Metro Therm Microbooster P, Manual

Page: 37 / 52

37
Code
Set point
name
Description Range
Factory
setting
D23
OFF
The SG ready function can be activated by the
installer here. Three possible modes can be select-
ed. This function allows the start of the heat pump
from an external access. SG ready is not active if
there is not external input (SG1 OFF, SG2 OFF).
OFF/
SG Boost/
SG Eco/
SG Block
OFF
SG
BOOST
The heat pump and electric heater must start, if
below the max water temperature allowed in the
tank. Both Heat Pump and Electric heater are
forced to operate (SG1 ON and SG2 ON).
SG ECO
The heat pump operates minimizing costs, only the
heat pump is activated ( SG1 OFF, SG2 ON).
SG
BLOCK The unit can be stopped even if there is a need for
hot water (SG1 ON, SG2 OFF).
D24
Start/
stop
External control. If GC1 receives a signal higher
than 2V, the unit operation is stopped. OFF/
Start/
stop
OFF
D25
Service
timer The service timer is activated (ON) or deactivated
(OFF).
OFF/ON OFF
D26
Service
timer time
If the filter function is ON then the timer of the
filter can be selected. This set point determines
the number of months after which the filter alarm
is displayed.
0-36 12
D27
Service
reset Once the service has been completed, activate
this function to reset the filter timer.
OFF/ON OFF
D28 T HP max
The maximum water temperature that can be
reached by the heat pump in °C .
55-70 65
D30
Demo
mode
On the display everything looks in operation as
conventional mode, but all relays are off and all
errors are suppressed. This function can be acti-
vated for demonstation purposes.
OFF/ON OFF
D31
Preheat
hysteresis
The temperature difference between the water
tank temperature T3 and the heat source inlet
temperature T1 at which Preheat operation stops.
-20 - 20 5
SG Ready