Buderus Hydronic Systems Boiler Controls Operating Instructions
Operating Instructions
AUTOMATIC
11.15am
71
160
180
AUT
140
120
Boiler Controls
Logamatic 2107
6 720 618 081 - 08/2008 US/CA
For the user
Please read carefully before
use.
Production
This product has been tested and is
certified for both the US and Canadian
markets and meets all applicable US and
Canadian standards.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.2
Contents
1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 What you should know about your heating system . . . . . . . . . . . . . . . . . .7
3 Tips on energy-efficient heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Using the controls safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 For your safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Cleaning the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Using your controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6Basic functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Switching the controls ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Switching the controls OFF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3 Standard display and operating values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.4 Changing the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.5 Setting the room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.6 Setting the DHW temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7 Extended functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.1 Changing the operating mode of the solar heating system . . . . . . . . . . . . . . . . . 28
7.2 Selecting the standard program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.3 Entering a vacation program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.4 Setting the warm weather shutdown (WWSD) temperature . . . . . . . . . . . . . . . . . 35
7.5 Setting constant mode for DHW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.6 Changing the standard display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.7 Setting the day and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.8 Daylight savings time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8 BFU remote control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.1 General information on the BFU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.2 Normal heating mode (day mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.3 Setback heating mode (night mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.4 Key functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Advanced programming options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.1 Modifying standard programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.2 Connecting heating phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.3 Creating a new heating program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 3
Contents
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11 Operation in the event of a fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
12 Setup report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
13 Flue gas test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
14 Keyword index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.4
1 Introduction
Introduction
1
When you purchased your Logamatic 2107 controls,
you chose a controls that makes it very simple to control
your heating system. It will help you optimize your heat
output while minimizing energy consumption.
With the Logamatic 2107 controls, you can run your
heating system in a way that takes full account of all your
financial, environmental and health needs. However,
your personal comfort takes always priority.
Although at first glance it may appear very complex, the
controls is extremely simple to use. Preset heating
programs will allow you to heat rooms exactly when you
need them to be heated.
Of course, you or your heating contractor can modify
these preset heating programs and match them
precisely to your requirements.
At the push of a button you can switch from normal
heating mode (day mode) to setback heating mode
(night mode), or you can just let the controls do this
automatically.
You can also recharge your DHW tank at the push of a
button.
Push and turn
Logamatic 2107 controls (brief description)
The Logamatic 2000 control system is designed
primarily for use in single or two-family homes or small
office buildings.
The Logamatic 2107 has a full range of safety features.
The standard features are:
– outdoor reset control of a low temperature boiler with
single-stage burner
– control of a heating zone without mixers
– DHW thermostat
– control of a recirculation pump
With the full complement of equipment, the modular
structure allows 2-stage or modulating burners and an
additional heating zone with mixers to be used, and can
be used to control a solar heating system.
You can adjust the operating panel so that you always
have a good view of the display.
Other functions that you can use are hidden beneath a
flap. You apply the "push and turn" principle to make
your settings here.
Your settings are forwarded from the Logamatic 2107 to
the heating system.
Your heating system offers a wealth of further useful
functions. Some examples of these are:
– the automatic warm weather shutdown (WWSD)
– the vacation function
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 5
1
Introduction
About this manual
Chapter 2 contains a synopsis of heating systems and
their controls.
Chapter 3 gives you some tips on energy-efficient
heating.
In Chapter 4 you will find some important notes on using
the controls safely.
Chapter 5 explains how to get started with your controls.
The "basic functions" are illustrated in Chapter 6.
Generally these functions are sufficient to fine-tune your
heating system to your personal requirements.
Chapter 7 shows you the "extended functions" required
for commissioning.
Chapter 8 explains how to use the remote control for
your heating system.
If you want more in-depth information about the
technology behind your controls, you can use Chapter 9
which illustrates further programming options for
particular situations.
Chapter 10 offers troubleshooting if faults arise.
In Chapter 11 you will learn when and how to activate
emergency mode.
Chapter 12 contains a setup report that you or your
heating contractor can use to record your initial heating
system settings in case you want to revert back to them
at a later date.
In Chapter 13 you will find all you need to know about
the flue gas test that must be carried out once a year.
Finally, the key word index in Chapter 14 will help you to
quickly find the terms you are looking for.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.6
What you should know about your heating system
2 What you should know about your heating system
Modern heating systems offer many functions for saving
energy without sacrificing comfort. The first step in
getting acquainted with this heating technology is the
most difficult. After a short while, however, you will
recognize the advantages of a heating system which is
adjusted to your personal requirements. The more you
are aware of the options offered by your heating system,
the more advantage you will be able to take of them.
How does your heating system work?
Your heating system comprises the boiler with burner,
the heating controls, the pipes and the radiators.
A domestic hot water (DHW) tank heats the water for
shower, bath or washing hands. It is important that the
various components match each another. The burner
consumes fuel (gas or oil) and heats the water inside the
boiler. Using pumps, this hot water is then transported
through the piping system to the radiators or the DHW
tank.
2
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 7
2
What you should know about your heating system
Fig. 1 shows the heating circuit of a pumped central
heating system: The burner (2) heats the water inside
the boiler (1). This heating water is propelled by the
pump (3) through the supply pipe (4) to the radiators (6).
The heating water flows through the radiators, and in
doing so, gives off some of its heat. The heating water
flows back to the boiler via the return pipe (7); there, the
circuit begins again.
The room temperature can be adjusted to your personal
needs using the thermostatic radiator valves (5), if
installed. All radiators are typically supplied at the same
supply temperature. The heat transferred to the room
thus depends only on the heating water flow rate, which
can be manipulated via the thermostatic radiator valves
or the pump speed.
What determines the heat demand of a room?
Fig. 1 Pumped central heating design
Item 1: Boiler
Item 2: Burner
Item 3: Pump
Item 4: Supply line
Item 5: Thermostatic radiator valves (optional)
Item 6: Radiators
Item 7: Return line
The heat demand of a room largely depends on the
following factors:
– the outdoor temperature
– the desired room temperature
– the type of construction/insulation of the building
– the wind factor
– solar irradiation
– the internal heat sources (open fireplace, occupants,
lamps, etc.)
– closed or open windows
– infiltration
You should take these factors into consideration to
achieve a comfortable room temperature.
Fig. 2 Influences on the room climate
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.8
Why do you need a heating system controls?
176 (80)
158 (70)
140 (60)
122 (50)
104 (40)
86 (30)
68 (20)
68 60 50 41 32 23 14 5
(+20) (+15) (+10) (+5) (±0) (-5) (-10) (-15)
The heating controls ensures comfortable heat and
economical consumption of fuel and electrical energy.
It switches the heat generator (boiler and burner) and
pumps ON, if there is a heat demand. In doing so,
it utilizes the components of your heating system at the
correct time.
Furthermore, your heating system records different
variables which influence the room temperature and
compensates to minimize their effect.
What does the heating controls calculate?
Modern heating controls calculate the boiler
temperature required (the so-called supply temperature)
subject to the outdoor temperature. The relationship
between the outdoor temperature and the supply
temperature is described as the characteristic heating
curve. The lower the outdoor temperature, the higher
the supply temperature must be to compensate for
increased heat losses.
What you should know about your heating system
L
t
V
y
l
p
p
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2
The heating controls can operate in three control modes:
– outdoor reset temperature control
– room temperature control
– outdoor reset temperature control with room
temperature influence
Supply temperature in °F (°C)
Outdoor temperature in °F (°C)
Fig. 3 Characteristic heating curve (example)
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 9
2
What you should know about your heating system
Outdoor reset temperature control
With outdoor reset temperature control, the outdoor
temperature is taken into account to determine the
supply temperature. Room temperature fluctuations
through solar irradiation, occupants, open fireplaces or
similar external heat sources are not considered.
If you use this type of control, adjust the thermostatic
radiator valves (if installed) so that the desired room
temperature is obtained.
Room temperature control
With room temperature control the heating controls
calculates the boiler temperature required subject to the
set and the actual room temperature.
To be able to utilize the room temperature control,
a room representative of the whole house is needed
where to mount the room sensor. All factors influencing
the temperature in this "reference room" will also apply
to all other rooms. Not every home has a room which
meets these requirements. A pure room temperature
control has, in such cases, certain limitations.
Should you, for example, open a window in the room
where the room temperature is measured, the controls
will "think" that you have opened the windows in all
rooms in your home and will begin to heat vigorously.
Or conversely: You measure the temperature in a southfacing room with significant solar gain. Now the controls
"thinks" that it is as hot in all rooms as in the reference
room; consequently the boiler output will be severely cut
back so that, for example, the north-facing rooms are too
cold.
Outdoor reset temperature control with room
temperature influence
The outdoor temperature dependent control with room
temperature influence combines the advantages of both
above control modes. The required supply temperature,
which is mainly subject to the outdoor temperature, is
influenced by the room temperature only to a limited
degree. This achieves improved comfort within the room
containing the room sensor, without ignoring the other
rooms.
With this kind of control no thermostatic radiator valves
should be installed in the reference room.
Influence of thermostatic radiator valves?
If you want to reduce the room temperature in the
reference room, for example, and you therefore close
the thermostatic valve further, the flow rate through the
radiator will be reduced and, therefore, less heat is
transferred to the room. This reduces the room
temperature. The heating controls will attempt to
counteract the falling room temperature by raising
the supply temperature. However, raising the supply
temperature will not raise the room temperature,
as the thermostatic valve continues to limit the room
temperature.
A supply temperature which is too high results in
unnecessary heat losses in boiler and pipes. At the
same time, the temperature in all rooms without
thermostatic valves increases due to the higher boiler
water temperature.
With this kind of control no thermostatic radiator valves
should be installed in the reference room.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.10
What you should know about your heating system
2
Why do I need a timer?
Modern heating systems are equipped with a timer to
save energy. This allows setting up an automatic
changeover between two different room temperatures,
subject to time, e.g. a reduced room temperature at
night, while operating your heating system with the
standard room temperature during the day.
You have four options for reducing the room
temperature. Your heating contractor will select and set
up one of these options according to your requirements:
– Total shutdown (no room temperature control)
With total shutdown of the heating system, no pumps or
other system components are running. Heating only
recommences if there is a risk of the heating system
freezing up.
– Reduced room temperature (a reduced room
temperature will be maintained)
Heating with reduced room temperature (night mode)
differs from the standard heating mode (day mode) only
in that it has a lower required room temperature at times
at which less heating is required, e.g. at night.
– Change between total shutdown and reduced
heating subject to room temperature
Different supply temperatures in a heating system can
only be achieved if a three-way valve is installed
between the boiler and the underfloor radiant heating
system, for example.
Using an additional temperature sensor in the supply
of the heating zone, cold return water is added to the
hot supply water via the three-way valve to achieve
the required lower temperature. It is important to note
that heating zones with three-way valves require an
additional pump. This pump enables the second
heating zone to be operated independently of the
first heating zone.
When changing from total shutdown to reduced heating,
the total shutdown will be activated subject to the room
temperature when the actual room temperature exceeds
the set room temperature. This function is only possible
with a room temperature sensor installed.
– Change between total shutdown and reduced
heating subject to outdoor temperature
When changing from total shutdown to reduced heating,
the total shutdown will be activated subject to the
outdoor temperature when the actual outdoor
temperature exceeds the set outdoor temperature.
What are heating zones?
A heating describes the loop taken by the heating water
from the boiler via the radiators and back to the boiler
(Fig. 1 on page 8). A simple heating zone comprises a
heat generator, a supply pipe, a radiator and a return
pipe. A pump installed into the supply pipe circulates the
heating water. Provided that the pipes are well insulated,
all the radiators will be supplied with the same supply
temperature.
Several heating zone may be connected to one boiler,
for example, one heating zone for supplying radiators
and a second heating zone to supply an underfloor
radiant heating system. In this case, the radiators are
supplied at a higher supply temperature than the radiant
heating system.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 11
3
Tips on energy-efficient heating
3 Tips on energy-efficient heating
Here are a few tips on how to heat economically, without
sacrificing comfort:
– Only heat if you need warmth. Use the preset
heating programs (standard programs) on the
controls or those which you have tailored to your
personal needs.
– Ventilate smartly during the cold season: Open the
window three to four times per day for approx. five
minutes. Having the window slightly open all the
time does not provide fresh air changes and
wastes valuable energy.
– Close the thermostatic valves while ventilating.
– Windows and doors are places where a lot of heat
is lost. So check that the doors and windows are
properly sealed.
– Never position large objects such as a sofa or a
desk immediately in front of the radiators, and
maintain a clearance of at least 1 foot (30cm).
Otherwise the heated air cannot circulate and heat
the room adequately.
– In those rooms which you occupy during the day,
a room temperature of 70°F (21°C) is
recommended. 63°F (17°C) may be sufficient at
night. To achieve this, use the standard heating
mode (day mode) and the setback mode (night
mode), (see Chapter 6 "Basic functions",
page 19).
– Heat in an energy-conscious manner during
shoulder seasons too, and make use of the warm
weather shutdown (WWSD) function (see
Chapter 7 "Extended functions", page 28).
– A comfortable room climate depends not only on
the room temperature but also on the relative
humidity. The drier a room, the cooler it feels. You
can optimize the relative humidity with house
plants.
– You can also save energy when heating DHW.
Only operate the DHW recirculation pump via a
timer. Research has shown that it is generally
sufficient to run the DHW recirculation pump for
three minutes in every half hour.
– Arrange with your local heating contractor to
service your heating system annually.
– Never overheat rooms; overheated rooms are
unhealthy and waste money and energy. If you
reduce the daytime room temperature, for
example, from 70°F (21°C) to 68°F (20°C), you will
save around six percent on your heating bill.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.12
4 Using the controls safely
4.1 Correct use
The Logamatic 2107 controls is designed to control and
monitor heating systems in single family homes and
small office buildings. It controls the room temperature
following a heating program, and sets DHW
temperature.
4.2 For your safety
The Logamatic 2107 controls has been designed and
built in accordance with current standards and safety
requirements.
However, accidents resulting from inappropriate
handling of this device cannot be completely excluded.
– Only operate the Logamatic 2107 controls as
intended and when it is in perfect working order.
– Let your local heating contractor instruct you in the
proper operation of your system.
– Please read these operating instructions carefully.
RISK OF LIFE
z In an emergency, switch off at the
WARNING!
WARNING!
emergency shutoff switch outside the
boiler room. Let your local heating
contractor immediately remedy all
heating system faults.
RISK OF LIFE
from electric shock.
z All tasks listed in these service
instructions, which require the opening
of the control panel, must only be
carried out by trained personnel.
4
WARNING!
CAUTION!
Using the controls safely
RISK OF SCALDING
The DHW tank temperature is preset to
140°F (60°C). There is a serious risk of
scalding from hot water above 122°F
(50°C). Verify that your heating contractor
has installed a thermostatically controlled
mixing valve. Please note that pipes and
fixtures can get very hot.
z In such cases, only ever draw-off
mixed water (hot and cold).
SYSTEM DAMAGE
from frost.
The heating system can freeze up if the
control panel has been switched off.
z Protect your heating system against
frost when freezing temperatures are
expected.
z With the controls switched OFF, drain
the water from the boiler, the DHW
tank and the pipes of the heating
system.
4.3 Cleaning the control panel
The Logamatic 2107 control panel is housed in a
resilient plastic housing.
z Only clean the controls with a damp cloth and a mild
cleaning agent.
4.4 Disposal
z Dispose of the Logamatic 2107 controls packaging in
an environmentally responsible manner.
z Dispose of defunct controls in an environmentally
acceptable form, through an approved organization.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 13
5
1
2
3
4
5
7
6
9
8
10
AUTOMATIC
11.15am
69
Using your controls
5 Using your controls
You can set your heating system via your Logamatic 2107 controls. The clearly
arranged controls make it very easy to use.
Controls on the Logamatic 2107 controls
160
180
AUT
140
120
180
160
AUT
140
120
Fig. 4 Controls on the Logamatic 2107 controls
Item 1: Manual reset high limit (STB)
Item 2: Boiler water thermostat
Item 3: Fuse (10 Amp)
Item 4: Switch for Automatic mode, Emergency mode
Item 5: ON/OFF switch
Item 6: Keys for basic functions
Item 7: Dial
Item 8: Keys for extended functions
Item 9: Display
Item 10: Flap
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.14
Using your controls
5
Manual reset high limit (STB)
The manual reset high limit prevents your heating system from running at
temperatures in excess of the temperatures for which it was designed.
Boiler water thermostat
The boiler water thermostat is normally set to "AUT".
Only set the boiler water thermostat to limit the water temperature in emergency
mode.
Switch for Emergency mode
This switch is used to change to emergency mode in the event of a fault, for
example. The default setting is Automatic.
ON/OFF switch
The ON/OFF switch is used to switch the 2107 controls ON and OFF.
Dial
The dial is used to set new values and to move through the menus.
Flap
Keys for the extended functions are hidden behind the flap.
You must therefore open the flap in order to use the extended functions.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 15
5
Using your controls
Keys for basic functions
These keys are used to control the basic functions.
34
2
1
Fig. 5 Keys for basic functions
Item 1: Automatic mode with timer using the internal program
Item 2: Normal heating mode (day mode)
Item 3: Flue gas test (for measuring flue gases)
Item 4: Setback heating mode (night mode)
A green LED is allocated to each key (Fig. 5, Item 1, 2 and 4).
The LEDs inform you of the current operating state.
AUT key
LED lights up = automatic mode is active. Your heating system follows the
internal program. The "normal heating mode" (day mode) LED or the "setback
heating mode" (night mode) LED also lights up.
"Day mode" key (manual mode)
LED lights up = normal heating mode (timer is disabled if AUT is OFF).
"Night mode" key (manual mode)
LED lights up = setback heating mode (timer is disabled if AUT is OFF).
"Flue gas test" button
This is used by your heating contractor to measure the flue gases and perform
a combustion test.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.16
Using your controls
2
6
9
10
11
4
5
1
3
7
8
Keys for extended functions
These keys are used, for example, to enter the day, set the time, select
temperature values, etc.
5
Fig. 6 Keypad for extended functions
Item 1: "Weekday" key – Enter the day of the week
Item 2: "Vacation" key - Set vacation function
Item 3: "Time" key – Set the time
Item 4: "PROG" key – Select program
Item 5: "WWSD" key – Sets the warm weather shutdown
temperature
Item 6: "Temp" key – Select temperature values
Item 7: "DHW" key – Enter the domestic hot water temperature
Item 8: "Heating zone" key – Call up the heating circuits
Item 9: "Enter" key – Returns to standard display
Item 10: "Install" key – Call up the service level
Item 11: "Display" key – Select the standard display
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 17
5
Using your controls
Display
The display shows set and actual values and temperatures, e.g. the measured
room temperature (only with BFU connected), for example.
1
5
Fig. 7 Display
Item 1: Display text
Item 2: Warm weather shutdown is active
°F °C
Item 3: Display value e. g. room temperature
Item 4: Display value e. g. time
4
Temperature unit
2
3
Item 5: Heating zone pump 1
Heating zone pump 2
DHW tank filling pump / solar pump
(flashing)
Burner stage 1,2
c
1234567 Days of the week:
Mixing valve open/closed
DHW recirculation pump
1 = Monday
2 = Tuesday
3 = Wednesday
4 = Thursday
5 = Friday
6 = Saturday
7 = Sunday
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.18
6 Basic functions
160
AUT
180
140
120
160
AUT
180
140
120
Basic functions
6
This chapter contains information on how to start up, shut down, and the simple
controls of the Logamatic 2107 controls.
AUTOMATIC
11.15am
69
6.1 Switching the controls ON
2
4
1
3
Fig. 8 Keys required to start up
z Set the ON/OFF switch to " " (ON) (Fig. 8, Item 4).
z Set the boiler water thermostat to "AUT" (Fig. 8, Item 1).
z Set the Automatic mode, Emergency mode, Heating and DHW switch to
"AUT" (Fig. 8, Item 3).
z Press the "AUT" key to start automatic mode with program (see "Changing
the operating mode" page 22) (Fig. 8, Item 2).
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 19
6
Basic functions
6.2 Switching the controls OFF
Set the ON/OFF switch to "0" (Fig. 8, Item 4).
BOILER DAMAGE
from frost.
CAUTION!
z Frost protection is only active if the control device is switched ON. Switch
off the controls and drain the water from the boiler, the DHW tank and the
pipes of the heating system. The system is only protected from frost, if it
is completely dry.
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.20
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