Buderus Logano plus SB315 User manual

6301 9201 – 04/2006 GB For the user
Please read thoroughly before use.
Operating instructions
Logano plus SB315 and
Gas-fired condensing boiler

Preamble
2Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Dear Customer,
Buderus Logano plus SB315 and Logano plus
SB315 VM gas condensing boilers have been
developed and built employing the latest technologies
and safety regulations. Ease of operation was given a
particularly high priority.
Please observe the safety instructions and the operation
instructions to ensure optimum safe, economical and
environmentally-friendly use of your system.
Important – General Application Notes
Use this boiler only for its intended purpose and
according to these operating instructions. Maintenance
and repairs must only be carried out by authorised and
qualified personnel.
Use this boiler only in those combinations, together with
accessories and spare parts indicated in the operating
instructions. Any other combination, wearing parts and
accessories may only be used, if these are specifically
designed for the intended application and impair neither
the performance characteristics nor the stipulated safety
requirements.
Subject to technical modifications.
Constant development may lead to minor deviations of
illustrations, functional steps and specifications from
those described/shown.

Index
3
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
1 Notes on hazards and safety instructions . . . . . . . . . . . . . . . . . . . . . . . . .4
1.1 Boiler Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2 Working on the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.1 Instruction in function and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.2 Checking the condition of the heating system . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3 Burner adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.5 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.6 Shutting down the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.7 Filling the heating system and checking for leaks . . . . . . . . . . . . . . . . . . . . . . . 10
2.8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Notes on hazards and safety instructions1
1 Notes on hazards and safety instructions
zKeep naked flames away. Do not smoke.
zAvoid sparks!
Do not use electrical switches,
not even telephones, plugs or door-bells.
zClose the main gas shut-off valve.
zOpen windows and doors.
zWarn all residents and leave the building.
zCall your gas supplier or your local heating contractor
from outside the building.
1.1 Boiler Room
zThe boiler room must be kept free from frost and
must be adequately ventilated.
zNever close or obstruct air ducts and vent apertures
or reduce their size.
zPrevent contamination of the combustion air by
halogenated hydrocarbons (for example found in
spray cans, solvents or cleaning fluids, paints and
adhesives) or by extremely dusty conditions.
zAlways observe all relevant regulations and
requirements as may apply in your country.
zNever store or use combustible material or liquids
near the boiler.
aDANGER!
If you notice a smell of gas:
aDANGER!
In other dangerous circumstances, when
you cannot smell gas:
Immediately close the main gas shut-off
valve and isolate the heating system from
the power supply, e.g. by operating the
heating system emergency stop switch
outside the boiler room.
ATTENTION
Ensure the following safety measures are
taken:

Working on the heating system 2
5
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
2 Working on the heating system
2.1 Instruction in function and operation
The installation engineer should instruct the user in all
functions covering the safe operation of the heating
system and must hand over the relevant technical
documentation for safe keeping.
2.2 Checking the condition of the heating
system
zOpen all radiator valves, shut-off valves and damper
valves in the heating system.
zVent the whole system at the air vent valves
provided.
zCheck, whether the cleanout covers and doors have
been closed.
zCheck the water level in the system and top up, if
necessary.
zCheck the system inlet pressure, on your expansion
vessell. If necessary notify your installer, who may
adjust your heating system to the correct operating
pressure.
ATTENTION
Only qualified personnel must carry out the
installation, the main fuel and flue gas
connections, the initial start-up, the
electrical connection as well as
maintenance or repair work. Only
registered Corgi and ACS may carry out
work on gas components.
NOTE FOR USERS
Please regularly check the water level in
your boiler. Arrange for water to be
replenished, if the water level is too low.
Never use boiler water for domestic use.

6Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Working on the heating system2
2.3 Burner adjustment
Fuel
–LPG and natural gas (observe the details supplied by
the burner manufacturer).
NOTE FOR USERS (corrently not
available in the UK)
The Logatop VM pre-mix gas burner is
matched to the Unit boiler. For other
burners observe the applicable
commissioning instructions.
NOTE FOR USERS
Let a specialist adjust the burner to the
required heat demand for central heating
and DHW (Domestic Hot Water)
production. The correct setting of the
burner must be verified on handover.
Never exceed the rated output stated on
the boiler typeplate.
ATTENTION
Carry out the commissioning in
accordance with the installation,
commissioning and maintenance
instructions.

Working on the heating system 2
7
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
2.4 Initial start-up
zOpen the gas shut-off valve.
zSwitch on the heating system emergency stop
switch.
zPlace the system On/Off switch (Fig. 1, item 1) and
(Fig. 2, item 1) and (Fig. 5, item 1) into position "I"
(ON).
zPlace the switch for the emergency operation of
central heating and DHW (Fig. 1, item 2) and (Fig. 2,
item 2) and (Fig. 5, item 2) to "AUT" (Automatic).
zCommission the control in accordance with the
respective operating instructions.
zPlace the system On/Off (Fig. 3, item 1) into position
"ON".
zCommission the control in accordance with the
respective operating instructions.
Fig. 1 Logamatic 2107 control unit (not available in UK)
Fig. 2 Logamatic 4211 control unit
123
Z
L
123
NOTE FOR USERS
The system must be commissioned by the
system installer (and should be witnessed
by the system user).
ATTENTION
Carry out the commissioning in
accordance with the installation,
commissioning and maintenance
instructions of the respective components.
Particularly observe the installation,
commissioning and maintenance
instructions for Logano plus SB315.
NOTE FOR USERS
For Logamatic control unit, the boiler water
thermostat (Fig. 1, item 3) and (Fig. 2,
item 3) and (Fig. 5, item 3) is preset to
"AUT" at the factory.
Fig. 3 Logamatic 4212 control unit

8Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Working on the heating system2
2.5 Faults
Resetting the burner
zPress the reset button (Fig. 4, item 1) on the gas pre-
mix burner.
Logano plus SB315
–If the burner on Logano plus SB315 goes into a fault
state, the fault lamp on the control illuminates and the
fault will be displayed in the control display.
Resetting the burner
zObserve the operating instruction of the respective
burner.
–The burner will not fire up and the fault lamp on the
burner also does not illuminate.
zCheck whether the electrical supply is switched on,
or whether the control equipment is correctly set up.
zTest the high limit safety cut-out (STB).
Fig. 4 Reset button with integrated fault lamp
1
NOTE FOR USERS
Should the burner not fire after you have
pushed the reset button several times, call
your installer to remove the fault.
NOTE FOR USERS
Notify your installer if the burner will not fire
after the reset button has been pressed
several times.

Working on the heating system 2
9
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
2.6 Shutting down the heating system
zPut the system On/Off switch (Fig. 1, item 1) and
(Fig. 2, item 1) and (Fig. 5, item 1) into position "0"
(OFF).
zClose the gas shut-off valve.
Fig. 5 Logamatic 4311 control unit
13 2
ATTENTION
Protect the heating system against frost
damage if it has been shut down, e.g.
through a fault shutdown, and there is a
risk of frost.

10 Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Working on the heating system2
2.7 Filling the heating system and
checking for leaks
Before commissioning the heating system, check for
leaks to prevent problems during operation. Pressurise
the heating system to 1.3x bar permissible operating
pressure (observe the safety pressure of the safety
valve).
On sealed systems the pressure gauge needle (Fig. 6,
item 2) must be within the green range (Fig. 6, item 3).
Set the red needle (Fig. 6, item 1) on the pressure
gauge to the required system pressure.
zCheck the system water pressure
zShut off the pressure expansion vessel from the
system by closing the cap valve.
zCheck the connections and pipework for leaks.
zOpen the mixing and shut-off valves on the hot water
(primary) side.
zFill the system via an approved filling link.
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:
1. Requirements Fluid Category 3 systems (fig see
right)
zControl valve (stop valve) including a double check
valve on the mains cold water supply pipe
zTemporary connection to e removed after filling
(filling loop)
zControl valve (stop valve) on the heating system
pipework
Fig. 6 Pressure gauge for sealed systems
Item 1: Red needle
Item 2: Pressure gauge needle
Item 3: Green marking
3
1
2
CAUTION!
SYSTEM DAMAGE
through over pressure during leak testing.
Pressure, control and safety equipment
may be damaged through excessive
pressure.
zWhen you carry out a leak test, make
sure that no pressure, control or safety
equipment is fitted which cannot be
isolated from the boiler water chamber.
Fig. 7 Requirements Fluid Category 3 systems

Working on the heating system 2
11
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
2. Requirements Fluid Category 4 systems (fig see
right)
zControl valve (stop valve) on the mains cold water
supply pipe
zStrainer
zVerifiable Backflow Prevention Device with reduced
pressure Zone(RPZ valve assembly) incorporating a
Type BA air gap
zTundish
zControl valve (stop valve) on the heating system
pipework
zOpen the cap of the automatic air vent by one full turn
to allow air to escape.
zSlowly fill the heating system. Observe the pressure
gauge whilst filling.
zClose the water tap and the boiler drain valve once
the required operating pressure has been reached.
zBleed the system via the radiator bleed valves.
zTop up with water if the pressure drops as a result of
bleeding the system.
zTake the hose off the boiler drain valve.
Fig. 8 Requirements Fluid Category 4 systems
CAUTION!
SYSTEM DAMAGE
through frequent topping up.
The heating system may be damaged,
depending on water quality, by corrosion
or scaling if you frequently need to top-up
the heating water.
zEnquire from your installer, whether
you can use your public water
untreated or whether you need to treat
it before filling your system.
zNotify your installer, if you need to
regularly add top-up water to your
system.

12 Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.
Working on the heating system2
2.8 Maintenance
NOTE FOR USERS
The user of a heating system is
responsible for carrying out or for
arranging the cleaning and maintenance of
the boiler, the burner, controls and safety
equipment.
To ensure safe and reliable functioning of
the product, inspection and maintenance
is recommended to be carried out on an
annual basis.
Check the correct function of the entire
system.
Immediately remedy all defects found.
We recommend you arrange a
maintenance contract with a heating
engineer.
DINSTRUCTIONS
Always observe the appropriate
installation, commissioning and
maintenance instructions when carrying
out any maintenance work on the boiler,
the gas pre-mix burner (Unit version) and
on other system components.

Notes
13
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006

Notes
14 Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006
We reserve the right to make any changes due to technical modifications.

Notes
15
We reserve the right to make any changes due to technical modifications.
Operating instructions Logano plus SB315 and Logano plus SB315 VM • Issue 04/2006

Your installer:
Buderus
Cotswold Way, Warndon, Worcester WR4 9SW
Tel.: [phone], Fax: [phone]
www.buderus-commercial.co.uk
In the UK, Buderus is a trading name of
BBT Thermotechnology Ltd.
BBT Thermotechnik GmbH
D-35573 Wetzlar
www.heiztechnik.buderus.de
[email protected]