Buderus FM443 User manual

For the user
Please read carefully
before use
Operating Instructions Function module
FM443
Solar Module
6 720 618 607 - 11/2008 US/CA

Contents
FM443 Solar Module - Technical specifications are subject to change without prior notice.
2
1Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Standards, regulations and directives . . . . . . . . . . . . . . . . . 4
1.4 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Please observe these notes. . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Positions of manual switches . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 Manual switch (solar circuit 1) . . . . . . . . . . . . . . . . . . . . . 8
2.1.2 Manual switch (solar circuit selection) . . . . . . . . . . . . . . . . . 9
3 The functions of the FM443 . . . . . . . . . . . . . . . . . . . . . . . .10
3.1 Changing the operating mode . . . . . . . . . . . . . . . . . . . . . .10
3.2 Querying operating characteristics . . . . . . . . . . . . . . . . . . . 12
4 Correcting faults and troubleshooting . . . . . . . . . . . . . . . .14

FM443 Function Module - Technical specifications are subject to change without prior notice. 3
Safety 1
1Safety
1.1 About this manual
This section contains general safety instructions that you must
observe when operating the FM443 function module.
The other sections of the operating instructions contain additional
safety instructions that must also be observed. Read the safety
instructions carefully before carrying out the activities described
below.
If the safety instructions are not observed, serious or even fatal
personal injury and damage to property and the environment may
be caused.
1.2 Designated use
The FM443 function module can be installed in the controls of the
Logamatic 4000 control system.

FM443 Function Module - Technical specifications are subject to change without prior notice.
4
Safety1
1.3 Standards, regulations and directives
1.4 Key to symbols
Two levels of danger are identified and signified by the following
terms:
USER NOTE
Observe all regulations and standards applicable to installation
and operation of the system in your country.
USER NOTE
All electrical components must be approved for the USA and
Canada!
This product has been tested and certified and meets
applicable standards for the US and Canadian markets.
WARNING!
RISK OF LIFE
Identifies possible dangers emanating from a product, which could
cause serious injury or death if appropriate care is not taken.
CAUTION!
RISK OF INJURY/SYSTEM DAMAGE
Indicates a potentially dangerous situation that could cause minor
or moderately serious injuries or damage to property.
USER NOTE
Tip for optimum use of equipment and adjustment as well as
useful information.

FM443 Function Module - Technical specifications are subject to change without prior notice. 5
Safety 1
1.5 Please observe these notes
The FM443 function module has been designed and built in
accordance with currently recognized standards and safety
requirements.
However, damage resulting from improper operation cannot be
prevented completely.
Read these operating instructions carefully before operating the
FM443 function module.
1.6 Disposal
zElectronic components do not belong in household waste.
Dispose of defunct modules correctly through an authorized
disposal site.
WARNING!
RISK OF LIFE
due to electric shock!
zEnsure that all electrical work is carried out by a licensed
contractor.
CAUTION!
RISK OF INJURY/SYSTEM DAMAGE
due to operator error!
Operator errors can cause injury and damage to property.
zEnsure that children never operate the appliance
unsupervised or play with it.
zEnsure that only personnel instructed to operate the appliance
correctly have access to it.

FM443 Function Module - Technical specifications are subject to change without prior notice.
6
Product description2
2 Product description
The FM443 function module has been designed exclusively for use
with the Logamatic 4000 modular control system.
The FM443 function module can be used to control a solar system
with one or two solar consumers (e.g. storage tanks).
The following functions can be used after installation of the FM443
function module:
– Changing solar control operating mode
– Querying operating characteristics of solar consumer "1" or "2",
the heat meter and the collector field
– Scanning the yield over recent days, weeks and years

FM443 Function Module - Technical specifications are subject to change without prior notice. 7
Product description 2
Fig. 1 Front panel of FM443 function module
1Manual switch (solar circuit 1)
2LED "Three-way valve" in case of buffer bypass circuit (central heating
backup via storage tank)
3LED "Three-way valve" in case of buffer bypass circuit (no central
heating backup via storage tank)
4Solar circuit pump 1*
5Maximum temperature storage tank 1
6"Module Fault" LED (red) – general module fault
7Maximum temperature of collector
8Secondary solar circuit pump 2 or transfer pump enabled*
9Solar circuit pump 2 or 3-way valve 2 in solar circuit 2 position*
10 3-way switching valve in solar circuit 1 position
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

FM443 Function Module - Technical specifications are subject to change without prior notice.
8
Product description2
2.1 Positions of manual switches
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!
SYSTEM DAMAGE
Incorrect use of switch positions 0 and 3may cause damage to
the solar system or even destroy individual components of the
system.
zEnsure that the switch is always in the "AUT" position.
USER NOTE
The manual switches 3should normally be in the "AUT" position.
The 0 and 3positions are special settings that should be used by
technicians only.
Position Effect
Solar circuit 1 (solar circuit pump 1) and the bypass
(3-way valve) are switched off.
Solar circuit 1 and the bypass are in automatic mode
– this is the standard setting.
Manual mode is activated.
Solar circuit pump 1 is switched on. The bypass is
not being controlled.

FM443 Function Module - Technical specifications are subject to change without prior notice. 9
Product description 2
2.1.2 Manual switch (solar circuit selection)
Position Effect
The selection of the solar circuit is switched off.
The FM443 (solar) function module is in automatic
mode – this is the standard setting.
If the corresponding solar yield is available, only
solar consumer "2" (solar circuit 2) is loaded.
The automatic switchover is disabled.
If the corresponding solar yield is available, only
solar consumer "1" (solar circuit 1) is loaded.
The automatic switchover is disabled.
Tab. 2 Manual switch positions
USER NOTE
If the manual switch is not in automatic mode, a message to that
effect appears on the MEC2 user interface, and the "Module fault"
LED on the module illuminates.
Notify your heating contractor.

FM443 Function Module - Technical specifications are subject to change without prior notice.
10
The functions of the FM4433
3 The functions of the FM443
3.1 Changing the operating mode
You can change the operating mode of the solar control. The
operating modes are as follows:
– Manual ON ("day mode" button)
– Manual OFF ("night mode" button)
– Automatic operation ("AUT" button)
Open the flap of the MEC2 user interface.
Press and hold the "heating zone" button.
Turn the dial until "select heat zone – solar" appears on the display.
Release the "heating zone" button.
USER NOTE
With the "Manual ON" operating mode ("day mode" button), the
collector protection function is ensured, that is, the pump will not
start up if the collector temperature is above the threshold value.
USER NOTE
When the flap on the MEC2 user interface is closed, it will
generally indicate to which heating zone the MEC2 user interface
is assigned. If the MEC2 user interface is not assigned to any
heating zone, then the lowest installed heating zone is always
indicated.
For more information see the technical documentation for your
control.