HIdRos WDH 039, Technical Manual

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WDH
Ground source heat pumps
MTWDHGB REV.072008
32
SAFETY DEVICE SETTING
Capacity Steps Capacity steps
2 4
Device
Set-point Differential Set point Differential
Reset
Type
Control thermostat (summer) °C 10 2 9 3 …
Control thermostat (winter) °C 42 2 43 3 …
Anti-freeze thermostat °C 4 6 4 6 MANUAL
Electric heater thermostat °C 4 6 4 6 MANUAL
High pressure switch Bar 28 7 28 7 MANUAL
Low pressure switch Bar 0,7 1 0,7 1 MANUAL
Water safety valve (Optional) Bar 6 … 6 … …
ELECTRIC DATA
Power supply V/~/Hz 400 / 3 / 50 Control board V/~/Hz 24 / 1 / 50
Auxiliary circuit V/~/Hz 230 / 1 / 50
Electric data may change for updating. It is therefore necessary to refer always to the wiring diagram inside the units.
WARNING: All this operation described in next chapters MUST BE DONE BY TRAINED PEOPLE ONLY.
Before every operation of servicing on the unit, be sure that the electric supply is disconnected.
INSPECTION
When installing or servicing the unit, it is necessary to strictly follow the rules reported on this manual, to conform to all the
specifications of the labels on the unit, and to take any possible precautions of the case. Not observing the rules reported on this
manual can create dangerous situations. After receiving the unit, immediately check its integrity. The unit left the factory in perfect
condition; any eventual damage must be questioned to the carrier and recorded on the Delivery Note before it is signed. HIDROS
must be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of any severe
damage.
LIFTING AND HANDLING
Standard version Low noise version
When unloading the
unit, it is highly
recommended to avoid
any sudden move in
order to protect
refrigerant circuit,
copper tubes or any
other unit component.
Units can be lifted by
using a forklift or, in
alternative, using belts,
being sure that the
method of lifting does
not damage the lateral
panels and the cover. It
is important to keep the
unit horizontal at all
time to avoid damages
to the internal
components.