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Main product image of 119,000 BTU Output Cast Iron Oil Boiler (No Burner)
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119,000 BTU Output Cast Iron Oil Boiler (No Burner)

Brand:
Buderus
SKU:
G115WS5-NO-BURNER
Rating:
(1)
Q&A:
(5)
119,000 BTU Output Cast Iron Oil Boiler (No Burner)
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G115WS5-NO-BURNER has been discontinued
Discontinued May 14, 2026
This product was discontinued by the manufacturer.
BTU Input
161000
105000
Burner Brand
None

This item replaces: G115WS5-KNOCKDOWN

Schematic Feature!
Replacement Parts

Product Highlights

Product Highlight: Fuel Type
Oil
Product Highlight: System Type
Hydronic (Water)
Product Highlight: BTU Input
161000 BTUs
Product Highlight: Supply Size
1-1/4"
Product Highlight: Height (Inches)
34.5" Height
Product Highlight: Width (Inches)
23-1/2" Width

Description

Heating equipment must be installed, commissioned, and serviced by a licensed and qualified professional in accordance with manufacturer instructions, applicable codes, and industry standards. Manufacturers do not accept warranty or technical support requests from homeowners or unlicensed individuals. All warranty and technical inquiries must be initiated by the licensed professional responsible for the installation.

This product title reflects the boiler's IBR Net Output Rating when using a chimney vent burner. No burner is included.
  • Choosing burner 7738000106 for this boiler produces a 136,000 BTU DOE Rating and 119,000 BTU IBR Rating.
  • Choosing burner 7738000104 for this boiler produces a 120,000 BTU DOE Rating and 104,000 BTU IBR Rating.

The R2107 Logamatic Control is not included and can be purchased separately.

The Buderus G115WS boiler is based on the highly successful G115, the World's best selling boiler. The G115WS has been redesigned and reengineered to extract and deliver more heat from every fuel dollar, and now has higher outputs at less cost per BTU. Acknowledged as the leader in high-efficiency, low emission hydronic heating, Buderus offers innovative design and quality manufacturing with exceptional efficiency and performance.

Features:
  • Redesigned for Higher Outputs and Efficiency
  • High Efficiency - AFUEs Above 86%
  • Flexible, Corrosion Resistant GL-180M Cast Iron
  • Full Swing Burner Door for Excellent Serviceability
  • Chimney Vent from 85,000 to 136,000 BTU/Hr Output
  • Direct Vent from 74,000 to 120,000 BTU/Hr Output


Specs

Burner Brand:

None

BTU Input:

161000

Fuel Type:

Oil

Capacity (Boiler):

12.9 Gal

DOE Rating:

136000 (Chimney)

120000 (Direct)

IBR Rating:

119000 (Chimney)

104000 (Direct)

Efficiency:

87% (Chimney)

86% (Direct)

Supply Size:

1-1/4"

Return Size:

1"

Vent Size:

5"

Height (Inches):

34.5"

Width (Inches):

23-1/2"

Length (Inches):

33-3/8"

System Type:

Hydronic (Water)

Weight (lbs):

476 lbs

Contact

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You May Also Need

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G115WS5

Replacement Parts

SKU: G115WS5-NO-BURNER

Brand: Buderus

Search Parts:
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Product Image of no image
Boiler block G115 WS
63036029
Sorry, we don't currently sell this item. Request This Item
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Countersunk bolt DIN 7991 -M 8 x 16 -Ms
N/A
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Gasket D 41.7x55x1.5mm Afm 34, Left, 86159710
86159710
Buderus
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Gasket D33x44x2mm
63005462
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Plug G 1
05317712
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Stud bolt, M10x65 5.6 as per drawing
05555070
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Hexagon nut ISO4032-M10-8-A3K
N/A
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Washer DIN115-A10.5-A3K
N/A
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Reducing Nipple G1"Xg3/4, 63027607
63027607
Buderus
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Sensor sleeve PMW -3 SEE (4 1/2")"US"
7747022364
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Anchor bolt set, M8x555mm
05127580
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Flue connection complete
05354074
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Feed-in Connector Assembly 1 1/4-npt1, G115/g115 Ws
63028061
Buderus
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Seal 55x41.7x1.5 mm
05752540
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Heat exchanger baffle
05347089
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Angle Profile Rail 5 Section Everp, 7747000020
7747000020
Buderus
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Washer DIN126-9
N/A
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Product Image of no image
Hexagon bolt ISO 4017 -M8x25-8.8
N/A
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Hexagon nut DIN 6923-M8-8.8-A3K
N/A
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Hinge bracket G105/G115
05327033
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Product Image of no image
Washer DIN125-A10.5-A3K
N/A
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Product Image of no image
Hexagon bolt ISO4017-M10x25-8.8
N/A
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Hexagon bolt ISO4014-M10x65-8.8
N/A
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Washer DIN125-A10.5-A3K
N/A
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Boiler feet M10x51mm complete
05236440
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Flue pipe sealing collarDN130 complete
05354010
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Flue silencer DN130 complete, without condensate drain; higher sound absorption
05074020
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Flue silencer D130 with an adaptor of 100mm length, with condensate drain; lower sound absorption
05074022
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Flue pipe sealing collar assy. DN130 (stepped)
05354030
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Spacer sleeve R3/8"x39
N/A
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Nice Boiler

This boiler has heated my shop all winter with no problems. It is easy to install, and easy to clean out.
AE
OH
15 years ago
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Product Q&A

5 Questions
5 Questions
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Q: For direct venting with this boiler, what burner will I need to get? Is there a direct vent or power vent kit that will work with this boiler?

Asked by Jeremy 11 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

Yes, the direct vent burner kit is SKU:7738004852.

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Q: what do I need to maintain and clean the boiler, I am a contractor.

Asked by John 11 years ago

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Verified Author and ReplyVerified Reply- Supplyhouse Staff

Please refer to page 35 of the installation manual for information on maintenance: http://s3.supplyhouse.com/product_files/G115WS5-install.pdf

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Q: What model burner do you suggest for this unit ?

Asked by Dan 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

We recommend a Riello F5 burner.

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Q: Does Buderus make a direct vent or power vent option for an oil fired boiler

Asked by 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

There is a direct vent option for Buderus G115WS boilers. It requires a different burner.

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Q: Can I use this oil boiler with my existing power venter (SWG-HD5)?

Asked by David 16 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

According to Field Controls, the manufacturer of your power venter, the SWG-HD5 will work with this boiler.

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