Bosch FM443/CMS 910 User manual

Operating instructions
Solar module
FM443/CMS 910
6 720 803 142 (2011/06) GB/IE/AU

6 720 803 142 (2011/06) FM443/CMS 910
2|
1Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 About these instructions . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Determined use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Standards and directives . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Explanation of the symbols used . . . . . . . . . . . . . . . . . . . . 4
1.5 Observe this information . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Manual switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 Manual switch (solar circuit 1) . . . . . . . . . . . . . . . . . . . . . 8
2.1.2 Manual switch (solar circuit selection) . . . . . . . . . . . . . . . . . 9
3 Functions of the FM443/CMS 910 . . . . . . . . . . . . . . . . . . . .10
3.1 Operating mode - changing . . . . . . . . . . . . . . . . . . . . . . . .10
3.2 Scanning operating values . . . . . . . . . . . . . . . . . . . . . . . .12
4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

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Safety | 3
1Safety
1.1 About these instructions
This chapter contains general safety instructions which must be
observed when operating the function module FM443/CMS 910.
Also closely observe the further safety instructions that you will find
in other chapters of these operating instructions. Carefully read the
safety instructions before commencing the work described below.
If safety instructions are ignored, severe or even fatal injuries may
result, as well as material losses and environmental damage.
1.2 Determined use
You can integrate the function module FM443/CMS 910 into the
control units of the CFB 810, CFB 840, CFB 910, CFB 930,
CSM 710, CSM 750.
1.3 Standards and directives
The design and operation of this product conforms to the European
Directives and the supplementary national requirements. Its
conformity is demonstrated by the CE designation.
You may request the declaration of conformity. For this see the
contact address at the back cover of these instructions.

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1.4 Explanation of the symbols used
Two levels of danger are identified and signalled by the following
terms:
WARNING!
RISK OF FATAL INJURY
Identifies possible risks associated with a product that might lead
to serious injury or even death if appropriate care is not taken.
CAUTION!
RISK OF INJURY/SYSTEM DAMAGE
Identifies potentially dangerous situations, which might lead to
medium or slight injuries or to material damage.
USER INFORMATION
User tips for the optimum utilisation and adjustment of the
appliance plus other useful information.

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Safety | 5
1.5 Observe this information
The FM443/CMS 910 function module was designed and built
according to the state of the art and the recognised safety-related
standards.
However, material losses resulting from inappropriate operation
cannot be completely prevented.
Before operating the FM443/CMS 910 function module, read these
operating instructions carefully.
1.6 Disposal
zElectronic components must not be disposed of with general
domestic waste.
Dispose of old modules correctly through an authorised
disposal site.
WARNING!
RISK OF FATAL INJURY
from electric shock!
zEnsure that all electrical work is only carried out by an
authorised electrician.
CAUTION!
RISK OF INJURY/SYSTEM DAMAGE
from operator error!
Operator errors can result in injury and damage to property.
zEnsure that children never operate the appliance
unsupervised or play with it.
zEnsure that only personnel able to operate the appliance
correctly have access to it.

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6| Product description
2 Product description
The function module FM443/CMS 910 is designed exclusively for
use in the control units.
With the FM443/CMS 910 function module, you can control a solar
thermal system with one or two solar consumers (e.g. cylinders).
You can use the following functions after installing the FM443/
CMS 910 function module:
– Change solar control operating mode
– Query operating values of the solar consumer "1" or "2", heat
meter and collector array
– Query yield values over recent days, weeks and years

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Product description | 7
Fig. 1 Front panel – FM443/CMS 910 function module
1Manual switch (solar circuit 1)
2LED "3-way diverter valve" for buffer bypass circuit (central heating
backup via cylinder)
3LED "3-way diverter valve" for buffer bypass circuit
(no central heating backup via cylinder)
4Solar circuit pump 1*
5Cyliner 1 maximum temperature
6LED "Module fault" (red) – general module fault
7Collector maximum temperature
8Secondary solar circuit pump 2 or transfer or transfer pump enabled*
9Solar circuit pump 2 or 3-way diverter valve 2 in place of solar heating
circuit 2*
10 3-way diverter valve in place of solar heating circuit 1
11 Manual switch (solar circuit selection)
* LED constantly ON: Pump running (100 %)
LED "flickers": Pump modulates
LED OFF: Pump OFF
3
1
7
4
5
8
9
11
10
6
2

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8| Product description
2.1 Manual switch settings
The various positions of the manual switch have different effects
on the solar circuit or the two solar consumers.
2.1.1 Manual switch (solar circuit 1)
Tab. 1 Manual switch positions
CAUTION!
DAMAGE TO THE SYSTEM
Incorrect use of switch positions 0 and 3can damage the solar
thermal system, and may even destroy individual system
components.
zMake sure that the switch setting is always set to "AUT".
USER INFORMATION
Normally, the manual switch 3should be in the "AUT" position.
Positions 0 and 3are special settings reserved for qualified
personnel only.
Position Effect
Solar heating circuit 1 (solar circuit pump 1) and the
bypass (3-way diverter valve) are switched off.
Solar circuit 1 and bypass are in automatic mode –
this is the standard setting.
Manual mode is enabled.
Solar circuit pump 1 is switched on. The bypass is
not being controlled.

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2.1.2 Manual switch (solar circuit selection)
Position Effect
Solar circuit selection is switched off.
The automatic mode of the function module FM443/
CMS 910 (Solar module) is active; this is the
standard setting.
When there is appropriate solar yield, only solar
consumer "2" (solar circuit 2) is heated.
Automatic changeover is disabled.
When there is appropriate solar yield, only solar
consumer "1" (solar circuit 1) is heated.
Automatic changeover is disabled.
Tab. 2 Manual switch positions
USER INFORMATION
If the manual switch is not in automatic mode, a corresponding
message is displayed on the Programmer programming unit and
the LED "module fault" on the module illuminates.
Inform your heating engineer.

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10 | Functions of the FM443/CMS 910
3 Functions of the FM443/CMS 910
3.1 Operating mode - changing
You can change the solar control unit operating mode. The
operating modes are as follows:
– Manual ON ("Day mode" key)
– Manual OFF (“Night mode” key)
– Automatic operation ("AUT" key)
Open the cover of the Programmer programming unit.
Press and hold down "heating circuit".
Turn the rotary selector until "Heating circuit selection – solar"
appears in the display.
Release "Heating circuit".
USER INFORMATION
The collector protection is ensured with the "Manual ON"
operating mode ("Day mode" key").
USER INFORMATION
The heating circuit which the Programmer programming unit is
assigned to is basically always displayed when the cover of the
Programmer programming unit is closed. If the Programmer
programming unit is not assigned to a heating circuit, then the
lowest installed heating circuit is always displayed.
For further details, please see the technical documentation for
your control unit.

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Functions of the FM443/CMS 910 | 11
Different operating modes
Press manual ON ("day mode" key) to set the solar control unit to
"permanent on".
Press automatic mode ("AUT" key) to set the solar control unit to
automatic mode.
Press manual OFF ("night mode" key) to switch off the solar control
unit.
Manual ON
No control functions are involved when the circuit is running in this
mode; however, the solar thermal system will cut out if either the
collector array or the cylinder(s) exceed(s) the maximum
permissible temperatures.
In constant mode:
– The hot medium of the solar thermal system (e.g. glycol:water
mixture) can flow from the cylinder to the collector array.
– The cold medium (< 0 °C) of the solar thermal system
(e.g. glycol:water mixture) can flow from the collector to the
cylinder – the cylinder temperature drops, so that reheating
must start, for example.
Input range Factory setting
Operation Mode Automatic
OFF
ON
Automatic
USER INFORMATION
The "Manual ON" mode returns automatically to automatic mode
after 30 minutes.

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12 | Functions of the FM443/CMS 910
3.2 Scanning operating values
You can have the operating values of your solar thermal system or
two solar consumers shown on the display of the Programmer
programming unit.
You can scan the following operating values:
– Collector temperature
– Solar cylinder 1 operating mode
– Solar cylinder temperature 1
– Solar cylinder 1 hours run
– Solar cylinder 1 heat amount
– Solar cylinder 2 operating mode*
– Solar cylinder temperature 2*
– Solar cylinder 2*hours run
– Solar cylinder 2*heat amount
– Day amount:Current
Yesterday
Day before yesterday
– Weekly amount:Current
1 week ago
2 weeks ago
– Annual amount
* Only when available and set in the Programmer programming unit!

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Functions of the FM443/CMS 910 | 13
Open the cover of the Programmer programming unit.
Turn the rotary selector until the required values are displayed.
USER INFORMATION
You can only display the solar cylinder heat amounts if the heat
meter set (accessory) is installed in the solar circuit and connected
to the function module FM443/CMS 910.

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14 | Troubleshooting
4 Troubleshooting
Faults in the solar circuit and the maximum two solar consumers
are shown on the display of your Programmer programming unit.
WARNING!
RISK OF FATAL INJURY
from electric shock!
zNever open the control unit.
zIn an emergency, switch off the control unit (e.g. with the
heating system emergency stop switch) or isolate the heating
system from the mains supply by removing the main fuse.
zArrange for your heating contractor to rectify any heating
system faults immediately.
USER INFORMATION
Fault messages continue to be displayed until the associated
faults have been rectified.

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Troubleshooting | 15
Error display
If a fault is shown on the display of your Programmer programming
unit, then you must open the cover of your Programmer
programming unit.
If there are several faults, turn the rotary selector until the faults
affecting the solar circuit or one of the two solar consumers are
indicated.
The following fault messages can be displayed:
– Collector sensor
– Buffer sensor bypass
– Return sensor bypass
– Flow sensor heat amount
– Return sensor heat amount
– Cylinder 1, bottom
– Cylinder 2, bottom
– Flow metering
– Hysteresis setting
USER INFORMATION
Inform your heating engineer if faults arise on the function module
FM443/CMS 910 and these are shown on the display of your
Programmer programming unit.

United Kingdom
Bosch Thermotechnology
Cotswold Way, Warndon, Worcester WR4 9SW
All Enquiries: 0844 892 3004
www.boschthermotechnology.co.uk
Éire
Bosch Thermotechnik GmbH
Sophienstrasse 30-32
D-35576 Wetzlar
www.buderus.de
[e-mail]
C & F Quadrant Ltd.
Unit L40 Cherry Orchard Industrial Estate
Cherry Orchard, Dublin 10
Tel.: [phone]
Fax.: [phone]
www.cfquadrant.ie
E-mail: [e-mail]
Australia
Robert Bosch (Australia) Pty Ltd
1555 Centre Rd
Clayton, VIC 3168
Phone [phone]
Fax [phone]
www.bosch.com.au/hotwater
New Zealand
Phone 0800 4 Bosch or 08 543 352
www.bosch.co.nz