Gas Wall Mounted Combination Boiler
Item No.: | B2 series |

Features & Benifits
* Fashionable LCD display
* Weekly timing and temperature setting program
* 18 protective functions
* Floor heating mode with 60℃ temp limit protection
* Energy saving and comfort modes available for different needs.
* Magnetic filtering devices ensure normal operation in bad quality area.
Technical Data
Model | SD18-B2, SP18-B2 | SD24-B2, SP24-B2 | Unit |
Gas Type | NG, LPG, Town Gas |
| |
Dimension(L*H*W) | 725X403X325 | 725X403X325 | mm |
C.H. System | |||
Nominal heat input | 20 | 26.3 | KW |
Nominal heat output | 18.4 | 23.7 | KW |
Min.input for CH | 8.5 | 11.2 | KW |
Min.output for CH | 7.1 | 9.3 | KW |
Heat Efficiency | 90.1 | 90.1 | % |
CH System Working Pressure | 0.05~0.3 | Mpa | |
Max. Heating Temperature | 90 | ℃ | |
Adjustable CH flow Temp.range | 40~85(Floor heating 35~60) | ℃ | |
Power supply | 220V/50Hz | 220V/50Hz |
|
Protection Class | IPX4D | IPX4D |
|
Expansion Vessel Volume | 8 | 8 | L |
Expansion Vessel Pre-charge Pressure | 0.1 | 0.1 | Mpa |
Heating Area(For reference only) | 60~150 | 60~220 | M2 |
Applicable Water Tap Number | 1 | 2 |
|
NWT(boiler only) | 36 | 38 | kgs |
DHW System | |||
Max. Working Pressure | 0.6 | Mpa | |
Min. Working Pressure | 0.03 | Mpa | |
Continuous DHW Production △T=25℃ | 10.3 | 13.6 | kg/min |
Adjustable DHW flow Temp.range (±3℃) | 35~60 | ℃ | |
Min DHW flow | 2.5 | kg/min | |
DHW limited flow rate | 7.3 | 10 | kg/min |
Gas Pressure | |||
Natural Gas | 2000 | 2000 | Pa |
LPG | 2800 | 2800 | Pa |
Connection | |||
CH water outlet | 3/4" |
| |
DHW inlet | 3/4" |
| |
DHW outlet | 1/2" |
| |
Cold water inlet | 1/2" |
| |
Gas inlet | 3/4" |
| |
Pump delivery height | 5/6(adjustable) | m | |
Flue length | 1~4.25(90ºbend=0.85M straight pipe, if the pipe is less than 1m, flow regulator is needed) | m |