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Flexible Energy Efficient Solutions
Comfortable. Efficient. Intelligent Heating.
Buderus
GB312 Series
Natural Gas Condensing Boiler
High Efficiency—93.1%
Thermal Efficiency
Modulating Natural Gas
Pre-mix Burner for Extremely
Quiet Operation
Lightweight, High Performance
Aluminium Heat Exchanger
for Maximum Heat Transfer
Quick and Easy Installation
305 to 944 MBH Output:
6 Models Available
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Related Manuals for Buderus GB312 Series
Summary of Contents for Buderus GB312 Series
- Page 1 Buderus [ Air ] GB312 Series [ Water ] Natural Gas Condensing Boiler [ Earth ] [ Buderus ] Flexible Energy Efficient Solutions High Efficiency—93.1% Thermal Efficiency Modulating Natural Gas Pre-mix Burner for Extremely Quiet Operation Lightweight, High Performance Aluminium Heat Exchanger...
- Page 2 GB312 Series GB312: Efficiency and Performance Buderus knows it’s important to keep costs as low as possible yet still maintain Efficiency in Operation high efficiencies, low emissions, and exceptional performance. That’s why we Actual Boiler Efficiency VS. Return have worked hard to bring all of these qualities together in the GB312 gas fired Temperature at Full/Partial Load condensing boiler from Buderus.
- Page 3 Suitable for sealed combustion or open to ensure total safety, durability, and outstanding performance year after year. vented installations The Buderus GB312 boiler offers a range of outputs from 305 MBH up to ❚ Simple to service and maintain 955 MBH. Whether you’re planning projects for private multi-unit housing or ❚...
- Page 4 GB312 with AM10: Outdoor reset, DHW and multi-zones with relay panel GB312 Clearance Requirements Multi-Zone Relay Panel* Inlet Water AM10 Outside Sensor DHW Tank Aquastat Check Valve Expansion Tank Circulation Pump - Heating Zone DHW Load Pump Recirculating Pump Boiler Pump Shut-off Valve (reccomended) Thermostatic Head...
- Page 5 Natural Gas Condensing Boiler Complete Your System Once you have a Buderus boiler, you can add a Buderus indirect fired hot water tank, or an optional Buderus control — or both. In addition to maximizing comfort and fuel savings, optional Logamatic control will accommodate specialized heating applications such as radiant flooring or multiple boilers.
- Page 6 GB312 Series Model GB312/90 GB312/120 GB312/160 GB312/200 GB312/240 GB312/280 Performance Data Gas Input (MBH) 328.3 440.5 588.3 732.6 880.7 1,028.8 Gross IBR Output (MBH) Input at Minimum Capacity Output at Minimum Capacity Net IBR Rating (MBH) Thermal Efficiency 93.1% 92.8% 92.5%...
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Page 7: Technical Specifications
GB312 Seriess Natural Gas Condensing Boiler Technical Specifications Venting Guidelines This boiler requires a flue system approved for Category IV (condensing, positive Basic Water Quality Guidelines pressure: to ANSI Z21.13/CSA4.9.) It can be direct vented horizontally or vertically. Combustion air can be obtained from the space or via sealed combustion. Consult Water hardness your local codes for details. - Page 8 All Buderus products are designed to meet strict safety and environmental regulations. Buderus boilers are quick and easy to install and will outlast and outperform virtually any other commercial hot water heating system. They are designed for easy access and service.