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1.
Regulations / Safety Notices
(
This installation and operating manual must be read before the unit is started up!
¾ ¾ ¾ ¾ # # # # The heat pump water heater (HPWH) is designed exclusively for the heating of domestic or potable wa-
ter within the specified operating temperature limits!
¾ ¾ ¾ ¾ In the design and construction of the HPWH, all relevant EC directives were complied with (see also EC
Declaration of Conformity).
¾ ¾ ¾ ¾ A qualified, experienced technician must ensure that prior to the commencement of any mainte-
nance/repair activities on refrigerant-carrying parts, the refrigerant has been removed to such an extent
as necessary for the safe performance of this work. The refrigerant must be handled and disposed of in
accordance with applicable regulations and must not be released into the atmosphere! (Refrigerant
R134a is CFC-free, non-flammable and has no ozone-depleting properties).
¾ ¾ ¾ ¾ When working on the HPWH, the unit must always be disconnected from the power source (pull the plug).
¾ ¾ ¾ ¾ The electrical connection of the HPWH must be performed according to and conforming with all relevant
VDE, EN and IEC standards. Beyond that, the technical connection requirements of the local utility com-
panies have to be observed.
Caution!
Any work on the hot water heat pump may only be performed by qualified persons! All relevant acci-
dent prevention regulations have to be observed!
2.
Description
The HPWH is a heating appliance ready for connection and essentially consists of a domestic water tank,
the components of the refrigeration, air and water circuits as well as all control, regulating and monitoring
devices required for automatic operation.
The HPWH uses electricity to extract the heat from the drawn-in air for the generation of hot water. The
HPWH appliance type featuring an internal heat exchanger is suited for connection to a supplementary heat
source such as a boiler or solar system. A vertical well (inside ∅ ≥ 12 mm) is provided to accommodate an
external temperature sensor. The units are equipped with an electric immersion heater (1.5 kW) as standard.
The electric immersion heater fulfils four functions:
„#
Supplementary heater
Activating the immersion heater (via "Immersion heater" switch, see Section 3.4) in addition to the heat
pump approximately halves the water heating recovery time.
„#
Frost protection
Any time the temperature of the drawn-in air drops below 8 °C, the heat pump switches off and the
electric immersion heater is automatically switched on; the latter heats the water (only) until the preset
setpoint temperature is reached.
„#
Emergency heat
The electric heating element (immersion heater) will maintain the hot water supply when the heat pump
requires servicing.
„#
Higher water temperature
If the required hot water temperature is higher than the temperature that can be reached by the heat
pump (approx. 55 °C), the temperature can be increased to max. 85 °C by the immersion heater.
For hot water temperatures > > > > 55 °C the heat pump is switched off, and water heating
Note:
is accomplished by the immersion heater only.
)
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