Technical data

FriwaMaxi

up to 77 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 154 l/min (as per SPF LK 1)*

*For information on design data, see page 231

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

77 l/min

187 kW

primary: 5.6

secondary: 5.2

Equipment

Check valve

Circulation line

Heat exchanger

Sensors

Controllers

primary: 2 x 400 mm wc

optional

60 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 25 (1")

primary: 2" external

thread

secondary: 11⁄4" external

thread

1" ext. thread

602 mm

120mm

100mm

795 mm

769 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. 6406510) and

pipe set for cascade (item no. 64042952)

F

r

i

w

a

M

a

x

i

01/2020 • Printed in Germany

242

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