Shunt Group

LK 422 Manifold Shunt Tmax

•

Suitable for left-hand and right-hand mounting

P (kPa)

70

60

50

40

30

20

10

V1

LK Manifold Shunt Tmax is used in systems with a main pump.

The shunt unit can be mounted directly to LK Manifold RF from

the left or right. The shunt unit is fitted as standard with a

constant thermostat controlled feed temperature as well as an

automatic speed controlled pump for reduced energy consump-

tion and quieter operation. The guideline capacity of this shunt

unit is a maximum of 130 m2 floor heating surface. The capacity

is dependent on heat requirement, laying procedure etc.

LK 422 can be mounted directly onto the manifold from the right

or left. A manifold supply pipe for use when mounting to the left

of the manifold is supplied. When fitting from the right, shorten

the supply pipe by about 50 mm, reposition the thermometers

and the pump through 180°.

TECHNICAL DATA

Voltage

1 phase 230V AC, -15 % / +10 %,

50 Hz, PE

Max. working pressure

0.6 MPa (6 bar)

Max. differential pressure

0.1 MPa (1 bar)

Working temperature

Primary: Min. 5 °C/Max. 90 °C

Secondary: Min. 30 °C/Max. 65 °C

Ambient temperature

Max. 70 °C

Thread standard

G - male thread,

G - female thread

Protection type

IP44

Media

Water - Glycol mixture max. 50%

Ethanol mixture max. 30%

Circulating pump

Grundfos UPM3 AUTO 15-70

Material valve body

Nickel-plated Brass EN 12165

CW617N

Material pipe

Supply pipe: Stainless steel EN

1.4404

PUMP CHARACTERISTICS

CONSTANT PRESSURE 1

Cp3

Cp2

Cp1

CC III

CC II

CCI

CONSTANT PRESSURE 2

CONSTANT PRESSURE 3MAX

CC MAX

VF

V2

156

0

0

5

10

15

20

25

30

35

40

Q (l/min)