Technical data

FriwaMidi

up to 50 l/min (as per SPF LK 1)*

Application range

• Domestic hot water preparation operating on the principle of a

flow-type water heater

The CE-conformity of the module has been certified

according to DIN EN 60335 and

SVGW / ACS.

Application range

• in solar thermal systems

• in systems with solid fuel boilers, oil or gas boilers

• connection to a buffer tank

• as double cascade up to 100 l/min (as per SPF LK 1)*

*For information on design data, see page 230

Operating data

Max. pressure

Maximum operating temperature

Min. flow rate

Max. flow rate as per SPF LK 1*

Transmission performance 1 as per SPF LK 1*

Kvs value

primary: 3 bars,

secondary: 10 bars

95 °C

2 l/min

50 l/min

121 kW

primary: 4.1

secondary: 3.4

Equipment

Check valve

Circulation line

Heat exchanger

Sensors

Controllers

primary: 2 x 200 mm wc

optional

40 Plates, Type B25

primary: 1 x Pt1000

secondary: 2 x Pt1000

1 x Flow meter

FC3.10

Nominal diameter

Connections

Circulation line

Width

Centre distance, prim.

Centre distance, sec.

Height

Installation length

Depth

DN 20 (3⁄4")

primary:

11⁄2" external thread

secondary:

1" external thread

1" ext. thread

602 mm

120mm

100mm

795 mm

757 mm

298 mm

Materials

Valves and fittings

Gaskets

Insulation

Heat exchanger

Brass

AFM34/EPDM

EPP

Solder: Copper

Plates + connecting pieces:

Stainless steel

Coating (optional): Based

on silica

Differential pressure diagram

Dimensions

Mounting example

Cascade with 2 basic modules (item no. 6405510) and

pipe set for cascade (item no. 64042942)

F

r

i

w

a

M

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d

i

01/2020 • Printed in Germany

240

PAW GmbH & Co. KG • 31789 Hameln • Germany • Phone: +49-5151-9856-0 • Fax: +49-5151-9856-98 • info@paw.eu • www.paw.eu