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SUPRAPUR KBR 120-3 A
Junkers SUPRAPUR KBR 120-3 A - User Manual
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Wärme fürs Leben
Für den F
achmann
Warmth for life
For professionals
Technical guide
Gas condensing boiler
SUPRAPUR
Single boiler:
Cascade:
KBR
120-3
A
MKB
240-3
A
KBR
160-3
A
MKB
320-3
A
KBR
200-3
A
MKB
400-3
A
KBR
240-3
A
MKB
480-3
A
KBR
280-3
A
MKB
560-3
A
Output range from
28
kW to 560 kW
6 720 645 817 (2010/09)
2
Table of Contents
Main Page
Default Chapter
2
Table of Contents
2
1 System Schemes
4
System Scheme 1: Unmixed Heating Circuit, Low Loss Header
4
System Scheme 2: Unmixed Underfloor Heating Circuit, Low Loss Header
6
System Scheme 3: Mixed Heating Circuit, DHW Circuit, Low Loss Header
8
System Scheme 4: One Unmixed Heating Circuit, One Mixed Heating Circuit, Low Loss Header
10
System Scheme 5: Two Mixed Heating Circuits, One DHW Circuit, Low Loss Header
12
System Scheme 6: One Unmixed Heating Circuit, Two Mixed Heating Circuits, Low Loss Header
14
System Scheme 7: One Unmixed Heating Circuit, Three Mixed Heating Circuits, Low Loss Header
16
System Scheme 8: Two Mixed Heating Circuits, Two DHW Circuits, Low Loss Header
18
System Scheme 9: One Unmixed Heating Circuit, One DHW Circuit, Low Loss Header, Cascade
20
2 Specification
22
Appliance Parameters
22
Single Appliance Suprapur KBR
22
Factory-Prepared Cascade Suprapur MKB
23
Dimensions and Minimum Clearances
24
Single Appliance Suprapur KBR
24
Factory-Prepared 2-Boiler Cascade MKB
25
Installed Dimensions
27
Single Appliance Suprapur KBR
27
Factory-Prepared Cascade MKB
28
Pressure Drop, Water Side
29
Boiler Efficiency
30
Standby Loss
30
Flue Gas Temperature
31
Conversion Factor for Alternative System Temperatures
31
Appliance Layout
32
4 Product Description
33
Gas Condensing Boiler with Aluminium Heat Exchanger
33
Types and Output
33
Possible Applications
33
Benefits in Brief
33
Characteristics and Special Features
34
Gas Burner
34
Burner and Burner Control Unit
34
Burner Function
35
Delivery Method
35
5 Engineering Information and Sizing
36
The Heat Source
36
Operating Conditions
36
Water Quality
36
Important Hydraulic System Components
39
Hydraulics for Maximum Utilisation of the Condensing Effect
39
Underfloor Heating System
39
Diaphragm Expansion Vessel
39
Condensate Drainage
41
Condensate Drain from the Condensing Boiler and the Flue
42
Condensate Drain from a Moisture-Resistant Chimney
42
6 Regulations and Operating Conditions
43
Extracts from Regulations
43
Fuels
43
Operating Conditions
43
Combustion Air
44
Combustion Air Supply
44
Siting Combustion Equipment
45
Sound Insulation
45
Antifreeze
45
7 Accessories / Services
46
Neutralising Systems
46
Neutralising System No. 1605
46
Neutralising System No. 1606
47
Condensate Lifting System No. 1620
47
Pumps
48
Dirt Traps
48
Low Loss Header
48
Boiler Safety Set
49
Safety Equipment to DIN-EN 12828
49
Shut-Off Set Combined with Check Valve
50
Boiler Flue Connection
50
Ventilation Air Connection Bend
50
Cleaning Tool
50
Services
50
8 Heating Controls
51
Selection Aids for Controller Application
51
Overview of the BUS-Regulated Controller Functions
52
Weather-Compensated Controllers
53
Accessory for 2-Wire BUS Controller
56
Cascade Switching Module (0-10 V Interface for Systems with Direct Digital Control (DDC))
58
Accessories, Weather-Compensated Controller - Remote Control
58
Controller Accessories - Outside Temperature Sensors
59
9 DHW Heating
60
General
60
DHW Cylinders Series SK
65
DHW Cylinders Series SE
69
10 Installation Accessories
72
Connection Accessories
72
Cascade Accessories
73
Other Accessories
74
Flue Systems
75
Flue System
75
Requirements
75
Plastic Flue System
76
Flue Gas Parameters Suprapur - Single Boiler KBR
77
Flue Gas Parameters Suprapur - Factory-Prepared 2-Boiler Cascade
77
Mkb
77
Sizing Plastic Flue Systems (Open Flue)
77
Flue Systems for Open Flue Operation
78
General Information for Open Flue Operation
78
Ventilation Air/Flue Gas Line
79
Open Flue Routing Via Flue Inside a Chimney Shaft
80
Balanced Flue Routing, Vertical Via the Roof (B 23 )
82
Open Flue Routing Via Flue over a Facade (B 23 )
84
Flue Systems for Balanced Flue Operation
86
General Information for Balanced Flue Operation
86
Balanced Flue Routing Via Flue Inside a Chimney Shaft Whilst Drawing in Combustion Air in Countercurrent (C 93 )
88
Balanced Flue Routing Via Flue Inside a Chimney Shaft Whilst Drawing in Combustion Air through a Separate Pipe (C 53 )
90
Visual Overview of Flue Accessories
92
Flue Accessories Ø 125 MM
92
Flue Accessories Ø 160 MM
97
Flue Accessories Ø 200 MM
103
Flue Accessories Ø 250 MM
109
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Junkers SUPRAPUR KBR 120-3 A Specifications
General
Category
Boiler
Model
SUPRAPUR KBR 120-3 A
Heating Capacity
120 kW
Type
Condensing
Fuel Type
Gas
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