STIEBEL ELTRON 22 11 39, Operating And Installation

6

WPKI HKV 

Part no: 22 11 42

The distributor, with 2 connection pairs respectively to the top and 
bottom, is designed for the connection of two heating circuits in 
conjunction with the heating compact installations WPKI HK and 
WPKI HKM.

Specific features of the WPKI HKM

Three-way mixer

A bypass can be used to reduce the flow temperature by mixing in return 
water. The bypass can be infinitely adjusted with the adjusting screw 

1

. For that, undo locking screw 

2

 approx. 1 mm. Tighten the locking 

screw again after completing the adjustment. The mixer is regulated via 
the servomotor. In the delivered condition, both mixer and bypass are 
closed, and the locking screw is tight.

1

2

C26_03_01_0593

Servomotor

The angle of rotation is electrically
limited to 90°. Upon reaching its 
end stops, the drive will be 
switched off and switched to 
zero volt. The servomotor can 
be switched to manual control via the rotary selector on the casing.

Servomotor specification

Rated voltage

230 V 50/60 Hz

Connection

cable 3 x 1.5 mm², 2 m long

Rotational direction

optional acc. to wiring

Position indicator

reversible scale plate

Runtime

140 s

Protection class

II (double insulated, without earth 

conductor)

Protection

IP 40

Ambient temperature

0 °C to 50 °C

Test symbol

CE

26_03_01_0601

Description

The heating compact installations 

WPKI HK

 and 

WPKI HKM

 are 

specifically designed for buffer cylinders SBP 200 E, SBP 400 E and SBP 
700 E. In conjunction with the pipe set WPKI RB, they offer heating 
contractors a clear and easy means of connecting the heating system to 
the SBP...E buffer cylinder.
The return ball valve contains a gravity brake to prevent unintentional 
natural circulation. The gravity brake can be opened manually by turning 
the handle approx. 45° to its end stop.

The heating compact installation 

WPKI HK

 is designed to operate in an 

unmixed heating circuit.

The heating compact installation 

WPKI HKM

 is designed to operate in a 

heating circuit with a three-way tee mixer with servomotor.

Specification

Type

WPKI HK

WPKI HKM

Part no.

22 11 39

22 11 40

Dimensions     HxWxD

420x250x246 mm

Internal diameter

DN 32

Top connection

G 1 ¼” female

Lower connection

G 1 ½” male

Centres

125 mm

Temperature in use

up to 110 °C

Operating pressure

0.6 MPa (6 bar)

kVs value

11

6.4

Standard delivery

The 

WPKI HK

 and the 

WPKI HKM

 are factory-sealed and comprise:

–  circulation pump DN 32, height 180 with 2 m connecting cable
–  three-way ball valve with manual gravity brake in the return, 

complete with handle

–  three-way ball valve in the flow, complete with handle
–  two thermometers, ø 63 mm, display range 0-120 °C  

(red or blue facia ring for identifying the flow and return)

–  pump ball valve with flange and 1 ½ “ male (only WPKI HK)
–  three-way mixer with variable bypass (only WPKI HKM)
–  stabiliser between the flow and return line
–  return pipe
–  EPP insulation
–  2 fixing screws with washers and rawl plugs (in the separate pack)

Special accessories

SPB 200 E 

Part no: 18 54 58

SPB 400 E 

Part no: 22 08 24

SPB 700 E 

Part no: 18 54 59

WPKI 5

 (for heat pumps without central heating circulation pump)

Part no: 22 08 30

WPKI 6 

(for heat pumps with central heating circulation pump)

Part no: 22 08 31

The heat pump compact installation is required when fitting the pipe set 
WPKI RB to the buffer cylinder SBP....E.

WPHW 25 

Part no: 22 11 35

WPHW 32 

Part no: 22 11 36

The low loss header is designed to separate the volume flow between 
the heat source and the consumer.  
Recommended for the operation of 2 heating circuits without buffer 
cylinder.

WPKI RB 

Part no: 22 11 41

The pipe set is designed for fitting to the buffer cylinder SBP....E and 
either the heating compact installations WPKI HK or WPKI HKM.

The installation (water and electrical work) and commissioning, as well 
as the maintenance of these compact installations, must only be carried 
out by a qualified contractor in accordance with these instructions.

Subject to the relevant system, observe the operating and installation 
instructions of the components of which the system comprises.

Keep these operating instructions safely and pass them on to any new 
user, should the equipment change hands. Let your contractor check 
their content in conjunction with any maintenance or repair work.

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Connection diagram

Night

Automatic