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3
Heating element temperature controller (TC)
The heating element temperature controller regulates the hot
water temperature during heating element operation. The maxi-
mum controller temperature is factory set to 65 °C (the controller
and the STL are installed together in a casing). Temperature set-
tings can be changed using suitable tools (see illustration).
Changes to this setting may be carried out by qualified personnel
only!
In automatic operation (activated via air temperature thermostat),
the water is heated by the heating element until the set value has
been reached (by the heat pump temperature controller). In con-
trast to heat pump operation only, a smaller amount of water is
heated up in order to minimise heating element operating peri-
ods. In continuous manual operation, the hot water is heated until
the set maximum temperature of the heating element has been
reached. The heating element may optionally be controlled via
an external switch (see Point 5.3 "Electrical Connection"). The
water is again heated until the set maximum temperature of the
heating element controller has been reached.
Heat pump temperature controller
Temperature control in the water cylinder and the regulation for
compressor operation is carried out by the temperature control-
ler. This controller measures the hot-water temperature via a
sensor and controls it in relation to the set value. The desired
temperature level (set value) is set via the rotary knob on the
control panel.
Air temperature thermostat
This thermostat sensor measures the hot-water heat pump tem-
perature directly upstream of the evaporator (air inlet tempera-
ture). If the temperature falls below the set value (8 ±1,5 °C,
dead-band value 3 K), hot water preparation automatically
switches from heat pump operation to heat element operation.
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Storage and Transport
3.1 General Information
The hot-water heat pump should generally be stored and trans-
ported wrapped up, upright and containing no water. If handled
carefully, the unit can be transported over short distances with a
max. tilt angle of 45°. Ambient temperatures between -20 and
+60 °C are permissible during transport and storage.
3.2 Fork-Lift Truck (or Lift Truck)
Transport
The hot-water heat pump must remain installed on the pallet dur-
ing fork-lift transport. The pump should be lifted slowly. Because
of its high centre of mass, the hot-water heat pump must be se-
cured against canting. To prevent damage, the hot-water heat
pump must be lowered onto a level surface.
EN-4
3.3 Manual Transport
Use the wooden pallet for manual transport. A second or third
carrying position can be determined with the help of ropes or car-
rying slings (these may be positioned around the ventilator case
and fixed to the water pipe nipples). If the pump is transported in
this manner (or with a sack barrow), the max. tilt angle of 45°
must not be exceeded (see illustration). If the pump can only be
transported in a tilted position, the hot-water heat pump ("heat
pump" switch) should not be operated until at least one hour after
installation in its final location.
ATTENTION!
The device cover cannot be used for carrying (the cover cannot withstand
larger forces!)
4
Set-Up
4.1 Installation Location
Installation location criteria:
The hot-water heat pump must be installed in a frost-free
and dry room. The room temperature / air sucked in by the
hot-water heat pump should be within a temperature range
of 15 °C to 35 °C (required for heat pump operation).
Furthermore, installation and air intake is not permitted in
rooms with air which is potentially explosive because of
gases, vapours or dust.
In order to prevent damage to interior walls caused by
dampness, it is recommended to provide good thermal insu-
lation between the room into which the exhaust air is re-
leased and the neighbouring rooms.
Condensate drainage (with a siphon) must be provided.
The air sucked in must not be excessively contaminated or
contain large amounts of dust.
The load-bearing capacity of the foundation must be suffi-
cient (weight of the filled hot-water heat pump approx.
440 kg!).
To ensure smooth operation and facilitate repair and mainte-
nance work there should be a minimum clearance of 0.6 m on all
sides of the device, as well as a minimum room height of approx.
2.50 m for operation without air ducts/hoses or bends (
venting") when the hot-water heat pump is installed (see illustra-
tion). Hot-water heat pump connection is (optionally) performed
with insulated ductwork of the NW 160, which must not exceed a
total length of 10 m.
To ensure effective operation, an air circuit bend (90° NW 160)
must be installed on the blow-out side in rooms with lower ceil-
ings and without ductwork. If the air circuit bend is used, place it
"free
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