Buderus Logano G124X II/SP Manuel utilisateur

Setting the Standard for Efﬁciency

High Efﬁciency: Full line of Atmospheric Gas Boilers

Flexible, Corrosion Resistant GL-180M Cast Iron

Limited Lifetime Warranty

Electronic Ignition, 3" Thermal Insulation on all Models

74,000 to 542,000 BTU/Hr Input

Comfortable. Efﬁcient. Intelligent Heating.

G124X | G234X | G334X

Atmospheric Gas Boilers

G124X | G234X | G334X

Manufactured with the patented

Buderus GL-180M ﬂexible cast

iron, the sections are tightly

joined together and sealed by

proﬁled, beveled steel push

nipples, ensuring a long life.

GL-180M Gray Cast Iron:

Buderus GL-180M silicone injected, gray cast iron has excellent corrosion

resistance, exceptional casting characteristics and 40% greater ﬂexibility and

elasticity as well as high thermal conductivity. Buderus developed the special

substances that are impregnated during the casting process to improve the

mechanical properties of cast iron. The graphite precipitates into smaller, modiﬁed

ﬂakes which produce GL-180M cast iron with 40% greater elasticity and a high

silicone barrier for corrosion protection. Gray cast iron obtains its superior

material characteristics primarily from a high carbon (graphite) and silicone

content. Additional elements further enhance the properties of the GL-180M.

The graphite appears in two different forms in the microstructure: nodular form

producing excellent tensile strength and great elasticity and graphite ﬂakes

producing excellent corrosion resistance against acidic combustion products.

Manufactured with the patented Buderus GL-180M ﬂexible cast iron, the sections

are tightly joined together and sealed by proﬁled, beveled steel push nipples,

ensuring a long life.

Special compounds provide a

gas-tight seal for safe and efﬁcient

operation. And, thanks to the

GL-180M cast iron’s amazing

ﬂexibility, this boiler resists thermal

shock under conditions of rapid

temperature change.

Intelligent Heating – By Design

Buderus, the world leader in hydronic

heating technology, manufactures the

highest quality boilers based on

centuries of experience. With its

innovative design and quality

manufacturing, a Buderus boiler will

outlast and out-perform virtually any

other residential hot water system in

the world.

The G124X, G234X and G334X

are designed in Europe, where fuel

costs are signiﬁcantly higher and

environmental regulations are more stringent. Established in 1731, Buderus uses

state-of-the-art techniques in the design and manufacturing of its boilers.

Manufactured with the patented Buderus GL-180M ﬂexible cast iron, the sections

are tightly joined together and sealed by proﬁled, beveled steel push nipples,

ensuring a long life. Special compounds provide a gas-tight seal for safe and

efﬁcient operation. And, thanks to the GL-180M cast iron’s amazing ﬂexibility, this

boiler resists thermal shock under conditions of rapid temperature change. All

models are atmospheric vented.

Superior Design

Quality

Manufactured by Buderus, the world leader in cast iron boiler design and

production, the G124X, G234X and G334X construction consists of ﬂexible GL-

180M cast iron, designed to resist thermal shock for long life and a high silicone

cast iron surface for excellent corrosion resistance. They each have staggered

contoured ﬁns for optimum heat transfer and efﬁcient operation, high precision

castings with steel push nipples, sectional construction, and deluxe, heavy gauge

blue enameled jacket for a clean ﬁnished appearance. There is a full 3" of thermal

insulation for minimal standby heat loss coupled with an integral draft diverter for

low proﬁle. All models are easily converted to propane, and they also offer low

emissions with Premixed Burner Technology. Durable, quiet and efﬁcient, Buderus

boilers are designed for many years of trouble-free operation.

Efﬁciency

The G124X, G234X, and G334X Series Boilers are available in natural gas or easily

converted to propane and feature AFUE ratings up to 84.8% for high efﬁciency

and top performance. Stainless steel premixed factory tested burners allow for low

emissions, and a full 3" of thermal insulation virtually eliminate standby loss and

stack temperature losses. Buderus boilers are designed for a long life, providing

efﬁciency and durability for the homeowner that is unsurpassed by the competition.

Stainless Steel Premixed Burners

Low emissions with Premixed Burner Technology

Factory tested for natural gas operation

All models easily convert to propane

Complete burner tray is easily removed

Durable, quiet, efﬁcient and designed for long life

Flueways of Buderus boilers have

a gas tight seal thanks to a tongue

and groove section design and

elastic high temperature resistant

sealing material. This seal is fully

pressed into the groove during

assembly.

G234X Boiler

G124X | G234X | G334X

Panel Radiators

Upgrade your system for added comfort to your home!

Once you have a Buderus boiler you can add a Buderus indirect ﬁred hot water

tank, an optional Buderus Logamatic control or both. The Logamatic control

maximizes your comfort and fuel savings, and it will also accommodate specialized

heating applications such as radiant ﬂooring. Combined, this premium heating

system will provide years of exceptional comfort and economy...for little more than

the cost of a standard replacement component.

The Buderus Logamatic Controls,

designed to work with most Buderus

boilers, signiﬁcantly increase the

efﬁciency of your heating system.

The Controls maintain a comfortable

environment by measuring indoor

and outdoor temperatures in order to

automatically and effectively regulate

the temperature of the boiler. This

allows the boiler to use less fuel while

keeping your home exactly as warm as

you want it. The Logamatic Controls

also include the convenience of a

setback feature for nighttime as well

as domestic hot water priority. So, no

matter how hard the heating has to

work on a cold day, there will always

be hot water for showers. All control

functions are able to be customized

by you. Additionally, the Buderus

Logamatic R2107 is designed with a

built-in self diagnostic system to aid in

maintenance and reduce service costs.

The Buderus indirect

ﬁred domestic hot

water tanks are

designed to ﬁt any

specialized need.

To maximize space,

the G234X/G334X

can be paired with

Buderus vertical

ST-tanks. These tanks increase boiler

efﬁciency, system longevity and

minimize the need of service calls,

when paired with a Buderus boiler.

The tanks are designed with many

features to aid in maintenance, such

as easy access ports for interior

cleaning, extra thick Magnesium anode

rods (or optional electrical anode) and

Thermoglaze® interior tank coating to

protect against corrosion and aid in

cleaning. To help maximize efﬁciency the

tanks are so well insulated against heat

loss, they lose less than a ¼˚ F per hour.

Domestic Hot Water Tanks Convenient Logamatic Control

A cleaner, quieter, and more

comfortable source of heat ...

Buderus manufactures a whole range

of high-quality radiators to precisely

match your taste in decor and

satisfy heating requirements. Panel

radiators produce two types of heat:

radiant and convected. Radiant heat

like the sun warms objects rather

than just the air, creating a greater

sense of warmth faster and at lower

room temperatures. Forced hot air

or ﬁn-tube baseboard systems only

produce heat that warms the air

(i.e., convected heat). The design of

Buderus radiators eliminates noise,

... no more clanking and hissing.

Our radiators require less space

than baseboard enabling greater

ﬂexibility with furniture placement. And

Buderus’ unique styling also minimizes

areas where dust and dirt can collect.

G124X

Model G124X/18 G124X/25 G124X/32

Performance Data

Input Rate BTU/Hr 74,000 103,000 132,500

DOE Heating Capacity BTU/Hr 61,400 85,500 110,000

Net IBR BTU/Hr 53,000 75,000 96,000

AFUE % 84.3 84.2 84.6

Piping Connections

Pressure Drop @ 20° F

∆T (In WC) 18.8 22.9 32.2

B-Vent II Connection Size 5" 5" 6"

Boiler Supply & Return 1" 1" 1"

Gas Connection ½" ½" ½"

Min. Relief Valve 62 lb./hr. 86 lb./hr. 110 lb./hr.

Physical Dimensions

Number of Burner Tubes 2 3 4

Boiler Width 23½" 23½" 23½"

Height 33⅛" 33⅛" 33⅛"

Dimension A 8¾" 5⅛" 1⅝"

Dimension B 7¼" 8⅛" 9"

Dimension C 4½" 5⅛" 5⅛"

Dimension D 15" 13½" 13½"

Dry Weight (lbs.) 229 240 337

Water Content (gal.) 2.4 2.9 3.4

MEA 100-96-E

G3-1103-58

Approval Numbers

Quick-FitTM Modular Piping System

The Quick-Fit System takes only

minutes to connect and includes all

the piping, valves, circulating and

control elements to feed both radiant

ﬂoor heating zones and conventional

high-temperature heating zones. Not

only will a Quick-Fit system save time

and money on any boiler installation, it

also eliminates incorrect valve or motor

installations. Additionally it ensures

a clean, ﬁnished and professional

installation. The Quick-Fit system

consists of three main components, the

Quick-Mix Mixing Station for radiant

ﬂooring applications, the Quick-Pump

Station for high-temperature zones and

the Quick-Header Manifold for multi-

temp heating systems. The Quick-

Fit System can be used to connect

virtually any piping arrangement.

G124X boilers will stack on Buderus

LT160, LT200, and LT300 tanks.

G234X G334X

MEA 217-98-E

CRN No# 7169.7C

G3-0106-184

Approval Numbers

Model G234X/38 G234X/45 G234X/55 G234X/64

Performance Data

Input Rate BTU/Hr 160,000 187,000 228,000 266,000

DOE Heating Capacity BTU/Hr 130,000 154,000 188,000 219,000

Net IBR BTU/Hr 113,000 134,000 163,000 190,000

AFUE % 84.3 84.1 84.8 84.3

Piping Connections

Pressure Drop @ 20° F ∆T (In WC) 16.1 22.1 25.3 28.9

Vent Size 7" 7" 7" 8"

Damper Included? Yes Yes Yes Yes

Gas Connection ¾" ¾" ¾" ¾"

Physical Dimensions

Number of Burner Tubes 3 3 4 5

Boiler Width (W) 259∕16" 259∕16" 29⅛" 32¾"

Height 38½" 38½" 38½" 38½"

Dry Weight (lbs.) 487 487 562 684

Water Content (gal.) 6.1 6.1 7.1 8.2

Vent 7" 7" 7" 8"

Rear View Side View Front View Top View

28¾

13¾

Vent

25 ¾"

40 ¾"

1½" Supply

1" Storage Tank

1½" Return

½" Drain

Allow 33" Access

for Servicing

2" Minimum

6" Minimum

G234X G334X

Model G334X/73 G334X/92 G334X/116 G334X/132

Performance Data

Input Rate BTU/Hr 301,000 378,000 476,000 542,000

DOE Heating Capacity BTU/Hr 249,000 314,000 396,000 451,000

Net IBR BTU/Hr 217,000 273,000 344,000 392,000

Comb. Eff. (%) 82.7 83.1 83.2 83.2

Piping Connections

Pressure Drop @ 20° F ∆T (In WC) 32.1 44.1 54.2 60.2

Vent Size 8" 9" 10" 10"

Damper Included? Optional Optional Optional Optional

Gas Connection ¾" ¾" ¾" ¾"

Physical Dimensions

Number of Burner Tubes 5 6 7 8

Boiler Width (W) 34¾" 41¾" 48¾" 56"

Height 40¾" 40¾" 40¾" 40¾"

Dry Weight (lbs.) 758 930 1,093 1,265

Water Content (gal.) 9.2 11.4 13.5 15.6

Vent 8" 9" 10" 10"

Rear View Side View Front View Top View

28¾

13¾

Vent

25 ¾"

40 ¾"

1½" Supply

1" Storage Tank

1½" Return

½" Drain

Allow 33" Access

for Servicing

2" Minimum

6" Minimum

MEA 217-98-E

CRN No# 7169.7C

G3-0106-184

Approval Numbers

G124X | G234X | G334X: Atmospheric Gas Boilers

Buderus boilers are manufactured to the highest standards. The

boilers are designed with premixed burner technology for low

emissions, a factory tested gas operation, and are ﬁeld converted

to propane.

To aid in cleaning and servicing the burner tray is completely

removable. All Buderus boilers are durable, quiet, efﬁcient and

designed for long life.

Special Features G124X G234X G334X

Integral draft diverter for low proﬁle ■ ■ ■

AFUE ratings over 84% ■ ■

Two stage ﬁring capabilities ■

30 PSI relief valve, drain and P&T gauge ■ ■ ■

Standard non-combustible base ■ ■

Approved for 2" side clearance to combustibles ■ ■ ■

All rear tappings for clean, ﬁnished appearance ■ ■ ■

Plug-in connection for vent damper ■ ■ ■

Boiler sizes 18 to 64 units completely assembled, jacket installed ■ ■

Combined slow opening gas control valve ■ ■ ■

Approved for installation on combustible ﬂooring ■ ■ ■

Standard Honeywell control components ■ ■ ■

1" Supply and return tappings, ½" NPT gas connection ■

1½" Supply and return tappings, ¾" NPT gas connection ■ ■

Can be stacked on the LT Tanks ■

G334X Boiler

Subject to change without notice

Part Number 44499023 06/09

Bosch Thermotechnology Corp.

50 Wentworth Avenue Londonderry, NH 03053

Tel: (603) 552-1100 Fax: (603) 584-1681 www.buderus.net

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