16 | LWZ304-404 SOL www.stiebel-eltron.com
INSTALLATION
Installation
Connecting the function module and the cylinder module
hydraulically
26_04_01_0549
3
2
1
1 Door lock
2 Fixing screws of the lower front panel
3 High limit safety cut-out retaining bracket
A door lock is located above the door of the function module.
Push the door lock at the front upwards.
Pull the door lock backwards and then upwards to unhook
the door lock.
Open the function module door.
Undo the fixing screws from the lower front panel.
Remove the lower front panel.
To make yourself room for the assembly, you can temporarily
unhook the high limit safety cut-out retaining bracket.
Undo the screws on the high limit safety cut-out retaining
bracket.
Unhook the high limit safety cut-out retaining bracket from
the slots, pull it out of the appliance and hook it into the
same slots, but this time from the outside.
D0000053516
1 2
3
1 DHW flow
2 Heating flow
3 Common return
The hydraulic connection between the function and cylinder
module is provided by three pipes: DHW flow, heating flow and
common return.
Make sure that the caps have been removed from the pipes.
5.3.1 How the push-fit connectors work
!
Material losses
Never install the push-fit connectors in the DHW line.
Never install the push-fit connectors to the solar flow or
solar return connections. Only install the push-fit con-
nectors in the heating circuit.
!
Material losses
Tighten the screw cap of the push-fit connector by hand.
Never use a tool.
!
Material losses
Support sleeves are required when using plastic pipes.
The push-fit connectors are equipped with a retainer with stain-
less steel serrations and an O-ring seal. The push-fit connectors
also have a "twist and secure" function. Simply turning the screw
cap by hand will secure the pipe in the connector and push the
O-ring against the pipe to seal it.
Making the push-fit connection
The connector must be in its relaxed position before the pipe is
inserted. In this position, there is a small gap between the screw
cap and connector body.
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3
1
2
4
1 Retainer
2 Screw cap
3 Gap between screw cap and connector body
4 Connector body
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