INSTALLATION
Electrical connection
14 | HPG-I (C)S Premium www.stiebel-eltron.com
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 main body.
D0000088519
1
2
3
4
1 Retainer
2 Screw cap
3 Gap between screw cap and main body
4 Main body
D0000088520
Pipe Ø 28mm
Depth of insertion A max. 44mm
!
Material losses
Pipe ends must be deburred.
f Always use a pipe cutter to trim pipes.
f Push the pipe past the O-ring into the push-fit connector
until it reaches the prescribed insertion depth.
f Finger-tighten the screw cap as far as it will go against main
body. This secures the push-fit connection.
Undoing the push-fit connection
If the push-fit connectors later need to be undone, proceed as
follows:
f Turn the screw cap anti-clockwise until there is a narrow gap
of approx. 2mm. Press the retainer back with your fingers
and hold on to it.
f Pull out the inserted pipe.
D0000088521
10. Electrical connection
10.1 General
WARNING Electrocution
f Before working on the appliance, isolate it from
the power supply at the control panel.
Note
The leakage current of this appliance can be >3.5mA.
Note
In conjunction with the WPM heat pump manager, use
the HSM mixer servomotor.
Connection work must only be carried out by a qualified contractor
and in accordance with these instructions.
You must have permission to connect the appliance from the rel-
evant power supply utility (PSU).
f See chapter "Preparation/ Electrical installation".
10.2 Electrical connection
Note
f Fill the heating system before making the electrical
connection (see chapter "Installation/ Heating water
connection").
Terminals are located at the appliance control panel under the
top cover.
For all connections, use appropriate cables in accordance with
local regulations.
f Remove the cover (see chapter “Troubleshooting/ Removing
the casing parts”).
f Remove the rear thermal insulation piece.
f Route the cables through the cable entry in the front thermal
insulation piece.
f Then route the electrical cables through the strain relief fit-
tings.
f Check that the strain relief fittings are working as intended.
f Route all connecting cables and sensor leads through the
entry provided in the back panel.
10.2.1 Compressor and electric emergency/booster heater
Appliance
function
Effect of the electric emergency/booster heater
Mono energet-
ic operation
If the dual mode point is undershot, the electric emergency/
booster heater safeguards both the heating operation and the
provision of high DHW temperatures.
Emergency
mode
If the heat pump shuts down due to a fault, the heating output
is covered by the electric emergency/booster heater.
You can choose between two connection options. The compressor
connection remains single-phase.
Connection option Connection type
A separate connections for compressor and
emergency/booster heater
B connection for compressor and emergency/
booster heater using a 5-core cable
To Next Page
Loading...
