Bosch UT-L 46 User Manual

Technical guide
Heating boiler
UNIMAT
UT-L
6 720 807 794(2013/04)EN

Bosch UT-L 46 Specifications

General

Brand	Bosch
Model	UT-L 46
Category	Boiler
Language	English

Summary

1 Oil/gas special boilers

1.4 Features and benefits

Highlights key features and advantages of the UNIMAT UT-L boilers.

2 Basic principles

2.1 Basic principles of condensing technology

Explains the fundamental concepts of condensing boiler technology.

2.2 Making optimal use of condensing technology

Provides guidance on maximizing the efficiency of condensing systems.

2.2.2 High standard seasonal efficiency [to DIN]

Explains factors contributing to high seasonal efficiency in condensing boilers.

3 Technical description

3.1 UNIMAT UT-L boiler

Provides an overview and functional principle of the UNIMAT UT-L boiler.

4 Burner

9 System examples

10 Fitting

11 Flue system

12 Condensate drain

1.4 Features and benefits

2.2 Making optimal use of condensing technology

2.2.1 Matching to the heating system

Discusses how to match condensing technology to the specific heating system design.

2.3 Economic viability considerations

2.3.1 Simplified comparison of conventional boilers and condensing boilers or boilers with condensing heat exchangers

Compares economic viability of conventional vs. condensing boilers.

3.1.1 Equipment overview

3.1.2 Function principle

Explains the operational mechanism and heat transfer process within the boiler.

3.2 UNIMAT UT-L boiler

3.3 Dimensions and specification for the flue gas heat exchangers

3.2.2 Function principle

3.2.2 Function principle

Explains how heat is recovered in the flue gas heat exchanger for improved efficiency.

3.5.4 Boiler efficiency, standard seasonal efficiency [to DIN] and standby loss

Boiler efficiency and standard seasonal efficiency [to DIN]

Explains boiler efficiency and standard seasonal efficiency.

4.3 Matched pressure-jet burners

4.3 Matched pressure-jet burners

Emphasizes the importance of matching burners for optimal combustion and low emissions.

5 Regulations and operating conditions

5.2 German Immissions Act (BlmSchG)

5.2.1 Table extracted from the 1st BlmSchV "Small and medium-sized combustion systems"

Presents emissions specifications from the 1st BlmSchV for combustion systems.

5.2.2 Information on flue gas tests pursuant to BlmSchV/TA Luft

5.3 Operating requirements

5.3.1 Operating conditions

Specifies the operating conditions required for UNIMAT UT-L boilers.

5.3.3 Corrosion protection in heating systems

Corrosion protection on the boiler water side

Addresses corrosion prevention measures on the boiler water side.

5.3.5 Guidelines for water quality

6 Sound pressure level from noise in the boiler system

7 Boiler control and control system

7.1 CFB 810 control unit with CME 930 auxiliary module

Details the CFB 810 control unit and its applications with CME 930 module.

7.2 CFB 930 and CFB 910 control units

7.5 BCO boiler control

7.5 BCO boiler control

Explains the BCO boiler control system for optimum boiler operation.

8 DHW heating

8.1 Systems for DHW heating

Discusses UNIMAT UT-L boilers for central DHW heating systems.

9.1.2 Control system

9.1.2 Control system

Details control system configurations using CFB control units.

9.2 Safety equipment to DIN-EN 12828

9.2.1 Requirements

Outlines the requirements for safety equipment according to DIN EN 12828.

9.2.2 Layout of safety components to DIN-EN 12828

9.2.2 Layout of safety components to DIN-EN 12828

Illustrates the layout of safety components according to DIN EN 12828.

9.3 Sizing and installation information

9.4 1-boiler system with UNIMAT UT-L boiler: boiler and heating circuit control unit

9.5 1-boiler system with UNIMAT UT-Lboiler: boiler and heating circuit control unit with hydraulic separation

9.6 1-boiler system with UNIMAT UT-L boiler: boiler circuit control unit

9.7 1-boiler system with UNIMAT UT-L boiler: boiler circuit control unit with hydraulic separation

9.8 2-boiler system with two UNIMAT UT-L boilers: boiler circuit control unit with hydraulic separation

9.9 1-boiler system with UNIMAT UT-L boiler with flue gas heat exchanger: boiler circuit control unit

9.10 1-boiler system with UNIMAT UT-L boiler with condensing heat exchanger: boiler circuit control unit with hydraulic separation

9.11 2-boiler system with UNIMAT UT-L boiler without flue gas heat exchanger and UT-L boiler with condensing heat exchanger: boiler circuit control unit with hydraulic separation

9.12 UNIMAT UT-L boiler with flue gas heat exchanger or condensing heat exchanger: return temperature raising

10.2 Design of installation rooms and combustion air supply

10.2.1 Installation location

Covers requirements for the boiler installation location.

10.3 Installation dimensions

10.4 Additional safety equipment to DIN-EN 12828

10.4.1 Safety equipment

Details the standard safety equipment assembly.

10.4.2 Boiler safety equipment assembly to DIN-EN 12828

10.4.2 Boiler safety equipment assembly to DIN-EN 12828

Describes the boiler safety equipment assembly according to DIN EN 12828.

10.5 Additional devices for sound insulation

11.1.2 Special information for flue systems of boilers with condensing flue gas heat exchangers

11.1.2 Special information for flue systems of boilers with condensing flue gas heat exchangers

12.2 Neutralising system NE 2.0

12.2.1 Installation