Carel humiSonic UU02, User Manual, Page: 45 / 68

13
ENG
Direct version for room applic. +0300062IE - rel. 1.1 - 16.11.2017
4.5 Disabling
The humidifier can be disabled in 2 different ways:
•
Opening contact M14.1 and M14.2 (enabling signal)
•
There are active alarms.
4.6 Reset tank hour counter
The humidifier is fitted with an hour counter that records 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 ...). To reset the hour counter at any
time, proceed as follows:
•
Switch the humidifier OFF;
•
Close the water-tap and wait for the tank to empty completely;
•
Disconnect the Lumberg (see Fig. 4.a) connector on the control board;
•
Open the ON/OFF contact;
•
Switch the humidifier (with the Lumberg connector disconnected
from the control board). White and red lights will be flashing;
•
Close the ON/OFF contact, white and red lights remain on steady;
•
Switch the humidifier OFF;
•
Plug the Lumberg connector (see Fig. 4.a) onto the board, making sure
it is inserted in the correct direction;
•
Switch the humidifier ON.
Fig. 4.a
4.7 Automatic washing
The humidifier 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 b0 parameter table).
The washing cycle involves a complete drain cycle, a phase in which
fill and drain are activated together (default 1 minute, parameter b3) to
flush out any residues in the tank, a complete fill cycle and finally another
complete drain cycle.
During this operation, atomized water production is stopped.
4.8 Washing due to inactivity
If the humidifier 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 humidifier is in standby. This is because the
humidifier is normally connected to a reverse osmosis system, which
needs to operate frequently in order to avoid malfunctions. B0 (see
parameter b0 reverse osmosis) can be set so that the washing cycle is
performed when first restarting after a period of continuous inactivity set
by b2.
4. STARTING, USER INTERFACE AND BASIC FUNCTIONS
Before starting the humidifier, check:
□
water connections: in the event of water leaks, do not start the
humidifier before having restored the connections;
□
electrical connections
4.1 Starting
See chap. Electrical connections
1 The humidifier, once powered and enabled for production (remote
on-off/humidistat, terminal M14), is ready for operation
2 If there are no other external connections, the humidifier will start, and
operation will only stop if the enabling signal (M14) is no longer present.
3 If TH humidity probe (optional) is connected to terminal G, the
humidifier will operate until reaching the humidity set point (default
50%rH). See chap. Operating principles
4.2 Shutdown/Standby
1 To switch the humidifier off, disconnect power
2 The humidifier goes into standby when:
•
the remote ON/OFF contact is open
•
TH probe is fitted and the humidity set point has been reached
•
the ON/OFF contact is open and serial enabling is set to 0 (see
chapter Humidifier control via network)
•
a modulating signal is used (optional card) and there is no
request
When the humidifier is in standby, the unit is emptied
automatically. When in standby the fan stays on for 5 min.
4.3 Autotest
Whenever the humidifier is first started (from off ), if enabled and humidity
production is required, a test cycle is run. A complete fill and drain cycle
is performed, during which the level sensor is monitored; if the test is
successful, regular atomized water production will start. If the test fails,
production is disabled (see the alarm table).
4.4 ON/OFF switch lights
The ON/OFF switch has 2 lights: white and red:
WHITE LIGHT
Steady Humidity production
Flashing slowly* Stand-by or Set point reached
Flashing quickly* Autotest or wash
*Flashing slowly: 1s ON and 1s OFF
** Flashing quickly: 0.2s ON and 0.2s OFF
The red LIGHT means an alarm is active. See Alarm table for information
on alarms.