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3.5
'Heat Exchanger' Switch
The heat exchanger mode is used whenever hot water preparation is to take place by means of a supple-
mentary heat source (e.g. in winter by means of a boiler). The standard relay contact, for example, can be
used – through activation of the pump or valve – to charge the hot water tank by means of the heat ex-
changer coil integrated in the tank.
The hot water temperature is regulated by the temperature controller of the HPWH.
The supply terminal for the control (ON/OFF)
of the external auxiliary devices (pump, sole-
noid valve, etc.) is located on the switch box
panel.
This function is activated by the "heat ex-
changer" switch.
In addition, on the rear of the HPWH a vertical
sensor well (∅ 12 mm) is provided on the
storage tank (accessible via the electrical
connecting box). An external temperature
sensor can be inserted here. A free cable
bushing is provided in the rear panel.
4.
STORAGE / TRANSPORT
4.1
Storage and Transport of HPWH
As a rule, the HPWH is to be stored and/or transported in its shipping container in upright position and with-
out water charge. For a transport over short distances, and provided due care is exercised, an inclination
angle of up to 45° is permitted. Both during transport and storage, ambient temperatures of -20 to
+70 °C are permissible.
4.1.1 Transport Using a Forklift
When transported by a fork lift, the HPWH must remain mounted on the pallet. The lifting rate should be kept
to a minimum. Due to its top-heaviness, the HPWH must be secured against tipping over.
Lowering the HPWH: To prevent any damage, the HPWH must be placed on a level surface!
4.1.2 Manual Transport
For the manual transport, the wooden pallet can be used for the bottom
part. Using ropes or carrying straps, a second or third handling
configuration is possible. With this type of handling (applies to the
transport by hand cart as well), care must be taken that the max.
permissible inclination angle of 45° is not exceeded (see Fig. 6). If
transport in an inclined position cannot be avoided, the HPWH ("heat
pump" switch) should be taken into operation one hour after it has been
moved into final position at the earliest (see also Section 7).
Caution! The (painted) sheet-metal panel assemblies, in particular the upper panel assemblies, are not
designed to withstand the weight of the unit!
CAUTION!
High center of gravity , low overturning moment !!
free
cable bushing
Zugentlastungen
sensor immersion well
Fig. 5: Immersion well, top view
Fig. 6
Page 7 of
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