Buderus Logano GB125 BE US Installation And Maintenance Instructions Manual Download Page 6

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Product description

Logano GB125 BE US/CA - Subject to technical modifications.

2.4

Product description

This boiler is an oil-fired condensing boiler with
modulating control of boiler water temperature.

The boiler consists of:
• Control panel
• Boiler casing
• Boiler block with thermal insulation
• Burner
• Heat exchanger system

The control panel monitors and controls all electrical
boiler components.

The boiler casing prevents heat loss and reduces noise.

The boiler block transfers the heat generated by the
burner to the boiler water. The insulation prevents energy
loss.

Fig. 1

Boiler with burner

Control panel

Boiler casing

Boiler block with thermal insulation

Burner hood

Burner

Fig. 2

Rear view with heat exchanger (thermal
insulation not shown)

Heat exchanger system

Summary of Contents for Logano GB125 BE US

Page 1: ...nstallation and maintenance manual must be followed precisely If you require assistance or further information con tact a qualified installer or an appropriate service provider CAUTION The operating m...

Page 2: ...hecking for leaks 24 5 6 Connecting the fuel supply 25 5 7 Bleed off condensate 25 5 8 Electrical supply connections 27 5 8 1 Installing the control panel 27 5 8 2 Installing the temperature sensor as...

Page 3: ...angers posed by explosive and combustible materials B Do not use or store easily combustible materials paper lace curtains clothing thinners paints etc near the boiler B Maintain a clearance of 16 inc...

Page 4: ...y Buderus is not covered by the Buderus warranty Instructing the customer B Explain to the customer how the boiler works and how to operate it B Inform the customer that he she must not carry out any...

Page 5: ...boiler is designed for the central heating and indirect heating of domestic hot water e g in a hot water tank for instance in single family homes or multi family buildings 2 2 Standards regulations a...

Page 6: ...tion Burner Heat exchanger system The control panel monitors and controls all electrical boiler components The boiler casing prevents heat loss and reduces noise The boiler block transfers the heat ge...

Page 7: ...le boiler water B When using oxygen permeable pipes e g for radiant floor heating systems you must separate the system using heat exchangers Unsuitable heating system water promotes sludge formation a...

Page 8: ...UE 91 2 91 1 91 0 Flue gas temperature 176 140 F F C 176 80 176 80 192 89 Boiler water content gal l 8 7 35 6 11 8 44 9 11 8 44 9 Gas volume of combustion chamber and heat exchanger cu ft l 1 5 42 9 2...

Page 9: ...stated conditions may cause irreversible damage to individual components of the boiler B The information on the rating plate is definitive Operating conditions Min boiler water tempera ture Operating...

Page 10: ...lations A minimum clearance of 16 is required Never store flammable materials or liq uids in the vicinity of the boiler Flooding In case of an acute risk of flooding disconnect the boiler in time from...

Page 11: ...chnical modifications 11 2 10 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 environm...

Page 12: ...r door unplug the burner plug from the burner controller Fig 4 Removing burner hood B Unscrew two hex bolts at the sides B Open the boiler door B Lift the burner door off its hinges Fig 5 Removing the...

Page 13: ...7 Moving the boiler with a boiler hand truck The boiler is secured to the pallet by 2 screws for transportation purposes WARNING Risk of injury from carrying heavy loads B Always lift and move the eq...

Page 14: ...system damage due to freezing B Install the heating system in a frost free room Dimen sion Wall clearance A Recommended 40 Minimum 27 B Recommended 27 Minimum 16 C Recommended 28 Minimum 20 D Recomme...

Page 15: ...ments 1 Hex bolts 2 Hinges B Unscrew the hex bolts 1 and remove the hinge barrels 2 B Fix the hinge barrels 2 on the left hand side of the burner door 3 using the hex bolts B Hang the burner door 3 by...

Page 16: ...ce a wooden batten underneath to jack it up B Screw in adjustable feet 2 1 8 B Gently set the boiler down Fig 11 Fitting the adjustable feet burner not shown 1 Angle bracket 2 Adjustable feet 4 4 Posi...

Page 17: ...to a wood stove B Follow the instructions of the flue pipe manufacturer The boiler must be installed by a trained and certified installer in accordance with all requirements of NFPA 31 Installation o...

Page 18: ...ngs and combustion air temperature readings are taken exclusively at the dedicated testing ports Follow the directions in the instructions for the Logatop BE oil burner Fig 13 Installing the flue air...

Page 19: ...tflow of the flue gases 6 The termination must never be located within 3 ft of inside corners of buildings and never less than 2 ft from outside corners of buildings 7 If there is a fan assisted air i...

Page 20: ...O Concentric supply air and flue gas routing via roof Vertical concentric supply air and flue gas routing III or GA K Concentric air flue gas routing through a flue inside a duct Flue pipe inside an e...

Page 21: ...Plastic flue system DN 80 125 Boiler capacity I or HT K Concentric air sup ply and flue pipe exit ing through external wall II or DO Concentric supply air and flue gas rout ing via roof III or GA K Co...

Page 22: ...converter B Seal 90 1 1 4 NPT elbow on double nipple B Mount conversion nipple on the elbow and align as desired Fig 16 B Seal 90 elbow safety valve and pressure temperature gauge Fig 16 B kit Install...

Page 23: ...ty valve 2 Pressure temperature gauge 3 Ball valve drain 4 Air eliminator in main supply 5 Heating pump 6 Check valve back flow preventer 7 Diaphragm expansion vessel 8 Automatic feed valve 9 Check va...

Page 24: ...mperature gauge CAUTION Risk of system damage due to excess pressure when testing for leaks Pressure control and safety equipment may be damaged through excessive pressure B When you carry out a leaka...

Page 25: ...as a drill template and drill 4 holes in the jacket panel B Secure the mounting bracket 7 to boiler side panel B For a 3 8 oil line install a 3 8 flare x 3 8 NPT adapter 1 in the inlet and a 1 4 x 3...

Page 26: ...odors Installing and filling the siphon and neutralizer B Install the nut on the boiler condensate drain Fig 22 1 B Install the o ring on the boiler condensate drain pipe B Merge the siphon with the...

Page 27: ...ontrol panel in the slots 3 B Slide the control panel forward towards the burner door B Snap the flexible catches 1 into place in the knock outs provided 4 Fig 24 Installing the control panel 1 Flexib...

Page 28: ...nsor well 3 B Roll up surplus capillary tube and sensor lead length and place on top of the thermal insulation B Feed the burner cable 4 through the cable entry in the front boiler top panel 1 to the...

Page 29: ...with the wiring diagram Chapter 12 page 61 B Remove blind connector from Abgas berwachung Fig 28 B Insert flue gas manual reset high limit STB connectors in socket labeled Abgas berwachung as shown i...

Page 30: ...ble from the top into the slots in the frame step 1 B Slide the cable clips downward step 2 B Push against the clips step 3 B Flip the lever up step 4 Fig 30 Securing cables with cable clips 5 9 Insta...

Page 31: ...e pressure depending on safety valve installed B Bleed the heating system while filling Fig 32 Pressure temperature gauge for showing operating pressure and supply temperature WARNING Risk of boiler d...

Page 32: ...emoving the two hex bolts at the sides B Slightly withdraw the heat exchanger baffles 1 from the heat exchanger B Adjust the heat exchanger baffles 1 to a horizontal position and push them back into t...

Page 33: ...off the sealant rope We recommend rechecking the burner after a few weeks of operation Required instruments CO2 measuring equipment Meter to measure draught Oil pressure gauge 0 350 psi 25 bar Flue ga...

Page 34: ...e starting the fault must be removed and the system must have fallen back below the limit B Check the function of the manual reset high limit service instructions for the control panel 6 8 Installing...

Page 35: ...ure expansion vessel documentation 31 ____________ psi 4 Check combustion air supply and flue system 5 Check position of heat exchanger baffles 32 6 Switch on the control panel control panel documenta...

Page 36: ...fatal injury Your own safety must always take the highest priority B Turn off the main isolating fuel valve B Disconnect the heating system from the electrical power supply by means of the emergency...

Page 37: ...by a qualified service technician If parts are replaced only Buderus approved components may be used Maintenance must be carried out once a year The results of the inspection must be recorded in the...

Page 38: ...ve the heat exchanger baffles 1 from the heat exchanger B Clean the heat exchanger baffles 1 with one of the two cleaning brushes Fig 39 Opening the burner door 1 Flue gas baffles in the heat exchange...

Page 39: ...heating system for operation 8 3 2 Wet cleaning chemical cleaning When wet cleaning use a Buderus approved cleaning agent appropriate for the degree of soiling soot or scale Follow the same sequence...

Page 40: ...stem 1 Rear boiler cover 2 Thermal insulation B Undo the quick release catches 1 for the cleaning access cover 2 B Remove the cleaning access cover 2 and gasket from the heat exchanger system Fig 43 O...

Page 41: ...ning brushes suitable for the heat exchanger system Avoid damaging the flue gas temperature sensor DANGER Risk of fatal injury from escaping flue gases B When reinstalling the cleaning access cover ta...

Page 42: ...r 8 4 page 40 Fig 45 Cleaning the neutralizing system 1 Siphon 2 Connector on condensate pan WARNING Risk to life through escaping flue gases Flue gas can escape into the building through a dry siphon...

Page 43: ...idues and flush B Reinstall the bottom cap 7 with gasket 6 Version A B Screw siphon Fig 46 1 onto connector of condensate pan Fig 46 2 B Reattach the condensate hoses B Fill with water via the open co...

Page 44: ...perating pressure B If the pressure gauge shows less than 15 psi the operating pressure is too low Add water to the system Fig 49 Pressure temperature gauge for showing operating pressure and supply t...

Page 45: ...pressure it must be replaced because otherwise system components may be damaged by excessive operating pressure 8 9 Concentric supply air and flue gas routing B Check combustion air supply and flue ga...

Page 46: ...6 5 Check heat exchanger system for Dirt contamination Damaged or hardened gaskets 40 6 Check burner burner documentation 7 Check combustion air supply and flue system for Function and safety Leaks Bl...

Page 47: ...____ 1 2 3 4 5 6 7 8 9 10 11 12 Company stamp signa ture Company stamp signa ture Company stamp signa ture Company stamp signa ture Company stamp signa ture Company stamp signa ture Company stamp sign...

Page 48: ...ts if necessary 38 6 Combustion air supply and flue system Clean air supply system In the case of concentric combustion air supply and flue pipe clean the condensate outlet 38 7 Start up the heating s...

Page 49: ...ner 1 Fig 50 Resetting the burner 1 Reset button CAUTION Risk of system damage from pressing the reset button too frequently Too many resets can damage the burner s ignition transformer B Do not press...

Page 50: ...of abbreviations Fig 51 Multiple zones with zone valves 1 Radiators KR Return valve or check valve SH Heating zone adjuster mixing valve DEV Diaphragm expansion vessel SV Safety valve air eliminator...

Page 51: ...125 BE US CA Subject to technical modifications 51 Fig 52 Multiple heating circuits with heating pumps 1 Radiators Fig 53 Multiple heating zones with bypass for heating systems with large water capaci...

Page 52: ...10 Examples of installations Logano GB125 BE US CA Subject to technical modifications 52 Fig 54 Multiple heating circuits with heating pumps and motorized mixing valve 1 Radiators DEV...

Page 53: ...G 1 05317712 7 Threaded rod M10x205 7747007599 8 Reducing nipple 3869828 9 Sensor well R3 4 x100mm 5446065 10 Tie rod set M8x310mm 05127574 10 Tie rod set M8x440mm 05127578 11 Heat exchanger baffle 3...

Page 54: ...l for boiler block G115 125 WS 63031288 25 O ring 44x3 set 5 pieces 7747031427 26 Pressure testing nozzle M6 SW 10 V2 63032101 99 B Kit G115 G125 WS 63029762 Item no Description Part number GB125 22 B...

Page 55: ...al modifications 55 Fig 55 Boiler block and burner door 7747102254 ab RS Kesselblock und Brennert r GB125 US 6 5 6 5 2 24 24 14 14 4 7 7 3 2 24 24 24 24 16 24 22 24 16 15 20 18 17 19 26 20 21 3 24 24...

Page 56: ...lation pack of 10 7747016084 12 Front top panel assy GB125 63029948 13 Hood rear compl GB125 3 sections 63029950 13 Hood rear compl GB125 4 sections 63029951 16 Rear panel insulation GB125 7747012557...

Page 57: ...A Subject to technical modifications 57 Fig 56 Boiler casing 0 1 2 3 4 6 5 A A 7747102255 ac RS Verkleidung GB125 US 13 12 31 25 24 29 28 29 31 8 16 30 11 31 7 31 31 32 19 31 31 31 2 1 3 31 31 5 7 31...

Page 58: ...7747007464 9 Return pipe HK WT G1 G1 V2 7747030543 9 Return pipe HK WT G11 4 V2 87185710540 10 Return pipe RK WT G1 G1 V2 7747030541 10 Return pipe RK WT G11 4 V2 87185710530 11 Gasket D24x30 5 774701...

Page 59: ...itability depends on flue system 7747016312 31 Flue gas distributor gasket 87185702200 8718579535 32 Spacer sleeve 17 2x2 1x68 87185702230 33 Spring clip d 32 6 22 7747030542 33 Spring clip d 38 2 28...

Page 60: ...parts Logano GB125 BE US CA Subject to technical modifications 60 Fig 57 Heat exchanger 6 720 649 309 12 1ITL 27 28 29 5 23 32 32 26 15 9 11 11 25 10 25 31 26 24 4 6 4 1 3 8 16 18 34 33 17 30 22 21 2...

Page 61: ...12 Wiring diagrams Logano GB125 BE US CA Subject to technical modifications 61 12 Wiring diagrams Fig 58 Wiring diagram...

Page 62: ...panels 30 Installing strain relief 30 Installing the burner door jacket 30 Installing the control panel 27 Installing the temperature sensor assembly 28 L Line voltage 10 Log commissioning 35 Logs ins...

Page 63: ...Logano GB125 BE US CA Subject to technical modifications 63 Notes...

Page 64: ...Tel 603 552 1100 Fax 603 584 1681 www buderus us U S A Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30 32 D 35576 Wetzlar www buderus com Bosch Thermotechnology Corp reserves the...

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