Fujitsu WATERSTAGE 112 - Page 79

Heat Pump, Split System, Single Service, 3 phase
Maintenance Document 1394-1 79
Optimisation at switch-on and switch-off
Line no.
HC1 HC2
Programming line
790 1090 Optimum start control max
791 1091 Optimum stop control max
Optimum start control max
The change in temperature levels is optimised in
such a way as to reach the comfort setpoint during
changeover times.
Optimum stop control max
The change in temperature levels is optimised in
such a way as to reach the comfort setpoint -1/4 °C
during changeover times.
Reduced Setpoint Increase
Line no.
HC1 HC2
Programming line
800 1100 Reduced setpoint increase start
801 1101 Reduced setpoint increase end
This function is used mainly in heating installations
that do not have high supplies of power (e.g. low
energy homes). In that case, when outdoor
temperatures are low, adjusting the temperature
would be too long.
Increasing the reduced setpoint prevents excessive
cooling of the rooms in order to shorten the
temperature adjustment period when changing over
to the comfort setpoint.
Comfort
set
p
oint
(
710
)
Reduced
set
p
oint
(
712
)
Begin
increase
(
800
)
End increase
(
801
)
Averaged OT