Gas Wall Mounted Combination Boiler

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