Carel humiSonic Compact - Automatic Washing; Autotest; LED Signals; Reset Tank Hour Counter

15
ENG
“Ultrasound for fancoil” +0300059IE - rel. 1.7 - 24.10.2022
7. STARTING, USER INTERFACE AND BASIC FUNCTIONS
Before starting the humidier, check:
□ water connections: in the event of water leaks, do not start the
humidier before having restored the connections;
□ water vapour distribution: and electrical connections
7.1 Starting
See chapter "Electrical connections".
1 The humidier, once powered and enabled for production (remote
on-o/humidistat, terminal M14, ON/OFF from user terminal; ON/
OFF from serial), is ready for operation.
2 If there are no other external connections, the humidier will start, and
operation will only stop if the enabling signal (M14) is no longer present.
3 If TH temperature/humidity probe (optional) is connected to
terminal G, the humidier will operate until reaching the humidity set
point (default 50%rH) or the dew point temperature set point (pre-
set at 10°C/50°F) is reached, depending on the control mode set. See
chap. "Operating principles".
4 If terminal E is connected to the current transformer (TAM, optional)
and is enabled (dipswitch 7) the humidier will only start if current is
measured on the fan neutral wire on the principal system. This wire
must run inside the TAM. In this way, atomised water will only be
produced when the fan is on.
7.2 Shutdown/Standby
1
To switch the humidier o, disconnect power
2
If connected to power supply, the humidier goes into standby
when:
• the remote on/o contact is open
• TH probe is tted and the humidity/dew point temperature set
point has been reached
• no current is measured by the TAM (if tted and enabled)
• the on/o contact is open and serial enabling is set to 0 (see Chap.
"Humidier control via network") /or "Reset hour counter from
display" or disabling by keyboard
• a modulating signal is used (optional card) and there is no request
When the humidier is in standby, the unit is emptied automatically.
When in standby the fan stays on for 5 min.
7.3 Autotest
Whenever the humidier is rst started (from o ), if enabled and
humidity production is required, a test cycle is run. A complete ll and
drain cycle is performed, during which the level sensor is monitored; if
the test is successful, regular water vapour production will start. If the test
fails, production is disabled (see the alarm table).
7.4 LED signals
A light is tted on the top of the humidier to indicate operating status:
GREEN Description
Steady Atomisation in progress
Flashing slowly* Unit disabled
Flashing slowly and dimmed Set point reached
Flashing quickly** Transitory status with atomisation
temporarily paused
(e.g. autotest, washing)
*Flashing slowly: 1s ON and 1s OFF
**Flashing quickly: 0.2s ON and 0.2s OFF
The red LED means an alarm is active. See the specic chapter.
7.5 Reset tank hour counter
NOTICE: this operation must only be carried out by authorised personnel.
The humidier is tted with an hour counter that increases during
operation. After a set number of hours (5000), a signal is activated to
indicate maintenance should be performed on the tank and operation
of the piezoelectric elements checked (see chap. “Maintenance and
spare parts” and chap. “Alarms"). If the display terminal is connected to
the humidier, reset the hour counter on the terminal as described in
par. “Reset hour counter from display”. Otherwise, if the terminal is not
available, the hour counter can be reset by accessing the electronic
control board.
WARNING: electric shock hazard. Before making the electrical
connections, the appliance must be disconnected from the mains power
supply. Electrical disconnection must be veried by measurement.
To reset the hour counter at any time, proceed as follows:
• Switch the humidier o
• Wait for the tank to empty completely
• Close the water supply tap
• Remove the tank, making sure to disconnect the power connector to
the piezoelectric transducer driver card
• Open the On/O contact
• Switch the humidier on WITHOUT THE TANK. The orange LED,
observing the light guide from above, will ash
• Close the On/O contact, the orange LED will remain on steady
• Switch the humidier o
• Assemble the tank, reposition the piezoelectric element connector of
the driver board and open the water supply tap
• Switch the humidier on
7.6 Automatic washing
The humidier automatically runs a washing cycle at intervals in operating
time set by parameter b1 (default 60 minutes, parameter b0 can be used
to convert this value into hours, see Table parameter b0).
The washing cycle involves a complete drain cycle, a phase in which
ll and drain are activated together (default 1 minute, parameter b3) to
ush out any residues in the tank, a complete ll cycle and nally another
complete drain cycle.
During this operation, the production of nebulized water is stopped.
7.7 Washing due to inactivity
If the humidier remains inactive (on but in standby) for an extended
period (parameter b2, default 24 hours) a washing cycle is performed, as
described in the previous paragraph. This cleans the tank of any residues
(e.g. dust) that may have accumulated during the period of inactivity.
Parameter b0 can be used to set the time when this washing cycle is
performed. By default, the washing cycle is run after 24 hours (continuous)
of no operation, i.e. the humidier is in standby. This is because the
humidier is normally connected to a reverse osmosis system, which
needs to operate frequently in order to avoid malfunctions. Parameter b0
(see Table parameter b0, reverse osmosis) can be set so that the washing
cycle is performed when rst restarting after a period of continuous
inactivity set by b2.