GB162 overview

Our GB162 boiler is perfect for both large domestic and commercial applications.

This boiler has outputs of 50, 65, 80 and 100kW, with the ability to cascade up to 800kW as part of a multi-boiler 'cascade' system up to 800kW.

Its compact dimensions make it especially suitable for installations where space is restricted, and, for larger heat demands, the GB162 can be easily combined in any combination of 2 to 8 boilers either in-line or back-to-back, using the Bosch cascade kits.

GB162 GB162 GB162
GB162 GB162 GB162

Features & Benefits

Can automatically modulate its output down to 30% or less in order to precisely match the demand for heat
Cascade outputs up to 800kW with tailor made frame kits to suit
Any combination of 1 to 8 boilers can be connected either in-line (TL) or back-to-back (TR)
Extremely compact space-saving cascades (400kW in just 1m²)
Cascaded boilers can be sequenced to come into and out of operation when required.
Ultra low NOx emission levels
GB162 80kW and 100kW models are registered on the Carbon Trust’s ECA scheme (Enhanced Capital Allowance)
Compatible with intelligent, modular Energy Management System controls and BMS interfaces
Intuitive user controls
Cascade kit includes: Mounting frames, support legs, main gas pipe, flow and return headers (reversible for either left or right orientation), low loss header, boiler connecting pipe work, full insulation

Technical Details

GB162 50kW GB162 65kW GB162 80kW GB162 100kW
Part number 7 736 700 642 7 746 900 822 8 747 024 8 8 747 025 0
ErP Efficiency Rating
A
A
N/A
N/A
Seasonal Efficiency to Part L2B 95.9 95.5 95.7 96.1
Rated heat output at 80/60°C (kW) 46.6 60.5 80 94.5
Rated heat output at 50/30°C (kW) 49.9 65 84.5 99.5
Rated maximum net heat input (kW) 47.5 62 82 96.5
Dimensions (mm) height x width x depth 1414* x 520 x 465 1414* x 520 x 465 1414* x 520 x 465 1414* x 520 x 465
Low energy modulating pump group available
Solar Compatible
Weather and load compensated control **
Load managing cascade sequencing control **
Secondary heating circuit sensor, Pump & valve **
Simple building management interface **
Plate heat exchanger accessory available
NOx rating at 0% oxygen, dry (mg/kWh) 27 28 37 39
Maximum Operating Pressure (bar) 4 4 4 4
Lift weight (kg) 70 70 70 70
80/125mm maximum flue length (mm) 7,700 7,700 N/A N/A
100/150mm maximum flue length (mm) 20,000 20,000 18,000 18,000

*Height with pump group

**Available via control accessories to be selected depending on heating system design

Related Accessories

Flashing Kits Part number
Pitched roof flashing kit (100mm & 125mm dia)
Pitched roof flashing kit (100mm & 125mm dia) 7 716 191 091
Flat roof flashing kit (100mm & 125mm dia.)
Flat roof flashing kit (100mm & 125mm dia.) 7 716 191 090
Flue Part number
90° bend (100/150mm dia.)
90° bend (100/150mm dia.) 7 716 191 098
1m flue extension - non-cutable (100/150mm dia.)
1m flue extension - non-cutable (100/150mm dia.) 7 716 191 097
1m flue extension - cutable (100/150mm dia.)
1m flue extension - cutable (100/150mm dia.) 7 716 191 096
45° bends - pair (100/150mm dia.)
45° bends - pair (100/150mm dia.) 7 716 191 099
Flue support bracket - 3 pack (100/125mm dia.)
Flue support bracket - 3 pack (100/125mm dia.) 7 716 191 102
Pitched roof flashing (100/150mm dia.)
Pitched roof flashing (100/150mm dia.) 7 716 191 100
Flat roof flashing (100/150mm dia.)
Flat roof flashing (100/150mm dia.) 7 716 191 101
Clamp with EPDM seal (100/150mm dia.)
Clamp with EPDM seal (100/150mm dia.) 7 716 191 103
0.5 flue extension - cutable (100/150mm dia.)
0.5 flue extension - cutable (100/150mm dia.) 7 716 191 095
Horizontal flue kit (100/150mm dia.)
Horizontal flue kit (100/150mm dia.) 7 716 191 094
1m flue extension - cutable (80/125mm dia.)
1m flue extension - cutable (80/125mm dia.) 7 716 191 118
0.5 flue extension - cutable (80/125mm dia.)
0.5 flue extension - cutable (80/125mm dia.) 7 716 191 117
Horizontal flue kit (80/125mm dia.)
Horizontal flue kit (80/125mm dia.) 7 716 191 116
90° bend (80/125mm dia.)
90° bend (80/125mm dia.) 7 716 191 119
45° bends - pair (80/125mm dia.)
45° bends - pair (80/125mm dia.) 7 716 191 120
Vertical flue kit (100/150mm dia.)
Vertical flue kit (100/150mm dia.) 7 716 191 093
Flue support bracket - single (80/125mm dia.)
Flue support bracket - single (80/125mm dia.) T 000 082 131
Vertical flue kit (80/125mm dia.)
Vertical flue kit (80/125mm dia.) 7 716 191 115
Other Part number
4323 Modular Digital Control Unit
4323 Modular Digital Control Unit 7 747 310 525
FM441 Heating and DHW Control Module
FM441 Heating and DHW Control Module 3 000 485 0
4122 Control Unit with MEC2
4122 Control Unit with MEC2 3 000 893 4
MCM10 Cascade Sequencing Control (up to 4 boilers)
MCM10 Cascade Sequencing Control (up to 4 boilers) 7 746 900 847
FM442 Heating Circuit Control Module
FM442 Heating Circuit Control Module 3 000 486 7
4122 Control Unit without MEC2
4122 Control Unit without MEC2 3 000 907 8
FM443 Solar Module
FM443 Solar Module 7 747 300 910
BFU Remote Control Room Thermostat
BFU Remote Control Room Thermostat 3 000 224 3
FM457 4 Boiler Cascade Sequence Module
FM457 4 Boiler Cascade Sequence Module 3 000 905 7
FM456 2 Boiler Cascade Sequence Module
FM456 2 Boiler Cascade Sequence Module 3 000 904 3
EM10 BMS Interface for Single Boilers
EM10 BMS Interface for Single Boilers 5 016 995
MM10 Mixed Heating Circuit Module
MM10 Mixed Heating Circuit Module 3 000 845 3
GB Plate Heat Exchanger 65kW
GB Plate Heat Exchanger 65kW 7 733 600 014
GB Plate Heat Exchanger 50kW
GB Plate Heat Exchanger 50kW 7 733 600 013
Adapter for GB162 50kW and 65kW only (100/150mm dia.)
Adapter for GB162 50kW and 65kW only (100/150mm dia.) 7 746 901 750
Low loss header for single boiler installations (c/w insulation)
Low loss header for single boiler installations (c/w insulation) 8 920 097 2
GB Plate Heat Exchanger 80/100kW
GB Plate Heat Exchanger 80/100kW 7 733 600 016
Threaded Flange Set 2 1/2"
Threaded Flange Set 2 1/2" 7 736 700 487
WM10 Low Loss Header Module
WM10 Low Loss Header Module 3 000 845 8
Modulating Pump Group - Low Energy
Modulating Pump Group - Low Energy 7 746 901 876
Threaded Flange Set 4"
Threaded Flange Set 4" 7 736 700 964
Threaded Flange Set 3"
Threaded Flange Set 3" 7 736 700 963
Connection set when using pump group without cascade frame
Connection set when using pump group without cascade frame 5 584 552

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