STIEBEL ELTRON WPL 09 ICS classic - Fitting the Push-Fit Connectors; Flow and Return Connection; Siting

INSTALLATION
Installation
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10.1.1 Transport using a transport aid
To facilitate transport, you can fit a transport aid to the r.h. side
panel of the appliance (see chapter "Appliance description/ Fur-
ther accessories").
 Remove the r.h. side panel of the appliance (see chapter "Fit-
ting the appliance casing").
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1 Transport aid
 Fit the transport aid to the appliance frame using the screws
provided.
 Tilt the appliance through about 45° onto its r.h. side.
 Lift the appliance carefully.
 Transport the appliance to the installation location.
10.2 Siting
Note
There are fixing screws at the bottom of the appliance
frame to secure the front and side panels.
 When siting the appliance, observe the air discharge
direction.
 Position the appliance on the prepared substrate.
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 Push the sliding blocks supplied under the adjustable feet,
so the appliance can be moved more easily to the required
position.
 Observe minimum clearances (see chapter "Preparations/
Minimum clearances").
 Level the appliance vertically by turning the height-adjusta-
ble feet.
10.3 Flow and return connection
!
Material losses
In cooling mode, condensate can form when the dew
point temperature is undershot.
 Take suitable measures to prevent the formation of
condensate.
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6
5
4
3
1
1 Manual air vent valve
2 "Safety valve drain" connection
3 "Heat exchanger flow" connection
4 "Heat exchanger return" connection
5 "Heating return" connection
6 "Heating flow" connection
7 Condensate drain outlet
 If only one return connection is used, seal off the one that is
unused.
Cooling with a buffer cylinder
 Install an immersion/contact sensor in the heating flow,
downstream of the buffer cylinder.
10.4 Fitting the push-fit connectors
Note
The plastic push-fit connectors are not suitable for instal-
lation in the DHW line.
 Install the push-fit connectors only in the heating
circuit.
Material losses
Tighten the screw cap of the push-fit connector by hand.
Never use a tool.
Material losses
To ensure the push-fit connector is held securely, pipes
with a surface hardness>225HV (e.g. stainless steel)
must have a groove.
 Using a pipe cutter, cut a groove (depth ap-
prox.0.1mm) at a defined distance from the end of
the pipe.
- Pipe diameter 22mm: 17±0.5mm
- Pipe diameter 28mm: 27.5±0.5mm
How the push-fit connectors work
The push-fit connectors are equipped with a retainer with stain-
less steel serrations and an O-ring for sealing. The push-fit con-
nectors 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.