Electric boiler series SB, 450 - 1200 kW

SB 450 - 1200 kW

The largest in the series of Varmeteknikk's robust and reliable element boilers.

750-1200 kW are supplied for 3-phase power connection in 3x400 V or 3x690 V as well as 450-750 kW in 3x230 V (other dimensions). Other voltages can be supplied on request.

The regulator has a simple and user-friendly interface, and regulates the boiler output in 30 steps.

An outdoor sensor can be supplied as an option for optimal economic operation, where the boiler temperature is compensated for the outdoor temperature.

The boilers have digital and analog inputs and outputs for external control and monitoring, so that the boiler can be visualized and controlled from the customer's
SD system/top system. For an additional fee, the boilers can be supplied with a bus coupler for MODbus or BACnet communication.
The boiler can also be controlled directly from the heat pump.

The heating technology boilers are supplied as standard with PN16 flanges.

Construction data

Construction pressure

Construction temperature

Max operating temperature

Pipe connection type

Pipe connection side

Draining and expansion

Vannvolum

Min. water flow

Max water flow

6 bar

110 °C

100 °C

Flens DN125 - PN16

Bak

G 2"

310 l

1,3 l/s, 4,7 m3/h

21 l/s, 75 m3/h

Regulatory data

Regulation area

Regulation step

Step time up

Step time down

Form of regulation

5 - 100 °C

30

1-250 s

1-20 s

PI

The boilers can also be delivered with a connection box on the left side.

This series can also be supplied in a 16 bar version.

The 230 V versions of the 450-600 kW boilers are delivered with a side connection and two connection boxes.
See data for the largest models SB 450 - 1200 kW.

Power connection

Number of connection boxes

Connection page

Number of cables per box

Number of terminals per phase

Cable cutter

Clamping load max

N leader

1

Right (default)

4

35 - 240 mm2

380 A Al - 425 A Cu

In the

Control current

Control voltage

Control current course

Control current fuse

230 Vac - 50 Hz

10 A

Ø5x20 mm, 10 A

Signals for external control

Control signals

Start/stop

Temp. set point

Max step/power

External potential-free NO contact

0-10 Vdc = 0-100 °C

0-10 Vdc = 0-30 trinn

Reading

Drift

Alarm

Set point

Temp

Step/Effect

Internal potential-free NO contact

Internal potential-free changeover contact

0-10 Vdc = 0-100 °C

0-10 Vdc = 0-30 trinn

SB2450-2600. These 230 V models are only available in Norway.

All measurements in mm.

SB4750-41200, SB6750-61200

All measurements in mm.

Data sheet PDF

Operating instructions PDF

Additional equipment

Outdoor sensor

Outdoor sensor for outdoor temperature compensated heating curve.
Dim. 60x60x30 mm.
Connection 2-wire min. 0.5 mm2. Max cable length 50 m.

BUS communication

Transmits all the boiler's standard digital and analog signals to the desired protocol (MODbus TCP, MODbus RTU (RS485) or BACnet IP).

Technical data

Type	NRF no.	Effect (kW)	3 x 230 V Current (A)	3 x 400 V Current (A)	3 x 690 V Current (A)	Net weight (kg)
SB 2375	8205361	375	941	-	-	450
SB 2400	8205362	400	1004	-	-	450
SB 4375	8205373	450	-	541	-	450
SB 4400	8205374	400	-	577	-	450
SB 4450	8205375	450	-	650	-	450
SB 4500	8205376	500	-	722	-	450
SB 4600	8205377	600	-	866	-	450
SB 6375	8205391	375	-	-	314	450
SB 6400	8205392	400	-	-	335	450
SB 6450	8205393	450	-	-	377	450
SB 6500	8205394	500	-	-	418	450
SB 6600	8205395	600	-	-	502	450