Lennox CLIMATIC series User manual

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CLIMATIC
BALTIC
FLEXY
FLEXAIR
eNeRGy
AIRCOOLAIR
COMPACTAIR
FLATAIR
AQUALEAN
User manual
CLIMATIC RT_UNITARY-IOM-1508-E

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CLIMATIC
BALTIC - FLEXY - FLEXAIR - eNeRGy
AIRCOOLAIR - COMPACTAIR - FLATAIR - AQUALEAN
CLIMATIC RT_UNITARY-IOM-1508-E
CONTROL MANUAL Ref : CLIMATIC RT_UNITARY-IOM-1508-E
TABLE OF CONTENTS
INTRODUCTION
CLIMATIC controller
Compatibility
Warning
OVERVIEW
SCHEDULING
Scheduling zone
Scheduling mode
Scheduling zone anticipation
AIR MANAGEMENT
Room temperature
Thermostat / hygrostat control
Humidity setpoint
COMPONENTS
Blower
Compressor
Condenser fan
Coil defrost
Fresh air damper - Free cooling
Exhaust
Recovery
Extra heating (option)
Free input/output
COMMUNICATION
Master / slave
DS display
BMS
Inputs / outputs CLIMATIC boards
Alarms
ANNEXES
All the technical and technological information contained in this manual, including any drawing and technical descriptions provided by us,
remain the property of Lennox and must not be utilised (except in operation of this product), reproduced, issued to or made available to third
parties without the prior written agreement of Lennox.

• 2 • CLIMATIC RT_UNITARY-IOM-1508-E
INTRODUCTION
OVERVIEW
CLIMATIC CONTROLLER
The new generation of microprocessor based control, CLIMATIC may be fitted to the LENNOX rooftop range. It inherits 20 years of
technology and field operating experience from its predecessors the CLIMATIC 1, CLIMATIC 2 and CLIMATIC 50.
LENNOX has found the latest hardware technology available on the market place and developed software specifically designed for
rooftop applications, maximising the LENNOX unit’s efficiency and performance.
COMPATIBILITY
This documentation is compatible with the following programs:
• BALTIC / FLEXY 2 ranges from software version RT060 STD - Version 2 - Rev 2.0.
• AIRCOOLAIR / FLATAIR / CCOMPACTAIR from software version RT060 STD - Version 2 - Rev 2.0.
WARNING
Any parameter modification should be carried out by trained and licensed competent technician. Before start-up or restart of a unit
controlled by the CLIMATIC, it is mandatory to check adequacy between CLIMATIC and the unit with its options. In case of wrong
parameters, the inputs / outputs connections could be incorrect and may create some operation problems for the units and ultimately
breakdowns. LENNOX cannot be held responsible for any claims on the units due to a wrong parameters sequence or a parameters
modification carried out by non competent technicians. In this case, the warranty will be legally null and void.
DS MENU
Throughout the document, parameters and set points which are explained are identified with their address menu where they will be
accessible with the display DS (ref § DS display).
Example, the customer set point explained in the AIR MANAGEMENT § is indicated with the reference (2222), meaning that this set
point may be changed at the address (2222) with the display DS.
Mainly addresses of parameters accessibles at the «User» level (2xxx) are identified in the document.
«Expert level» set points (3xxx) accessible with password may be mentioned if they are important for the operation of the unit and
not accessible at the «User» level.
The full list of parameters and set point is given at the end of the document.

• 3 •
12h/0h
6h
9h 15h 3h
24h/12h
18h
21h
(2134):
(2141):
(2142):
(2143):
(2144):
(2145):
(2145):
(2146):
CLIMATIC RT_UNITARY-IOM-1508-E
SCHEDULING
SCHEDULING ZONE
Function
The CLIMATIC is provided by a real time clock which offers solutions to specify a weekly schedule.
Description
The CLIMATIC schedule manages up to 7 different clock zones per day from 00h00 to 24h00 and from Monday to Sunday. The zone
can start at different time each day of the week in order to optimise the operating of the unit.
Settings
The different settings to adjust the scheduling zone are available in the menu:
setting of the number of zone - Changeable only if the Expert mode has been activated
start time for zone 0, always 00h00 to start each day
start time of zone 1 adjustable every day from Monday to Sunday
start time of zone 2 adjustable every day from Monday to Sunday
start time of zone 3 adjustable every day from Monday to Sunday
start time of zone 4 adjustable every day from Monday to Sunday
start time of zone 5 adjustable every day from Monday to Sunday
start time of zone 6 adjustable every day from Monday to Sunday
Zone 2
Zone 0 Zone 3
Zone 4
Zone 1
Zone 6
Zone 5
Monday
Sunday
Factory settings:
- Number of zone : 3
- Zone 0 00h00 Monday to Sunday
- Zone 1 06h00 Monday to Saturday
- Zone 2 22h00 Monday to Saturday

• 4 •
12h/0h
6h
9h 15h 3h
24h/12h
18h
21h
(2135):
(2151):
(2152):
(2153):
(2154):
(2155):
(2156):
(2157):
CLIMATIC RT_UNITARY-IOM-1508-E
SCHEDULING
SCHEDULING MODE
Function
The CLIMATIC is able to control different modes for each zone in order to optimise the operating of the unit.
Description
The CLIMATIC can manage up to 4 different modes. - Night / Day / Day I / Day II
Settings
The different settings to adjust the scheduling mode are available in the menus:
setting of the number of mode - Changeable only if the Expert mode has been activated
mode used during the period of zone 0 adjustable every day from Monday to Sunday
mode used during the period of zone 1 adjustable every day from Monday to Sunday
mode used during the period of zone 2 adjustable every day from Monday to Sunday
mode used during the period of zone 3 adjustable every day from Monday to Sunday
mode used during the period of zone 4 adjustable every day from Monday to Sunday
mode used during the period of zone 5 adjustable every day from Monday to Sunday
mode used during the period of zone 6 adjustable every day from Monday to Sunday
Day mode
Night mode Day mode
Day I mode
DayI mode
Night mode
Day II mode
Monday
Sunday
Factory settings:
- Number of mode : 3
- Night Mode on Zone 0 from Monday to Sunday
- Day Mode on Zone 1 from Monday to Saturday
- Night Mode on Zone 2 from Monday to Saturday

• 5 •
(2142):
(2161):
(2162):
(2161):
(2162):
CLIMATIC RT_UNITARY-IOM-1508-E
SCHEDULING
SCHEDULING ZONE ANTICIPATION
Function
The CLIMATIC allows the start up of the unit before the pre-specified hour of the first zone (zone 1) of the day.
Description
This function is able to start the unit in zone 1 earlier if the outdoor temperature is under a specify threshold. The typical application
is to start the unit in heating mode if the weather is too cold compare to the actual season.
Example:
zone 1 start time (h)
Outdoor temperature (°C)
(2142) Z1 start time
8h00
Calculates Z1 start time
7h30
Gradient = 10 mn/°C
zone 1 start time: 8h00,
outside air temperature threshold to activate function: 10.0°C,
gradient (slope): 10 mn/°C.
In this example the foot is set to the value 10.0°C, which means zone 1 will always start at 8h00 if the outside air temperature is higher
than 10.0°C. If the outside air temperature is less than 10.0°C zone 1 will start according to the selected gradient and the difference
between the foot value and the actual outside air temperature (10.0 - 7.0 = 3.0 x 10 = 30 min). Then, the new start time for zone 1 is 7h30.
Settings
The different settings to adjust the anticipation are available in the menu:
outside air temperature threshold to activate function
gradient (slope)

• 6 •
12h/0h
6h
9h 3h
24h/12h
18h
21h 15h
(2243) (2242)
CLIMATIC RT_UNITARY-IOM-1508-E
AIR MANAGEMENT
ROOM TEMPERATURE
Function
The CLIMATIC controls the fresh or heat temperature according to the specifyed set point. The controller is programmed to maintain
a temperature as comfortable as possible with the most economic usage of the unit.
Description
The room temperature is maintained between a minimum threshold (the heating set point) and a maximum threshold (the cooling set
point). The dead zone is defined between these 2 thresholds.
1. Fix value
For a friendly use, a single room temperature set point is used. This setting is set in the middle of the dead zone. If the thresholds
(2243 ) or (2242) are modified, the set point (2222) is automatically calculated to the average value.
The cooling and heating thresholds can be specified according to the scheduling and can take different mode for each schedule mode
(Night, Day, Day I, Day II and BMS).
Changeover mode
Heating mode
Dead zone
Cooling mode
Ambient temperature (°C)
Customer set point
(2222)
Day mode
22.0°C
Night mode
18.0°C
Day mode
22.0°C
DayI mode
22.0°C
DayI mode
20.0°C
Night mode
18.0°C
Day II mode
20.0°C

• 7 •
(2242)
22°c
(2242)
19°c
(2243)
0°c
(2244)
30°c
(2246)
-5°k
(2245)
+ 5°k
(2247)
17°c
14°c
27°c
24°c
(2242)
(2241)
(2241)
(2241)
CLIMATIC RT_UNITARY-IOM-1508-E
AIR MANAGEMENT
2. Dynamic cooling set point
The CLIMATIC determines the appropriate air set point according to the outside temperature in order to optimise the energy consumption.
This function acts as a proportional shift of the cooling set point.
3. Set point offset according to outside temperature
CLIMATIC may offset the cooling and heating set points and so the dead zone according to the outside air temperature.
The dynamic set point starts to increase the cooling threshold when the outside temperature is over the cooling set point plus the
dynamic set point.
Example:
The cooling threshold has been set to 22.0°C and the dynamic set point has been set to 6K.
The cooling threshold will start to drift when the outside air temperature will be 28.0°C (22.0+6.0) and the new threshold will follow
the outside temperature evolution keeping a 6.0K difference.
So when the outside air temperature will reach 34.0°C, the new threshold will be 28.0°C.
Cooling set point (°C)
Outside air temperature (°C)
Cooling set point (°C)
Outdoor air temp °C
Heating set point (°C)
In the example above, setpoints (2245) and (2247) are set to -5k and +5k, from factory setting the are at 0k.

• 8 •
(2222):
(2241):
(2242):
(2243):
(2244)
(2245)
(2246)
(2247)
(2248):
(2249):
(3221)
2.0°C
(2248)
40.0°C
(2249)
CLIMATIC RT_UNITARY-IOM-1508-E
AIR MANAGEMENT
4. External current 4/20mA offset
In this case, the set point is set by one of the previous solution and can be adjust with an offset of +/- 5.0°C.
5. DC value
The CLIMATIC receives the room set point from the DC. If the read set point is different from the one calculated by the CLIMATIC,
the new set point is set by the DC during the actual zone. Each time the zone is changing, the DC set point is overwritten by the
CLIMATIC set point.
6. BMS value
The CLIMATIC receives the room set point from the BMS. Refers to the “BMS” paragraph for more details.
Cooling set point (°C)
Actual
set point
Actual
set point
Heating set point (°C)
customer (DC/DM) set point
Dynamic set point (cooling setpoint offset according to outside temperature)
set point of cooling mode
set point of heating mode
outdoor temperature low threshold for room temperature setpoint slope
room temp setpoint offset according to low outdoor air temp
outdoor temperature high threshold for slope on the room temperature setpoint
room temp setpoint offset according to high outdoor air temp
room temperature threshold for unloading cooling mode
room temperature threshold for unloading heating mode
offset for room temperature value
Settings
The different settings to adjust the ambient air temperature are available in the menus:
The control algorithm is protected by two safety limits.
• If the room temperature reaches the low limit in cooling mode, the compressor(s) are automatically stopped,
• If the room temperature reaches the high limit in heating mode, the compressor(s) or heaters are automatically stopped.
Cooling limit operating Heating limit operating
Air temp. room (°C) Air temp. room (°C)
Cooling mode
Heating mode