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Product Description

Logano G234X – 6 720 811 233 (2017/02)

5

2.3

Notes on installation and operation

When installing and operating the heating system, observe and comply 
with the following:

• The local building codes regarding the installation.
• The local building regulations regarding air supply and venting 

systems and the chimney flue connection.

• Regulations governing power connection to the power supply.
• The technical regulations of the gas utility company regarding the 

connection of the gas burner to the local main gas supply.

• The regulations and standards relating to the safety systems for hot-

water heating systems.

2.3.1

Other important information

• The installation of a boiler must be notified to and approved by the 

relevant gas supply company.

• Operate the boiler only with the balanced flue system (LAS) 

specifically designed and approved for this boiler type.

• Regional approvals for the flue gas system may be required.

2.4

Tools, materials and equipment

For the installation and maintenance of the boiler, you will need the 
standard tools used for central heating, gas and water systems plus a set 
of metric wrenches and Allen wrenches.

The following assembly aids will also be useful:
• Pipes for transport
• Wood battens
• Cleaning brushes and/or chemical cleaning agent for wet cleaning

2.5

Disposal

▶ Dispose of the boiler packaging material in an environmentally 

responsible fashion.

▶ Dispose of any components of the heating system that require 

replacement in an environmentally responsible fashion at an 
approved landfill.

Notice regarding environmental protection and disposal 

 Section 8, 

page 24.

2.6

Product Description

The boiler is a low-temperature gas boiler with an atmospheric gas 
burner.

The boiler consists of the following main components (

 Fig. 1):

• Ignition module and adjustable boiler temperature controller
• Boiler casing and front cover
• Boiler block with insulation
• Burners

The ignition module and adjustable boiler temperature controller 
monitor and control all electrical and operational components of the 
boiler.

The boiler casing prevents energy loss and acts as soundproofing. 

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

Fig. 1  

Main components G234X

[1]

AquaSmart

TM

 

[2]

Ignition control

[3]

Boiler block with insulation

[4]

Boiler jacket

[5]

Burners

[6]

Front cover of boiler 

2.7

Scope of delivery

▶ Check packaging upon receipt of delivery for damage.
▶ Check delivery for completeness.

The boiler is supplied in one packing unit with the mounted boiler casing, 
gas burner and gas valve, and technical documentation.

The following accessories are optionally available from Buderus:

• CH Pump 
• Cleaning brush

The boiler is fully functional with the factory-installed 
AquaSmart

TM

.

Component

Qty.

Packaging method

Boiler 1

Pallets/box

• 90 °-elbow (¾ " NPT)
• Safety valve
• Drain valve (¾ ")

1

Box

Vent damper

1

Box

Technical documentation

1

Foil package

Table 2   Scope of delivery

6

1

2

3

5

4

6 720 806 028-01.1T

Содержание G234X/38

Страница 1: ...em is carried out by an unqualified person this may result in a fatal injury or property damage Follow the instructions in this installation and maintenance manual exactly If you require assistance or...

Страница 2: ...ting the flue connector 14 5 7 1 Check openings for combustion air supply and venting 14 5 7 2 Requirements for connection to chimneys or flue gas systems 15 5 7 3 Installing the flue pipe 16 5 7 4 Co...

Страница 3: ...is not be fitted with a barometric damper or a thermally controlled vent damper downstream of the flue connector Do not tamper with remove or attempt to repair the flue gas shutoff switch When replac...

Страница 4: ...ns or repairs 2 Product Description This installation and maintenance manual contains important information for the safe and correct installation initial commissioning and maintenance of this boiler T...

Страница 5: ...fashion Dispose of any components of the heating system that require replacement in an environmentally responsible fashion at an approved landfill Notice regarding environmental protection and dispos...

Страница 6: ...0 11 16 25 10 16 2 10 16 38 7 16 729 465 137 147 348 650 66 1034 975 6 720 806 028 02 1T Boiler size Unit 38 5 45 5 55 6 64 7 Ignition heat load MBTU hr 160 187 228 266 kW 46 9 54 8 66 8 78 0 Nominal...

Страница 7: ...r of injectors Main gas orifice identification Rated orifice pressure for natural gas 0 8500 ft 0 2591 m In W C mbar 38 3 3 70 3 0 7 6 45 3 3 70 4 1 10 4 55 4 3 50 4 6 11 5 64 4 3 80 4 4 10 9 Table 4...

Страница 8: ...boiler and roll it on additional pipes to the installation location Fig 5 Place the boiler in its final position Fig 5 Transporting the boiler on rollers NOTICE Risk of system damage from impact shoc...

Страница 9: ...l the boiler both horizontally and vertically using a spirit level Insert metal shims underneath if necessary Fig 7 Leveling the boiler example DANGER Danger posed by explosive and combustible materia...

Страница 10: ...e right side NOTICE Risk of boiler damage due to moisture Protect the individual components of the control system and the ignition system from damp dripping water water spray rain during installation...

Страница 11: ...le regulations Mount an ON OFF switch near the boiler Fig 10 Main power switch by customer DANGER Risk of fire from flammable materials Maintainaclearanceof2inches 51 mm frompipes carrying hot water a...

Страница 12: ...l code We recommend installing a manual shutoff valve in the main gas pipe to the boiler The gas pipes must be fastened outside the boiler The gas supply pipe is designed for a gas connection on the r...

Страница 13: ...ersionkitsforconvertingtheboilerfromnaturalgas to propane gas can be obtained from Bosch Do not attempt to convert the appliance without the approved Buderus parts and the relevant technical documenta...

Страница 14: ...building codes In Canada the regulations in accordance with CAN CSA B 149 1 and 2 Installation Codes apply NOTICE System damage due to faulty safety valve Do not install the safety valve until the lea...

Страница 15: ...the outside through vertical ventilation ducts each opening must have a minimum cross section of one square inch per 2000 Btu h 1100 mm2 kW of the total burner output of all gas fired appliances insi...

Страница 16: ...oles provided in the vent damper 1 Fasten vent damper to the flue connector adapter with three 3 corrosion resistant sheet metal screws A Seal all unused openings of the common flue gas system B Perfo...

Страница 17: ...s are permitted to carry out electrical work Beforeopeningtheappliance Disconnectitfromthe power supply via the ON OFF switch or the appropriate building fuse Take measures to ensure that the heating...

Страница 18: ...lose the gas shutoff valve seal the leaks and repeat step 6 8 Close the gas shutoff valve Remove the screw plug from the gas supply pressure test point 2 on the gas valve in order to measure the gas s...

Страница 19: ...and subsequent incorrect operation Risk of fire and explosion from failure to observe the startup instructions Read the startup instructions carefully before commissioning DANGER Risk of fatal injury...

Страница 20: ...32 4 mbar Record the measured values in the commissioning report page 23 11 Check nozzle pressure Set the orifice pressure according to Table 11 while the boiler is operating To do so remove the safet...

Страница 21: ...21 Disconnecttheheatingsystemfromthepowersupply Openthegas shutoff valve Switch on the power supply for the appliance A normal operating cycle must follow If the gas valve operates correctly Proceed t...

Страница 22: ...4 Fig 28 Checking temperature control 1 Adjustment keypad 6 6 Shutting off gas supply to boiler Set the room thermostats to the lowest setting Disconnect the heating system from the power supply befor...

Страница 23: ...rifice pressure and adjust if necessary inches W C or mbar Page 20 Meas value _____________________________ Unit _____________________________________ 7 Leak test during operation Check ignition flame...

Страница 24: ...gulations are strictly observed To protect the environment we use the best possible technology and materials taking into account economic points of view Packaging method For the packaging we participa...

Страница 25: ...e boiler for cleaning Shut down the heating system Section 7 1 page 24 Remove front wall of boiler Fig 18 page 18 Turn the gas valve ON OFF knob 1 clockwise to the OFF position Do not use excessive fo...

Страница 26: ...on the studs Fig 32 Removing the burner 1 Retaining nuts 2 Studs with spacers 9 5 2 Cleaning the boiler with brushes mechanical cleaning Remove the boiler casing and thermal insulation check for damag...

Страница 27: ...ning the burner Remove burner Section 9 5 1 Check burner rods for dirt If necessary clean burner as described below Unscrew pilot burner unit Fig 35 1 from burner Disconnect pilot gas line 3 from pilo...

Страница 28: ...any other flammable or corrosive vapors and liquids Complete the maintenance log to confirm that all maintenance work has been carried out page 31 Sign the maintenance log and familiarize the owner w...

Страница 29: ...the If everything is OK replace pilot assembly No Heat requirement ended system switches off flue baffle closes End of troubleshooting Repeat procedure until heating system operates properly On model...

Страница 30: ...n flame Specified thermostat value control reached Main and ignition gas valves close gas burners ex tinguished vent damper if installed closes Ignition burner operation Ignition flame burns automatic...

Страница 31: ...ge 18 ___________ inches W C ___________ inches W C 8 Check for leaks during operation Page 18 9 Check the pilot burner flame Page 20 10 Check the main burner flame Page 21 11 Check the vent damper Pa...

Страница 32: ...Blocked vent switch Intermittent pilot dual valve combination gas control VR8304 Pilot burner Honeywell Main valve Pilot valve green blue white red GND MV MV PV GND PV MV PV MV 24V 24V 4 3 2 1 Ref no...

Страница 33: ...ulator To Pilot Burner Spark Gas valve Main Pilot PV PV MV GND MV S8600H GND PV PV MV MV 24V 24VGND K1 TR High Limit Flame roll out safety shutoff switch K2 B2 L2 N L 24V AWG 18 WIRE 120 VAC Wiring Sc...

Страница 34: ...10 Logano G234X 6 720 811 233 2017 02 34 Notes...

Страница 35: ...10 Logano G234X 6 720 811 233 2017 02 35 Notes...

Страница 36: ......

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