IOM / ROOF-TOP FLEXY™ Series - Page 59
ADVANCE ACTIVATION OF THE MORNING
SLOT
Depending on the thermal inertia of the building or the
installation and external climatic conditions, it is possible to
advance the switch from the NIGHT slot to the MORNING
slot.
The time advanced, in minutes, is calculated using the
following formula :
Time advanced = (gradient start temperature) x inertia
coefficient
For example :
- Outside temperature 0 °C
- Gradient start temperature set to + 10 °C (i.e. below
10°C outside, you want to advance start-up)
- Inertia coefficient set to 12
- Start of Morning slot set to 8h30
In these conditions the switch to the morning slot will be
advanced by: (10 - 0) x 12 i.e. 120 min.
The installation will therefore start up at 6h30 instead of 8h30.
REGULATION OF AMBIENT AIR
Two power factors, one for cooling (variable 98), the other for
heating (variable 97), are calculated according to the difference
in temperature between the Setpoint and the reference
temperature.
The progression of these cooling or heating power factors is
limited by the temperature hysteresis and the activation
differentials between 2 stages.
If the hysteresis value is 0, the power factor concerned is no
longer limited.
See below for setting hysteresis and activation differentials.
The power factors are periodically recalculated by the
CLIMATIC™. The integration time (setpoint 53) is adjustable.
This parameter should depend on the air agitation ratio of the
unit and temperature variations in the sector to be air
conditioned.
CLIMATIC™ PARAMETERS
ORDER OF COMPONENTS IN REGULA-
TION
Cooling operation
Setpoint 58 =Off
Damper è Water coil è Compressors
Setpoint 58 =On
Damper è Compressors è Water coil
Heating operation
Setpoint 59 =Off
Water coil or electric coil è Compressors è Gas
Setpoint 59 =On
Compressors è Gas è Water coil or electric coil
Setpoint 60 =Off
Water coil or electric coil è Gas è Compressors
Setpoint 60 =On
Water coil or electric coil è Compressors è Gas
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