Buderus Logano GB125/22 BE Guía rápida

For trained and certified

installers

Please read carefully prior

to installation, maintenance

and service

CAUTION!

Observe the safety instructions of this installation

and maintenance manual before placing the boiler

in operation.

DANGER!

Installation, adjustment, modification, operation or

maintenance of the heating system carried out by

an unqualified person may result in danger to life

and limb or property damage.

The directions of this installation and maintenance

manual must be followed precisely.

Contact a trained and certified service company or

service provider if support or additional information

is required.

CAUTION!

The operating manual is a component of the techni-

cal documentation and must be handed over to the

operator of the heating system.

Discuss the instruction in this manual with the ow-

ner or operator of the heating system to ensure that

they are familiar with all information required for

operation of the heating system.

Installation and Service

Instructions

Low Emissions and

High Efficiency

Condensing Oil Boiler

Logano GB125 BE US/CA

6 720 615 063 - 05/2009 US/CA

Contents

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.2

Contents

1 Safety instructions and explanation of

symbols 3

1.1 Safety instructions 3

1.2 Explanation of symbols 4

1.3 Standards, regulations and code compliance 5

1.4 Notes on installation and operation 5

1.4.1 Other important information 5

2 Product description 6

2.1 Intended use 6

2.2 Product details 7

2.3 Heating system water quality 8

2.4 Tools, materials and accessories 8

2.5 Package Contents 9

2.6 Dimensions and specifications 10

2.6.1 Logano GB125 BE dimensions 10

2.7 Conditions for operation 11

2.7.1 General operating conditions 11

2.7.2 Boiler room and ambient conditions 12

2.7.3 Fuel conditions 12

2.7.4 Power supply conditions 12

2.7.5 Hydraulic conditions and water quality 12

2.8 Disposal 13

3Movingtheboiler 14

3.1 Reducing the boiler weight for handling

purposes 14

3.2 Lifting and carrying the boiler 15

3.3 Moving the boiler with hand truck 15

4 Placing the boiler 16

4.1 Wall clearances 16

4.2 Reversing the burner door 17

4.3 Mounting the adjustable feet

(included with B-kit) 18

4.4 Positioning and leveling the boiler 18

5 Boiler installation 19

5.1 Flue pipe installation 19

5.2 Test ports 20

5.3 Installation options 22

5.4 Installation of Water Connections 24

5.4.1 Installing B-Kit 24

5.4.2 Installation of boiler drain (included in B-Kit) 25

5.4.3 Installation of system components 25

5.5 Filling heating system and checking

for water leaks 26

5.6 Connecting the fuel supply 27

5.7 Condensate trap 28

5.8 Electrical connections 29

5.8.1 Logamatic control installation 29

5.8.2 Fitting the temperature sensor assembly 30

5.8.3 Power connection and connections of

additional components 31

5.8.4 Fitting cable strain relief 32

5.9 Install the back boiler cover 32

6 Placing the heating system in operation 33

6.1 Bringing the system up to operating pressure 33

6.2 Testing relief valve 34

6.3 Checking position of heat exchanger baffles 34

6.4 Preparing the heating system for operation 34

6.5 Starting up the control and the burner 34

6.6 Taking measurements 35

6.7 Checking the manual reset high limit (STB) 36

6.8 Replacing the burner hood 36

6.9 Commissioning log 37

7 Shutting down the heating system 38

7.1 Normal shut-down 38

7.2 Shutting down the heating system in an

emergency 38

7.2.1 Action in an emergency 38

8 Heating system servicing 39

8.1 Why is regular servicing important? 39

8.2 Preparing the boiler for servicing 39

8.3 Cleaning the boiler 40

8.3.1 Cleaning the boiler with cleaning brushes 40

8.3.2 Wet cleaning (chemical cleaning) 41

8.4 Cleaning the heat exchanger system 42

8.5 Cleaning the neutralizer unit and trap 44

8.6 Checking the air supply hose 45

8.7 Check heating system operating pressure 45

8.8 Testing relief valve 46

8.9 Concentric combustion air supply and

flue pipe 46

8.10 Air supply system 46

8.11 Inspection and maintenance reports 47

9 Troubleshooting 50

10 Examples of installations 51

11 Spare parts 53

12 Wiring diagrams 62

Index 63

Safety instructions and explanation of symbols

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. 3

1 Safety instructions and explanation of symbols

1.1 Safety instructions

If you smell flue gas

VSwitch off the boiler (Æpage 38).

VOpen windows and doors.

VInform an authorized heating contractor.

Risk of poisoning. Insufficient ventilation may

cause dangerous flue gas leaks.

VNever close off or reduce the size of air inlet or outlet

vents.

The boiler must not be operated until the obstruction

has been removed.

VEnsure that no mechanical air-extraction equipment

draws air from the boiler room, e.g. kitchen vent hood,

clothes dryer, central vacuum system, etc.

VInform the system operator in writing of an existing

problem and associated danger.

Danger from escaping flue gases

VMake sure that the flue pipes and seals are not dam-

aged.

VUse silicone as sealing compound.

VNever install a barometric nor a thermally controlled

vent damper with this boiler.

VConnect only one boiler to each flue system or chimney

flue.

VThe flue system piping must not feed into another air

extraction duct.

VDo not route the flue system piping through or inside

another duct, used for exhausting air or other flue

gases.

VThe condensate trap must be primed at all times. Fail-

ure to do so will allow combustion gases to escape into

boiler room.

Dangers posed by explosive and combustible

materials

VDo not use or store combustible materials (paper, lace

curtains, clothing, thinners, paints, etc.) near the boiler.

VMaintain a clearance of 16 inches from the boiler.

Combustion air

VKeep the supply of air for combustion free of corrosive

substances (e.g. halogenated hydrocarbons that con-

tain chlorine or fluorine compounds). In that way you

will prevent corrosion.

Danger from electrical shock

VBefore opening the boiler:

Disconnect the heating system from the electrical

power supply by means of the emergency shutoff

switch or the heating system circuit breaker on the

main fuse panel.

VIt is not sufficient just to switch off the control.

VTake measures to ensure the heating system can not

be switched on again unintentionally.

Installation

VCorrect and proper installation and adjustment of the

burner and the controls are the fundamental require-

ments for safe and economic operation of the boiler.

VThe boiler may only be installed and maintained by a

trained and certified heating contractor.

VDo not modify any parts that carry flue gases.

VOnly qualified electricians are permitted to carry out

electrical work. Follow applicable code.

VThe hot water tank may only be used for heating

domestic hot water.

VNever shut off safety relief valves! Water may

escape from the safety relief valve when the water is

being heated.

DANGER TO LIFE

by failure to consider your own safety in an

emergency such as a fire.

VNever put yourself at risk of fatal injury.

Your own safety must always take the

highest priority.

1Safety instructions and explanation of symbols

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.4

Maintenance and service

Heating systems should be regularly maintained for the

following reasons:

– to achieve 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 possible combustion.

VRecommendation for users: sign a maintenance

and servicing contract with a trained and certified heat-

ing contractor covering annual servicing and condition-

based maintenance.

VServicing and repairs should only be carried out by a

trained and certified heating contractor.

VHave any faults immediately corrected in order to pre-

vent damage to the system.

VUse only genuine spare parts. Damage caused by the

use of parts not supplied by Buderus is not covered by

the Buderus warranty.

Instructing the customer

VExplain to the customer how the boiler works and how

to operate it.

VInform the customer that he/she must not carry out any

alterations or repairs.

1.2 Explanation of symbols

Signal words are used to indicate the seriousness of the

ensuing risk if measures for minimizing damage 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.

Cross-references to particular places in the document or

to other documents are marked with an arrow Æ.

Warnings are indicated by a warning trian-

gle and a grey background.

Notes are identified in the text by this sym-

bol. They are bounded by horizontal lines

above and below the text.

Safety instructions and explanation of symbols

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. 5

1.3 Standards, regulations and code

compliance

1.4 Notes on installation and operation

When installing and operating the heating system

observe the following:

– The local building codes regarding the installation

– The local building codes regarding combustion air sup-

ply and venting systems, and the chimney connection

– Regulations governing electrical connection to the

mains power supply

– The regulations and standards relating to the safety

systems for the water heating system

1.4.1 Other important information

– Only operate the boiler with the concentric air/venting

system specifically designed and approved for it.

– Follow the local code when connecting the conden-

sate outlet to the public sewer system.

It is the installers responsibility to ensure the

installation and operation of this heating sys-

tem meets all applicable federal, state, and

local codes.

The boiler must be installed by a qualified in-

staller and in accordance with all require-

ments of NFPA-31, "Installation of Oil-

Burning Equipment". Installation must com-

ply with all local and national legal require-

ments and the regulations of all institutions

having legislative authority with regard to the

installation of oil-fired boilers.

2Product description

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.6

2 Product description

This installation and maintenance manual contains impor-

tant information for the safe and correct installation, initial

start-up and maintenance of this boiler.

The Logano GB125 BE oil-fired condensing boiler is gen-

erally referred to below simply as the boiler.

These installation and servicing instructions are intended

for trained and certified heating contractors, who – as a

result of their technical training and experience – are

skilled in dealing with heating systems and DHW installa-

tions.

This boiler must be installed with one of the Buderus sup-

plied concentric heating systems.

– Concentric direct vent side wall kit

– Concentric vertical kit

– Concentric masonry chimney kit

This boiler produces significant amounts of acidic flue gas

condensate while in operation. Condensate may cause

damage to sewer pipes and septic systems, and disposal

may be subject to local regulations. In the absence of

such regulations Buderus recommends a condensate

neutralization kit.

The boiler must draw all combustion air from the outside.

2.1 Intended use

The boiler is designed for heating central heating system

water and indirect heating of domestic hot water (e.g. in a

hot water tank), for instance in single family homes or multi

family buildings.

Product description

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. 7

2.2 Product details

This boiler is an oil-fired, fan-assisted condensing boiler

with modulating control of boiler water temperature.

The boiler consists of:

– Control panel

– Boiler jacket

– Boiler heat exchanger with insulation

–Burner

– Heat exchanger system

The controls monitor and control all electrical boiler com-

ponents.

The boiler jacket prevents heat loss and acts as a noise

insulator.

The boiler heat exchanger transfers the heat generated by

the burner to the heating water. The insulation prevents

energy loss.

Fig. 1 Boiler with burner

1Control panel - Logamatic

2Boiler jacket

3Boiler heat exchanger with insulation

4Burner hood

5Burner

Fig. 2 Rear view with heat exchanger (thermal insula-

tion not shown)

1Secondary condensing heat exchanger system

2Product description

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.8

2.3 Heating system water quality

Poor water quality can damage heating systems due to

scale formation and corrosion (Tab. 8).

2.4 Tools, materials and accessories

For the installation and maintenance of the boiler, you

need standard tools used for central heating and DHW

systems, plus metric wrenches and metric Allen

wrenches.

The following may also prove useful:

– Hand truck with securing strap or Buderus boiler cart

– Wood battens

– Cleaning brushes and/or chemical cleaning agent for

wet cleaning

Caution: Risk of system damage due to un-

suitable heating system water.

VIf oxygen-permeable pipes are used, e.g.

for radiant heating systems, the systems

must be separated from the boiler by a

heat exchanger. Unsuitable heating sys-

tem water promotes sludge formation and

corrosion. This can result in heat exchang-

er malfunction and damage.

Product description

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice. 9

2.5 Package Contents

VUpon delivery, check that the packaging is undam-

aged.

VCheck the delivery for completeness.

Component Qty Packaging

Boiler heat exchanger 1 1 pallet

Boiler casing, factory-fit-

ted to boiler heat

exchanger

Burner hood, factory-fitted

to boiler heat exchanger

Heat exchanger system

Oil burner with factory-fit-

ted burner door

Air supply hose, factory-fit-

ted

Condensate trap 1 1 bag1)

1) Under the burner hood

B-kit components:

– Conversion nipple

(1¼" NPT)

– 30 psi relief valve

– Boiler drain (¾")

– Pressure/temperature

gauge

– Double nipple

(1¼" NPT × R1¼)

– 90°-elbow (1¼” NPT)

– 90°-elbow (¾" NPT)

– Burner mounting studs

and washers

– Adjustable feet

11bag

Logamatic control panel 1 1 box

Tigerloop oil filter and

deaerator

11box

Technical documentation 1 bag

Tab. 1 Package Contents

2Product description

Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.10

2.6 Dimensions and specifications

2.6.1 Logano GB125 BE dimensions

Fig. 3 Connections and dimensions (measurements in inches)

VK = Boiler supply

RK = Boiler return

EL = Boiler drain (connection for drain valve)

Dimensions and connections:

Boiler model Unit GB125/22 BE GB125/30 BE GB125/35 BE

Boiler sections 344

Rated heat output (gross output)

131/86 °F

MBtu/hr 76 102 124

Rated heat output (net IBR rating)

131/86 °F

MBtu/hr 67 90 109

Rated heat output (gross output)

176/140 °F

MBtu/hr 75 100 121

Rated heat output (net IBR rating)

176/140 °F

MBtu/hr 65 87 105

Burner input MBtu/hr 81 108 131

AFUE %91.2 91.1 91.0

Flue gas temperature 176/140 °F °F 176 176 192

Boiler water content gal 8.7 11.8 11.8

Gas volume of combustion chamber and heat

exchanger

cu.ft. 1.5 2.0 2.0

Oil firing rate gph 0.60 0.75 0.95

Flue gas back-pressure in. W.C. 0.08" - 0.14" W.C.

Heat exchanger water pressure loss

(DeltaT = 18 °F)

ft. of

head

1.8' 2.0' 2.7'

Maximum supply temperature1)

1) Safety manual reset high limit (safety temperature limiter, STB)

Maximum permitted supply temperature = Safety limit (STB) – 32 °F

Example: Safety limit (STB) = 212 °F, maximum possible flow temperature = 212 - 32 = 180 °F

The safety limit must meet the national regulations of the country concerned.

°F 212

Maximum operating pressure psi 44

Maximum time constant of thermostat and

high limit safety cut-out (STB)

s40

Tab. 2 Specifications

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