Buderus Logano G115 WS US/CA, Logano G115/3 WS, Logano G115/4 WS, Logano G115/5 WS Installation And Service Instructions Manual

For heating contractors

Please read carefully prior
to installation and servicing.

Caution!

Observe the safety instructions of this installation
and maintenance manual before placing the boiler
in operation.

Danger!

If installation, adjustment, modification, operation or
maintenance of the heating system is carried out by
an unqualified person, this 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 qualified service company or service pro­vider if support or additional information is required.

Caution!

The operating manual is a component of the techni­cal documentation and must be handed over to the
operator of the heating system.
Discuss the content of this manual with the owner
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-temperature
oil boiler

6 720 615 225-00.1RS

Logano G115 WS US/CA

6 720 615 225 - 08/2007 US/CA

Contents

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

2

Contents

1 Safety Considerations and Symbol

Descriptions 3

1.1 Regarding this Manual 3

1.2 Explanation of symbols 3

1.3 Observe the following Symbols 3

1.3.1 Installation Guidelines 4

1.3.2 Boiler Room Guidelines 4

1.4 Tools, Materials and Accessories 4

1.5 Disposal 4

2 Product description 5

2.1 Intended use 5

2.2 Certification and testing mark 5

2.3 Notes on installation and operation 5

2.4 Heating system water quality 5

2.5 Product description 6

2.6 Pack contents 7

2.7 Dimensions Specifications 8

2.7.1 Logano G115 WS dimensions 8

2.8 Conditions for operation 9

2.8.1 General operating conditions 9

2.8.2 Conditions for the boiler room and the
environment 10

2.8.3 Combustion air supply conditions 10

2.8.4 Conditions, Fuel 10

2.8.5 Conditions power supply 11

2.8.6 Conditions for hydraulic system and
water quality 11

3Moving the boiler 12

3.1 Reducing boiler weight for transportation
purposes 12

3.2 Lifting and carrying the boiler 13

3.3 Using transportation aids to transport
the boiler 13

4 Installing the boiler 14

4.1 Wall clearances 14

4.2 Reversing boiler door 15

4.3 Mounting the adjustable feet
(included with B-kit) 16

4.4 Positioning and leveling the boiler 16

5 Installing the boiler 17

5.1 Flue pipe installation 17

5.1.1 Chimney venting 17

5.2 Fitting the water connections 19

5.2.1 Fitting the B-kit 19

5.2.2 Installation of boiler drain (included in B-Kit) 20

5.2.3 Installing system components 20

5.3 Filling the heating system and checking
for leaks 21

5.4 Mounting the burner 23

5.5 Connecting the fuel supply 23

5.6 Installing aquastat 24

5.7 Blocked vent switch (required in Canada) 24

5.8 Electrical connections 24

5.8.1 Fitting the controls 25

5.8.2 Fitting temperature sensor assembly
and burner cable 26

5.8.3 Connecting the power supply and additional
components 27

5.8.4 Fitting cable ties 27

5.9 Fitting outer casing panels 27

6 Commissioning the heating system 28

6.1 Bringing the system up to operating pressure 28

6.2 Checking the safety valve 28

6.3 Checking position of heat exchanger baffles 29

6.4 Preparing the heating system for operation 29

6.5 Starting up the control and the burner 29

6.6 Notes on commissioning the burner 30

6.7 Raising flue gas temperature 30

6.7.1 Adjusting the position of heat exchanger
baffles 31

6.7.2 Removing heat exchanger baffles 31

6.7.3 Removing the heat exchanger barrier plate 32

6.8 Manual reset high limit (STB) 32

6.9 Installing the burner door jacket 32

6.10 Commissioning log 33

7 Shutting down the heating system 34

7.1 Shutting down normally 34

7.2 Shutting down the heating system in an
emergency 34

7.2.1 What to do in an emergency 34

8 Heating system servicing 35

8.1 Why is regular maintenance important? 35

8.2 Preparing the boiler for servicing 35

8.3 Cleaning the boiler 36

8.3.1 Cleaning the boiler with brushes 36

8.3.2 Wet cleaning (chemical cleaning) 37

8.4 Checking heating system operating pressure 37

8.5 Testing relief valve 38

8.6 Servicing and maintenance logs 39

9 Troubleshooting 42

10 Installation examples 43

11 Parts lists 45

12 Circuit diagrams 50

1

Safety Considerations and Symbol Descriptions

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

3

1 Safety Considerations and Symbol Descriptions

1.1 Regarding this Manual

This document contains important information regarding
safe and proper installation, operation and maintenance of
the boiler.

The high tech G115 WS boiler is designated as a hot
water heating boiler.

The Installation and Maintenance Instructions are directed
to the installing contractor who has professional knowl­edge regarding boiler installation and maintenance.

1.2 Explanation of symbols

Signal words are used to indicate the seriousness of the
ensuing risk if measures for minimising 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.

1.3 Observe the following Symbols

All applicable local, state, and national codes and regula­tions must be observed for the installation of the boiler:

– The local building code requirements regarding place-

ment, combustion air and venting and chimney system

must be followed.
– Follow applicable electrical code requirements.
– Follow the local code and standards regarding safe

boiler operation.

Warnings are indicated by a warning triangle
and a grey background.

Notes are identified in the text by this symbol.
They are bounded by horizontal lines above
and below the text.

NOTICE

Use only original Buderus spare parts.
Buderus can not be held liable for damage
caused by non-Buderus parts.

NOTICE

The boiler installation must be performed by
a qualified installer in accordance with regu­lations put forth in NFPA-31 Installation of
Oil-Burning Equipment. The installation must
comply with all local and national codes, reg­ulations and authorities having jurisdiction re­garding the installation of oil fired boilers.

For Canada refer to the guidelines of CSA/
CGA-B139 Installation Codes.

1

Safety Considerations and Symbol Descriptions

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4

1.3.1 Installation Guidelines

1.3.2 Boiler Room Guidelines

1.4 Tools, Materials and Accessories

For the installation and maintenance of the boiler you will
need typical tools used in this industry.
In addition, the following components are useful:

– Hand truck with strap or Buderus boiler cart.
– Wood blocking.
– Cleaning brushes and/or chemical cleaning agents for

wet cleaning.

1.5 Disposal

V Please dispose of any trash in an environmentaly

friendly fashion.

V Please discard properly of any heating system related

components.

Caution: DANGER TO LIFE

from electric shock.

V Do not work on electrical components un-

less you have the required qualification.

V Do not work on electrical components un-

less you have the required qualification.

V Prior to opening the control: shut down

the power supply by turning off the emer­gency shut-off switch or disengaging the
heating system circuit breaker, and pre­vent from accidental reactivation.

V Observe all applicable installation guide-

lines.

Caution: DANGER TO LIFE

from flue gas poisoning.
Insufficient combustion air can result in dan­gerous operation if combustion air is taken
from indoors.

V Please observe that combustion air open-

ings are not reduced in size or closed.

V Make sure that no mechanical air open-

ings or devices remove combustion air
from the boiler room such as central vacu­um systems, dryers and air conditioning
appliances.

V Make sure that the boiler is connected to

a chimney or horizontal venting system
that is capable of handling the slight posi­tive breeching pressure.

V If any of these problems have not been

corrected, the boiler must not be operat­ed.

V Make the end-user aware of these guide-

lines and their potential danger.

Caution: FIRE DANGER

due to flammable or liquid materials.

V Make sure that flammable and liquid mate-

rials are not stored in the close vicinity of
the boiler.

2

Product description

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

5

2 Product description

This installation and maintenance manual contains impor­tant information for the safe and intended installation, ini­tial start-up and maintenance of this boiler.

The special oil fired boiler Logano G115 WS is generally
referred to below as a boiler.

The installation and maintenance manual is provided for
technicians who have been trained and have experience
in working with heating systems and oil fired installations.

2.1 Intended use

The G115 WS is designed for central heating and
domestic hot water (DHW) systems, for instance in resi­dential homes or apartment buildings, or small commer­cial applications.

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 Notes on installation and operation

When installing and operating the heating system, it is the
installer's responsibility to meet all applicable federal,
state, and local codes.

2.4 Heating system water quality

Poor water quality can damage heating systems due to
scale formation and corrosion.
Please refer to Chapter 2.8.6, Tab. 9 for further details of
the water quality.

Caution: Risk of system damage due to un­suitable boiler water.

V If 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 sys­tem water promotes sludge formation and
corrosion. This can result in heating sys­tem malfunction and boiler damage.

2

Product description

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2.5 Product description

The boiler is a low-temperature oil-fired appliance with
automatic control panel or aquastat for boiler water tem­perature.

The boiler consists of:
– Boiler heat exchanger with insulation
– Boiler jacket
– Control panel or aquastat

The controls monitor and control all electrical boiler com­ponents.

The boiler can alternatively be fitted with a simple aqua­stat control.

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.

Suitable burners

Fig. 1 Boiler without burner

1 Control panel
2 Boiler jacket
3 Boiler heat exchanger with insulation
4 Burner door
5 Burner door panel

Caution: Risk of system damage from use

of incorrect burner.
V Only the burner provided may be em-

ployed with this boiler.

6 720 615 225-01.1RS

1

2

3

4

5

2

Product description

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7

2.6 Pack contents

Upon delivery, check that the packaging is complete and
undamaged.

Component Qty Packaging

Boiler heat exchanger 1 1 pallet

Boiler casing, factory-fit­ted to boiler heat
exchanger

Burner door and burner
door panel, factory-fitted
to boiler heat exchanger

B-kit components:

– 1 Supply manifold

G115"US"

– elbow 90 ° 1-1/4"

– elbow 90 ° 3/4"

– double nipple R1-1/4"-

1-1/4" NPT x 75

– boiler drain 3/4"

– relief valve 3/4" x 3/4"

30PSI

– temperature/pressure

gauge

– Bolt set B-Kit

G115"US"

– adjustable boiler feet

M10 x 51 packed

1 1 foil package

1)

1) in the combustion chamber in the boiler

Controller or, alternatively,
Aquastat

2)

2) Aquastat may be supplied with burner

11 box

Technical documentation 1 foil package

Tab. 1 Package Contents

2

Product description

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8

2.7 Dimensions Specifications

2.7.1 Logano G115 WS dimensions

Fig. 2 Connections and dimensions (measurements in inches)

VK = Boiler supply
RK = Boiler return
EL = Boiler drain (connection for drain valve)

Connections and dimensions:

7 747 019 141-02.1RS

23

5/8"

L

VK

L

K

F

L

39

5/8"

30

3/8"

1

3/4"

2

7/8"

8

7/8"

8

7/8"

Rp1

1/4"

EL

Rp

3/4"2 7/8"

25

1/4"

RK

1" NPT

3

1/4"

Ø 5"

20"

10

3/8"

12

1/4"

5

7/8"

4

3/8"

5/8"

- 1"

Boiler model Unit G115/3 WS G115/4 WS G115/5 WS

Boiler sections 345
Heating capacity (gross output) MBtu/hr 85 109 136
Thermal output (net IBR output) MBtu/hr 74 95 119
Boiler water content Gal 8.7 10.8 12.9
Gas capacity cu.ft. 1.20 1.75 2.21
Oil firing rate GPH 0.7 0.9 1.0
Flue gas back-pressure W.C. 0.04" - 0.06"
Permissible flow temperatureSafety

1)

1) Limit (safety temperature limiter, STB)
Maximum permitted flow temperature = Safety limit (STB) - 32 °F
Example: Safety limit (STB) = 212 °F, maximum permitted flow temperature = 212 ° - 32 ° = 180 °F
The safety limit must meet the national regulations of the country concerned.

°F 230

Allowable operating pressure psi 58
Maximum time constant of thermostat and
high limit safety cut-out (STB)

s 40

Tab. 2 Technical data for boilers without burners

Boiler model Unit G115/3 WS G115/4 WS G115/5 WS

Boiler overall length (L) Inch 23-5/8" 28-5/8" 33-3/8"
Boiler block length (LK) Inch 21-1/8" 25-¾" 30-½"
Combustion chamber length Inch 16" 20-½" 25-¼"
Combustion chamber length Inch 10-5/8"
Burner door thickness Inch 3-5/8"
Distance between boiler feet (FL) Inch 10-3/8" 16-1/8" 20-7/8"
Net weight1)– Lbs 330 403 476

Tab. 3 Dimensions, weight and other data for boilers without burners

1) Incl. packaging material approx. 6-8 % more

2

Product description

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9

2.8 Conditions for operation

Maintaining the specified operating conditions will enable
the boiler to provide a high level of reliability and long serv­ice life. Some details relate only to operation with Buderus
Logamatic control panels.

2.8.1 General operating conditions

Caution: Ri sk of sys te m da ma ge if op er at in g

conditions are not maintained.
Irreversible damage to individual compo-

nents of the boiler as a whole or the heating
system may occur.

V The information on the rating plate is bind-

ing and must be observed.

Operating conditions

Min. boiler water tempera-

ture

Operating interruption

(complete boiler shutdown)

heating circuit with

heating circuit mixing valve

1)

Min. return temperature

In combination with Logamatic control for variable low-temperature operating modes, such as Logamatic 2107

no requirements operating

temperatures are ensured by

the Logamatic controls

2)

Automatically by Logamatic controls not required but recommended with

low-temperature heating system
design 130/113 °F

Required with:

– Underfloor heating systems

– Systems with high water content:

> 115° gal/MBH
(1 MBH = 100.000 Btu/hr)

In conjunction with a Logamatic controls for constant boiler water temperatures, e.g. Logamatic 2109 or with supplementary exter-

nal programmer and aquastat

150 °F

3)

possible if, after interruption of the
operation, there is at least 3 hours

heating operation

required Required with:

– Systems with high water content

> 115 gal/MBH: 130 °F

Tab. 4 General operating conditions

1) A heating circuit with a mixing valve improves controllability and is specifically recommended for systems with several heating zones.

2) If heating zones or a boiler circuit actuator cannot be regulated via the control device (for example pump logic), an operating temperature of

122 °F must be reached within 10 min of switching the burner ON by restricting the water volume flow.

3) Boiler water temperature control setting: when the boiler is in ON mode, the minimum boiler water temperature in the boiler must be reached

within 10 minutes, e.g. by flow rate limitation, and maintained as the minimum temperature.

2

Product description

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10

2.8.2 Conditions for the boiler room and the environment

2.8.3 Combustion air supply conditions

If the burner is to be operated with sealed combustion by drawing its combustion air solely from the outdoors, follow
burner manufacturer's specification.

2.8.4 Conditions, Fuel

Operating conditions Notes – Requirement in greater detail

Temperature in the boiler room +40 to +104 °F
relative humidity max. 90 % No condensation or precipitation inside the boiler room
Dust/airborne particles − Excessive dust inside the boiler room must be avoided when the boiler is operat-

ing, e. g.:

– Dust from building work

Combustion air supplied from outside must not be excessively loaded with dust
or airborne particles; if necessary, air filters should be fitted in case:

– Air supply contaminated with dust from dirt roads and paths.

– Air supply contaminated with dust from production and processing facilities, e. g. quar-

ries, mines, etc.

– Airborne particles from thistles and similar
Halogenated-hydrocarbon com­pounds

− The combustion air must be free from halogenated-hydrocarbon compounds.

– Identify the source of halogen-hydrocarbon compounds and seal it off. Where this is

impossible, route combustion air from areas that are not contaminated by halogen-

hydrocarbon compounds.
Fans that extract air from the
boiler room.

− During burner operation, no mechanical air handling equipment may be operated that could
extract combustion air from the boiler room, e.g.:

–Exhaust hood

– Tumble dryer

– Ventilation equipment

Small animals − Prevent small animals from entering the boiler room, particularly through the air inlet vents –

by fitting them with screens.

Fire safety − Maintain clearances between the boiler and flammable materials in accordance with local

regulations. A minimum clearance of 16" is required. Never store flammable materials or
liquids in the vicinity of the boiler.

Flooding − In case of an acute risk of flooding, disconnect the boiler in time from its fuel and power

supply before water enters the room. Any components or control equipment, which came
in contact with flood water, must be replaced before re-commissioning.

Tab. 5 Boiler room and ambient conditions

Operating conditions

Boiler output (in case of

multi-boiler systems = total output)

Ventilation air cross-section in square inches

(unrestricted aperture)

Air intake flow cross-section for
combustion air drawn from out­side (divided between max. 2
apertures)

< 170,000 Btu/hr At least 23.25 square inches

Tab. 6 Observe national regulations for boilers which draw their air supply from the boiler room.

Operating conditions Notes – Requirement in greater detail

Permissible fuels for boilers with­out integral burners

− This boiler can be operated with #2 Fuel Oil ASTM D396-05 Type 2. Select a burner that
is suitable for this fuel typ.

Contamination − Free of contaminants (for example dust, mist, humidity), i. e. a constant operation will not

lead to accumulation of deposits, in valves, strainers and filters and could lead to service
calls.

Tab. 7 Fuels

2

Product description

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11

2.8.5 Conditions power supply

2.8.6 Conditions for hydraulic system and water quality

Operating conditions Notes – Requirement in greater detail

Power supply voltage 120 V

AC nominal

Observe the voltage range of the burner and controls used. The outer casing/boiler must

be grounded for safety reasons and in order to function correctly.
Circuit breaker 10 A
Frequency 60 Hz
Enclosure rating − IP 40 (protected against contact by entry of foreign objects > 0.04 inches Ø

(> 1 mm Ø ), no water proofing)

Tab. 8 Power supply

Operating conditions Notes – Requirement in greater detail

Operating pressure (above
atmospheric)

15–58psi Maximum 30 psi with the supplied safety valve.

Permissible site test pressure 45 – 75 psi
Safety temperature limitation by
TR temperature control

122–194°F

Safety temperature limitation by
manual reset high limit (STB)

212 – 248 °F On some controls adjustable on site from 212 to 248 °F.

Water quality − The heating system may only be filled and topped up with water of domestic water quality.

We recommend a pH value of 8.2 – 9.5.

Tab. 9 System configuration and water quality

3

Moving the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

12

3 Moving the boiler

This chapter details how to move the boiler safely.

3.1 Reducing boiler weight for transportation purposes

If required, you can reduce the weight of the boiler by
removing the burner hood and door.

V Unscrew the burner door-panel screws.
V Lift burner door panel slightly and draw forward to

remove.

Fig. 3 Removing burner door panel

V Unscrew two hex-head bolts at the sides.
V Open burner door.
V Lift the burner door off its hinges.

Fig. 4 Removing the burner door

Caution: Risk of system damage from im­pact.

Fragile components could be damaged.

V Observe the transport instructions on the

packaging.

Protect boiler connections from damage and
dirt if the boiler is not installed immediately.

Dispose of packaging in an environmentally
responsible manner.

6 720 615 225-02.1RS

Prevent the burner door from falling over and
damaging the burner and blast tube.

7 747 019 141-04.1RS

3

Moving the boiler

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13

3.2 Lifting and carrying the boiler

The boiler can be held and carried at the grip positions
shown.

V Undo the transit screws.

Fig. 5 Lifting and carrying the boiler

3.3 Using transportation aids to transport the boiler

Moving the boiler with hand truck
V Place the hand truck (e.g. boiler trolley or sack truck) at

the back of the boiler.

V Secure boiler to hand truck using the boiler bolts or

strapping.

V Move the boiler to the installation location.

Fig. 6 Moving the boiler with a boiler hand truck

The boiler is secured to the pallet by 2
screws for transportation purposes.

Caution: Risk of injury from carrying heavy
loads.

V Always lift and move the equipment with

the assistance of another person using the
handle positions shown.

7 747 019 141-05.1RS

Caution: Risk of injury if load is inadequately
secured during transportation.

V Use suitable means of transportation, e.g.

the Buderus boiler hand truck with strap.

V Secure the load against falling.

You can order the boiler hand truck from your
Buderus distributor.

The boiler trolley can also be used to facilitate
work underneath the boiler, e.g. fitting the ad­justable feet (Æ Chapter 4.3, page 16).

7 747 019 141-06.1RS

4

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

14

4 Installing the boiler

This chapter describes how to install and place the boiler
in the boiler room.

4.1 Wall clearances

Position the boiler with the recommended wall clear­ances. Reducing the minimum clearances makes the
boiler more difficult to access during installation, mainte­nance and cleaning.

The boiler base or foundation must be perfectly flat and
level.

The burner door is factory-fitted with the hinges on the
right. The burner door can be converted to open to the left
(Chapter 4.2, page 15).

Fig. 7 Boiler room clearances (boiler positioned on the

l.h. or r.h. side)

Caution:

Risk of system damage from freezing.

V Install the heating system in a frost-free

room.

Dimen­sion

Wall clearance

A Recommended 51-1/8"

minimum 39-3/8"

B Recommended 27-½"

minimum 15-¾"

C Recommended 15-¾"

minimum 3-7/8"

L

K

Æ Chapter 2.7.1 "Logano G115 WS

dimensions", page 8

Tab. 10 Recommended and minimum wall clearances

(dimensions in inches).

7 747 019 141-07.1RS

The boilers are designed for a side clearance
of 6".
Where applicable, allow extra wall clearanc­es for additional components such as DHW
tank, pipe connections, flue gas silencer or
other flue components, etc.

Caution: Risk of fire from flammable materi­als or liquids.

V Clearances less than 6" must comply with

local and statutory codes.

V Make sure that there is a sufficient clear-

ance between combustible materials and
the chimney connection as specified by
NFPA 31 (distance of 18 ").

V The floor must comply with the require-

ments of NFPA 31.

4

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

15

4.2 Reversing boiler door

The burner door is factory-fitted with the hinges on the
right – the burner door opens to the right.You can change
the burner door hinges over to the left-hand side if desired
to suit the installation site.

Remove the burner hood/burner door panel first
(Æ Chapter 3.1, page 12).

V Removing the burner door (Æ Chapter 3.1, page 12).
V Unscrew the hinge bolts and remove the hinges.
V Mount the hinges on the left-hand side of the boiler

using the hinge bolts.

Fig. 8 Reversing the burner door (boiler heat

exchanger attachments)

1 Hinge bolts
2 Hinges

V First remove the hinge lobe bolts and then the hinge

lobes. Mount the hinge barrels on the left-hand side of
the boiler using the hinge-barrel bolts.

V Hook the burner door with the hinge lobes onto the

hinges.

V Check that the heat exchanger baffles are placed hori-

zontally (Æ Chapter 6.3, page 29).

V Close the burner door and secure with the two hexa-

gon-head bolts.Tighten the hexagon-head bolts evenly
(approx. 90 Lbs/inch) so that the burner door seals
properly.

Fig. 9 Reversing the burner door (door attachments)

1 Hinge-barrel bolts
2 Hinge lobes
3 Burner door
4 Hinges
5 Heat exchanger baffle plates

7 747 019 141-08.1RS

12 21

If the burner door hinges have been changed
over to the left-hand side, the burner cable
must be disconnected from the burner before
opening the burner door.

7 747 019 141-09.1RS

1

4

5

2

3

4

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

16

4.3 Mounting the adjustable feet (included with B-kit)

Level the boiler with the adjustable feet to prevent air
pockets forming inside the boiler.

Requirement: the burner hood/burner door panel must
have been removed first (Æ Chapter 3.1, page 12).

V Tilt the boiler with the aid of a hand truck or trolley

(Æ Chapter 3.3, page 13) or place a wooden batten
underneath it.

V Screw in adjustable feet ¼" – 3/8".
V Gently set the boiler down.

Fig. 10 Fitting adjustable feet

1 Angle bracket
2 Adjustable feet

4.4 Positioning and leveling the boiler

V Position the boiler in its final location.
V Level the boiler horizontally by turning the adjustable

feet and using a level.

Fig. 11 Leveling the boiler horizontally

If the boiler is mounted on top of a horizontal
hot water tank, the adjustable feet are not
needed.

7 747 019 141-10.1RS

1

2

Protect boiler connections from damage and
dirt if the boiler is not installed immediately.

7 747 019 141-11.1RS

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

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5 Installing the boiler

This chapter details how to install your boiler correctly.
The individual steps involved are:

– Connecting the flue
– Connecting the water pipes
– Making the electrical connections
– Fitting the burner
– Connecting the fuel supply

5.1 Flue pipe installation

5.1.1 Chimney venting

Connect boiler to vertical chimney with a 5" vent pipe.
Use only venting systems that comply with local codes
and regulations.

If local codes are not existent, refer the the following reg­ulations:

– NFPA 31, Installation of Oil-Burning Equipment,
– NFPA 211, Standard for Chimneys, Fire Places and

Solid Fuel Burning Appliances,

– In Canada refer to CSA B139, Installation Code for Oil-

Burning Equipment,

– NFPA 211 requires chimney to be lined before con-

necting boiler.

Inspecting and cleaning existing flue

Before installing the new boiler, check and clean the old
flue system.

V Remove blockages and dirt from the chimney.
V Clean chimney.
V Repair or replace faulty sections.
V If necessary, repair chimney with mortar and joints.

Down drafts

To prevent down drafts extend chimney at
least 3 feet above the roof opening and at
least 2 feet above any part of the roof within
a radius of 10 feet.

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

18

Minimum clearances to combustible material

Minimum size of chimney

The minimum recommended chimney size is 8" x 8"
(6 ¾" x 6 ¾" inside liner) or 6" diameter with a minimum
height of 15 feet. Use a 5" flue pipe for connection to an
existing chimney.

Installing the flue pipe

V Insert flue pipe 5" onto the breach and secure with

3 screws.

V Install flue connections between boiler and chimney to

slope up at least ¼" per foot to the chimney.

V Connect the flue pipe to the chimney above the bottom

of the chimney to prevent blockages.

V Install cleaning and service hatches.

After starting the burner, set breeching draft to -0.01 to

-0.02 inches WC using a draft gauge. The overfire pres­sure can be positive. If necessary, install a barometric
damper in the flue system to maintain the underpressure
in the system or to meet code requirements. Always install
the draft controller in vertical position. Use a draft gauge
when making adjustments.

Fig. 12 Installing the flue pipe

1 Flue pipe
2 Boiler flue socket

Flue pipe Type Minimum clearance

Double-wall L 6"

Single-wall L 18"

Tab. 11 Minimum clearances to combustible objects for

flue systems

Danger: Risk of death from escaping flue
gases.

If the resistance to flue gas flow is too great
and/or the flue pipe diameter is smaller than
the recommended size and/or the flue pipe is
too short:

V Seal all vent pipe joints.
V Install a CO alarm. Positive pressure com-

bustion ensures that the flue gas can exit
the flue system.

Avoid long horizontal flue pipe runs and keep
the number of elbows to a minimum.

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

19

5.2 Fitting the water connections

5.2.1 Fitting the B-kit

The safety relief valve and the pressure/temperature
gauge are mounted on the supply manifold (included in B­Kit) on the VK boiler supply connection as follows:

V Fit and seal unmarked end of double nipple into con-

nection VK on the boiler.

V Converter is paint-marked pink and stamped with the

designation NPT on the end with the 1¼" NPT thread.

Fig. 13 Checking thread length on double nipple

V Seal 90° 1¼" NPT street elbow on double nipple.
V Fit and seal manifold to 90° elbow. The manifold can

face in different directions (Æ Fig. 14).

V Seal pressure/temperature gauge to supply manifold.

Fig. 14 Installing B-Kit

1 90° 1¼" NPT street elbow
2 Double nipple
3 Supply manifold
4 Pressure/temperature gauge
5 Pressure relief valve
6 90° ¾" NPT elbow

Caution: Risk of system damage from leak-

ing connections.
V Support the pipes to the boiler to prevent

them from being under stress.

Do not fit the safety valve until the leak test
(Æ Chapter 5.3, page 21) has been com­pleted.
The relief valve must be installed in a vertical
position.

We recommend installing a dirt filter (option­al) in the boiler return connection to reduce
build-up of debris on the water side.

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

20

5.2.2 Installation of boiler drain (included in B-Kit)

V Seal boiler drain to connection EL.

Fig. 15 Installation of boiler drain

RK Return
EL Drain

5.2.3 Installing system components

See the installation diagram for installation of the heating
system components.

For more installation examples refer to Æ Chapter 10,
page 43.

Fig. 16 Installation diagram

1 Pressure relief valve
2 Pressure/temperature gauge
3 Ball or stop valve
4 Air eliminator (in main supply)
5 System pump
6 Flow check valve
7 Expansion tank
8 Automatic feed valve
9 Flow check valve
10 Purge station
11 Water feed
VK Boiler supply
EL Drain
RK Return

Install a fill connection in the supply piping to
the boiler.

7 747 019 141-15.1RS

RK

EL

7 747 019 141-16.1RS

1

2

33 563

3

7

3

98

VK

RK

11

EL

4

10

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

21

5.3 Filling the heating system and checking for leaks

The boiler is tested for leaks at the factory. Before putting
the heating system into operation, it must be checked to
ensure that no leaks will occur during operation.

Carry out the leak test at 1.5 times the standard operating
pressure and in accordance with the codes.

V Seal pressure relief valve connection (Æ Fig. 14

"Installing B-Kit", page 19) and all other open connec­tion with blind plugs.

V Isolate the expansion tank from the system by closing

the valve.

V Open the mixing and shut-off valves on the heating

water (primary) side.

V Slowly fill the boiler with tap water.

Fig. 17 Pressure/temperature gauge

Caution: Risk of system damage from ex­cess pressure when testing for leaks.

Pressure, control and safety equipment may
be damaged by excessive pressure.

V When you carry out a leakage test, make

sure that no pressure, control or safety
equipment that cannot be isolated from
the boiler water chamber is fitted.

Caution: Risk of damage to system due to
temperature stresses.

If you fill the heating system when it is hot, the
resulting temperature stresses can cause
stress cracks. The boiler will then leak.

V Only fill the heating system when cold (the

flow temperature should be no more than
100 °F).

V Pay attention to the water quality as spec-

ified in the operator's log, and record the
volume and quality of the water used to fill
the system.

Maximum
operating pressure

Maximum
on-site testing pressure

30 psi (with safety valve
supplied)

45 psi

58 psi (with 50 psi relief
valve)

75 psi

Tab. 12 Maximum testing pressure

7 747 019 141-17.1RS

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

22

V Open the cap of the automatic air vent by one full turn

to allow air to escape.

V Slowly fill the heating system. Observe the pressure

gauge whilst filling.

V Check the connections and pipework for leaks.
V Bleed the system via the radiator bleed valves if appli-

cable.

V Top with water if the pressure drops as a result of

bleeding the system.

V Installing pressure relief valve (Æ Fig. 14 "Installing B-

Kit", page 19)

Caution: Health risk from contaminated do­mestic water.

V Always observe the regulations and stand-

ards applicable in your jurisdiction for the
prevention of contamination of drinking
water (e.g. by water from heating sys­tems).

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

23

5.4 Mounting the burner

Only burners that comply with the boiler specification can
be used with this boiler. (Æ Chapter 2.7, page 8).

V Screw studs included with the B-Kit to the burner door.

V Install burner with the correct nozzle and settings (air,

pump pressure, turbulator settings, flange position).

V Place the seal on the studs and secure the burner with

the included nuts.

V Follow the manufacturer’s direction for installation, fine

adjustment and regular maintenance procedures.

Fig. 18 Burner door mounting holes

5.5 Connecting the fuel supply

Make the fuel connection in accordance with all applica­ble local and national codes and regulations. We recom­mend fitting a fuel filter and de-aerator.

V Visually inspect the fuel pipe and clean or replace, if

necessary.

V Install a shut-off valve into the fuel supply pipe.
V Connect the fuel pipe free of stress to the boiler.
V Check the fuel line for leaks.

Caution: Risk of system damage from use of
incorrect fuel.

V Only use burners which meet the techni-

cal boiler requirements.

Approved burners with accessories (such as
aquastat and circulator) are also available as
a package from Buderus.

For details of the correct burner settings

Æ flue system documentation and
Æ burner documentation.

7 747 019 141-18.1RS

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

24

5.6 Installing aquastat

An aquastat controls the boiler supply temperature.

V Install aquastats in the sensor well as specified by the

installation manual.

For operating the boiler with aquastat Æ Chapter 6,
page 28.

Fig. 19 Aquastat installation

1 Immersion sleeve

5.7 Blocked vent switch (required in Canada)

For Canadian installations fit a blocked vent switch per
the vent switch manufacturer’s instructions and as close
as possible to the boiler breach.

See pages 50 - 52 for wiring diagrams.

5.8 Electrical connections

This section only applies to boilers using Buderus con­trols.

V Remove rear boiler jacket.

– Unscrew the fixing screws.

V Remove cover panel. Wiring from the control panel to

the burner is passed through the hole in the front boiler
top panel.

Fig. 20 Removing rear boiler cover and cover plate.

1

7 747 019 141-19.1RS

Danger: Risk of death from electric shock.

V Electrical work may only be carried out by

qualified technicians. Before opening any
electrical equipment, isolate it from the
power supply by turning off the emergen­cy shut-off switch or disengaging the heat­ing system circuit breaker, and prevent
from accidental reactivation. Follow the in­stallation instructions.

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

25

5.8.1 Fitting the controls

V Position the tabs of the controls in the slots.
V Slide the controls forwards towards the burner door.
V Let the flexible hooks of the control panel click into the

openings by pushing the control panel down.

Fig. 21 Fitting the controls

1 Flexible catches
2 Locating tabs
3 Slots
4 Locating holes

V Remove the controls cover.

– Unscrew the cover screws.

V Secure the controls with self-tapping screws.

Fig. 22 Cover, removing

1 Cover screws
2 Self-tapping screws

1

2

3

7 747 019 141-21.1RS

1

2

7 747 019 141-22.1RS

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

26

5.8.2 Fitting temperature sensor assembly and burner cable

V Route capillary tubes and sensor wiring through the

cable opening of the front boiler jacket and connect to
test port.

V Roll up surplus capillary tubes and sensor lead and lay

them on the thermal insulation.

V Route the burner cable through the cable entry in the

front boiler cover to the control panel.

V Connect the burner cable to the control in accordance

with the terminal markings.

Fig. 23 Routing and connecting cables

1 Cable entry in the front boiler cover
2 Capillary tube and sensor cable
3 Immersion well (sensing point)
4 Burner cable

V Insert the temperature sensor assembly and balancing

spring in the immersion well and insert completely. The
plastic spiral is then pushed back automatically.

V Push the sensor retaining clip (supplied with the con-

trols) onto the top of the immersion well from the side.

Fig. 24 Fitting the temperature sensor assembly

1 Immersion well (sensing point)
2 Plastic coil
3 Balancing spring
4 Sensor retaining clip

Caution: Risk of system damage due to se-

vere kinking or sharp burrs on capillary tubes.
Capillary tubes can get damaged from se-

vere kinking or sharp burrs.

V Route capillary tubes carefully, avoiding

bending them excessively.

The boiler comes factory equipped with the
sensor immersion well for the Aquastat.

V If a Buderus Logamatic controls is being

installed, the factory-fitted immersion well
must be replaced by the Logamatic well
supplied with the controls.

Ensure good contact between the sensor
surfaces and the sensor well to achieve accu­rate readings. Use the balancing spring.

1

1

4

2

3

7 747 019 141-24.1RS

5

Installing the boiler

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

27

5.8.3 Connecting the power supply and additional components

Establish a permanent connection to the mains power
supply in accordance with the locally applicable regula­tions.

V Route all cables through the cable entries to the control

panel and connect in accordance with the wiring dia­gram.

5.8.4 Fitting cable ties

Secure all cable runs with cable ties (included with the
control):

V Insert the cable ties together with the cable from the

top into the slots in the frame (step 1).

V Slide the cable ties downward (step 2).
V Push against the ties (step 3).
V Flip the toggle up (step 4).

Fig. 25 Securing cables with cable ties

5.9 Fitting outer casing panels

V Position and secure the control device cover.
V Fit the rear boiler cover.
V Secure by reinstalling cover screws and jacket panel

screws.

Fig. 26 Fitting the rear boiler cover

1 Controls cover
2 Rear boiler cover

Warning: Fire hazard from hot boiler compo-

nents.
Hot boiler components may damage electri-

cal cables.

V Ensure that all wiring is routed in the ducts

provided or on the boiler insulation.

7 747 019 141-25.1RS

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

28

6 Commissioning the heating system

This chapter describes the initial start-up procedure
regardless of the installed control device.

V Complete the start-up protocol during this process

(Æ Chapter 6.10, page 33).

Further information on boiler room layout and clearances,
combustion air requirements and venting systems and
boiler operational requirements can be found in
Æ Chapter 2.8, page 9.

6.1 Bringing the system up to operating pressure

Bring the system up to the normal operating pressure
before commissioning.

V Top up the heating water or drain via the boiler drain

valve until the required operating pressure has been
reached: minimum 15 psi, maximum 30 psi pressure.

V Bleed air from the heating system while filling.

6.2 Checking the safety valve

V Make sure that no persons are in the discharge area of

the pressure relief valve.

V Raise the lever on the pressure relief valve.

The pressure relief valve must open and release pressure.
If the pressure relief valve does not discharge, it must be
replaced, because system components can be damaged
by excessive pressure.

Fig. 27 Pressure/temperature gauge for showing oper-

ating pressure and supply temperature

Caution: Risk of boiler damage from exces­sive dust and airborne particle levels.

V Do not operate the boiler when there is a

lot of dust in the boiler room, e.g. due to
construction work.

V Install an air filter if the combustion air sup-

ply is very dusty (e.g. due to dirt roads and
paths or dust-generating working environ­ments such as quarries, mines etc.) or
contains airborne seeds from composite
plants.

Caution: Risk of damage to system due to
material stresses caused by temperature dif­ferentials.

V Only fill the heating system when cold (the

flow temperature should be no more than
100 °F).

7 747 019 141-17.1RS

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

29

6.3 Checking position of heat exchanger baffles

Prior to commissioning, check that the heat exchanger
baffles are in a horizontal position:

V Open burner door by removing the two hexagon-head

bolts at the sides.

V Slightly withdraw the flue gas baffles from the heat

exchanger.

V Adjust the heat exchanger baffles to a horizontal posi-

tion and push them back into the heat exchanger.

V Close burner door with the two hexagon bolts (approx.

90 inch-lbs). Tighten the hexagon bolts evenly to prop­erly seal the burner door.

Fig. 28 Opening the burner door

1 Flue gas baffles in the heat exchanger

6.4 Preparing the heating system for operation

V Open the fuel supply at the main shut-off valve.
V Switch on the heating system emergency shut-off

switch and/or the appropriate circuit-breaker.

6.5 Starting up the control and the burner

For further start-up steps, follow the burner start-up
sequence.To do so, it is essential that you consult the
burner Æ documentation.

Use the on/off switch on the controls to switch the heat­ing system on. The burner starts up if the system is calling
for heat or if you set the controls to manual mode.
Æ service instructions for the controls.

V Select "Manual" mode .
V Set the boiler water temperature control to the desired

temperature.

V Switch the on/off switch on (position "I").

Fig. 29 Switching on the controller

(e. g. Logamatic 2000)

1 Boiler water thermostat
2 On/off switch

1

7 747 019 141-27.1RS

1

2

7 747 019 141-28.1RS

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

30

6.6 Notes on commissioning the burner

Allow burner to operate for 15 to 20 minutes before per­forming a combustion test. Earlier combustion tests can
lead to incorrect readings as a result of burning off the
sealing rope. We recommend rechecking the burner after
a few weeks of operation.

Required instruments:
–CO

2

measuring equipment
– Draft measuring equipment
– Oil pressure gauge
– Stack thermometer
–Smoke tester

V Check the combustion chamber pressure at the test

port.

V Check the breeching draft at a test port drilled in the

vent connector (chimney vent models only).

Fig. 30 Pressure test port on burner door

1 Pressure test port

6.7 Raising flue gas temperature

For the set flue gas temperature for the boiler see the
technical data (Æ Chapter 2.7, page 8).

You may raise the flue gas temperature if you discover
during tests that the flue gas temperature is too low for
the type of chimney used (risk of condensation) by one or
several of the following measures:

Incorrect burner adjustment can cause con­tamination of the boiler (e.g. soot), leading to
low efficiency, high emissions, and a greater
risk of service calls.

V Always check combustion with the follow-

ing instruments.

V Never adjust burner visually.

1

7 747 019 141-29.1RS

Caution: Risk of burning by touching hot
boiler parts.

V Wear appropriate protective gloves or use

pliers.

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

31

V Adjusting the position of heat exchanger baffles

-or­V Removing heat exchanger baffles

-or­V Removing the heat exchanger barrier plate

6.7.1 Adjusting the position of heat exchanger baffles

Only adjust or remove heat the exchanger baffles in pairs.
V Open burner door by removing the two hexagon-head

bolts at the sides.

V Adjusting the position of heat exchanger baffles.
V Slightly withdraw the flue gas baffles from the heat

exchanger.

V Turn the heat exchanger baffles to a slanting position

and push them back into the heat exchanger.

V Close burner door with the two hexagon bolts (approx.

90 inch-lbs). Tighten the hexagon bolts evenly to prop­erly seal the burner door.

V Re-check the flue gas temperature.

Fig. 31 Adjusting the position of heat exchanger baffles

6.7.2 Removing heat exchanger baffles

You can remove the baffle plates in pairs to raise the flue
gas temperature.

V Open burner door by removing the two hexagon-head

bolts at the sides.

V Remove the baffle plates towards the front.
V Close burner door with the two hexagon bolts (approx.

90 inch-lbs) Tighten the hexagon bolts evenly to prop­erly seal the burner door.

V Re-check the flue gas temperature.

Fig. 32 Removing heat exchanger baffles

7 747 019 141-30.1RS

7 747 019 141-31.1RS

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

32

6.7.3 Removing the heat exchanger barrier plate

You can remove the blocking plate to further raise the flue
gas temperature if the flue gas temperature is still too low
after removing of the baffles.

V Open burner door by removing the two hexagon-head

bolts at the sides.

V Remove diverter plate by loosening bolt.
V Re-check the flue gas temperature.

Fig. 33 Removing the heat exchanger barrier plate

6.8 Manual reset high limit (STB)

The manual reset high limit interrupts the power supply if
the maximum permissible flow temperature is exceeded.

To enable a boiler reset and re-starting, the fault must be
removed and the system temperature must have fallen
below the limit.

V Check the function of the manual reset high limit

(Æ controls maintenance instructions).

6.9 Installing the burner door jacket

V Position the burner door panel on the hooks on the

boiler casing.

V Secure the burner door panel with the two screws at

the sides.

V The Logano G115 WS must be fitted with a burner that

has an operating range that matches the specifications
of the Logano G115 WS.

V Mount the selected burner to the hole circle in the

burner door.

V Connect burner cable to burner. (Æ Installation instruc-

tions of burner).

Fig. 34 Installing the burner door jacket

7 747 019 141-32.1RS

Danger: Risk of fatal injury from electric
shock.

V Only operate the boiler with the burner

hood/door panel fitted.

Caution: Risk of system damage from use
of incorrect fuel.

V Only use burners which meet the techni-

cal requirements of the Logano G115 WS
(Æ Chapter 2.7, page 8).

7 720 615 225-03.1RS

6

Commissioning the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

33

6.10 Commissioning log

V Initial and date the commissioning steps carried out.

Commissioning operations Page Readings taken Comments

1. Fill heating system and check for leaks 21

____________ psi

– Heating system pressure

2. Bringing the system up to operating pressure

V bleeding heating system

V Testing relief valve

V adjust the expansion tank pressure (Æ see the expansion tank

manufacturer’s documentation)

28

____________ psi

3. Checking combustion air supply and flue system

4. Checking position of heat exchanger baffles 29

5. Switching on the controls and burner (Æ controls' documenta­tion)

29

6. Checking flue gas temperature and raising if required 30

____________ °F

7. Checking the manual reset high limit (STB) 32

8. Adjusting the controls settings to suit the customer's require­ments (Æ controls' documentation)

9. Informing the end user and handing over technical documentation

Confirmation of properly completed commissioning Company stamp/signature/date

Inform the customer about the correct fuel
and correct operating pressure. Enter the de­tails in the table (Æ boiler operating instruc­tions).

7

Shutting down the heating system

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

34

7 Shutting down the heating system

7.1 Shutting down normally

V With Buderus controls: switch off the on/off switch on

the controls (position "0"). This switches off the boiler
and all its components (e.g. burner).

Fig. 35 Switching off the heating system

(Logamatic 2000)

1 On/off switch

V When using the aquastat: Shut off main heating system

by turning off the emergency shut-off switch (position
"OFF"). This switches off the boiler with all its compo­nents.

V Further shut-down procedure Æ refer to aquastat doc-

umentation.

Fig. 36 Heating system emergency shut-off switch

V Shut off fuel supply by closing main valve.

7.2 Shutting down the heating system in an emergency

7.2.1 What to do in an emergency

Explain to the customer what to do in an emergency, e.g.
a fire.

V Never put yourself at risk of fatal injury. Your own safety

must always take the highest priority.

V Disconnect the heating system from the electrical

power supply by means of the emergency shutoff
switch or the heating system circuit-breaker.

Caution: Risk of system damage from freez­ing.

If the heating system has been switched off,
it may freeze up in cold weather conditions.

V Leave the heating system switched on as

long as possible.

V Protect a disabled heating system from

freezing by draining the heating system
and hot water pipes at the lowest point.

1

7 747 019 141-34.1RS

7 747 019 141-35.1RS

Use the heating system emergency shut-off
switch located outside the boiler room or the
heating system circuit-breaker for emergency
shutdown.

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

35

8 Heating system servicing

8.1 Why is regular maintenance important?

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,
– to ensure reliable operation and long service life.

Servicing work may only be carried out by a qualified serv­ice technician. If parts are replaced, only Buderus
approved components may be used. A service must be
carried out once a year. The results of the services must
be recorded in the servicing and maintenance log.

8.2 Preparing the boiler for servicing

V Shut down the heating system. (Æ Chapter 7.1,

page 34)
V Remove the burner door panel or the burner hood from

the boiler. (Æ Chapter 3.1, page 12)
V Disconnect electrical supply to burner.

Spare parts can be ordered from Buderus us­ing the parts list.

Danger: Risk of death from electric shock.
V Before working on the boiler and prior to

opening control panel:
shut down the power supply by turning off
the emergency shut-off switch or disen­gaging the heating system circuit breaker,
and prevent from accidental reactivation.

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

36

8.3 Cleaning the boiler

The boiler can be cleaned with brushes and/or by a wet
method. Cleaning equipment is available as accessory.

V Open burner door by removing the two hexagon bolts

on the sides.

8.3.1 Cleaning the boiler with brushes

V Note the position of the heat exchanger baffles for later.
V Remove the hot gas baffle plates from the hot gas pas-

sages.

V Clean the hot gas baffle plates with one of the two

cleaning brushes.

Fig. 37 After opening the burner door

1 Flue gas baffles in the heat exchanger

V Clean the hot gas passages by turning the round clean-

ing brush.

Fig. 38 Brushing out the hot gas flues

V Clean the combustion chamber with a flat brush.

Remove the debris from the combustion chamber, the
hot gas flues and the flue connection.

V Refit the heat exchanger baffles in their original posi-

tions.

V Check sealing rope on burner door. Replace damaged

or hardened gasket cord.

V Close burner door with the two hexagon bolts (approx.

90 inch-lbs). Tighten the hexagon bolts evenly.

Fig. 39 Brushing out the combustion chamber

Caution: Risk of burning by touching hot
boiler parts.

V Wear appropriate protective personal

safety equipment.

1

7 747 019 141-27.1RS

7 747 019 141-37.1RS

You can obtain suitable gasket cord from
your local Buderus sales office.

7 747 019 141-38.1RS

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

37

8.3.2 Wet cleaning (chemical cleaning)

For wet cleaning use a cleaning agent appropriate for the
degree of soiling (soot or scale). Proceed with the wet
cleaning in the same order as described for cleaning with
brushes (Æ Chapter 8.3.1, page 36).

V Cover the control panel with plastic to prevent spray

from entering the control panel.
V Spray cleaning agent evenly into the heat exchanger

heater passages.

V Close burner door and start up the heating system.
V Heat the boiler to a temperature of at least 160 °F.
V Shut down the heating system.
V Brush out the heat exchanger heater.

8.4 Checking heating system operating pressure

The system pressure for closed systems must be
15 – 30 psi (1.0 – 2.1 bar).

V Check system pressure.
V If the pressure gauge shows less than 15 psi, the pres-

sure is too low. Top up the system with water.

Fig. 40 Pressure/temperature gauge for showing oper-

ating pressure and feed temperature

Follow the instructions for the cleaning prod­uct. You may need to proceed differently
from the method described here in some cir­cumstances.

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, depending on
the water quality.

V Ensure that your heating system is bled

properly.

V Check the heating system for leaks and

proper operation of the expansion vessel.

7 747 019 141-17.1RS

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

38

V Add water through the feed valve.
V Bleed the heating system.
V Check the operating pressure again.

8.5 Testing relief valve

The functioning of the pressure relief valve must be
checked at regular intervals (1-3 years as specified by
local codes).

V Make sure that no persons are in the discharge area of

the pressure relief valve.

V Raise the lever on the pressure relief valve.

The pressure relief valve must open and release pressure.
If the pressure relief valve does not discharge, it must be
replaced, because system components may be damaged
by excessive pressure.

Caution: Risk of damage to system due to
material stresses caused by temperature dif­ferentials.

V Only fill the system when cold (the flow

temperature at the temperature/pressure
gauge should be no more than 100 °F).

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

39

8.6 Servicing and maintenance logs

V Initial and date the servicing operations completed. The inspection and servicing logs can also be used as

copy masters.

Service work Page Date:______ Date:______ Date:______

1. Check general condition of heating system

2. Visual inspection and function check of the heating
system

3. Checking fuel and water-carrying components of the
system for:

– leaks during operation

–leak test

– visible signs of corrosion

– signs of ageing

4. Check the combustion chamber and the heating sur­face for contamination; shut down the system for this
step

34

5. Checking the burner (Æ burner documentation)

6. Check the combustion air supply and flue gas routing
for function and safety

7. Check the operating pressure, relief valve and expan­sion tank inlet pressure

37

8. Checking function of DHW tank and sacrificial anode
(Æ DHW tank documentation)

9. Checking controls settings (Æ controls' documenta­tion)

10. Record the final checks of the inspection work, incl.
measurements and test results

Confirmation of properly completed servicing Company

stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

40

Date:______ Date:______ Date:______ Date:______ Date:______ Date:______ Date:______

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

If any condition requiring maintenance work
is identified in the course of servicing, that
work must be carried out as necessary to en­sure safe and proper operation.

8

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

41

On-demand maintenance procedures Page Date:______ Date:______ Date:______

1. Shutting down the heating system 34

2. Removing and cleaning the heat exchanger baffles 36

3. Cleaning heat exchanger heater flue (heating surfaces)

and combustion chamber and afterwards refitting heat
exchanger baffles in original positions

36

4. Checking seals/cord gaskets on burner door and

burner and replacing as necessary

36

5. Commissioning the heating system 29

6. Final check of the servicing work

7. Checking safe and proper operation

Confirmation of properly completed servicing Company

stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Date:______ Date:______ Date:______ Date:______ Date:______ Date:______ Date:______

1.

2.

3.

4.

5.

6.

7.

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

Company
stamp/signa­ture

9

Troubleshooting

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

42

9 Troubleshooting

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 controls display if it has one. For further information
see Æ controls' documentation.

Correcting burner faults

V Press reset button on burner.

Fig. 41 Resetting the burner

1 Burner

Caution: Risk of system damage due to too

many resets
Too many resets can damage the burner's ig-

nition transformer.

V Do not press the reset button more than

three times in a row.

V If the fault does not reset after the third at-

tempt, try to localize and rectify the fault
with the help of the burner documentation.

V Notify a service engineer if necessary.

Caution: Risk of system damage from freez­ing.

The heating system can freeze up in cold
weather if it has been disabled by a fault
shutdown.

V Rectify the fault immediately and restart

the heating system.

V If this is not possible, protect your heating

system from freezing by draining the heat­ing system and hot water pipes at the low­est point.

1

6 720 615 225-04.1RS

10

Installation examples

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

43

10 Installation examples

Key to abbreviations

Fig. 42 Multiple circuits with circuit valves

1 Baseboard

Fig. 43 Multiple circuits with circuit valves

1 Baseboard

KR Check valve SH Heating circuit adjuster

MAG Expansion tank SV Pressure relief valve

PH System pump THV Thermostatic radiator valve

PW Hot water pump WH Water compensation pipe (diversion)

7 747 019 141-40.1RS

SV

PH

MAG

THV

G125 WS/NA

1

1

1

G115 WS/NA

7 747 019 141-41.1RS

SV

PH

KR

MAG

G125 WS/NA

1

1

1

G115 WS/NA

10

Installation examples

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

44

Fig. 44 Multiple circuits of water diversion for systems with a high water volume

1 Radiator
2 Boiler bypass

Fig. 45 Multiple circuits with pumps and motor-actuated 3-way mixing valve

1 Baseboard

7 747 019 141-42.1RS

SV

PH

THV

MAG WH

G125 WS/NA

3/4"

1

1

1

2

G115 WS/NA

7 747 019 141-43.1RS

SV

R2107

PH

PH

SH

180˚

100˚

100˚120˚

160˚180˚

M

PS

KR

KR

MAG

G125 WS/NA

1

G115 WS/NA

11

Parts lists

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

45

11 Parts lists

The following parts are available from Buderus. If there are
several Buderus article numbers for one item number, the
numbers for the various models are listed in the relevant
columns. Otherwise the table shows the number of com­ponents for each model.

Legend for tables 13 and 14:

x = no spare part

(x) = component of a set, only available with set

0 = no picture available

Boiler block and burner door (Æ Fig. 46)

Item no. Description Part number

G115/3 WS

3 section

G115/4 WS

4 section

G115/5 WS

5 section

10 Boiler block G115 WS 63036027 63036028 63036029

Available front section components

21 Plug G1 1/4" right 86055310
22 Gasket D 41.7x55x1.5mm AFM 34, left 86159710
23 Barrier plate with countersunk bolt, M8x16 63015342
24 Countersunk bolt DIN 7991 -M 8 x 16 -Ms (x)

Available back section components

50 Gasket D33x44x2mm 63005462
51 Plug G 1 05317712
52 Stud bolt, M10x65 5.6 as per drawing 05555070
20 Spacer sleeve R3/8"x39 (x)
54 Hexagon nut ISO4032-M10-8-A3K (x)
55 Washer DIN115-A10.5-A3K (x)
57 Reducer nipple G1"xG3/4" 63027607

60 Sensor sleeve PMW -3 SEE (4 1/2")"US" 7747022364
70 Anchor bolt set, M8x310mm 05127574 - ­70 Anchor bolt set, M8x440mm - 05127578 ­70 Anchor bolt set, M8x555mm - - 05127580

80 Flue connection complete 05354074

Available flue connection components

81 Sealing rope 8x1050 GP 63020961
0 Gasket compound brown (cartridge 310 ml) for gluing sealing rope 63014361

90 Feed-in connector assy. 1 1/4-NPT1, G115/G115 WS 63028062 63028062 63028061
91 Seal 55x41.7x1.5 mm 05752540

Spare parts that are supplied with the spare boiler block

120 Heat exchanger baffle 05347085 05347087 05347089

130 Angle bracket 420mm long 7747000018 – –
130 Angle bracket 540mm long – 7747000019 –
130 Angle bracket 660mm long – – 7747000020
131 Washer DIN126-9 (x)
132 Hexagon bolt ISO 4017 -M8x25-8.8 (x)
133 Hexagon nut DIN 6923-M8-8.8-A3K (x)

140 Hinge bracket G105/G115 05327033
141 Washer DIN125-A10.5-A3K (x)
142 Hexagon bolt ISO4017-M10x25-8.8 (x)
150 Hexagon bolt ISO4014-M10x65-8.8 (x)
160 Washer DIN125-A10.5-A3K (x)
180 Boiler feet M10x51mm complete 05236440

190 Flue pipe sealing collarDN130 complete 05354010

Tab. 13 Boiler block and burner door

11

Parts lists

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

46

200

Flue silencer DN130 complete, without condensate drain; higher sound
absorption

05074020

or:

210

Flue silencer D130 with an adaptor of 100mm length, with condensate drain;
lower sound absorption

05074022

Flue silencer components

190 Flue pipe sealing collarDN130 complete 05354010
220 Flue pipe sealing collar assy. DN130 (stepped) 05354030
230 Sealing rope 10x2000 GP 63020963

250 Burner door complete 63023858

Available burner door components

260 Hinge G 215 05327020
270 Washer DIN125 A10,5 A3K (x)
280 Hexagon bolt ISO4017 M10x25 8. (x)
290 Inspection window seal assy. V3 63023634

Obtainable individual parts of inspection window seal

300 Gasket 30x30x3 63014382
310 Inspection window glass, Tempax 30x30x3.3mm 05447620
320 Inspection window cover x
330 Hexagon bolt ISO4017 M6x12 8.8 A3K (x)
340 Pressure testing nozzle M6 SW10 V2 (x)

350 Heat insulation for burner door BE/non-Buderus burner size 21/334/5 63002401

Available heat insulation components

360 Heat insulation for burner door panel 24mm thick 63004169
370 Insulation ring for burner door panel 10mm thick 63004170
380 Washer DIN9021 A6,4 A3K (x)
390 Sheet metal screw DIN7981 C ST6,3x25 A3T (x)

400 Sealing rope 14x1650 GP 63020965
0 Gasket compound brown (cartridge 310 ml) for gluing sealing rope 63014361

(x)

Mounting material for boiler block G115 WS

63031288

Contents:
1 countersunk bolt M8x16 Ms
2 spacer sleeves R3/8"x39
2 hexagon nuts ISO4032 M10 8 A3K
8 washers DIN125 A10.5 A3K
4 washers DIN126 9
4 hexagon bolts ISO4017 M8x25 8.8
4 hexagon nuts DIN6923 M8 8.8 A3K
4 hexagon bolts ISO4017 M10x25 8.8
2 hexagon bolts DIN6921 M10x65 8.8
1 hexagon bolt ISO4017 M6x12 8.8A3K
2 washers DIN9021 A6.4 A3K
2 sheet metal screws DIN7981 C ST6,3x25 A3T

0

B-KIT G115 WS

63029762

Contents:

1 Supply manifold G115"US"
1 elbow 90DEG11/4
1 elbow 90DEG 3/4 I/A
1 double nipple R11/4-11/4NPTx75
1 boiler drain 3/4
1 relief valve 3/4Mx3/4F 30PSI
1 temperature/pressure gauge 1 / 4 NPT
1 Bolt set B-Kit G115"US"
1 adjustable boiler foot M10x51 packed

Item no. Description Part number

G115/3 WS

3 section

G115/4 WS

4 section

G115/5 WS

5 section

Tab. 13 Boiler block and burner door

11

Parts lists

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

47

Fig. 46 Boiler block and burner door

7747102153-00-Kesselblock und Brennertür G125 WS NA

21

23

24

133

133

180

180

52

53

22

21

370

380

390

280

270

260

250

350

300

290

310

330

340

320

350

400

360

22

52

55

54

80

142

141

140

130

131

132

120

70

70

91

90

10

81

51

57

50

50

60

150

160

70

230

220

200

210

190

7747102153-00-Boiler block and burner door G115 WS NA

11

Parts lists

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

48

Boiler jacket (Æ Fig. 47)

Item no. Description Part number

G115/3 WS

3 section

G115/4 WS

4 section

G115/5 WS

5 section

A complete outer panel set consists of: front panel, rating plate, front insulation, cross-member, 2 side panels, boiler insulation, retaining spring, front
hood, rear hood, rear panel and fixings.

Available outer panel components

10 Front panel assembly G115 63046570
18 Logano G115 name plate 7747025928
20 Front insulation G115 63025265
40 hexagon bolt ISO4017-M8x12-8.8 (x)
50 Cross-member G115 63029209
60 Hexagon nut DIN555 M8 5 (x)
70 Washer DIN126 9 (x)
80 Side panel 445mm long 63029945 - ­80 Side panel 565mm long - 63029946 ­80 Side panel 685mm long - - 63029947
85 Sheet metal screw C ST3,9x13 A3T (x)
90 Flathead bolt 3,9x9,5 A3T (x)
95 Plug-in fuse (x)

100 Boiler block insulation G115 7747014842 - ­100 Boiler block insulation G115 - 7747014843 ­100 Boiler block insulation G115 - - 7747014844
110 Retaining spring for securing heat insulation 7747016084

120 Front hood G115/S105/S105U 63029948
125 Cover panel 300x160 cover front 63016429
130 Rear hood assembly G115 "US" 63029949 63029950 63029951
140 Rear panel G115/G115U 63036024
145 Rear panel insulation 63025264
150 Cable clamp 07060754
160 Washer DIN432 10,5 St A3E (x)
170 Hexagon nut DIN555 M10 5 (x)

(x)

Panel fixings G115, GC115, G134

05180842

Contents:
17 flathead bolts ea. 3.9x9.5-A3T
3 sheet metal screws C-St3,9x13-A3T
Oval-headed screw DIN7985-M6x16-4.8-A3T
2 push-fit catches
4 hexagon bolts ISO4017-M8x12-8.8
1 hexagon nut DIN555 M8 5
4 washers DIN126 9
4 washers DIN432 10.5 St A3E
4 hexagon nuts DIN555 M10 5

Tab. 14 boiler jacket

11

Parts lists

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

49

Fig. 47 boiler jacket

7747102154-00-Verkleidung G125 WS NA

85

80

40

70

40

70

40

70

80

60

50

85

20

100

10

18

90

130

120

90

90

125

90

140

145

150

170

160

170

160

90

95

110

7747102154-00-boiler jacket G125 WS NA

12

Circuit diagrams

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

50

12 Circuit diagrams

Fig. 48 Circuit diagram 1

Riello F3 or F5 Series Oil Burner Wiring

Riello F3 or F5 Series Oil fired Burner

Using a L7248C1006 Aquastat –

1) Connect room thermostat or end switch wiring to the “T T” terminals of the L7248C aquastat.

2) Connect incoming 120 Vac power source to L1 on the L7248C aquastat .

3) Connect a neutral to “L2” on the L7248C aquastat.

4) Connect black wire in wire harness to terminal B1 of the L7248C (the “L” terminal on the Riello burner terminal block).

5) Connect white wire in wire harness to terminal B2 of the L7248C (the “N” Terminal on the Riello burner terminal block).

6) Connect green wire to ground screw on L7248C (the ground connection on Riello Burner).

7) Red wire is not used in this application.

LN X

Terminal strip on Riello Burner

White wire

Red wire- NOT USED IN

THIS APPLICATION

Black wire

Ground

Quick connect

plug

Green wire

T

B1

Honeywell

Operating

Aquastat

(L7248C1006)

N

Neutral

Ground

T

Thermostat,

aquastat, or end

switch,

C1

C2

L1

B2

L2

Fuse

L

Hot

Service

Switch

Field wiring

Factory wired

Low Voltage

Field installed

WMO-1*)

*) Canadian installations: Install in series with start wire to the burner (phase).

12

Circuit diagrams

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

51

Fig. 49 Circuit diagram 2

Carlin EZ-1 HP Burner Wiring with L7248C Aquastat

T

B1

Honeywell

Operating

Aquastat

(L7248C1006)

Carlin EZ-1 Wiring Schematic -

The Carlin EZ-1 Burner is equipped with the 60200 Series Primary Control with pre-purge.

Using a L7248C Aquastat –

1) Connect room thermostat or end switch wiring to the T & T terminals of the L7248C Aquastat.

Note: DO NOT CONNECT ROOM THERMOSTAT TO THE T – T TERMINALS OF THE CARLIN 60200 Control!

2) Connect 120 Vac power source to L1 on the L7248C aquastat.

3) Connect neutral source to L2 on the aquastat.

4) Connect red wire from wire harness to L1 on the L7248C (the red/white wire on the Carlin 60200 Control).

5) Connect black wire from wire harness to B1 on the L7248C (the black wire on the Carlin 60200 Control).

6) Connect white wire from wire harness to B2 on the L7248C ( the white wire on the Carlin 60200 Control).

7) Connect green wire to ground screw on the L7248C and to the ground connection on the Carlin Burner.

8) Install a jumper wire on the T T terminals of the 60200 Control.

9) The pink wires from the Carlin “In line heater” may be connected to a constant 120Vac power source or the red/white wire and the white wire
in the Carlin 60200 Primary Control.

CCT 60200 Series Primary Control

Field

installed

jumper

Field wiring

Factory wired

Low Voltage

Field installed

Quick

connect

plug

White

Violet

Orange

Blue

Red/White

Black

T

F

T

F

A

A

CAD

Cell Eye

Red wire

Black wire

White wire

Green wire

Ground

Ground

T

Thermostat,

aquastat, or end

switch,

C1

C2

L1

B2

L2

Fuse

Service
Switch

N

NeutralLHot

WMO-1*)

*) Canadian installations: Install in series with start wire to the burner (phase).

12

Circuit diagrams

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

52

Fig. 50 Circuit diagram 3

Becket NX Burner Wiring

Becket NX Wiring Schematic -

With a L7248C1006 Aquastat –

1) Connect room thermostat or end switch wiring to the T T terminals of the L7248C Aquastat.

Note: DO NOT CONNECT ROOM THERMOSTAT TO THE “T T” TERMINALS OF THE R7184B OR 7505B PRIMARY CONTROL!

2) Connect 120 Vac power source to L1 on the L7248C aquastat.

3) Connect neutral source to L2 on the L7248C aquastat.

4) Connect the black wire in wire harness to B1 of the L7248C (the black wire on the R7184B or 7505B Primary Control).

5) Connect the white wire in wire harness to B2 of the L7248C (the white wire on the R7184B or 7505B Primary Control).

6) Connect the green wire in the wire harness to ground screw on the L7248C (the ground connection on the R7184B or 7505B Prima ry Control).

7) Install a jumper wire on the T T terminals of the R7184B or 7505B Primary Control.

Field wiring

Factory wired

Violet

Orange

Blue

Yellow

Black

Honeywell R7184B series Primary Control

or Beckett Genisys 7505B Primary Control

Low Voltage – Field

installed

T

T

A

A

Yellow

White

Burner Junction Box

Field installed

jumper

CAD

Cell

Green wire

Black wire

White wire

Quick

connect plug

Ground

T

B1

Honeywell

Operating

Aquastat

(L7248C1006)

Ground

T

Thermostat,

aquastat, or end

switch,

C1

C2

L1

B2

L2

Fuse

Service
Switch

N

NeutralLHot

WMO-1*

Red

*) Canadian installations: Install in series with start wire to the burner.

Index

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

53

Index

A

Aquastat.............................................................. 24

B

B-kit components ................................................... 7

Boiler output.......................................................... 8

Boiler room.......................................................... 10

Boiler type

............................................................. 8

Burner, notes on commissioning ............................ 30

C

Changing boiler hinges to left hand side ................. 15

Checking for leaks (CH system)

............................. 21

Cleaning heat exchanger

....................................... 36

Combustion air supply .......................................... 10

Commissioning

.................................................... 28

log

.................................................................. 33

Connecting power supply...................................... 27

Connecting the fuel supply .................................... 23

Connections

.......................................................... 8

Correcting burner faults........................................ 42

D

Dimensions............................................................ 8

Dirt trap

.............................................................. 19

E

Environment ........................................................ 10

F

Fitting B-kit.......................................................... 19

Fitting burner door panel ...................................... 27

Fitting cable ties................................................... 27

Fitting outer casing panels

.................................... 27

Fitting temperature sensor assembly...................... 26

Fitting the controls

............................................... 25

Flow temperature

................................................... 8

Fuel .................................................................... 10

H

Heat exchanger baffles, checking position .............. 29

Heating circuits, multiple ...................................... 43

Heating emergency stop switch

............................. 34

I

Installation diagram .............................................. 20

Installation examples ............................................ 43

Installation of boiler drain ..................................... 20

L

Log, commissioning .............................................. 33

Logs, servicing and maintenance

............................ 39

M

Main isolating cock ............................................... 29

Main isolating valve............................................... 29

Maintenance, regular

............................................ 35

Master switch ...................................................... 34

Mounting the adjustable feet ................................. 16

Mounting the burner

............................................. 23

O

On/Off switch ...................................................... 34

Onsite testing pressure ......................................... 21

Operating Conditions

............................................ 10

Operating conditions

.............................................. 9

P

Pack contents ........................................................ 7

Parts lists ............................................................ 45

Permissible operating pressure................................ 8

Power supply voltagePower supply

........................ 11

Pressure testing nozzle ......................................... 30

Pressure/temperature gauge ............................ 28, 37

R

Raising flue gas temperature ................................. 30

Rated heat output .................................................. 8

Removing burner door panel.................................. 12

Removing burner hood

.......................................... 24

Removing heat exchanger baffles ........................... 36

Replacing rope gasket........................................... 36

Reversing boiler door

............................................ 15

Routing burner cable ............................................ 26

S

Safety.................................................................... 3

Safety valve

.............................................. 19, 21, 28

Shutting down

..................................................... 34

Site test pressure ................................................. 11

Specifications

........................................................ 8

T

Temperature/pressure gauge ............................ 28, 37

Topping up

.......................................................... 37

Transporting with boiler trolley/sack truck .............. 13

Troubleshooting ................................................... 42

W

Wall clearances .................................................... 14

Water quality

....................................................... 11

Wet cleaning

........................................................ 37

Notes

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

54

Notes

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

55

Bosch Thermotechnology Corporation
50 Wentworth Avenue
Londonderry, NH 03053
Tel. [phone]
Fax [phone]
www.buderus.net

Products manufactured by
Bosch Thermotechnik GmbH
D-35573 Wetzlar
www.buderus.de

Bosch Thermotechnology Corporation reserves the
right to make changes without notice due to continu­ing engineering and technological advances.