Specifications

• 8 • Application Guide • BALTIC - 0108
FEATURES AND BENEFITS CONTROL
CONTROL
CLIMATIC™ ™ 50 Software (RT50)
The new generation of microprocessor based control, CLIMA-
TIC™ 50 will equip the BALTIC rooftop range.
Itinherits15yearsoftechnologyandeldoperatingexperience
from its predecessors the CLIMATIC™1 and CLIMATIC™ 2.
LENNOX has found the latest hardware technology available on
themarketplaceanddeveloppedasoftwarespecicallydesi
-
gned for rooftop applications, maximising the LENNOX rooftops
efciencyandperformance.
CLIMATIC™ 50 has been thought to be more user-friendly
than CLIMATIC™ 2 and easier to understand. However CLI-
MATIC™ 50 has been designed to be as powerfull and even
moreexible.
CLIMATIC™ 50 provides exibility and the ability to control
multiplerooftopsonasinglejobsite.
Enhanced with a 16 bit processor at 14Mhz and a 2 Megaby
-
tesashmemory,CLIMATIC™50hasbeendesignedtosave
energy and to extend the operational life of the BALTIC product
range. It will, for example, optimise the running time of each
compressor, automatically switch between compressors from
thosethatstartrstandhaveanantishort-cycleprogram.Itis
able to control 34 fault signals and manage security algorithms
generating various fault signals.
In terms of comfort, CLIMATIC™ 50 provides an innovative PI
control.
CLIMATIC™ 50 looks at difference between set point and room
temperature and calculate the time needed to reach the set point
and determines the capacity required.
This innovative control, will garanty a better temperature accu-
racy, while saving energy in not bringing the full capacity when
not needed.
As cooling is often not the only requirement, hot water coils or
electric heaters can be provided with proportional control and
heat pump with multi step regulation is available as well.
As a standard feature, CLIMATIC™50 provides 4 scheduling
time zones per day on 7 days. This allows energy consumption
management according to the building use.
On each of the 4 time zones, heating set point, cooling set
point, minimum fresh air, humidity set point high and up, and
even the different authorisations for cooling and heating can be
adjusted.CLIMATIC™50providesachoiceofdifferentremote
displays depending on customer requirement and application
of the system.
Asastandardfeature,itispossibletosetalarms(adjustable
valuelowandhigh)onroomtemperatureandhumidity.
Step of heating priority
Unique feature on the market, CLIMATIC™ 50 allows the user
todecidewhichheatingelementwillcomerst.
This works perfectly on dual fuel unit, it is possible to pioritize
heatpumpmodedowntoanadjustablesetpoint(forexample
0°C)andswitchtogasredmodebelowthisvalue.
ThisgivesthebenetsoftheexcellentheatpumpCOPwhen
outside temperature is not too cold and allows to use gas heating
when temperature is lower.
Flexibility
CLIMATIC™offersincredibleexibility.Forexample,advanced
user can go in the heart of the regulation in deciding reactivity of
the PI algorythm or by setting supply temperature limits .They
might even decide to authorize or not some heating or cooling
device depending of the outside temperature.
Automatic summer/winter time change
CLIMATIC™ 50 offers an automatic time switch from winter to
summer. This had always been a problem in the past for custo-
mertokeepthererooftopattherighttime,jeopardisingalltheir
effort to optimize energy consumption by smart scheduling.
Noise reduction feature
During unoccupied timezone, BALTIC rooftop will work on half
of its capacity by using only half of the
compressors and half of the condensing fans (For double circuits
rooftops).
Therefore it may cycle more often but would be quieter when
running.
This option is very often used at night when capacity needed is
lower and when noise matters more.
Last 32 faults stored in the mother board
Part of the new features of CLIMATIC™50 is the storage in the
main mother board of the last 32 faults with time, date and fault
code. This can be seen with DS50 Service Display or Climalink
Climalook.. even if those were not connected when the fault
occurred.
Staggered start feature
If there is a power shortage, units will not restart at the same
time. To make this feature available, units have to be addressed
with a different number between 1 and 12. The unit will start a
number of minutes after power return depending on its address
(Address*10seconds).
Example, unit number 3 will start 30 seconds after power is
back.
This is a very important feature to avoid peaks of current.