720 617 763 (2008/09)
3 Installation (for installers only)
3.1 Installation
3.1.1 Installation in boiler
BDetailed description of boiler components,
see boiler installation instructions.
BRemove outer casing.
Fig. 4
BRemove cover plate and dummy cover.
Fig. 5
BInsert top section in slots.
Fig. 6
BClick top section into place and mount cover
plate.
Fig. 7
Danger: Risk of electric shock
BBefore installing these accesso-
ries:
Isolate the voltage supply
(230 V AC) to the heating appli-
ance and all additional devices
on the bus.
6 720 611 792-03.1R
3.
6 720 611 792-04.1R
4.
1. 2.
6 720 612 220-03.1R
6 720 612 220-04.1R
2.
1.
3.
4.

13
Installation (for installers only)
6 720 617 763 (2008/09)
3.1.2 Wall mounting
The installation location must be suitable for con-
trolling the heating system or heating circuit.
The accuracy of the FW 100 is dependent upon
the installation location.
Any radiator in the same room as the FW 100
should not have a thermostatic radiator valve fit-
ted.
The FW 100 should be installed so that the over-
all temperature of the property is monitored, for
example, hallways or landings and not be
installed in a living room or room with supple-
mentary heating.
BSelect the installation location.
Fig. 8
BRemove the top section and slide cover from
the base.
Fig. 9
The mounting surface on the wall
should be level.
6 720 612 481-03.1R
0,3 m0,3 m
1,2 - 1,5 m
0,6 m
119 mm
134 mm
35 mm
1.
2.
3.
6 720 612 220-27.1J

14
Installation (for installers only)
6 720 617 763 (2008/09)
BFit the base.
Fig. 10
BMake the electrical connections (ÆFig. 14 on
page 16 or 15 on page 17).
BRefit top section and slide cover on base.
Fig. 11
6 720 612 220-07.1R
6 mm 3,5 mm6 mm
3,5 mm
3.
2.
1.
6 720 612 220-06.1R

15
Installation (for installers only)
6 720 617 763 (2008/09)
3.1.3 Installation of outside temperature sensor
Control quality depends on installation location of outside temperature sensor AF.
Fig. 12
1/2H(min 2m)
H
1/2Y
Y
1/2H(min 2m)
H
N
S
WE
NW NE
SW SE
6 720 617 763-18.1O

16
Installation (for installers only)
6 720 617 763 (2008/09)
BSelect installation location (ÆFig. 12).
BRemove cover.
BFix sensor housing to external wall with two
screws.
Fig. 13
3.1.4 Fitting other accessories
BFit accessories according to the legal require-
ments and the installation instructions sup-
plied with them.
3.1.5 Disposal
BDispose of packaging in an environmentally
responsible manner.
BWhen replacing components, dispose of the
old parts in an environmentally responsible
manner.
3.2 Electrical connections
3.2.1 Electrical connection, FW 100 in boiler
facia
BInstallation of the controller automatically
produces BUS connection via the three con-
tacts (ÆFig. 6 on page 12).
Fig. 14 Controller installed in facia via BUS con-
tacts in BUS-enabled Heatronic 3.
1.
2.
6 720 610 967-10.2J
The controller recognises that the
boiler is installed via the third con-
tact.
FW 100
124BB
6 720 613 557-02.1R
ST 19
Heatronic 3
AF
AF

17
Installation (for installers only)
6 720 617 763 (2008/09)
3.2.2 Electrical connection, FW 100 mounted
on the wall
BUse electrical cable with a minimum rating of
H05 VV-... (NYM-I...).
BTo avoid inductive interference, lay all bus
cables seperately to lines of 230 V or 400 V
(minimum spacing 100 mm).
BIn case of external inductive interference,
shield the cables.
This ensures that the cables are shielded from
external interference (e.g. heavy current
cables, overhead wires, transformer stations,
radio and television set, amateur radio sta-
tions, microwave ovens etc).
Permissible cable lengths from the BUS-enabled
Heatronic 3 to the controller:
Fig. 15 Controller connected to BUS-enabled
Heatronic 3.
Fig. 16 BUS links connected via branch box (A)
Permissible cable lengths to outside temperature
sensor:
Cable length Cross-section
≤80 m 0.40 mm2
≤100 m 0.50 mm2
≤150 m 0.75 mm2
≤200 m 1.00 mm2
≤300 m 1.50 mm2
Tab. 5
124BB
6 720 613 557-03.1R
ST 19
AF
B
B
AF
FW 100
Heatronic 3
If the BUS cables feature different
cross-sections:
BConnect BUS link via a branch
box.
Cable length Cross-section
≤20 m 0.75 mm2... 1.50 mm2
≤30 m 1.00 mm2... 1.50 mm2
≥30 m 1.50 mm2
Tab. 6
B
2
BB
A
B
2
BB
B
2
BB
6 720 612 220-08.1J
100 mm 100 mm

18
Commissioning (for installers only)
6 720 617 763 (2008/09)
4 Commissioning (for installers only)
For correct commissioning, it is essential that the
following steps are carried out in the order
shown.
1. Switch on the system.
2. When commissioning for the first time or
after a complete reset (all settings have
been reset):
–Turn to select the language and
press to confirm. (For how to
change the language ÆSection 6.4.4 on
page 46.)
3. If the reserve power supply has run out, set
the date and time as follows:
–Turn to select the hour and press
to confirm.
–Turn to select the minute and press
to confirm.
–Turn to select the year and press
to confirm.
–Turn to select the month and press
to confirm.
–Turn to select the day and press
to confirm. (For how to change the
date and time ÆSection 6.4.1 on
page 46.)
4. When the unit is first commissioned, auto-
matic system configuration starts immedi-
ately after entry of the date and time.
–Wait for 60 seconds and then follow the
instructions displayed.
–If automatic system configuration does
not start of its own accord, start it from
the menu ÆSection 8.2 on page 56.
5. Adjust other settings to suit the specifics of
the system, ÆSection 6 starting on page 30
and Section 8 starting on page 52.
6. Fill and bleed the solar thermal system
according to its documentation and prepare
it for commissioning as described in
Section 8.4 on page 60.
7. Adjust other settings to suit the specifics of
the solar thermal system, ÆSection 8.5
starting on page 60.
8. Commission the solar thermal system,
ÆSection 8.5.1 on page 60.
9. Inform the user of the system about its func-
tion and method of operation as follows:
–Explain to the customer how the boiler
and the controller work and how to oper-
ate them.
–Explain to the user the operations for day-
to-day use, e.g. setting the time, operat-
ing modes for the heating systems,
domestic hot water temperature, timer
programmes for heating and domestic
hot water.
–Explain the use of the thermal disinfec-
tion function and the associated risk of
scalding.
–Hand all documentation supplied to the
user.
10. Complete the commissioning log,
ÆSection 12 on page 74.
The functions of the controls and
the meanings of the symbols on the
display are explained on pages 2
and 3.

19
Operation
6 720 617 763 (2008/09)
5 Operation
Introduction
With the FW 100 heating controller, you can auto-
matically control the room temperature and
domestic hot water temperature with a heating
and hot water programme created according to
your own individual requirements.
Fig. 17 Example of heating programme
Once the controller is set to your personal prefer-
ences, you hardly need the menus for “everyday
use”. Nevertheless, it is useful to be familiar with
the basic use of the menus.
Therefore, you should read the whole of
Sections 5.1 and 5.2 below and adjust a heating
or domestic hot water programme to your own
requirements as described in Section 5.2.2.
The procedure for changing a switching point will
illustrate everything you need to know about nav-
igating through the menus and entering settings.
You can then make all other settings in the same
way with the aid of the information in Sections 6
and 8.
The description of the menus reflects the
arrangement of the menu options on the heating
controller. The tables in Sections 6.1, 7 and 8.1
show the entire menu structure. They also pro-
vide details of the adjustment ranges and default
settings for all adjustable parameters. More infor-
mation on the menu options can be found in
Sections 6.2 to 6.5 for user settings, and
Sections 8.2 to 8.9 for installer settings.
The description of a menu options starts with its
menu path. That shows you how to reach the
menu option concerned through the system of
menus. The individual menu levels are separated
by the character > , e.g. Holiday > Start
Some menu options are dependent on others. In
such cases, a page reference directs you to a
description of the menu option on which it
depends. Make use of such page references to
other menu options. They will help you to under-
stand associated functions.
[°C]
[t]
6 720 612 481-70.1J
The controller provides the option
of setting the desired room temper-
ature for the operating mode con-
cerned. This temperature entry is
not the actual room temperature.
This is an orientation value that in-
fluences the required flow tempera-
ture for the heating circuit.

20
Operation
6 720 617 763 (2008/09)
5.1 Heating and domestic hot water
programmes
5.1.1 General Information
The programmes for heating and hot water ena-
ble you to achieve maximum energy savings while
still enjoying optimum comfort in terms of room
temperature and availability of domestic hot
water. That is achieved, for instance, by deacti-
vating water heating in the periods when nobody
requires domestic hot water.
5.1.2 Weekly programmes
All timer programmes are set up to repeat every
seven days. In the programme memory you can
store 6 switching points for every day in each pro-
gramme, i.e. a total of up to 42 switching points.
To simplify programming, you can set switching
points for groups of days as well as for individual
days.
The following groups of days are offered:
•All days
•Mon - Fri
•Sat + Sun
If, for example, you change and store a switching
point for the option Mon - Fri, that change is
simultaneously applied to all days from Monday
to Friday.
5.1.3 Structure of programmes
Programmes for heating and domestic hot water
are always structured in the same way. Up to six
switching points (times) can be specified. A
change of operating mode is specified for each
switching point. The specified operating mode
applies until changed by the next switching point.
Heating programmes
Heating programmes control central heating
operation. There are three modes for heating
operation:
•Comfort
•Economy
•Frost (Frost protection)
For each of those operating modes, there is a
specified room temperature stored on the
FW 100 heating controller (ÆSection 5.4.1,
page 29).
There are a total of three programme spaces (A to
C) available for heating programmes. Each heat-
ing programme contains the switching times for
one week (weekly programme). You can activate
one of the heating programmes for the heating
system.
Domestic hot water programmes
Domestic hot water programmes operate differ-
ently according to the type of hot water system:
•With combination boilers (boilers which pro-
duce domestic hot water instantaneously on
demand) the hot water programme switches
between the following operating modes:
–On: if the Eco button on the boiler is not lit,
domestic hot water is available very quickly
on demand (Comfort mode).
–Off: the built-in plate heat exchanger in the
boiler is not kept constantly hot (Eco
mode); as a result energy is saved. In Eco
mode, the hot tap has to be run for a short
while before the water becomes hot.
•With boilers connected to a hot water cylin-
der, the hot water programme specifies the
desired water temperature (specified temper-
ature).
Having several stored heating pro-
grammes simplifies changing from
one heating programme to another,
e.g. if your job involves periods
when you work different shifts
(night shift/day shift), or for holi-
day periods.