Buderus Logamax plus GB162-100 kW User manual

User Manual Condensing gas boiler
Logamax plus
GB162-65/80/100
7217 5100 (03/2010) GB
For the end user
Please read thoroughly
before operating the boiler.

Table of contents
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
2
Table of contents
1 Overview of Logamatic BC10 basic
controller 5
2 Permanent clearances 6
3 For your safety 7
3.1 Intended use 7
3.2 Please observe these instructions 7
3.3 Heating room 7
3.4 Combustion air flue gas connection 7
3.5 Quality of the heating system water 7
3.6 Working on the boiler 7
3.7 Maintenance schedule 8
3.8 CE label 8
3.9 Abbreviations 8
4 Explanation of the control unit 9
4.1 General 9
5 Commissioning the heating system 12
5.1 Checking and correcting the system
pressure 12
5.1.1 Filling the heating system 13
5.2.1 Setting the CH (boiler) flow temperature 15
5.2.2 Setting the DHW temperature 16
5.2.4 Setting the room controller 17
6 Operating the heating system 18
6.1 Menu structure 18
6.1.1 Normal Operation menu 18
6.1.3 Settings menu 20
7 Shutting down the heating system 22
7.1 Shutting down the heating system
using the control unit 22
7.2 Shutting down the heating system
in case of an emergency 22
7.3 Shutting down the heating system in case
of the risk of freezing (interruption of use) 23
7.4 Long-term absence while there is a risk
of freezing 23
8 Display information 24
8.1 Display readings 24
8.2 Display settings 24
8.3 Display codes 24
8.4 Identifying and resetting faults 26

Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 3
Preface
Dear customer,
This User Manual has been produced for use with the
following wall-mounted condensing gas boilers:
– Logamax plus GB162-65
– Logamax plus GB162-80
– Logamax plus GB162-100.
This User Manual offers the user of the heating system
an overview of the use and operation of the boiler.
The Quick Reference Manual is located in the boiler,
inside the control panel door(fig. 3 on page 9).
To ensure the safe, economic and environmentally-
friendly use of the heating system we advise you to read
and observe the safety instructions and the User Man-
ual.
Important general instructions for use
This device should only be used for its intended purpose
and in accordance with the regulations. It is a require-
ment and in your own interest, and that of safety that this
boiler must be installed by a Gas Safe registered
installer, in accordance with the relevant requirements
of the current Gas Safety (Installation and Use) Regula-
tions, The Building Regulations, current I.E.E. Wiring
Regulations and the relevant British Standard Codes of
Practise.
The device may only be used in combination with the
units, accessories and spare parts listed in the installa-
tion and maintenance instructions. Other combinations
of units, accessories and consumables are only to be
used if they completely fulfil the specifications involved,
and if system performance and safety are not affected in
any way.
Detailed recommendations are contained in the
following British Standard Codes of Practice.
Regulations and directives for all rated input
installation
BS 1212
BS 4814:1990
Specification for expansion vessels using an inter-
nal diaphragm, for sealed hot water heating sys-
tems.
BS 5482
Code of practice for domestic butane- and propane-
gas-burning installations. Installations at permanent
dwellings, residential park homes and commercial
premises, with installation pipework sizes not
exceeding DN 25 for steel and DN 28 for corrugated
stainless steel or copper.
BS 6281-1:1992
Devices without moving parts for the prevention of
contamination of water by backflow. Specification
for type A air gaps.
BS 6282-1:1992
Devices with moving parts for the prevention of con-
tamination of water by backflow. Specification for
check valves of nominal size up to and including
DN 54.
BS 6283-4:1991
Safety and control devices for use in hot water sys-
tems. Specification for drop-tight pressure reducing
valves of nominal size up to and including DN 50 for
supply pressures up to and including 12 bar.
BS 6880
Code of practice for low temperature hot water
heating systems for output greater than 45 kW.
BS 6891:2005
Installation of low pressure gas pipework of up to
35 mm (R1¼) in domestic premises (2nd family
gas).
BS 7671:2008
Requirements for Electrical Installations IEE Wiring
Regulations seventeenth edition.
BS EN 303-7
Heating boilers. Gas-fired central heating boilers
equipped with a forced draught burner of nominal
heat output not exceeding 1000 kW.
CISBE
Guide Reference sections B7, B11 and B13.
CP 342-2:1974
Code of practice for centralized hot water supply.
Buildings other than individual dwellings.
IGE/UP/2
Gas installation pipework and compressors on
industrial and commercial premises
IGE/UP/10
Installation of gas appliances in industrial and com-
mercial premises, part 1: flued appliances

Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
4
Installation not exceeding 70 kW rated input
BS 5440
Installation and maintenance of flues and ventila-
tion for gas appliances of rated heat input not
exceeding 70 kW net (1st, 2nd and 3rd family
gases). Specification for installation and mainte-
nance of flues.
BS 5449
Specification for forced circulation hot water central
heating systems for domestic premises.
BS 5546
Specification for installation of hot water supplies for
domestic purposes, using gas-fired appliances of
rated input not exceeding 70 kW (2nd. family
gases).
BS 6798
Specification for installation of gas-fired boilers of
rated input not exceeding 70 kW net.
BS 7593
Code of practice for treatment of water in domestic
hot water central heating systems.
BS EN 483
Gas-fired central heating boilers. Type C boilers of
nominal heat input not exceeding 70 kW.
BS EN 677
Gas-fired central heating boilers. Specific require-
ments for condensing boilers with a nominal heat
input not exceeding 70 kW.
Installation of rated input greater than 70kW
BS 6644
Specification for Installation of gas-fired hot water
boilers of rated inputs between 70 kW (net) and
1.8 MW (net) (2nd and 3rd family gases).
BS EN 15417:2006
Gas-fired central heating boilers. Specific require-
ments for condensing boilers with a nominal heat
input greater than 70 kW but not exceeding
1000 kW.
BS EN 15420
Gas-fired central heating boilers. Type C boilers of
nominal heat input exceeding 70 kW, but not
exceeding 1000 kW.
The boiler name is made up of the following elements:
GB: Condensing gas boiler
162: Type
65, 80 or 100: Heating range in kW
Buderus has a policy of constant product improvement,
which may result in deviations in technical data. If you
have any suggestions for improvements or have found
any discrepancies, please do not hesitate to contact us.
Buderus,
Cotswold Way, Warndon, Worchester
WR4 9SW,
United Kingdom
E-Mail: [e-mail]
Document no.: 7217 5100 (03/2010) GB
The manufacturer of the boiler is not responsible for any
damage due to failures to observe the instructions in this
User Manual.
If you have any doubts or questions, please contact the
installer or the service company.
Due to the high efficiency of the boiler a plume of water
vapour may form at the terminal during operation. This
is normal.
Manufacturer’s notes must not be taken in
any way as overriding statutory obligations.

Overview of Logamatic BC10 basic controller 1
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 5
1 Overview of Logamatic BC10 basic controller
fig. 1 BC10 basic controller
1234 567
11 10 9 8
Item Description
1Mains switch (Heating On/Off)
2"Reset" button (fault reset button)
3"Chimney sweep" button (for manual operation)
4"Service" button
5Service Connector (for the registered installer)
6"Burner" LED (On/Off)
7"Heat demand" LED
8Maximum CH (boiler) flow temperature dial
9Display (for status indication)
10 "DHW mode" LED
11 DHW temperature dial
table 1 Key to fig. 1

Permanent clearances2
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
6
2 Permanent clearances
The boiler must be located in an area with the following
permanent clearances.
50 mm
30 mm
250 mm
(with pump group)
0 mm 0 mm
The installer or service engineer must be able to create sufficient service clearences.
These clearences should have been considered at time of installation.

For your safety 3
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 7
3 For your safety
3.1 Intended use
This boiler is only to be used to heat heating system
water and for the domestic hot water (DHW) supply e. g.
in residential and light commercial properties. It can also
be integrated into a cascade system (where several
boilers are interconnected).
The boiler has been factory-fitted with the Logamatic
BC10 basic controller and the "Universal Burner Auto-
mat 3" (UBA 3).
3.2 Please observe these instructions
In other hazardous situations, immediately shut off
the main gas supply and interrupt the power supply
to the heating system by pulling the mains plug from
the socket.
3.3 Heating room
3.4 Combustion air flue gas connection
For room air-dependent operation of the boiler, the
installation room must have the required air vents.
Do not obstruct these vents. The air vents must always
be free.
3.5 Quality of the heating system water
Use only untreated tap water when filling or topping up
the heating system. The use of unsuitable heating
system water will lead to build-ups of sludge and
corrosion, which can in turn result in the malfunctioning
of the boiler and damage to the heat exchanger.
DO NOT treat the water with products such as
pH-adjusting substances (chemical additives) and anti-
freeze or water softeners.
3.6 Working on the boiler
All installation, commissioning, inspection and mainte-
nance activities and any repairs may only be carried out
by a registered Gas Safe installer in accordance with the
instructions in the Inspection and Service Record Log
Book.
DANGER OF FATAL ACCIDENT
from explosive fumes.
If you smell gas, there is a danger of explo-
sion.
No naked lights. No smoking.
Do not use lighters!
DO NOT operate any device that is likely
to produce sparks.
Do not operate any electrical switches,
including telephones, plugs or doorbells.
Shut off the main gas supply!
Open doors and windows.
Warn the residents but do not ring the
doorbells!
Contact the gas utility company from a
telephone located outside the building!
If you can hear gas leaking out, evacuate
the building immediately, prevent other
people from entering, and notify the
police and fire service immediately (from
a telephone OUTSIDE the building).
FIRE HAZARD
due to flammable materials or liquids.
Ensure that there are no flammable
materials or liquids in the direct vicinity of
the boiler.
DAMAGE TO THE INSTALLATION
due to freezing.
Make sure that the room where the boiler
is installed is free from frost.

For your safety3
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
8
3.7 Maintenance schedule
3.8 CE label
3.9 Abbreviations
CH (boiler) flow = Central Heating flow
CH return = Central Heating return
DHW outlet= Domestic Hot Water warm outlet
MCW inlet = Mains Cold Water inlet
UBA 3 = Universal Burner Automat 3
DAMAGE TO THE INSTALLATION
due to insufficient or improper cleaning and
maintenance.
Have the heating system inspected,
cleaned and serviced by a registered
Gas Safe installer once a year.
We advise you to enter into a contract for
annual inspection and maintenance.
The appliance complies with the basic
requirements of the relevant European
directives.
Conformity has been substantiated by the
proper documents which - together with the
declaration of conformity - are filed with the
manufacturer.

Explanation of the control unit 4
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 9
4 Explanation of the control unit
4.1 General
The boiler is fitted with a control unit, the BC10 basic
controller (fig. 2). This controller can be used to con-
trol the heating system.
Push on the control panel to open it (fig. 2).
The BC10 basic controller is located on the left, behind
the door (fig. 3, item. 2).
The User Manual for the boiler is located in a compart-
ment on the rear side of the door (fig. 3, item. 1).
The BC10 basic controller consists of the following
components:
Mains switch
The mains switch (fig. 4, item 1) is used to switch the
boiler on and off.
"Reset" button
If a fault has occurred you may have to restart the boiler
by pressing the "Reset" button (fig. 4, item 2).
This is only required in the event of a "locking" fault.
"Blocking" faults are reset automatically as soon as their
cause has been removed. The display shows [\/r/e| dur-
ing the reset operation.
fig. 2 Opening the control panel
If your heating system consists of several
boilers (cascade system), you have to carry
out the settings on the control units of all
individual boilers.
fig. 3 BC10 and User Manual
2
1
fig. 4 BC10 basic controller
1234 567
11 10 9 8

Explanation of the control unit4
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
10
"Chimney sweep" button
The "Chimney sweep" button (fig. 5, item 3) is used to
put the boiler into manual operation mode, e.g. if the
heating system control (e.g. room controller) is defec-
tive.
The heating system can be operated in manual mode,
independent of a room controller on a temporary basis.
The control system must comply with Part L1 + L2.
In this case, the CH (boiler) flow temperature setting of
the right-hand dial is used as the temperature for boiler
operation. See table 6 "Manual Operation menu".
"Service" button
The "Service" button (fig. 5, item 4) is used to display
the current CH (boiler) flow temperature, the current
working pressure etc. Also see section 6.1.1, page 18.
Service Connector
The heating engineer can connect a Service Tool here
(fig. 5, item 5) for diagnostic purposes when servicing.
"Burner" (On/Off) LED
The "Burner" (On/Off) LED (fig. 5, item 6) lights up when
the burner of the boiler is switched on and it is extin-
guished when the burner is switched off.
The "Burner" (On/Off) LED indicates the burner status.
"Heat demand" LED
The "Heat demand" LED (fig. 5, item 7) lights up when
the control system has made a heat demand and it is
extinguished when this heat demand is no longer
required.
fig. 5 BC10 basic controller
1234 567
11 10 9 8
DAMAGE TO THE INSTALLATION
due to freezing while manual operation is
switched on.
After a power failure or after switching off the
supply voltage, the heating system may
freeze since manual operation is no longer
active.
Re-activate manual operation after
switching on the heating system, so that
the system is permanently in operation
(especially if there is a risk of freezing).
LED Status Explanation
On Burner
operational Boiler water is being heated.
Off Burner off
The CH (boiler) flow temperature
has reached the set temperature or
there is no heat demanded.
table 2 Meanings of "Burner" (On/Off) LED indications

Explanation of the control unit 4
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 11
Maximum CH (boiler) flow temperature dial
The maximum CH (boiler) flow temperature (fig. 6,
item 8) is used to set the upper CH (boiler) flow
temperature limit. The unit is °C.
Display
The heating system status and values can be read out
from the display (fig. 6, item 9). If a fault occurs the dis-
play will immediately show the accompanying fault code.
The fault code display will flash if a locking fault is
detected.
DHW temperature dial
The DHW temperature dial (fig. 6, item 11) is used to
select the required temperature of the hot water in the
hot water cylinder. The unit is °C.
"DHW mode" LED
The "DHW mode" LED (fig. 6, item 10) lights up when
a DHW request has occurred and it is extinguished
when this DHW request is no longer required.
fig. 6 BC10 basic controller
1234 567
11 10 9 8
DAMAGE TO THE INSTALLATION
with underfloor heating: by the floor being
overheated.
Limit the maximum CH (boiler) flow
temperature using the "CH (boiler) flow
temperature" dial (fig. 6, item 8) to the
permissible flow temperature of the floor
heating circuit (usually maximum 40 °C).

Commissioning the heating system5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
12
5 Commissioning the heating system
This chapter explains how you can start up your heating
system, e.g. after a holiday.
5.1 Checking and correcting the system pressure
If the heating system has been newly filled, the system
pressure must initially be checked every day, for 1 week.
The maximum pressure in the heating system, meas-
ured directly at the boiler, must not exceed 2.5 bar.
Switch on the mains switch (fig. 7, item 1) on the
BC10 (position "1").
Press the "Service" button (fig. 7, item 4) until the
system pressure ("P1.6") is shown in the display
(fig. 7, item 9). Also see section 6.1.1, "Normal
Operation menu", page 18.
Fill the heating system as follows if the system pressure
has dropped to below 1.0 bar:
Remove the lower casing from the connection group
(fig. 8).
fig. 7 BC10 basic controller
1234567
11 10 9 8
fig. 8 Removing the lower casing

Commissioning the heating system 5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 13
Unscrew the sealing cap (fig. 9).
5.1.1 Filling the heating system
Filling and refilling of the heating circuit must been
carried out by a method that has been approved by the
Water Regulation Advisory Scheme (WRAS), for the
type of heating appliances, i.e. Domestic (in-house)
Fluid Category 3. Non-Domestic (other than in-house)
Fluid Category 4. Depending on the Fluid Category the
approved method should comprise of the following:
Requirements Fluid Category 3 systems (fig. 10)
– Control valve (stop valve) including a double check
valve on the mains cold water supply pipe.
– Temporary connection to be removed after filling (fill-
ing loop).
– Control valve (stop valve) on the heating system
pipework.
Requirements Fluid Category 4 systems (fig. 11)
– Control valve (stop valve) on the mains cold water
supply pipe.
–Strainer.
– Water non return valve with Reduced Pressure Zone
(RPZ valve assembly) incorporating a Type BA air
gap.
– Tundish.
– Control valve (stop valve) on the heating system
pipework.
fig. 9 Removing cap from drain cock
fig. 10 System fill - category 3
Stop
cock
Mains
supply
Stop coc
k
Test cock
Temporary hose
Heating return
Hose
return
Non return
valve
Non return
valve
SYSTEM FILL
fig. 11 System fill - category 4
Mains
cold water
Stop
cock
Stop
cock
Strainer RPZ
Tundish

Commissioning the heating system5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
14
Open the heating flow and return valves on the pump
group (fig. 12) (open position: parallel to the pipe).
Read the pressure from the pressure gauge on the
pump group or on the control panel of the BC10
(fig. 13).
The pressure in the heating system, which is measured
directly at the boiler, must be at least equal to the
required pre-pressure of the expansion vessel plus
0.5 bar. The minimum pressure must not be less than
1.0 bar (if the heating system is cold). The maximum
pressure in the heating system, measured directly at the
boiler must not exceed 2.5 bar.
Close the water tap and drain cock.
Purge the heating system via the air vents/valves on
the radiators. Start at the lower floor of the premises
and then work your way up from floor to floor (fig. 14).
If the boiler has been in use for approx. one week and
the pressure reading on the display is less than 1.0 bar,
the system has to be topped up.
The pressure loss in a heating system is caused by air
bubbles escaping via fittings and (automatic) air vents.
The oxygen contained in the fresh heating water will also
escape from the heating water after some time and
cause the pressure in the heating system to become
lower.
This explains why it is normal that the heating system
has to be topped up a couple of times after commission-
ing it.
Eventually the system will have to be topped up on aver-
age once a year.
Should it be necessary to top up the heating system
more frequently, water is probably escaping due to a
leakage in the system or a defective expansion vessel.
In this case the cause of the water loss must be repaired
as soon as possible.
fig. 12 Opening the flow and return valves (here: open
position)
fig. 13 Reading the pressure gauge
P1 0
1
fig. 14 Purging the radiators
It is very important that the heating system
is now purged, since all air will collect at the
highest point of the heating system when
the system is slowly filled with water.

Commissioning the heating system 5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 15
5.2 Boiler settings
Proceed as follows to complete the commissioning pro-
cedure:
Slowly open the gas valve by pushing on the gas
valve and turning it ¼ rotation in an anticlockwise
direction (fig. 15). The gas valve is open when it is in
its vertical position.
Turn both dials on the BC10 basic controller (fig. 16,
items 2 and 3) to their required positions
(section 5.2.1 and 5.2.2, from page 15).
Switch on the mains switch (fig. 16, item 1) on the
BC10 (position "1").
5.2.1 Setting the CH (boiler) flow temperature
Set the dial for the maximum CH (boiler) flow
temperature (fig. 16, item 2) to set the required
temperature according to table 3.
fig. 15 Opening the gas valve
1
fig. 16 BC10 basic controller
1
32
If you are using a room controller both dials
must be on "Aut" (automatic operation) to
enable all settings to be made using the
room controller.
If the temperature setting is too low, there is
a risk that the required room temperature
will not be reached.
Dial Function Settings for Description
0Off No heating operation (summer)
40 °C
Required CH (boiler) flow temperature in °C
underfloor heating
Heating mode on
75 °C – 90 °C Radiators
90 °C Convectors
Aut Setting via Logamatic control (e.g. RC35/Logamatic 4121)
table 3 CH (boiler) flow temperature

Commissioning the heating system5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
16
5.2.2 Setting the DHW temperature
The boiler is factory-set to a DHW temperature of 60 °C.
This setting should prevent any legionella bacteria
present in the system from propagating. However, to be
able to meet the various requirements of different users,
the DHW temperature of your boiler can be adjusted.
If required, the boiler can be set to a lower DHW temper-
ature.
Please be aware that setting the boiler to a lower DHW
temperature will bring a slight risk of contamination by
legionella bacteria. If the DHW system is used on a daily
basis, there is virtually no risk of legionella bacteria prop-
agating.
If the DHW system is not used for a long period (e.g.
during a holiday) and a temperature of less than 60 °C
has been set, it is advisable to flush the hot water
cylinder before using it again.
Flushing means fully opening the hot water tap for some
time, so that fresh water will be supplied to the hot water
cylinder. Another alternative is to set the DHW tempera-
ture dial to the 60 °C position prior to a period of
absence.
Set the DHW temperature dial (fig. 17, item 1) to the
required temperature of the hot water in the hot water
cylinder (table 4).
fig. 17 BC10 basic controller
1
Dial
position
Explanation
0DHW mode is off (possibly only heating mode)
ECO DO NOT use this setting!
30–60 The DHW temperature is set permanently on the
BC10 and cannot be changed with a room con-
troller (e. g. RC35).
Aut The DHW temperature is set on the room control-
ler (e. g. RC35). If no room controller is connect-
ed, 60 °C is the maximum DHW temperature.
table 4 Settings on the DHW temperature dial

Commissioning the heating system 5
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 17
5.2.3 Frost protection
The boiler has an integrated frost protection system.
This means that no further frost protection facilities
should be installed on the boiler.
The frost protection switches on the boiler at a CH
(boiler) flow temperature of 7 °C and switches it off at a
CH (boiler) flow temperature of 15 °C.
The heating system is not protected against frost.
5.2.4 Setting the room controller
Make the settings on the room controller (e. g. RC35,
fig. 18). We advise you to check and/or set the
following:
– automatic operation mode
– required room temperature
– required DHW temperature
– required heating programme.
fig. 18 RC35 room controller
The user manual of the room controller
(e. g. RC35) describes how to make these
settings and which benefits they will bring.
You should read and observe the
instructions in the room controller user
manual.

Operating the heating system6
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
18
6 Operating the heating system
6.1 Menu structure
You can navigate through the menu structure of the cen-
tral boiler on the BC10 using the "Reset" button, the
"Chimney sweep" button, the "Service button" (fig. 19,
items 1, 2 and 3) and the display (fig. 19, item 4) in
accordance with the menus in tables 5, 6 and 7.
6.1.1 Normal Operation menu
Information about the operating status of the boiler can
be displayed via this menu. The currently measured val-
ues of the CH (boiler) flow temperature (permanent indi-
cation), the working pressure and the operating codes
are shown. Proceed as follows:
fig. 19 BC10 basic controller
123
4
Normal operation menu
Step 1 [\/2/4| Display value. Currently measured CH (boiler) flow temperature in °C.
Also see section 8.1, page 24.
Step 2 Continue in Normal operation menu? Yes: step 3
No: step 1
Step 3 Press the ebutton.
Step 4 [p/1.6| Display value. Currently measured system pressure in bar.
Also see section 8.1, page 24.
Step 5 Press the ebutton.
Step 6 [-/h/\| Random display code. In this case: Operating phase: Boiler in heating mode.
Also see section 8.3, page 24.
Step 7 Have at least 5 seconds passed without a button being pressed and/or has the mains voltage
been interrupted ?
Yes: step 1
No: step 8
Step 8 Press the ebutton. step 1
table 5 Normal operation

Operating the heating system 6
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements! 19
6.1.2 Manual Operation menu
In manual mode, the heating system can be operated
independent of a room controller (e. g. RC35).
Re-start manual operation after
switching on the heating system, so that
the system is permanently in operation
(especially if there is a risk of freezing).
Manual Operation menu
Step 1 [\/2/4| Display value. Currently measured CH (boiler) flow temperature in °C.
Also see section 8.1, page 24.
Step 2 Activate manual operation? Yes: step 3
No: step 1
Step 3 To activate manual operation: Press and hold the dbutton for more than 5 seconds.
Step 4 [\/2/4} Display code: Operating phase: As soon as a flashing dot is shown in the right-hand
bottom corner of the display, manual operation is active. This means that the boiler is perma-
nently in heating mode. The maximum CH (boiler) flow temperature as set on the maximum
CH (boiler) flow temperature dial of the BC10 basic controller (control panel) now applies. The
"Heat request" LED lights up. DHW mode is possible during manual operation.
Step 5 Press the ebutton.
Step 6 [p/1.6} Display value. Currently measured system pressure in bar.
Also see section 8.1, page 24.
Step 7 Press the ebutton.
Step 8 [-/h/\} Display code: Operating phase: Also see section 8.3, page 24. The boiler is in
manual operation mode.
This means that the boiler is in heating mode while there is no heat request from the controller.
During manual operation the "Settings" menu (table 7 from step 3) can be used to temporarily
change the target boiler performance.
Note:If the boiler performance has been changed temporarily, this must be set again after
ending manual operation, according to the "Settings" menu (table 7, page 20).
Step 9 Press the ebutton.
Step 10 [\/2/4} Display value. Currently measured CH (boiler) flow temperature in °C.
Also see section 8.1, page 24.
Step 11 Has there been a power failure? Yes: step 1
No: step 12
Step 12 Deactivate manual operation? Yes: step 13
No: step 5
Step 13 To deactivate manual operation:
Press and hold the dbutton for more than 2 seconds until the dot disappears.
step 1
table 6 Manual operation

Operating the heating system6
Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
20
6.1.3 Settings menu
Three settings can be made in the Settings menu:
– Target boiler output;
– Target pump run-over time;
– DHW mode target status.
If you will be absent for a long period while there is a risk
of freezing, the target pump run-over time will have to be
set (section 7.4. on page 23).
The target boiler output and the DHW mode
target status should be set by a registered
installer.
Settings menu
Step 1 [\/2/4| Display value. Currently measured CH (boiler) flow temperature in °C.
Also see section 8.1, page 24.
Step 2 Open the “Adjustments” menu? Yes: step 3
No: step 1
Step 3 To open the "Settings" menu: Press and hold the d+ ebuttons for more than 2 seconds.
Step 4 [l/?/?| Display setting. As soon as the display shows [l/?/?|, the "Settings" menu is open.
You can set the boiler output using the first parameter shown on the display (also see
section 8.2, page 24).
Step 5 Adjust boiler output? Yes: step 6
No: step 7
Step 6 Lower:Decrease the target boiler output with the cbutton. The minimum setting is
[l/2/5| = 25 % with an 80-kW boiler and [l/2/0| = 20 % with a 65 and 100-kW boiler.
Higher: Increase the target boiler output with the dbutton. The maximum setting is
[l/?/?| = 100 %. This is equal to the factory setting.
Step 7 Press the ebutton.
Step 8 [f/\/5| Display setting. Set the second parameter as soon as the display shows [f/\/5|.
This parameter shows the target pump run-over time in minutes after heating operation has
ended (also see section 8.2, page 24).
Note: Do not set a pump run-over time of less than [f/\/5| (= 5 minutes).
Step 9 Set the pump run-over time after heating operation has ended? Yes: step 10
No: step 11
Step 10 Lower:Decrease the target pump run-over time after the end of heating operation with the
cbutton. The minimum setting is [f/\/0|= 0 minutes. The factory default setting is 5 minutes.
CAUTION Do not set the target pump run-over time after the end of heating operation to less
than 5 minutes.
Higher: Increase the target pump run-over time after the end of heating operation with the
dbutton. The maximum setting is [f/1/d| = 24 hours.
Step 11 Press the ebutton.
Step 12 [c/\/1| Display setting. Set the third parameter as soon as the display shows [c/\/1|.
This parameter indicates the DHW mode status setting. This enables DHW mode to be
switched off or on. This setting has priority over other DHW mode settings, such as on the
room thermostat. Also see section 8.2, page 24.
Step 13 Set the DHW mode status? Yes: step 14
No: step 15
table 7 Settings