Carel DLAQ2DF100, User Manual

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25
ENG
"humiFog direct" +0300073EN rel. 1.4 - 29.03.2022
average will be calculated between the main probes, depending on the
defi ned weight, and the limit probes will also have their own average,
again depending on the defi ned weight. For “humidity (two probes)“ or
“temperature (two probes)” control, only a group of main probes can be
defi ned. Wired probes can be connected to the main probe input (M2.1)
and the limit probe input (M2.5), which will be used as a second probe,
with the average calculated. If using wireless probes (maximum of four),
only a group of main probes can be defi ned, with the average calculated,
depending on the defi ned weight. For the connections of the signals
and/or probes, see chap. 4.
8.2.4 Weighted average of the probes (installer menu)
If using two temperature probes or two humidity probes, the humidifi er
controller will calculate the weighted average of the probe readings.
In this way, two probes can be used, for example humidity probes, at
opposite ends of the room, calculating the average.
Index Description Parameter
Da03
Da06
Weight of the
probes Set the weight of the probes
Default: 100
Possible settings: 0 to 100
Step: 1
The weight of each probe should be expressed with a value from 0 to
100.
The weighted average is calculated as follows:
Weighted average = ((S1×p1)+(S2×p2))
----------------------------
(p1+p2)
where “Si” is the probe reading, and “pi” the relative weight.
To calculate the arithmetic average, equal weights should be set (for
example: p1 = p2 = 100).
8.3 Functions
8.3.1 Filling
For correct functioning of the system there must be no air in the lines, so
as to avoid vibrations, unstable pressure and poor quality atomisation. To
eliminate all air, the fi lling time must be set correctly. When starting the
system the fi rst time, measure the time required for the water to reach
the end of the circuit, and wait only until water visibly comes out of the
circuit. The longer the water circuit, the higher the fi lling time needs to
be.
With reference to the high pressure hose supplied (Øint=6.3 mm), it is
recommended to set the times indicated in the table.
Pumping station 40/50 l/h 80/90 l/h
Time
1 min per 15 m of
tubing
1 min per 30 m of
tubing
Ref. Display Description Range Def UoM
Db01 En. fi lling When the pumping station needs
to start and the water supply line is
detected as being empty, i.e. when
fi rst starting, enabling the pump,
starting again for the new season
etc., by setting the parameter to Yes,
the pump delivers the fl ow-rate for
the time defi ned by the following
parameter, so as to fi ll the line before
atomisation commences
Yes/No Yes
Duration Line fi lling time before starting ato-
misation, only if the water supply line
is detected as beeing empty 1/60 2 min
Tab. 8.c
8.3.2 Washing
The washing function involves fl ushing all of the water pipes for a set
time. The purpose is to completely wash the system and avoid stagnation.
Ref. Display Description Range Def UoM
Db02 Washing:
periodical
daily
Disable
washing
washing carried out after
a set number of hours of
inactivity.
Washing performed daily at a
predefi ned time
Washing disabled periodical
daily
disabled peri-
odical type
Interval
Time Number of hours of inactiv-
ity after which a periodical
washing cycle is performed
Time of day when the daily
washing cycle is performed 0/99
0/24 12
0 h
h
Duration
Duration Periodical washing cycle time
in minutes
Daily washing cycle time in
minutes 0/60
0/60 4 min
Tab. 8.d
NOTICE: (*) it is advisable to set a washing time twice as long as the fi lling
time.
8.3.3 Blower fan management
The blower fans that atomise the water can be started before atomisation
commences, so as to reach an air fl ow that can support atomisation
when this starts.
A delay can be set for stopping the fans when atomisation ends, so as to
guarantee air fl ow immediately after the end of atomisation.
Ref. Display Description Range Def UoM
Db04 On ad-
vance
Start fans in advance before
starting atomisation 0-10 3 s
Off delay Delay in stopping fans after
atomisation ends 3-120 10 s
Tab. 8.e
8.4 Confi gurations
8.4.1 Main humidity probe setting
The main probe can be confi gured on screen index Dc01 for the single-
zone and Dc07 for two-zone cabinets.
Index Description Parameter
Dc01
Dc07 Main probe Main probe confi guration
Default: Enable: Enabled (depending on the type of
control)
Type: 0-10 V
Minimum: 0% rH - Maximum: 100% rH
Off set: 0
En. Al (enable alarms): Yes
Del: 60 seconds
Possible settings:
Type 0-10 V/0-1 V/NTC/4-20 mA/0-20 mA/2-10 V
Minimum: 0-100% rH - Maximum: 0-100% rH
Off set: 0
En. Al (enable alarms): Yes
Del: 0-600 seconds
Tab. 8.f
For each probe, after having specifi ed the type, the minimum and
maximum values readable can be defi ned, as well as an “off set” to
compensate for any imprecisions in the value read (example: off set =
3% rH corresponds to a 3 percent increase in the humidity value read by
the probe). The "En. Al." parameter enables the alarms corresponding to
probe faults. If a fault is detected for longer than the value of the "Delay"
parameter (seconds), the "main probe broken or disconnected" alarm will
be activated.