Carel HeaterSteam 4 UR002, User Manual

Page: 36 / 92

36
ENG
“heaterSteam” +0300087EN - rel. 1.4 - 22.01.2021
7.4.3 Wir e l e ss prob e s (Ins ta ll e r m e nu)
Confi guration of the wireless probes involves defi ning the weight of each
probe; for further details on the averages see paragraph 7.2.2 “Weighted
average of the probes”.
Screen Ec03 can be used to deactivate, activate as main probe or limit
probe each of the four possible wireless probes.
Index Description Parameter
Ec03 Wireless probes Wireless probe confi guration (main and limit)
Defaults:
Probe 1: disabled
Probe 2: disabled
Probe 3: disabled
Probe 4: disabled
Possible settings: disabled, main probe, limit probe
To confi gure the wireless probes, weights and communication times, use
screens Ec04, Ec05, Ec06 and Ec07, depending on the number of probes
connected.
Index Description Parameter
Ec04
Ec05
Ec06
Ec07 Wireless probe 1
Wireless probe 2
Wireless probe 3
Wireless probe 4 Confi gure probe weight and communication times;
Defaults:
Weight: 100
Transmission time: 10s
Disconnection delay: ms
Possible settings:
Weight: 0 to 100
Transmission time: 5-3600 seconds
Disconnection delay: ms
7.4.4 M a ximum numb e r of e v a por at ion c y c l e s
b et w ee n dr a in t o dilu te c y c l e s s etta bl e by the
us e r (Ins ta ll e r m e nu)
The number of evaporation cycles between two successive drain to dilute
cycles is calculated internally, based on feedwater conductivity. To use
the automatic calculation, set “Evaporation cycles before drain” = “Auto”.
The “Evaporation cycles before drain” parameter sets the maximum
number of evaporation cycles allowed between two drain to dilute
cycles.
The number of evaporation cycles used by the controller will be the
lower of the value set manually by the user and calculated automatically.
Index Description Parameter
Ec11
Evaporation
cycles before
drain Set the number of evaporation cycles between two
drain to dilute cycles.
Default: number of cycles: Auto;
Possible settings: Auto (automatic management
according to feedwater conductivity); 1 to 40
Remarks: if the parameter = “Auto”, the number of evap-
oration cycles between two drain to dilute cycles is set
automatically by the controller based on feedwater
conductivity.
7.4.5 Dur at ion of the fi ll a nd dr a in t o dilu te c y c l e s
s etta bl e by the us e r (Ins ta ll e r m e nu)
On screen Ec12, the duration of the fi ll time after the evaporation cycle
and the duration of the drain to dilute cycle can be set in relation to the
default parameter values.
Index Description Parameter
Ec12 Variation in
fi ll and drain
times Set the fi ll after evaporation and drain to dilute times in
relation to the default values
Defaults:
variation in fi ll time: 100%
variation in drain time: 100%:
Possible settings:
variation in fi ll time: 20-100%
variation in drain time: 0-190%
The duration of the drain to dilute cycle is set using the “variation in drain
time” parameter, which defi nes the time as a% of the default value:
new drain time = (default drain time × variation in drain time)/100
Example: if the default time is 10 s and “variation in drain time” = 50%,
then the new time will be = 10 s x 50/100 = 5 s.
The same also applies to the fi ll time after the evaporation cycle, in this
case using the “variation in fi ll time” parameter:
new fi ll time = (default fi ll time × variation in fi ll time)/100
Remarks on the duration of the drain to dilute cycle: if the drain to dilute
time is very short, there may be the
RISK OF FOAM/CORROSION due to
increased internal conductivity.
Low values should be set for the “variation in drain time” parameter only
after having carefully evaluated the water quality and the consequences.
Warning: RISK OF FOAM FORMING WHEN “variation in drain time”
IS TOO LOW FOR THE WATER QUALITY.
“variation in drain time” = 100 % means that the default value will be used.
“variation in drain time”< 100 % means that the drain time will be less
than the default, consequently introducing less fresh water when next
refi lling, reducing the negative impact on steam production (important
in high-precision applications).
Setting the “variation in drain time” for precise %RH control:
the “variation in drain time” must be set as low as possible, without
however causing formation of foam/corrosion. Proceed by trial and error
so as to fi nd the most suitable value.
Remarks on the duration of the water fi ll cycle: this can be used to off set
water pressure upstream of the humidifi er. Decrease the fi ll time in the case
of high pressure and vice-versa. Nonetheless, feedwater pressure must be
within the range of pressure values specifi ed in Tab 16.b (1-8 bars).
7.4.6 Set f ee dw ate r ha rdn e ss (Ins ta ll e r m e nu)
The user can set the feedwater hardness. Carel provides an analysis kit
(
P/N: KITTH00000 ) to read feedwater hardness.
The “Water hardness” parameter defi nes the maintenance alarm for
cleaning the cylinder and the heaters.
Index Description Parameter
Ec13 Water hard-
ness Set the feedwater hardness
Possible settings:
Hardness: Auto, Manual
Manual setting: 0-10°f, 10-20°f, 20-30°f, 30-40°f
Remarks: if the value is set to Auto, the water
hardness is estimated by the controller based on the
conductivity value.
If water hardness is not set, the controller independently manages
the type of water based on the conductivity reading. Although there
is no reliable relationship between water hardness and conductivity, a
hardness of 40°f is typically equivalent to a conductivity of approximately
900-1000 μS/cm at 20°C.
See paragraph 7.2.7 Cylinder operating hours for information on the
maintenance alarm times in relation to water hardness or conductivity.
7.4.7 N o f ee dw ate r s ett in g (Ins ta ll e r m e nu)
In the event of no feedwater, the corresponding “No water” alarm is
displayed. After the alarm has been displayed and the “no feedwater time”
has elapsed, the controller attempts a new fi ll cycle. At each attempt, the
“no feedwater time” is multiplied by the number of times it has already
been carried out. The controller therefore performs a series of attempts to
refi ll with water, for a maximum time of fi ve hours after the alarm occurs.
The alarm is reset only if the water level eff ectively reaches the
intermediate position (yellow LED).
Index Description Parameter
Ec14
No feedwater
time Set the time to check for no feedwater.
Default: 10 minutes
Possible settings: 0 to 20 minutes
Step: 1 minute
Remarks: if the value is set to 0, no more attempts will
be made to refi ll the water and the alarm will not be
reset