Buderus 124X Series, G124X-18, G124X-25, G124X-32 Instruction

5 643 983 – 3/2005 - updated 8/2007

Instruction for High Altitude

Conversion Kit for 124X Series Boilers

This kit and instruction are for converting the
G124X Series Boilers for use at elevations
above 8500ft.

REQUIRED INPUT RATES

G124X-18
66,660
BTU/H

THE CONVERSION SHALL BE
PERFORMED BY A
MANUFACTURER’S AUTHORIZED
REPRESENTATIVE IN
ACCORDANCE WITH THE
REQUIREMENTS OF THE
MANUFACTURES, PROVINCIAL OR
TERRITORIAL AUTHORITIES
HAVING JURISDICTION AND IN
ACCORDANCE WITH THE
REQUIREMENTS OF THE Can/CGA­B149.1 or Can/CGA-B149.2
INSTALLATION CODES.

G124X-25
92,700
BTU/H

G124X-32
119,250
BTU/H

Notice: This manual must be retained for future reference!

5 643 983 – 3/2005 - update 8/2007

Parts list for converting the boilers for high
altitude installations

This kit contains the following parts:

Main Gas Burner orifice and gaskets

Conversion data plate to be filled out ands affixed to the
appliance

Conversion instructions

TO CONVERT THE BOILER FOR USE AT HIGH
ALTITUDE, THE FOLLOWING INSTRUCTIONS
SHALL BE ADHERED TO.

The boiler shall be converted prior to installation

1. Remove Control Access Panel from the boiler, fig 1.

2. Remove main gas orifices and washers from the burner
assembly, fig 2.

3. Install new orifices and washers supplied with kit. Ensure
orifices are the proper size for your boiler application per
the following

4. Fill out the required information on the conversion plate
and affix the plate to the outside of the boiler jacket as
close as possible to the existing rating plate.

5. If the boiler has not been placed into operation, follow the
installation instruction in “the installation, Operation and
Maintenance Manual” supplied with the boiler.

tables:

Fig. 1

Model

G124X-18 1.80mm
G124X-25 1.75mm
G124X-32 1.70mm

Model

G124X-32 2.70mm

Orifice Size Kit Number Orifice Size Kit Number

Orifice Size Kit Number Orifice Size Kit Number

Orifice Sizes — Propane

0-8500 8501-12000

0-8500 8501-12000

Elevation in feet

G124x18P85
G124x25P85I
G124x32P85I

Orifice Sizes — Natural Gas

Elevation in feet

Standard

Version

I

Manifold Pressure

In inch wc

Model G124X-18 G124X-25 G124X-32
Natural 3.6 3.5 3.6
Propane 9.8 10.3 10.0

1.75mm

1.70mm

1.65mm

mm08.2mm58.281-X421G
mm07.2mm57.252-X421G

2.65mm

Fig.2

G124X18P12000I
G124X25P12000I
G124X32P12000I

G124X18N1200
G124X25N12000
G124X32N12000

Tel: [phone] • Fax: [phone]

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Buderus

50 Wentworth Avenue

Londonderry, NH 03053

www.buderus.net

Buderus reserves the right to make changes without

notice due to continuing engineering and technological

advances