Buderus Logano G115 WS US/CA User manual

C
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 flamma-
ble liquids or vapors in the vicinity of this system or
any other heating system.
Operating Instructions Low-temperature
oil boiler
Logano G115 WS US/CA
6 720 804 873-00.1T
6 720 804 873 (2012/10) EN-US

Contents
Logano G115 WS US/CA – 6 720 804 873 (2012/10)2
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

1
General safety instructions and explanation of symbols
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1 General safety instructions and explanation of symbols
1.1 Explanation of symbols
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 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
BSwitch off the boiler (Æpage 6).
BOpen windows and doors.
BInform an authorized heating contractor.
Installation
BCorrect and proper installation and adjustment of the burner and the
controls are the fundamental requirements for safe and economical
operation of the boiler.
BThe boiler may only be installed or converted by an approved heating
contractor.
BDo not modify any parts that carry flue gas.
BThe hot water tank may only be used for heating domestic hot water.
BNever 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.
Bsign a maintenance and servicing contract with an approved heating
contractor covering annual servicing and maintenance.
BThe flue system must be inspected once a year. Have all parts that
show any signs of damage from corrosion or other causes replaced.
BThe 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:
BServicing and repairs may only be carried out by a trained heating
contractor.
BHave any faults immediately corrected in order to prevent damage to
the system.
BThe operator is responsible for the general and environmental safety
of the heating system.
BUse 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
BNever put yourself at risk. Your own safety must always take the
highest priority.
Dangers posed by explosive and flammable materials
BAny work on components that carry oil may only be carried out by a
certified heating contractor.
BDo not use or store flammable (paper, thinners, paints, etc.) near the
boiler.
BMaintain a clearance of at least 16 inches from the boiler.
Risk of poisoning. Insufficient ventilation may cause dangerous flue
gas leaks.
BNever close off or reduce the size of air inlet or outlet vents.
BThe boiler must not be operated until the obstruction has been
removed.
Risk of water damage
BDo not use the appliance if any part of it has been under water.
BCall in a qualified customer service technician immediately to check
the appliance and replace any controls that have been under water.
Combustion air
BKeep 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
BThe operator must read the information on how the boiler works and
have the heating system installer explain how to operate it.
Warnings are indicated by a warning triangle and a grey
background.
Notes are identified in the text by this symbol. They are
separated by horizontal lines above and below the text.

2Product description
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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
BDispose of boiler packaging in an environmentally responsible
manner.
BAll 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 (ÆFig. 1) is a low-temperature oil-fired appliance.
The main components of the boiler (ÆFig. 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.
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
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3
Commissioning the heating system
Logano G115 WS US/CA – 6 720 804 873 (2012/10) 5
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.
BWith new heating systems, check the operating pressure daily at first,
topping up the boiler water and bleeding the system and radiators (if
so equipped).
BLater 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.
BRead the current operating pressure (psi) and temperature (°F) from
the temperature/pressure gauge.
BIf 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.
Fig. 2 Pressure/temperature gauge
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.
BIf there the fill valve is not hard piped to the water supply, you will
need to connect a hose.
BFill the heating system by slowly opening the fill valve. Observe the
pressure gauge (pressure/temperature gauge) while doing so.
BClose the boiler fill valve once the required operating pressure has
been reached.
BBleed the system via the air vent and the radiator bleed valves (if so
equipped).
BTop up with additional water if the pressure drops as a result of
bleeding the system.
7 747 010 720-24.2RS
CAUTION: Health risk from contaminated domestic
water.
BIt 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.
BOnly fill the heating system when cold (the flow
temperature should be no more than 100 °F).
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.
BAsk your heating contractor if the local water can be
used untreated or whether it needs to be treated.
BNotify your heating contractor if you find you need to
top up your heating system frequently, as there may
be a leak.
Operating pressure
Design operating pressure
(optimum setting) _____________ psi
Maximum heating system operating
pressure
(standard = 30 psi) _____________ psi
Table 1 Operating pressure (entered by system installer)

3Commissioning the heating system
Logano G115 WS US/CA – 6 720 804 873 (2012/10)6
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.
BSet the boiler temperature control to "AUT" (Automatic mode). In that
setting, the controls operates the boiler.
BSet the ON/OFF switch to position "I" (ON).
Fig. 3 Switching on the controls
(e.g. Logamatic 2000 )
Starting up the system using the Aquasmart control
BSwitch on emergency shut-off switch ("ON" position). This turns on
the heating system.
Fig. 4 Switching the heating system on/off using the emergency shut-
off switch (without Buderus controls)
3.4 Turning the heating system off
With Buderus controls (ÆFig. 3, page 6)
BSwitch 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 (ÆFig. 4, page 6)
BSwitch off the emergency shut-off switch ("OFF" position). This
switches off the boiler and all its components.
Completing final operations
BShut off fuel supply by closing main valve.
3.5 Action in an emergency
In the event of an emergency, e. g. a fire, proceed as follows:
BNever put yourself at risk of fatal injury. Your own safety must always
take the highest priority.
BShut off fuel supply by closing main valve.
BIsolate 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
The right fuel
To ensure it operates properly, the heating system requires fuel of the
correct type and grade.
Information on operating the system, e.g. setting the
temperatures, can be found in the controls'
documentation.
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7 747 019 141-28.1RS
7 747 019 141-35.1RS
CAUTION: Risk of system damage from freezing.
If the heating system has been switched off, it may
freeze up.
BLeave the heating system permanentlyswitched on as
much as possible.
BProtect your heating system against freezing by
draining the heating system and hot water pipes at the
lowest point.
Use the heating system emergency shutoff switch
located outside the boiler room or the heating system
circuit-breaker for emergency shutdown.
CAUTION: Risk of system damage from use of incorrect
fuel.
BOnly 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)

4
Troubleshooting
Logano G115 WS US/CA – 6 720 804 873 (2012/10) 7
Information on the boiler room
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.
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
(Æburner 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.
Fig. 5 Resetting the burner
[1] Burner
Correcting burner faults
BPress reset button on burner.
CAUTION: Risk of boiler damage from contaminated
combustion air.
BKeep the combustion air free of corrosive substances
(e.g. halogenated hydrocarbons that contain chlorine
or fluorine compounds).
BPrevent heavy accumulation of dust.
CAUTION: Risk of system damage from water.
BIn 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.
BAfter the flood has subsided, ask your installer to
check the heating system before starting it up again.
BAll parts that have been in contact with flood water
must be replaced by a qualified heating contractor.
CAUTION: Risk of system damage due to lack of or
inadequate cleaning and maintenance.
BHave your heating system inspected, cleaned and
maintained by a heating contractor once a year.
BWe recommend you sign a contract covering an
annual inspection and maintenance on an as-required
basis.
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.
BDo 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.
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.
BRectify the fault immediately and restart the
heating system.
BIf 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.
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6 720 615 225-04.1RS