Functions - Carel humiFog direct UA040DD101 User Manual

When using a main temperature control probe and an optional limit
temperature probe, atomisation is related to the temperature reading in
°C or °F made by the probe and increases as the value read deviates from
the set point St. Maximum production Pmax corresponds to the case
where the temperature value, read by the probe, is BP away (proportional
band) from the set point. The activation hysteresis hy is not settable by
the user.
Fig. 6.ac
Key:
Water_pr Pressurised water production Y
P0 Max production
Pm Min production
For "humidity (one probe)" or "temperature (one probe)" control, one
single main probe can be connected and configured, either wired or
wireless.
For "humidity with limit" or "temperature with limit" control, a wired
probe can be connected as the main probe and a wired probe as the
limit. If using wireless probes (maximum of four), two groups of probes
can be defined: the group of main probes and the group of limit probes.
In this case, the average will be calculated between the main probes,
depending on the defined weight, and the limit probes will also have
their own average, again depending on the defined weight.
For "humidity (two probes)" or "temperature (two probes)" control, only a
group of main probes can be defined. 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 defined,
with the average calculated, depending on the defined weight.
For the connections of the signals and/or probes, see chap. 4.
6.2.4 Weighted average of the probes (installer
menu)
If using two temperature probes or two humidity probes, the humidifier
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
Weight of the Set the weight of the probes
Da03
Default: 100
probes
Da06
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).
External signal
hy Activation hysteresis

6.3 Functions

6.3.1 Filling
For correct functioning of the system there must be no air in the lines,
so as to avoid vibrations, long transients and low-quality atomisation. To
eliminate all air, the filling time must be set correctly. When starting the
system the first 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 filling time needs to
be.
Ref. Display Description
Db01 En. filling When the pumping station
needs to start and the water
supply line is detected as
being empty, i.e. when first
starting, enabling the pump,
starting again for the new
season etc., by setting the
parameter to Yes, the pump
delivers the flow-rate for
the time defined by the
following parameter, so as to
fill the line before atomisation
commences
Duration Line filling time before start-
ing atomisation, only if the
water supply line is detected
as beeing empty
6.3.2 Washing
The washing function involves flushing all of the water pipes for a set
time. The purpose is to completely wash the system and avoid stagnation.
Ref. Display Description
Db02 Washing: washing carried out after
periodical a set number of hours of
daily inactivity.
Disable Washing performed daily at a
washing predefined time
Washing disabled
Interval Number of hours of inactiv-
Time ity after which a periodical
washing cycle is performed
Time of day when the daily
washing cycle is performed
Duration Periodical washing cycle time
Duration in minutes
Daily washing cycle time in
minutes
6.3.3 Blower fan management
The blower fans that atomise the water can be started before atomisation
commences, so as to reach an air flow that can support atomisation
when this starts.
A delay can be set for stopping the fans when atomisation ends, so as to
guarantee air flow immediately after the end of atomisation.
Ref. Display Description
Db04 On ad- Start fans in advance before
vance starting atomisation
Off delay Delay in stopping fans after
atomisation ends
25 "humiFog direct" +0300073EN rel. 1.2 - 02.05.2019
ENG
Range Def UoM
Yes/No Yes
1/60 2 min
Tab. 6.c
Range Def UoM
periodical peri- type
daily odical
disabled
0/99 12 h
0/24 0 h
0/60 4 min
0/60
Tab. 6.d
Range Def UoM
0-10 3 s
3-120 10 s
Tab. 6.e