21
Water heater adjustment
(Adjust-heater)
Water heater adjustment menu.
Q-01
20
Return heat medium temperature in winter mode when the fans
are turned off that is kept automatically at set level by means of
actuating the heat medium regulating valve [°C].
Q-02
180
Time period for air heating coil preheating [s]. During this period the
heat medium regulating valve is fully opened, the pump is turned on.
Q-03
40
Return medium temperature at the end of the heating cycle [°C] . If
the return medium temperature is below Q-03, the fan start-up is
disabled and U3 alarm is generated (refer Alarms, U3 code).
Q-04
5
Minimum return heat medium temperature to detect the water
heating coils danger [°C]. If the return heat medium temperature
drops down below Q-04, the heating coil freezing protection is
activated (refer Alarms, U2 code).
Q-05
0
Winter/summer mode switching temperature [°C]. The unit switches
automatically to summer or winter operation mode if the outside
temperature is above or below the Q-05 set point.
Q-07
180
Time period to reset the water coils freezing failures [s]. If automatic
alarm reset is enabled and any freezing danger appears, the fans are
restarted if they were operating before the alarm after Q-07 set time
period provided that the alarm is removed.
Q-08
2
Adjustment of supply air temperature regulation parameters by
the heat medium regulating valve - PI-regulation proportionality
constant.
Q-09
60
Adjustment of supply air temperature regulation parameters by the
heat medium regulating valve - PI-regulation integrating coefficient
[s].
Q-10
0,5
Adjustment of supply air temperature regulation parameters by the
heat medium regulating valve - dead zone [°C]. If the discrepancy is
below Q-10, it shall be disregarded.
Q-11
2
Adjustment of return heat medium temperature regulation
parameters by the heat medium regulating valve - PI-regulation
proportionality constant.
Q-12
60
Adjustment of return heat medium temperature regulation
parameters by the heat medium regulating valve - PI-regulation
integrating coefficient [s].
Q-13
0,5
Adjustment of the return heat medium temperature regulation
parameters by the heat medium regulating valve - dead zone [°C]. If
the discrepancy is below Q-13, it shall be disregarded.
Q-14
Turned off (off)
Enable/Disable water coil pre-heating before the fan start-up in
winter mode.
