CB product info

Flexible heating specialist

The CB high efficiency boilers are the best of both worlds. No compromises. An aesthetically pleasing design combined with a robust stainless steel heat exchanger with 10 years warranty. Installation cannot be easier: the CB units have a very compact and lightweight wall mounted design that makes it fit in even the smallest basements. The flip over display gives plenty of space to service the units and the control has many integrated options, like a cascade manager up to 16 units. Whether an outdoor reset, 0-10V, ModBus or OpenTherm connection is preferred: the CB units have standard connections available for all of them.

Features

✓ Extreme low NOx emission of less than 24 mg/kWh (2 credits under BREEAM 2018 NOx limit)
✓ Seasonal efficiency (Part L) close to 96%
✓ Stainless steel heat exchanger
✓ Compact wall hung boiler
✓ Full modulation of 5:1
✓ Cascade up to 16 boilers
✓ Natural or LP gas
✓ Easy installation and maintenance
✓ Also available as water heater

State of the art PCB technology

✓ Clear display with graphic design
✓ Modbus connection standard
✓ Easy to read fault history
✓ Internet and wifi connection optional

 

Popular specifications

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
Dimensions (h x b x d) mm 845 x 440 x 530
Weight empty kg 77 79 83 86
Flue connection concentric pipe mm 100/150 100/150 100/150 N/A
Flue connection twin pipe mm 100 100 100 150
Nominal input (Net) kW 15,4 – 81,7 18,6 – 97,3 23,6 – 119,4 35,0 – 145,3
Nominal input 80/60°C kW 14,9 – 79,1 18,0 – 94,2 22,9 – 115,7 33,9 – 140,9
Efficiency (input 30%, return 30°C) % 108,2% 108,4% 108,4% 108,6%
Nitrogen Dioxide Emission (NOx) mg/kWh 23,1 21,3 23,9 20,1

 

General

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
Dimensions (h x w x d) mm 845 x 440 x 530
Water content (estimated) liter 5,0 6,5 8,3 10,4
Weight (empty) kg 77 79 83 86
Supply /return connection (boiler) inch  1” 1” 1” 1 ¼”
Gas connection inch  ¾” ¾” ¾” 1”
Flue connection twin pipe mm 100 100 100 150
Flue connection concentric pipe mm 100/150 100/150 100/150 N.A.
Gas appliance type  – B23(P), C13, C33, C43, C53, C63, C83, C93

Heating

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
Nominal input net G20 kW 15,4 – 81,7 18,6 – 97,3 23,6 – 119,4 35,0 – 145,3
Nominal output G20 (80-60) kW 14,9 – 79,1 18,0 – 94,2 22,9 – 115,7 33,9 – 140,9
Nominal output G20 (50-30) kW 16,0 – 85,1 19,5 – 101,8 24,7 – 124,7 36,4 – 151,0
Nominal output G20 (37-30) kW 16,6 – 88,4 20,2 – 105,5 25,6 – 129,7 38,0 – 157,8
Turndown ratio 1:x 5 5 5 4
Efficiency (input 30%, return 30°C) % 108,2% 108,4% 108,4% 108,6%
Seasonal efficiency (Part L) % 95,6% 95,7% 95,7% 95,8%
Seasonal space heating energy efficiency (ɳs) % 92,4% 92,6% 92,7% 92,9%

Gas consumption

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
G20 m3/h 1,6 – 8,5 1,9 – 10,2 2,5 – 12,5 3,7 – 15,3
G31 m3/h 0,6 – 3,2 0,8 – 3,9 1,0 – 4,8 1,6 – 15,7
Gas supply pressure nominal G20 mbar 20
G31 mbar 37

Emission

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
NOx class 6
Nitrogen Dioxide Emission (NOx) 1 mg/kWh 23,1 21,3 23,9 20,1
Flue gas temperature at combustion air temperature of 20 °C °C 60 – 90
Available pressure for the flue system2 Pa 200
Noise level dB(A) 65,8 68,0 67,8 73,0
1 These numbers are used to assign two credits according to the BREEAM 2018 standards
2 Maximum allowed combined resistance of flue gas and air supply piping at high fire

Installation

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
Maximum supply temperature °C 90
Resistance water heater ΔT = 20 °C mWc 4,0 3,4 3,8 3,6
Resistance water heater ΔT = 25 °C mWc 2,8 2,3 2,5 2,4
Pressure boiler bar 1,0 – 6,0

Electric

Boiler model   CB-85-CH CB-105-CH CB-125-CH CB-155-CH
Maximum power consumption W 190 280 280 280
Power supply V/Hz 230 / 50
Protection class IPX4D