STIEBEL ELTRON HM Trend - Troubleshooting

OPERATION
Appliance compatibility
4 | HM (S)| HM(S) Trend www.stiebel-eltron.com
!
WARNING Injury
 For safety reasons, only operate the appliance with
the casing closed.
2.3 Test symbols
See type plate on the appliance.
3. Appliance compatibility
The appliance can be operated in conjunction with the following
air | water heat pumps:
- HPA-O 3-8 CS Plus
- HPA-O 7-13 (C)(S) Premium
- WPL 13/18 E, WPL 13/18 cool
- WPL 15-25 A(C)(S)
- WPL 33 HT(S)
- WPL 07-17 ACS classic
- WPL 19-24 I, A
4. Appliance description
The appliance is a hydraulic module for air/water heat pumps
installed outdoors and is installed by wall mounting inside the
thermal envelope of the building. Connection to the water side
of the appliance is from below. Connections are provided on the
appliance for the heat pump flow, the heating system flow and
for the heat exchanger for DHW heating. A further connection is
intended for the drain hose from the safety valve.
The following are integrated into the appliance: a diaphragm ex-
pansion vessel with 24litre capacity, a high efficiency [HE heating
circuit pump sized in line with heating output, an electric emer-
gency/booster heater and a WPM heat pump manager.
Particular feature of the HM(S) with ASL-HM
The ASL-HM connector block is equipped with additional connec-
tions for the heat pump return, the heating system return and the
return from the heat exchanger for DHW heating. In addition, the
connections are equipped with ball shut-off valves to facilitate
installation.
4.1 WPM heat pump manager
The heat pump manager is responsible for the processes that
control and regulate the heat pump.
5. Maintenance and care
!
Material losses
Maintenance work, such as checking the electrical safety,
must only be carried out by a qualified contractor.
A damp cloth is all you need to care for the plastic parts. Never
use abrasive or corrosive cleaning agents.
We recommend regular inspection (to establish the current con-
dition of the system), and maintenance by a qualified contractor
if required (to return the system to its original condition).
6. Troubleshooting
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate. The type plate is located at the front
top, on the right or left hand side of the casing.
Sample type plate
Montageanweisung beachten! Dichtheit geprüft!
Made in Germany
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1
26_03_01_1570
1 Number on the type plate