www.dimplex.de
EN-7
5.6
Englis
h
5.4 Safety and control components
High pressure switch
Placed on high pressure side of the the refrigeration circuit the
high pressure switch prevents the compressor from operating if
abnormal working. This switch is calibrated during manufacture
and should not be adjusted by the installer.
Low pressure transducer
Placed on the low pressure side of the refrigeration circuit, it
measures the working pressure and generates a pre-warning in
case an abnormal pressure occurs.
High pressure transducer
Placed on the high pressure side of the refrigeration circuit, it
measures the working pressure and generates a pre-warning in
case an abnormal pressure occurs.
5.5 Electric components
Control board
Controls all aspects of the heat pump operation.
5.6 Electronic control
Modu-Control
The controller allows:
Temperature control of the output water with proportional-in-
tegral algorithm: maintains average output temperature at
value set
Intelligent defrost program uses pressure drop in the refrig-
eration system to determine when the coil is effectively de-
frosted, avoiding unnecessary defrosting
Defrosting by cycle reversing: to overcome more extreme
ambient conditions
Weather compensation set point control as standard
Condensation check based on the pressure rather than on
temperature for absolute stability (with revs. adjuster acces-
sory )
5 temperature probes and 2 pressure transducers
Pre-alarms with automatic reset: in the case of alarm, a cer-
tain number of re-starts are allowed before the heat pump is
blocked from operation
Alarm on the
Δ
t: to identify wiring errors (reverse rotation) or
blocked cycle reversing valve
Compressor functioning hours count
Compressor peak count
Historical alarms
Auto-start after voltage drop
Local or remote control (remote control is supplied as op-
tional extra)
Display of the state of the unit:
a) Voltage presence
b) Compressor ON/OFF
c) Current operation mode (Heating / Cooling)
d) Alarm active indication
Probes, transducers and parameters display
a) Water outlet
b) Water inlet
c) Coil temperature
d) Pressing line gas temperature
e) External air temperature (heat pumps with DCP)
f) Flow pressure
g) Intake pressure
h) Temperature error (sum of the proportional and integral
error)
i) Stand-by times for start-up/switch-off of the compressor
Alarms management
a) Low pressure
b) High pressure (primary alarm: switch directly blocks sup-
ply to compressor)
c) High discharge temperature
d) Anti-freeze
e) Water differential pressure switch
f) Alarm on the
Δ
t
ON/OFF external contact
Season switching from external contact. For further informa-
tion on this function please contact Dimplex technical de-
partment.
