Operating Instructions
Low-temperature
oil boiler
DANGER!
If these instructions are not followed exactly, a fire
or explosion may be caused with serious property
damage or loss of life and serious injury.
Do not store or use gasoline or any other flammable liquids or vapors in the vicinity of this system or
any other heating system.
6 720 804 873-00.1T
Logano G115 WS US/CA
6 720 804 873 (2012/10) EN-US
C
Contents
Contents
1 General safety instructions and explanation
of symbols 3
1.1 Explanation of symbols 3
1.2 Safety instructions 3
2 Product description 4
2.1 Intended use 4
2.2 Certification and testing mark 4
2.3 Disposal 4
2.4 Product description 4
3 Commissioning the heating system 5
3.1 Turning the heating system on 5
3.2 Checking the operating pressure, topping up
the boiler water and bleeding air from the system 5
3.2.1 Checking the operating pressure 5
3.2.2 Topping up the boiler water and bleeding
the system 5
3.3 Starting the heating system using the controls 6
3.4 Turning the heating system off 6
3.5 Action in an emergency 6
3.6 Operating tips 6
3.7 Why is regular servicing important? 7
4 Troubleshooting 7
4.1 Identifying operating modes and resetting faults 7
Logano G115 WS US/CA – 6 720 804 873 (2012/10)2
General safety instructions and explanation of symbols
1 General safety instructions and explanation of symbols
1
1.1 Explanation of symbols
Warnings are indicated by a warning triangle and a grey
background.
Signal words are used to indicate the level of risk if counter measures are
not taken.
• Caution indicates that minor damage to property may occur.
• Warning indicates that minor personal injury or severe damage to
property may occur.
• Danger means that severe personal injury may occur. Very serious
cases may result in death.
Notes are identified in the text by this symbol. They are
separated by horizontal lines above and below the text.
Notes contain important additional information.
Notes do not contain any warnings or information about hazards or risks.
1.2 Safety instructions
If you smell flue gas
B Switch off the boiler (Æ page 6).
B Open windows and doors.
B Inform an authorized heating contractor.
Installation
B Correct and proper installation and adjustment of the burner and the
controls are the fundamental requirements for safe and economical
operation of the boiler.
B The boiler may only be installed or converted by an approved heating
contractor.
B Do not modify any parts that carry flue gas.
B The hot water tank may only be used for heating domestic hot water.
B Never shut off safety valves!
Water must be able to escape from the safety valve for the hot water
system and piping when the water is being heated.
Maintenance and servicing
Heating systems should be regularly maintained for the following
reasons:
• to maintain a high level of efficiency and to operate the system
economically (low fuel consumption),
• to achieve a high level of operational reliability,
• to maintain the cleanest combustion.
B sign a maintenance and servicing contract with an approved heating
contractor covering annual servicing and maintenance.
B The flue system must be inspected once a year. Have all parts that
show any signs of damage from corrosion or other causes replaced.
B The boiler must be serviced by qualified boiler service company once
a year. Servicing must include the burner, the entire flue and
combustion air system and any air inlet/outlet vents. All parts that
show any signs of damage from corrosion or other causes must be
replaced.
Recommendation for users:
B Servicing and repairs may only be carried out by a trained heating
contractor.
B Have any faults immediately corrected in order to prevent damage to
the system.
B The operator is responsible for the general and environmental safety
of the heating system.
B Use only genuine Buderus spare parts. Damage caused by the use of
parts not supplied by Buderus is not covered by the Buderus
warranty.
Danger by failing to consider your own safety in an emergency such
as a fire
B Never put yourself at risk. Your own safety must always take the
highest priority.
Dangers posed by explosive and flammable materials
B Any work on components that carry oil may only be carried out by a
certified heating contractor.
B Do not use or store flammable (paper, thinners, paints, etc.) near the
boiler.
B Maintain a clearance of at least 16 inches from the boiler.
Risk of poisoning. Insufficient ventilation may cause dangerous flue
gas leaks.
B Never close off or reduce the size of air inlet or outlet vents.
B The boiler must not be operated until the obstruction has been
removed.
Risk of water damage
B
Do not use the appliance if any part of it has been under water.
B Call in a qualified customer service technician immediately to check
the appliance and replace any controls that have been under water.
Combustion air
B Keep the combustion air free of corrosive substances (e. g.
halogenated hydrocarbons that contain chlorine or fluorine
compounds). In that way you will prevent corrosion.
Instructing the operator
B The operator must read the information on how the boiler works and
have the heating system installer explain how to operate it.
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2
Product description
2 Product description
To ensure safe, economical and environmentally friendly use of the
heating system, we recommend that you carefully read the safety
instructions and operating instructions.
These instructions provide the operator of the heating system with an
overall view of the use and operation of the boiler.
2.1 Intended use
The boiler is designed for heating central heating system water and
domestic hot water, in residential buildings or apartment buildings, and
light commercial installations. Other uses are not intended.
2.2 Certification and testing mark
This appliance has been tested and certified to meet rules and
regulations in place for the US and Canadian markets.
2.3 Disposal
B Dispose of boiler packaging in an environmentally responsible
manner.
B All heating system components that have to be replaced should be
disposed of in environmentally responsible manner at an authorized
disposal site.
2.4 Product description
The boiler (Æ Fig. 1) is a low-temperature oil-fired appliance.
The main components of the boiler (Æ Fig. 1) are:
• Control panel
• Boiler jacket
• Boiler heat exchanger with insulation
The controls monitors the boiler and system water temperatures and
controls the burner. It also includes the safety devices.
The boiler can alternatively be fitted with a simple Aquasmart control.
The boiler jacket prevents heat loss and reduces noise.
The boiler heat exchanger transfers the heat generated by the burner to
the heating water. The thermal insulation reduces radiant and standby
heat loss.
1
2
3
4
5
Fig. 1 Boiler without burner
[1] Control panel
[2] Boiler jacket
[3] Boiler heat exchanger with insulation
[4] Burner door
[5] Burner door panel
6 720 615 225-01.1RS
Logano G115 WS US/CA – 6 720 804 873 (2012/10)4
3 Commissioning the heating system
3.1 Turning the heating system on
Before switching on, ensure that:
• the operating water pressure is sufficient,
• the fuel supply has been turned on at the main shut-off valve, and
• the heating system emergency shut-off switch is in the ON position.
3.2 Checking the operating pressure, topping up the
boiler water and bleeding air from the system
The water used for filling the heating system loses a substantial amount
of volume in the first few days due to the release of its gas content. This
causes air pockets to form and the heating system starts to make noises.
B With new heating systems, check the operating pressure daily at first,
topping up the boiler water and bleeding the system and radiators (if
so equipped).
B Later on, check the operating pressure monthly, topping up boiler
water and bleeding the boiler and radiators (if so equipped).
3.2.1 Checking the operating pressure
Your heating contractor will have set the system to the required
operating pressure of at least 15 psi (1 bar) and entered the setting in
Tab. 1, page 5.
B Read the current operating pressure (psi) and temperature (°F) from
the temperature/pressure gauge.
B If the temperature/pressure gauge needle drops below the minimum
pressure marker of 15 psi, the operating pressure is too low. Top up
the system until the contractor's selected operating pressure is
reached.
Commissioning the heating system
3.2.2 Topping up the boiler water and bleeding the system
Ask your heating contractor to show you where the boiler fill & drain
valve for topping up the heating system is located in your heating
system.
CAUTION: Health risk from contaminated domestic
water.
B It is imperative that you observe all regulations and
standards applicable in your country regarding
prevention of domestic water contamination.
CAUTION: Risk of damage to system due to temperature
stress.
If you fill the heating system when it is hot, the resulting
temperature stress can cause stress cracks and a leak in
the boiler.
B Only fill the heating system when cold (the flow
temperature should be no more than 100 °F).
B If there the fill valve is not hard piped to the water supply, you will
need to connect a hose.
B Fill the heating system by slowly opening the fill valve. Observe the
pressure gauge (pressure/temperature gauge) while doing so.
B Close the boiler fill valve once the required operating pressure has
been reached.
B Bleed the system via the air vent and the radiator bleed valves (if so
equipped).
B Top up with additional water if the pressure drops as a result of
bleeding the system.
CAUTION: Risk of system damage due to frequent
topping up.
If you have to top up the heating water frequently, the
heating system may suffer damage from corrosion or
scaling due to repeated introduction of oxygen.
B Ask your heating contractor if the local water can be
used untreated or whether it needs to be treated.
B Notify your heating contractor if you find you need to
top up your heating system frequently, as there may
be a leak.
3
7 747 010 720-24.2RS
Fig. 2 Pressure/temperature gauge
Logano G115 WS US/CA – 6 720 804 873 (2012/10) 5
Design operating pressure
(optimum setting) _____________ psi
Maximum heating system operating
pressure
(standard = 30 psi)
Table 1 Operating pressure (entered by system installer)
Operating pressure
_____________ psi
3
Commissioning the heating system
3.3 Starting the heating system using the controls
Switching on the controls automatically places the burner on standby.
The burner is then ready to start. For more information, consult the
instruction manual for the controls and the burner.
B Set the boiler temperature control to "AUT" (Automatic mode). In that
setting, the controls operates the boiler.
B Set the ON/OFF switch to position "I" (ON).
Information on operating the system, e.g. setting the
temperatures, can be found in the controls'
documentation.
2
1
7 747 019 141-28.1RS
Fig. 3 Switching on the controls
(e.g. Logamatic 2000 )
Starting up the system using the Aquasmart control
B Switch on emergency shut-off switch ("ON" position). This turns on
the heating system.
3.4 Turning the heating system off
With Buderus controls (Æ Fig. 3, page 6)
B Switch off the on/off switch on the controls
(position "0"). This switches off the boiler and all its components
(such as the burner).
With Aquasmart control (Æ Fig. 4, page 6)
B Switch off the emergency shut-off switch ("OFF" position). This
switches off the boiler and all its components.
Completing final operations
B Shut off fuel supply by closing main valve.
CAUTION: Risk of system damage from freezing.
If the heating system has been switched off, it may
freeze up.
B Leave the heating system permanently switched on as
much as possible.
B Protect your heating system against freezing by
draining the heating system and hot water pipes at the
lowest point.
3.5 Action in an emergency
Use the heating system emergency shutoff switch
located outside the boiler room or the heating system
circuit-breaker for emergency shutdown.
In the event of an emergency, e. g. a fire, proceed as follows:
B Never put yourself at risk of fatal injury. Your own safety must always
take the highest priority.
B Shut off fuel supply by closing main valve.
B Isolate the heating system from the mains power supply by means of
the heating system emergency stop switch or the appropriate
electrical fuse/circuit breaker.
3.6 Operating tips
7 747 019 141-35.1RS
Fig. 4 Switching the heating system on/off using the emergency shut-
off switch (without Buderus controls)
The right fuel
To ensure it operates properly, the heating system requires fuel of the
correct type and grade.
CAUTION: Risk of system damage from use of incorrect
fuel.
B Only use the fuel specified. The correct fuel is entered
in Tab. 2 by the heating system installer.
Use only this fuel
__________________________
____________________________________________ Stamp/Date/Signature
Table 2 Fuel to be used (entered by heating system installer)
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Information on the boiler room
CAUTION: Risk of boiler damage from contaminated
combustion air.
B Keep the combustion air free of corrosive substances
(e.g. halogenated hydrocarbons that contain chlorine
or fluorine compounds).
B Prevent heavy accumulation of dust.
Troubleshooting
4
CAUTION: Risk of system damage from water.
B In the event of severe risk of flooding, disconnect the
boiler from its power supply and shut off the fuel
supply before water enters the boiler room.
B After the flood has subsided, ask your installer to
check the heating system before starting it up again.
B All parts that have been in contact with flood water
must be replaced by a qualified heating contractor.
3.7 Why is regular servicing important?
Heating systems should be regularly maintained for the following
reasons:
• to achieve a high level of efficiency,
• to operate the system economically (low fuel consumption),
• to maintain the cleanest possible combustion.
CAUTION: Risk of system damage due to lack of or
inadequate cleaning and maintenance.
B Have your heating system inspected, cleaned and
maintained by a heating contractor once a year.
B We recommend you sign a contract covering an
annual inspection and maintenance on an as-required
basis.
1
6 720 615 225-04.1RS
Fig. 5 Resetting the burner
[1] Burner
Correcting burner faults
B Press reset button on burner.
CAUTION: Risk of system damage due to too many
resets. Always follow the burner manufacturer's
instructions.
Too many resets can damage the bur-ner's ignition
transformer.
B Do not press the reset button more than three
times in a row. If the fault does not reset after the
third attempt, localize and rectify the fault with
the help of the burner documentation. Notify a
service contractor if necessary.
4 Troubleshooting
4.1 Identifying operating modes and resetting faults
Two type of fault are distinguished:
• Burner faults and
• Control and heating system faults
If there is a burner fault the fault indicator lamp on the burner comes on
(Æ burner documentation). Such faults can generally be reset by
pressing the reset button on the burner.
Controls and heating system faults are indicated on the control unit
display if it has one. More detailed information can be found in the
controls' documentation.
CAUTION: Risk of system damage from freezing.
The heating system can freeze up in cold weather if
it has been switched off or disabled by a fault
shutdown.
B Rectify the fault immediately and restart the
heating system.
B If that is not possible, protect the heating system
against freezing by draining it at the lowest point.
Canadian installations of this boiler are required to be
equipped with a blocked vent switch (WMO) that
interrupts the burner in case of an obstructed flue gas
pipe. Call your boiler service technician if you suspect
the WMO may have tripped.
Logano G115 WS US/CA – 6 720 804 873 (2012/10) 7
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