Lennox CLIMATIC 50 User manual

Providing indoor climate comfort
CL50-CHILLERS-IOM_Cust0808-E
User manual
CLIMATIC™ 50 - CHILLERS

CLIMATIC™50 –Chiller / Heat Pump –Customer version Page 1
CL50-CHILLER-IOM_CUST-0808-E
Climatic 50
CHILLER & HEAT PUMP
INCLUDING NEOSYS RANGE
USER MANUAL
Ref: CL50-CHILLER-IOM_CUST-0808-E
CUSTOMER VERSION
LENNOX have been providing environmental solutions since 1895, our range of rooftop and chiller continues to meet the
standards that have made LENNOX a household name. Flexible design solutions to meet YOUR needs and uncompromising
attention to detail. Engineered to last, simple to maintain and Quality that becomes a standard. Further Information on
www.lennoxeurope.com.
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 used (except in operation of this product), reproduced,
issued to or made available to third parts without the prior written agreement of Lennox.
The technical informations and specifications contained in this manual are for reference only. The manufacturer reserves the right to modify
these without warning and without obligation to modify equipment already sold.

TABLE OF CONTENT
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CL50-CHILLER-IOM_CUST-0808-E
Page
Introduction.............................................................................................................3
Wiring connections.................................................................................................4
Configuration..........................................................................................................8
Scheduling –Clock setting.....................................................................................9
Customized input/output.........................................................................................11
Standard input/output.............................................................................................14
Configuration of the BM50 plan address................................................................15
Allocation of displays to the BM50.........................................................................16
DC50 comfort display.............................................................................................17
DS50 menu tree .....................................................................................................24
Error codes alarms.................................................................................................34

INTRODUCTION
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CLIMATIC™50
The new generation of microprocessor based control, CLIMATICTM50 may be fitted to the Lennox Chiller or
Heat pump range. It inherits 20 years of technology and field operating experience from its predecessors the
CLIMATICTM1 and CLIMATICTM2.
LENNOX has found the latest hardware technology available on the market place and developed software
specifically designed for Chiller and Heat pump applications, maximising the LENNOX unit’s efficiency and
performance.
Compatibility
This documentation is compatible with the programs Chiller and Heat pump:
NEOSYS range from software version NA050.01.
Warning
Any parameter modification should be carried out by trained and licensed competent technician.
Before start-up or restart of a unit controlled by Climatic 50, it is mandatory to check adequacy
between ClimaticTM50 and the unit with its options.
Menus (38xx) for unit and options,
Menus (39xx) for communication.
In case of wrong parameters, I/O links 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.

WIRING CONNECTIONS
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IMPORTANT WARNING
Any wiring modification on the CLIMATIC™50 must be done by Lennox technician or employees having
valid electrical qualification and authorisation.
For any modification of wiring on the 24V supply or on 4-20mA sensor, check the polarity prior to
apply the power. Wrong polarity may cause serious damage and destroy the pLAN network. Lennox
will not accept liability for damage caused by wrong power connection or any wiring modification
done by people without valid training and qualifications.
Any external connection with the unit, using 24Vac voltage should not exceed a length of more than
30m. It concerns external contacts connected to Climatic™50 on logical inputs. Over 30 m,the
installer must interface this information with relays or converters.
In any case, the 24Vac control voltage must not be used to drive external function with Climatic™50
logical output.
WARNING: Separate as much as possible probes, displays, logical input cables from power cables with strong inductive load,
in order to avoid possible electromagnetic perturbations.
CONNECTION
SENSORS AND PROBES
External sensors or probes connection must be carried out with the following cable:
oCable length up to 20m: AWG22 (0.34 mm ²), 1 pair crossed with screen.
oCable length up to 50m: LiYCY-P (0.34 mm ²), 1 pair with general shield.
The cable length should not exceed 50m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable.
DISPLAY DS50
The Display DS50 can be connected to the Climatic™50 either on one of the RJ12 connectors located on the board
DT50,or directly on the main board BM50 connector J10.
Connection is carried out by the flat 1.5m cable delivered with this DS50.
In any the case, Display DS50 cannot be remotely connected.
In case of Master/Slave installation, one, and only one, display DS50 must be connected on the pLan bus.
DISPLAY DC50 (Remote CONNECTION)
Warning: A wrong wiring of the display immediately damage it and/or the main board BM50.
The optional DC50 is designed to be mounted on the wall.
Fit the cable from the DT50 board through the back piece
Fasten the back piece to the wall using the rounded head screws supplied in the packaging
Connect the cable from the main board on the connector on the back of the DC50 display
Fasten the front panel on the back piece using the flush head screws supplied
Finally fit the click-on frame

WIRING CONNECTIONS
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Display DC50 is connected to the Climatic™50 with the DT50 screw connector. Connection must be carried out by the
following cable:
Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.
Cable length up to 500m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length should not exceed 500m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable.
CONNECTION ON DT50 DERIVATOR
Terminal connection board installation guide DT 50
The board is fitted with three "telephone" RJ12 plugs. Ensure the board is correctly connected. Standard connection is:
Connectors:
BM50 on connector 'C’,
DC50 on connector ‘A’or ‘C’,
DS50 on connector ‘B’.
Jumpers:
"Displays" are supplied directly by the Climatic board with 30Vdc. Take particular care at the path this 30V is taking when
several boards are being used.
J14 and J15 can switch on or off the direct current from the power supply:
J14 and J15 set between1-2:
Connectors ‘A’, ‘B’, ‘C’and screw connector ‘SC’are in parallel. Power is supplied to all connectors.
J14 and J15 set between2-3:
Connectors ‘B’and ‘C’are powered in parallel but connector ‘A’and screw connector SC are not.
Displays connected to these ports will not be powered.
If J14 and J15 are set in different positions the "terminal connection board" DT50 DOES NOT WORK and so the
connected displays do not operate.
-
+
GND
VL
DC50
DT50
1
1
2
2
4
4
3
3
Ferrite

WIRING CONNECTIONS
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Ferrites Protection of Display
To avoid the appearance of disturbances HF, which can cause the destruction of components in the displays, you must
equip the cable with a ferrite when installing it (provided by Lennox).
COMMUNICATION MASTER / SLAVE
The intercard bus (pLan) is connected to Climatic™50 on the J11 connector of board BM50.
A star connection is not recommended, for an optimum operation it is advised to connect amaximum of two cables per unit.
Connection must be carried out by the following cable:
Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.
Cable length up to 500m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length should not exceed 500m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable.
Warning:
The power 24Vac of boards BM50 should not be connected to the earth.
DT50
Remote
D
C
50
BM
50
FERRITE N°1
FERRITE N°2

WIRING CONNECTIONS
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BMS COMMUNICATION
The communication bus is connected to Climatic™50 Serial Card daughter board on the BM50.
A star connection is not recommended, for an optimum operation it is advised to connect a maximum of two cables per unit.
In case of RS485bus, a resistance of 120Ω 1/4W can be connected on the last unit between the terminals + and -.
Connection must be carried out by the following cable:
Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.
Cable length up to 1000m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length should not exceed 1000m.
For a better electromagnetic protection, LENNOX recommends the use of LiYCY-P cable.

CONFIGURATION
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Function
LENNOX© proposes a parametric designed software for the NEOSYS chillers & Heat pumps ranges.
For a first use, before any operation of the unit, Climatic™50 must be set with parameters in accordance to the range, the
size and the various options of the unit.
Description
The unit configuration is done with following menus (refer also to Menu Tree chapter):
(3811)Unit range choice,
[NAC] NEOSYS, air/water (cooling only),
[NAH] NEOSYS, air/water reversible (heat pump),
[NSR] Non standard request unit.
(3812)Unit size choice,
NAC NAH
NAC 200 STD NAH 200 STD
NAC 230 STD NAH 230 STD
NAC 270 STD NAH 270 STD
NAC 300 STD NAH 300 STD
NAC 340 STD
NAC 380 STD
NAC 420 STD
NAC 480 STD
(3813) Unit with or without Electronic Expansion valve,
(3821) Evaporator pumps configuration (No, single or double),
(3822) Installation glycol percentage,
(3823) Option free Cooling or not,
(3824) Option heat recovery or not,
(3825) Option power factor correction or not,
(3831), (3832), (3833), (3834) Parametric digital output configuration of extension board BE50 1 to 4,
(3841), (3842), (3843), (3844) Parametric digital input configuration of extension board BE50 1 to 4,
(3851), (3852), (3853), (3854) Parametric analog input configuration of extension board BE50 1 to 4,
(3861) Restore the standard Lennox settingsor not (This parameter don’t modify the settings (38xx),

SCHEDULING –CLOCK SETTING
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CLOCK SETTING
Function
Climatic™50 has a real time clock board, allowing dates and hours functionalities (weekly program, event recording,…).
Description
Menus (3121)to (3125)give the possibility of setting the internal clock.
The day of the week is calculated by Climatic™50.
For the countries of the Euro, the controller allows the automatic swing of the hour summer in hour winter and vice versa.
This functionality can be cancelled by menu (3126).
(3121) Hour,
(3122)Minute,
(3123)Day of the month,
(3124)Month,
(3125)Year,
(3126)Enable automatic switch summer time / winter time.
SCHEDULING
Function
Controlling operation of the unit according to the time and day.
Description
Climatic™50 can handle 4 time zones over the 7 days of the week:
Zone unoccupied « Night »,
Zone A «Day A»,
Zone B «Day B»,
Zone C «Day C»,
Starting time (hours and minutes) of each of these zones for each days of the week, can be set using menus (3211)to
(3214), (press ‘PRG key to change day).
Each set point integrates the hour and minute’s adjustment, thus a value of 8.3 equal 8.30 a.m.
(3211)Hour, minute of the night starting time (unoccupied)
(3212) Hour, minute of the “day A” starting time
(3213)Hour, minute of the “day B” starting time
(3214)Hour, minute of “day C” starting time
8h00 12h00 13h50 20h30 22h00
Monday Unoccupied Z :A Z :B Z :C Unoccupied
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

SCHEDULING –CLOCK SETTING
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For each time zone, the set following set points following can be modified:
LIST SET POINT BY ZONE Code DISPLAY
CONFORT DISPLAY MAINTENANCE
Change over control
Cooling / Heating priority (3311) Yes Yes
Water temperature
Cooling Water T° Set point A (3321) Yes Yes
Cooling Water T° Set point B (3322) Yes Yes
Cooling Air Ambient T° Set point A (3323) Yes Yes
Cooling Air Ambient T° Set point B (3324) Yes Yes
Heating Water T° Set point A (3331) Yes Yes
Heating Water T° Set point B (3332) Yes Yes
Heating Air Ambient T° Set point A (3333) Yes Yes
Heating Air Ambient T° Set point B (3334) Yes Yes
Compressor enable
Enable compressor on circuit N°1 (3411) Yes Yes
Enable compressor on circuit N°2 (3412) Yes Yes
Fan condensing
Fan Mode Set point (3611) Yes Yes
Low Noise Value Set point (3612) Yes Yes
Cooling water pump(s)
Enable pump(s) (3711) Yes Yes
Programming
Beginning of zone; each day Yes Yes
Start Uno (3211) Yes Yes
Start z.A (3212) Yes Yes
Start z.B (3213) Yes Yes
Start z.C (3214) Yes Yes
With the DS50, for each set point, press on the key `PRG to change the periods and to validate the good set point for the
good zone.
Note: “Monday” is considered as the first day of the week for programming the CLIMATIC™50.
Factory settings:
“Day A” activated from Monday to Saturday 6h22h
Night mode (unoccupied) for the remaining of time, Sunday included

CUSTOMIZED INPUT/OUTPUT
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Function
The Climactic™50 main board (BM.50)and the optional expansion board (BE.50) offers possibilities to
customize some input / output for remote control of the unit. So it is possible to customize:
5 digital outputs NC or NO set up with parameters (3841), (3842), (3843) and (3845),
6 digitals inputs set up by parameters (3851), (3852), (3853)and (3854),
4 analogical inputs (4-20mA or Lennox NTC temperature probe), set up with parameters (3861), (3862),
(3863) and (3864).
Description
The wiring connection between the BM.50 and the BE.50 is described on the following figure:
The various possibilities of customized inputs / outputs functions can be configured as follow:
Please, respect the wiring connections warning before connect the free input/output.
(cf. “WIRING CONNECTIONS” section).
DIGITAL OUTPUTS NC orNO –DRY CONTACTS
Electrical characteristics: Maximum commutable power: 2000VA, 250Vac.
The corresponding between the connectors and the settings is:
(3831) Setting for the digital output on the connector BE50-J5-NO1,
(3832) Setting for the digital output on the connector BE50-J6-NO2,
(3833) Setting for the digital output on the connector BE50-J7-NO3,
(3834) Setting for the digital output on the connector BE50-J8-NO4.
The following items can be used for each output:
[Not Used.] Contact not used,
[C.1 Alarm] Alarm on circuit N°1,
[C.2 Alarm] Alarm on circuit N°2,
[Fans Al.] Alarm on the condensing fan,
[Pump Al.] Alarm on the pump,
[Flow Al.] Alarm on the flow rate,
[Heat. Mode] Unit operating in heating mode (Reversible unit only),
[C.1 100%] Circuit N°1 running at full load (compressors),
[C.2 100%] Circuit N°2 running at full load (compressors),
[U. 100%] Unit running at full load (Circuits N°1&2),
[U. On] Unit ready to start,
[Z:A] Unit operating Zone A,
[Z:B] Unit operating Zone B,
[Z:C] Unit operating Zone C,
[Uno] Unit operating Zone Unoccupied,
[Bms] Unit operating Zone BMS,
[Free] Free for BMS acting,
[Elec.H.] Electrical heaters (up to 4) (Reversible unit only).
Free Dry Contact
Example
BE50-J5.NO1
6
7
BE.50
BM.50
tLAN(+)
tLAN(-)
Power
Supply
BE.50

CUSTOMIZED INPUT/OUTPUT
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DIGITAL INPUTS –DRY CONTACTS
Electrical characteristics: 24Vac or 24Vdc, 50/60Hz.
The corresponding between the connectors and the settings is:
(3841) Setting for the digital output on the connector BM50-J8-ID13,
(3842) Setting for the digital output on the connector BM50-J8-ID14,
(3843) Setting for the digital output on the connector BE50-J4-ID1,
(3844) Setting for the digital output on the connector BE50-J4-ID2,
(3845) Setting for the digital output on the connector BE50-J4-ID3,
(3846) Setting for the digital output on the connector BE50-J4-ID4.
The following items can be used for each input:
[Not Used] Input not used,
[Sw Setpoint] Switch to the second cooling / heating set point,
[Sw Cool.]Switch the unit to the cooling mode,
[Sw Heat.]Switch the unit to the heating mode,
[C1 Disable]Disable the circuit N°1 (all compressors),
[C2 Disable] Disable the circuit N°2 (all compressors),
[Circ.1-Cp.1]Disable the compressor N°1 on the circuit N°1,
[Circ.1-Cp.2]Disable the compressor N°2 on the circuit N°1,
[Circ.1-Cp.3]Disable the compressor N°3 on the circuit N°1,
[Circ.2-Cp.1]Disable the compressor N°1 on the circuit N°2,
[Circ.2-Cp.2] Disable the compressor N°2 on the circuit N°2,
[Circ.2-Cp.3] Disable the compressor N°3 on the circuit N°2,
[Z:A] Unit operating Zone A,
[Z:B] Unit operating Zone B,
[Z:C] Unit operating Zone C,
[Uno] Unit operating Zone Unoccupied,
[Bms] Unit operating Zone BMS,
[Free] Free for BMS system information,
[Elec.H.] Electrical heaters fault (Reversible unit only).
ANALOG INPUTS
Electrical characteristics: The analog input on the same connector J9 (B1 and B2) must use the same type of signal (4/20mA
or NTC). As well, the analog input on the same connector J10 (B3 and B4) must use the same type of signal (4/20mA or
NTC).
The corresponding between the connectors and the settings is:
(3851) Setting for the analog input on the connector BE50-J9-B1,
(3852) Setting for the analog input on the connector BE50-J9-B2,
(3853) Setting for the analog input on the connector BE50-J10-B3,
(3854) Setting for the analog input on the connector BE50-J10-B4.
The following items can be used for each input:
[Not Used] Not used,
[S.P Water] Water set point 4-20mA signal,
[S.P Offset] Water set point offset 4-20mA signal,
[Free NTC] Free temperature probe connection.
Example
BE50-J9.B1,
BE50-J9.B2
4/20mA
Signal
-
+
NTC
Probe
Free Dry
Contact
Example
BE50-J4.ID1
6
7

CUSTOMIZED INPUT/OUTPUT
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Water set point cooling / heating 4-20mA signal:
The 4-20mA signal sent to the unit is linearly converted using the 2 water temperature set points. To increase the precision,
you can customize 2 range of water set point according to the cooling or heating mode operating.
Water set point offset 4-20mA signal:
The 4-20mA signal sent to the unit is linearly converted using a -5K to +5K range of temperature set point.
Free temperature probe connection:
Lennox NTC sensor: The measured value will be displayed on following addresses (2171), (2172), (2173)or (2174).

STANDARD INPUT/OUTPUT
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Function
The Climactic™50 main board (BM.50) offers free dry contactsto control the unit. These free dry contacts are
connected directly to terminals (orange colour) identified as follow:
[824 - 825] : 24V relay customers power supply (Option),
[826 - 827] : 24V power ON the unit (Option),
[804 - 805] : Remote alarm reset (NC = Enable Reset),
[808 - 809] : Water evaporator customer flow switch,
[890 - 891] : Remote ON / OFF of the unit.
[870 –871 - 872] : Alarm relay (NC = Alarm OFF).
Connection
The following figure described how to connect the free dry contacts of Climactic™50.
For the contacts [824 - 825] and [826 - 827], refers to the electrical diagram.
Remote ON / OFF
Open = Unit OFF
Closed = Unit ON
890
891
Remote Reset Alarm
Open = Reset OFF
Closed = Reset ON
The reset is enable only on a
positive front edge of the signal ( ).
804
805
Water Evaporator Flow Switch
Open = Flow OFF
Closed = Flow ON
808
809

CONFIGURATION OF THE BM50 pLAN ADDRESS
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Function
It may be necessary to change the address of the BM50 card on the pLan network –mainly in the case of Master/Slave
installation. To do this, use the following procedure:
Description
Set the address of the DS/DC50 display to 0:
Sds.1
Sds.2
Changing the address of BM50
Sds.3
Sds.4
Access the configuration mode by pressing the buttons  ,
for at least 5 seconds until the Sds.1 screen appears:
Press buttonto position the cursor over the ‘Setting’ line
With the or button, set the address of the display to 00 (instead of the
standard value of 32) and confirm with button
The Sds.2 screen appears.
Switch the power supply to the BM50 card off, then on again after 5 seconds.
When the Sds.3 screen appears, press, the ‘Alarm’ and buttons
for 5 seconds.
The Sds.4 screen appears.
Press the buttonto position the cursor over the ‘pLan address’ line. With
button or  set the desired pLan address (1 to 12) and confirm with button
.

ALLOCATION OF DISPLAYS TO THE BM50
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Function
Ensure there is a good connection between the BM50 and its displays
Description
For each Climatic™50 card the following setting must be made using the DS50.
Disconnect the pLan bus at J10 and J11 and connect the DS50, directly to J10 of the BM50;
Sds.1
Sds.5
Sds.6 (for the DC50)
Access the configuration mode by pressing buttons  ,
for at least 5 seconds until the Sds.1 screen appears:
Press the button to position the cursor over the ‘Setting’ line
Press button again to position the cursor over the ‘I/O board adress’ line
With button or replace ‘- -‘ with the address of the BM50 connected
and confirmed with button
The Sds.5 screen appears.
Press button
The Sds.6 screen appears.
The field "P:XX " shows the selected pLan address. In this example the value
"01" has been selected.
The fields in the "Adr" column represent the addresses of the terminal
displays associated with this BM50, while the "Priv/Shared" column indicates
the status of the selected terminal.
Pr: Private
Sh: Shared
Sp: Shared Printer (N/A)
Move the cursor from field to field using button
Select the value desired using button or.
To exit the configuration procedure and save the data, select the "OK?No",
field, choose "Yes" using buttons or and confirm by pressing
Trm1 is reserved to allocate the DC50 to the BM50.
Its value differs depending on the pLan address of the BM50
(See the opposite table)
Its status is always ‘Pr’
Trm3 is reserved to allocate the DS50 to the BM50.
Its value is always 32
Its status is always ‘Sh’
pLan address
of the BM50 Trm1 DC50
1 17 pr
2 18 pr
3 19 pr
4 20 pr
If the terminal remains inactive (no button is pressed) for 30 seconds, the configuration procedure is aborted automatically.

DC50 COMFORT DISPLAY
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Function
This display is connected remotely; it is intended for users with no technical knowledge. This display gives access to general
operating data of the unit. It does not give access to detailed operating data.
It can be used to set or change the programming of the various time periods and the temperature set point for each period.
It also has the ability to set a 3 hoursoverride and force an unoccupied mode, or any other different time periods,
for a maximum of 7 days. It displays a real time clock and the various fault signals.
Buttons
‘Prg’ Access set points ‘Up’ Access overrides or increase values
‘Clock Access the clock ‘Enter’, Confirms the selection
‘Esc’ Return to the previous display ‘Down’ Access overrides or decrease values
Brightness/Contrast
The display has a set contrast, but this can be adjusted manually. For manual adjustment of the contrast, press the ‘Prg’ and
‘Clock buttons simultaneously and press buttons or to increase or reduce the contrast.
Configuration of the terminal address
Sdc.1 The address of the terminal DC50 must be checked after having
switching on the card.
Access the configuration mode by pressing buttons
 simultaneously for at least 5 seconds, until the Sdc.1
screen appears.
Press the ‘Enter’ buttonto position the cursor over the ‘Setting’ line
With button or set the address of the display. See table
below for the DC50, then confirm with button
pLan address
with
BM50 connected DC50 Address
1 17 (local display)
21 (remote display)
2 18 (local display)
22 (remote display)
3 19 (local display)
23 (remote display)
4 20 (local display)
24 (remote display)

DC50 COMFORT DISPLAY
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Sdc.2 The Sdc.2 screen appears.
If after 5 seconds the display is not correct;
Return to the configuration mode by pressing buttons
 simultaneously for at least 5 seconds until the Sdc.1 screen
appears.
Press buttonto position the cursor over the ‘Setting’ line
Press, the button again to position the cursor over the ‘I/O board
address’ line
With the button or replace ‘- -‘ with the address of the BM50
connected and confirm with button
Then repeat the procedure “Allocation of Displays to the BM50”
Main screen
Sdc.3 On the first line, as a double display:
Outlet temperature
On the second line:
Outside air temperature
Current time period (Z:A, Z:B, Z:C, Uno)
Mode of operation (Heat, Dead or Cool)
3 Hours override
This function can be used to override either the desired outlet temperature for 3 hours.
Sdc.3
Sdc.4
If an override is active, the time period display is alterned with the
‘Ove’ symbol.
The ‘Esc’ button is used to cancel the override mode.
From the main screen, press button or 

Screen Sdc.4 is used to change the override values
The present time period is shown on the 2nd line. This period will remain fixed
for 3 hours.
Press
to position the cursor over the ‘Water SP’ line
With button or to set the desired temperature and confirm with the
‘Enter’ button.
Press to position the cursor over the ‘Mode SP’ line
With button or to set the desired mode and confirm with button
The DC50 returns to the main display.
A single press on the ‘Esc’ button cancels the changes and returns to the
main screen.
1 week override
This function overrides the operating periods for a maximum of 7 days.
Sdc.5
From the Sdc.3 screen, press button twice to position the cursor over the
‘Override a period’ line
With button or set theperiod desired and confirm with button.
The Sdc.5 screen appears.
With button or set the daysof the week to the period desired and confirm
with button.

DC50 COMFORT DISPLAY
CLIMATIC™50 –Chiller / Heat Pump –Customer version Page 19
CL50-CHILLER-IOM_CUST-0808-E
In this example, the unit will remain in
the unoccupied period on Tuesday when confirmed until midnight on Thursday.
It will revert back to the main screen after 15 seconds without any activity.
Clock Menu
These screens are used to display and change the time and date on the BM50.
Sdc.6
From the main screen, press the ‘clock’ button
The Sdc.6screen displays the time and date.
To change the time or date:
Pressto position the cursor over the time.
With button or  set the time and confirm with button 
Position the cursor over ‘minutes’.
With button or  set the minutes and confirm with button 
Position the cursor over ‘month’.
With button or set the month and confirm with button
Position the cursor over ‘year’.
With button or  set the year and confirm with button 
Position the cursor over ‘hours’.
Pressing the ‘Esc’ returns to the main screen
It will revert back to the main screen after 15 seconds without any activity.
“Programming” Menu
These screens are used to display and change the set points of the BM50 for each time period.
Sdc.7
Sdc.8
Sdc.9.a
From the main screen, press the "Prg" button,
Screen Sdc.7displays the menu.
With button or to select the “Setting” item and confirm with button.
Pressing the ‘Esc’ returns to the main screen.
The next screen display the unit status for each zone by pressing on the "Clk"
button.
From the Sdc.8 screen; press the ‘Prg’ button
Screen Sdc.9.a displays the change over mode.
Position the cursor over “Mode”
With button or  set the desired mode for period A and confirm with
button.
With button or  set the winter outside temperature the period A and
confirm with button.
With button or  set the summer outside temperature the period A and
confirm with button.
Press the button ‘Clk’ to change the time period.
Repeat the procedure for each time period (Z:A, Z:B, Z:C, Uno).