Hubbard Systems LITEAIR LE R410A User manual

Qui k start up pro edure
V1.1 11-12-2015
LE R410A
with heater
LE COOLING STORAGE UNIT
LE/LC R410A SYSTEM
OPERATING
INSTRUCTIONS
ECA Qualified

Qui k start up pro edure
This Quick Start up section is designed to get you up and running with the minimum of fuss. Just follow these 5 simple steps.
Notes:
1 All probes must be of the same type, either PTC or NTC;
2. Probes must be at between - 50 to 60°C for auto recognition to work;
3. If 1 minute expires before you have completed quick set up, either turn OFF / On power to start set up again or enter
parameter as per the instructions and adjust your parameter settings manually (see Section 9).
Table 1: parameter “tC’ settings
Not: “tC” settings 3, 4, 5 and 6 use lectrical defrost as default. Hot Gas is possible by setting parameter “tdF” for gas defrost.
Settings 1,2,3, and 7 do not require that the 2nd and the 3rd probe to be fitted. YTake note of the number of probes to be connected
for the selected application. lectrical / Hot Gas defrost, time initiated / temperature terminate
As you change parameter tC, defaults change and should be approximately correct for that application but we strongly
recommend you check all parameter default values listed in these instructions to ensure they suit your application and
make further adjustments if necessary. Read the following sections for information about programming.
ST P 1 Install the Universal-R, connect the correct number of probes and connect
the wiring - See below:
1. Table 1: parametertC settings
2. Section 5: Typical connections
ST P 2 Turn on power,
TH N WITHIN 1 MINUT COMPL T ST PS 3, 4 AND 5.
ST P 3 Press the “DOWN” keyfor 3 seconds and the controller will automatically
recognise and adjust itself to the type of probe connected. (The display
briefly shows tPd followed by ntC or PtC).
ST P 4 Press the “AUX/tc” key for 3 seconds and the setting of parameter tC is
displayed. Use the UP or DOWN keys to adjust to required setting then
confirm by pressing S T (see table 1 below).
ST P 5 Press S T for 3 seconds until the °C or °F icon starts to flash, then adjust
the S T POINT using the UP or DOWN keys, then press S T again to
confirm.
LE R410a Operating Instru tions
V1.1 11-12-2015
Parameter Type of Control Required
tC probes
1 On / Off thermostat - Cooling x1
2 Off cycle defrost (timed) x1
3 lectrical / Hot Gas defrost, time initiated / time terminated x1
4 lectrical / Hot Gas defrost, time initiated / temperature terminated x2
5 lectrical / Hot Gas defrost, time initiated / temperature terminated + evap. fan delay x2
6 Double evaporators applications (similar to setting 5) x3
7 On / Off thermostat - Heating x1

Button and their fun tions
Programming mode
To enter programming level Pr1 (user programming level), keep both S T and DOWN buttons pressed for 3 sec. The first parameter
label will appear. Browse parameter list by using the UP or Down buttons. Press S T to see a parameter’s current value and UP or
Down buttons to alter its value. Press Set to confirm change (the display will blink for 3 sec and then the next parameter will appear)
or by waiting for the menu timeout to expire (15 sec). If no parameter is available for change in Pr1 level, a noP label will be shown.
First enter Pr1 level(as described above) then with any parameter label displayed keep both S T and DOWN buttons pressed for 8
sec. The first parameter label will appear. Browse parameter list by using the UP or DOWN buttons. Press S T to see a parameter’s
current value and UP or DOWN buttons to alter its value. Press S T to confirm change (the display will blink for 3 sec and then the
next parameter will appear) or by waiting for the menu timeout to expire (15 sec).
From Pr2 level it is also possible to add or remove any parameter to / from Pr1 by pressing both S T and DOWN while its label is
displayed. Accessibility of any particular parameter via Pr1 level is confirmed by the alarm L D lighting up while its label is
displayed.
WARNING: If no button is pressed for 15 sec, any modified value will be stored into memory and the controller will return to the
normal display mode.
BUTTON FUNCTION
Type Controller menu: Keep this button pressed for at least 3 sec within 1 min after power on to enter the “Type Controller Menu” (tC)
AUX output control: Switches the AUX relay output (if enabled as such).
Manual Defrost: Keep this pressed for 3 seconds to start a manual defrost cycle. The defrost icon will illuminate. (Not possible if
parameter tC = 1 or 7).
Display current set point: After pressing and releasing this button, the set point will be displayed for 5 sec. This will not allow the set
point to be altered.
Changing set point value: Keep this button pressed for at least 2 sec. Set point change mode is entered indicated by the small led’s
flashing. Change the set point using the UP and DOWN buttons. The new value can be stored either by pressing S T button (the
instrument restores temperature display) or by waiting the exit time-out to expire (15 sec).
(UP): To see the max stored temperature; in programming mode it browses the parameter codes or increases the display value.
(DOWN): To see the min stored temperature; in programming mode it browses the parameter codes or decreases the display value.
Keep press 3 sec just after powering on the device (and within the first 60 sec) to start automatic probe recognising.
Keep pressed 2 sec to switch the instrument off when the parameter onF = 1.
LE R410a Operating Instru tions
V1.1 11-12-2015
SINGL BUTTON FUNCTIONS
BUTTON COMBINATION FUNCTIONS
US R PROGRAMMING L V L - PR1
PROT CT D PROGRAMMING L V L - PR2 (ALL VISIBL PARAM T RS CAN B FOUND H R )
COMBINATION FUNCTION
Lock and unlock the keyboard: Keeping both buttons pressed for 3 sec will lock or unlock the keyboard.
The display will flash PoF or Pon for a few seconds to confirm locking or unlocking respectively.
nter programming mode: Keep both buttons pressed for 3 sec. release them and then press again for 8 sec.
The first label of Pr2 level will be displayed.
xit programming mode: Press together to return to normal display.

Other features of the Controller
As well as the main digital display, there are some small icons on the front panel.
These are used to monitor the loads controlled by the instrument. ach icon
function is described in the following table.
Display signalling description
Thermostat overide (not available when parameter tC = 1 or 7)
For rapid chilling or freezing, the thermostat can be overridden by pressing the UP button until the icon lights up. The
compressor will run in continuous mode, irrespective of temperature, for the time period set in parameter CCt. Normal operation will
then resume automatically. The cycle can also be terminated manually by pressing the UP button again for about 3 seconds.
Defrost types
tdF = 0: Defrost is electrical.
tdF = 1: Defrost is by hot gas.
Evaporator fan ontrol (only when parameter tC = 5 or 6)
The fan control mode is selected by means of the “FnC” parameter
(*) Note: Fans will stop if the temperature value set in parameter “FSt” is exceeded.
ICON FUNCTION M ANING
ON Light (AUX) output enabled.
ON Cooling enabled
FLASHING Anti-short cycle delay in progress.
ON Fan enabled.
FLASHING Delay time on fan activation is running (Fnd > 0).
ON Defrost in progress.
FLASHING Drip time in progress (Fdt > 0) or delay on start defrosting is running (dSd > 0).
ON Auxiliary output activated.
ON nergy Saving activated.
ON Thermostat overide enabled.
ON ALARM signal: When in programming mode and in Pr2 level, this lights up notifying this parameter is also accessible in the
Pr1 level.
ON All measurement units are in Celsius degrees.
FLASHING Programming mode.
ON All measurement units are in Fahrenheit degrees.
FLASHING Programming mode.
LE R410a Operating Instru tions
V1.1 11-12-2015
tC parameter value Action
1 or 7 No defrost.
2 Off cycle defrost by timer.
3, 4, 5 or 6 Forced type of defrost: lectrical or Hot Gas.
FnC parameter value Action
0 Fans will cycle ON and OFF with the compressor and be off during defrost cycle.
1 Fans will run continuously, but be off during defrost cycle.
2 Will switch ON and OFF with the compressor and be on during defrost cycle (*).
3 Fans will run continuously and be on during defrost cycle (*).

Parameter FSt sets the fan stop temperature. This is the maximum temperature, detected by the evaporator probe, above which the
evaporator fans will stop.
Leave FSt above ambient temperature during commissioning to avoid fan short cycle.
After finishing the defrost phase, there is a stand still drain time, set by parameter Fdt. When this period has expired, the
refrigeration cycle commence but the evaporator fans remain off until Fnd (fan delay) times out.
Spe ial appli ations - Dead Band Control
With [oAC = 1], the compressor relay controls cooling as normal but the 4th (auxillary) relay is used to control a heater. The value
entered in parameter HY will now be set equal on both sides of the S T POINT. xample: If [HY = 1°C] that will create a 2°C Dead Band.
At [S T POINT + HY], cooling switches on. At [S T POINT - HY], heating switches on. ither cooling or heating switch off when
temperature returns to S T POINT.
Alarms
The alarm buzzer can be muted, by pressing any button. The controller will briefly show the reset “r S” label. Parameter tbA defines
how the alarm relay will respond to the muting of the buzzer.
- tbA = 0: The alarm relay will remain active until the alarm condition is rectified.
- tbA = 1: The alarm relay de-activates when the buzzer is muted.
In either case, the display will flash an alarm label until the condition is rectified.
The Dixell Universal-R is provided with an internal watchdog verifying data and memory integrity. Alarm “ ” will flash after
detecting a failure in data or in the internal memory. In this case, the alarm output is enabled.
WHAT TO DO
1. Cancel the alarm by pressing a button.
2. Check the value of the parameters and restore correct values when wrong.
3. Check the correct instrument operation and in case of further errors replace it.
Probe alarms “P1”, “P2” and “P3” start 30 seconds after a fault in probe is detected; they automatically stop 30 seconds after the
probe restarts normal operation. Check connections before replacing the probe.
Temperature alarms “HA” and “LA” automatically stop as soon as the thermostat temperature returns to normal values and when
defrost starts. Temperature alarms “HA2” and “LA2” automatically stop as soon as the condenser temperature returns to normal
values.
Removing se urity level prote tion
It is possible to allow access to any parameter from Pr1 level. To do this, go into Pr2 as previously described. Scroll to the label of
the parameter you require and then press the S T and DOWN buttons in quick succession. The decimal point L D will be on
indicating that access to this particular parameter is now possible from Pr1 level. Its label will now appear when in Pr1
programming level and its value can be altered. To restore security level protection, use the same procedure (the decimal point L D
will go out after pressing both buttons).
LE R410a Operating Instru tions
V1.1 11-12-2015
D AD BAND CONTROL (COOLING & H ATING)
MUTING ALARM BUZZ R & R LAY
ALARM “ ”
ALARM R COV RY
Message Message - Mode Cause Outputs
Flashing Data or memory failure Alarm output ON; Other outputs unchanged.
P1 Flashing Thermostat probe failure Alarm output ON; Compressor output according to parameters Con and CoF.
P2 Alternative with room temperature vaporator probe failure Alarm output ON; Other outputs unchanged; nd defrost is timed.
P3 Alternative with room temperature Second evaporator probe failure Alarm output ON; Other outputs unchanged; nd defrost is timed.
HA Alternative with room temperature High temperature alarm Alarm output ON; Other outputs unchanged.
LA Alternative with room temperature Minimum temperature alarm Alarm output ON; Other outputs unchanged.
HA2 Alternative with room temperature Condenser max temp alarm Alarm output ON; Other outputs unchanged.
LA2 Alternative with room temperature Condenser max temp alarm Alarm output ON; Other outputs unchanged.
dA Alternative with room temperature Door open alarm Alarm output ON; Outputs re-start if parameter rrd = 1.
A Alternative with room temperature Generic external alarm Alarm output ON; Other outputs unchanged.
bAL Alternative with room temperature Serious external alarm Alarm output ON; Other outputs OFF.

Mounting
The Universal-R should be mounted in a panel, in a 29 x 71 mm hole, and fixed using the special brackets supplied. Ambient
temperature for correct operation is 0 to 50°C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt of humidity
(20 to 85% non-condensing RH is the recommended working range). Make sure air can freely circulate through the cooling holes
slots at the rear side of the controller.
Ele tri al Conne tions
The instrument is provided with screw terminal block to connect cables with a cross section up to 2.5 mm2. Before connecting
cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply
cables, from the outputs and from the power connections. Do not exceed the maximum current rating for each relay; in case of
heavier loads use suitable external relay.
Probes
It is recommended to place the thermostat probe away from rapid air streams to correctly measure the average room temperature.
Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or
from the warmest place during defrost, to prevent premature defrost termination.
Te hni al Data
Housing: Self extinguishing ABS
Size: Frontal 32 x 74 mm; depth 70 mm
Mounting: Panel mounting in a 71 x 29 mm panel cut-out
Frontal protection: IP65
Connections: Screw terminal block ? 2.5 mm2wiring
Power supply: 12Vac/dc, -10% +15%
230Vac, -10% +15%
Power absorption: 4 VA max
Display: 3 digits, red L D, 14.2 mm high
Inputs: A maximum of 3 temperature probes, PTC or NTC type
Probes (supplied): 2 x NTC, range [-40 to 105°C] with 2 metre cables
Relay outputs: Amps Resistive (Inductive)
Compressor: SPDT relay 8(3) A, 250Vac
Defrost: SPDT relay 8(3) A, 250Vac
Fans: SPST relay 7(2) A, 250Vac
Alarm: SPDT relay 8(3) A, 250Vac
Other output: Buzzer for acoustic signalling of alarms
Data storing: Non-volatile memory ( PROM)
Ambient temperature: 0 to 50°C
Ambient humidity: 20 to 85% (no condensing)
Storage temperature: -30 to 85°C (-22 to 185°F)
Operating range: PTC: -50 to 150°C (-58 to 302°F); NTC: -50 to 110°C (-58 to 230°F)
Resolution: 0.1°C or 1°F (selectable)
Accuracy at 25°C: (range -40 to 50°C) ±0.5°C ±1 digit
LE R410a Operating Instru tions
V1.1 11-12-2015

Parameter Table (and factory default settings)
IMPORTA T: Always set parameter “tC” first. As you move between settings 1 to 7, all none-relevant parameters will be masked.
After setting “tC”, it will be possible to modify all the other relevant parameters.
LE R410a Operating Instructions
V1.1 11-12-2015
WAR I G!!
Always switch the power OFF and then O at the end of the programming to update any parameter changes.
Make sure you connect the correct number of probes to suit the setting of parameter tC. Failure to do this will cause probe
alarms.
Any probe alarms can be cleared by turning off/on power.
tC setting o of Probes Type
1, 2, 3 and 7 1 Room only
4, 5 2 Room + Evaporator 1
6 3 Room + Evaporator 1 + Evaporator 2
Description Label Adjustment Range Factory defaults with parameter “tC’ 1-7
1 = On/Off Thermostat
2 = Off cycle defrost 2
3 = Time/time defrost
Type (category) of controller tC 4 = Time/temp defrost
5 = Time/temp defrost + fan delay
6 = Double evaporator defrost
7 = On/Off thermostat for heating
Set Point LS to US 10°C
Probe type PbC 0 = PTC 1
1 = TC
Differential HY 0.1 to 25.5°C 2°C
1 to 45°F
Minimum Set point LS -55°C to Set Point 5°C
-67°F to Set Point
Maximum Set point US Set Point to 150°C 25°C
Set Point to 302°F
Anti-short cycle delay AC 0 to 50 min 0
Second compressor start delay AC 1 0 to 255 sec 0
Temperature alarm configuration ALC 0 = relative to Set Point 1
1 = Absolute
High temperature alarm ALU 0 to 50°C (Rel); ALL to 150°C (Abs); 20°C
0 to 90°F (Rel); ALL to 302°F (Abs);
Low temperature alarm ALL 0 to 50°C (Rel); -55°C to ALU (Abs); 9°C
0 to 90°F (Rel); -67°C to ALU (Abs);
Temperature alarm delay ALd 0 to 255 min 0
Delay of temperature alarm at start up DAo 0 to 720 min 5
Outputs activation delay at start up odS 0 to 255 min 0
Thermostat override CCt 0 to 990 min 0
Set Point for continuous cycle CCS -55 to 150°C; 10°C
-67 to 302°F
Defrost delay after thermostat override dAF 0 to 255 min 15
Interval between defrosts idF 1 to 250 hours 5
Delay start of defrost dSd 0 to 255 min 0

LE R410a Operating Instru tions
V1.1 11-12-2015
Description Label Adjustment Range Factory defaults with parameter “tC’ 1-7
Maximum duration of defrost NdF 0 to 255 min 10
Defrost termination temperature dtE -55 to 50°C 30°C
-67 to 122°F
Maximum duration of defrost (second evaporator) NdS 0 to 255 min -
Defrost termination temperature (second evaporator) dtE -55 to 50°C -
-67 to 122°F
0 = real temp.
1 = Temp. at defrost start
Display during defrost dFd 2 = Set point 3
3 = “D F” label
4 = “D G” label
Defrost display time out dAd 0 to 255 min 0
Defrost type (forced) tdF 0 = lectrical 0
1 = Hot Gas
Drain down time Fdt 0 to 255 min 0
First defrost after power on dPo 1 = Immediate 0
0 = After normal interval
0 to 3
vaporator fan operating mode FnC (1 = Fan always on apart from -
during defrost. See section 10 for info.
On other settings)
vaporator fan stop temperature FSt -55 to 50C -
-67 to 122F
vaporator fan delay after defrost Fnd 0 to 255 min -
Fan ON time Fon 0 to 15 min -
Fan OFF time FoF 0 to 15 min -
Thermostat probe calibration ot -12.0 to 12.0°C 0°C
-21 to 21°F
vaporator probe presence P2P 0 = vaporator not present -
1 = vaporator probe present
vaporator probe calibration oE -12.0 to 12.0°C -
-21 to 21°F
Third probe presence P3P 0 = Third probe not present 0
1 = Third probe present
Third probe calibration o3 -12.0 to 12.0°C 0°C
-21 to 21°F
Display resolution rES 0 = With decimal point 1
1 = No decimal point
Temperature measurement unit (°C/°F) CF 0 = °Celsius 0
1 = °Fahrenheit
0 = Thermostat probe
Instrument display Lod 1 = vaporator probe 0
2 = Third probe
3 = S T-POINT
Display delay dLy 0 to 20 min 0 sec, res 10 sec 0
Type of action CH 0 = Cooling 0
1 = Heating
Compressor ON time with faulty probe Con 0 to 255 min 15
Compressor OFF time with faulty probe Cof 0 to 255 min 30
Alarm muting configuration for buzzer & relay tbA 0 = Mute buzzer only 1
1 = Mute buzzer and relay

LE R410a Operating Instru tions
V1.1 11-12-2015
Description Label Adjustment Range Factory defaults with parameter “tC’ 1-7
0 = Start defrost
1 = Door switch
2 = Auxiliary relay
Digital input configuration d iC 3 = nergy saving 5
4 = Remote On/Off
5 = Generic alarm
6 = Serious alarm
Digital input polarity d iP 0 = Closed circuit 0
1 = Open circuit
0 = Start defrost
1 = Door switch
2 = Auxiliary relay
Second digital input configuration i2F 3 = nergy saving 5
4 = Remote On/Off
5 = Generic alarm
6 = Serious alarm
Second digital input polarity i2P 0 = Closed circuit 0
1 = Open circuit
Digital input delay d id 0 to 255 min 0
Digital input 2 delay d i2 0 to 255 min 0
0 = No change
Door open - compressor/fan status odC 1 = Fan off 0
2 = Compressor off
3 = Compressor and fan off
0 = Alarm relay
1 = Heater relay (for neutral zone)
Configuration of 4th relay oAC 2 = Auxiliary relay 1
3 = Second compressor relay
4 = Light out
5 = second defrost output
Alarm relay polarity AoP 0 = (11-12) closed with alarm 0
1 = (11-12) open with alarm
xclude temperature alarm - door open dot 0 to 255 min 20
Restart regulation with door open alarm rrd 0 = No 0
1 = Yes
Low temperature alarm of condenser AL2 -55 to 150°C -40°C
-67 to 302°F
High temperature alarm of condenser AU2 -55 to 150°C 110°C
-67 to 302°F
Differential for temperature condenser alarm recovery AH2 0.1 to 25.5°C 5°C
1 to 45°F
Condenser temperature alarm delay Ad2 0 to 254 min, 255 = nU 15
Condenser temperature alarm exclusion at start up dA2 0 to 720 min, res 10 min 90
Compressor off with low temperature alarm of bLL 0 = No 0
condenser 1 = Yes
Compressor off with high temperature alarm of AC2 0 = No 0
condenser 1 = Yes
Temperature deviation from normal HES -30.0 to 30°C 0°C
Set point during energy saving -54 to 54°F
0 = Disabled
ON/OFF key enabling onF 1 = nabled 0
2 = nergy saving
Buzzer enabling bEn 0 = Disabled 0
1 = nabled
Parameter table Ptb For factory use only -
Software release number rEL Read only -
vaporator probe temperature dP2 Read only -
Third probe temperature dP3 Read only -

LE R410a Operating Instru tions
V1.1 11-12-2015
Display visualisation Description
Type of controller; tells the Universal-UDS which type of controller it will be operating as.
1 = On/off refrigeration thermostat - 1 relay & 1 probe;
2 = Combined thermostat with off cycle defrost timer - 1 relay & 1 probe;
3 = Combined thermostat with time initiated & time terminated defrost - 2 relays & 1 probe;
tC 4 = Combined thermostat with time initiated & temperature terminated defrost - 2 relays & 2 probes;
5 = Combined thermostat with time initiated, temperature terminated defrost + evaporator fan control with delay after
defrost - 3 relays & 2 probes;
6 = Double evaporator operations: combined thermostat with time initiated, temperatures terminated defrost + evaporator fans
control with delay after defrost - 3 relays & 3 probes;
7 = On/off heating thermostat - 1 relay & 1 probe.
Probe type: configures the controller to work with PTC or NTC probes.
PbC 0 = PTC
1 = NTC
Differential: (0.2°C to 12.0°C) sets the degrees above Set point at which the compressor cuts in.
Note: When tC = 7 (heating applications) the tC value is automatically set below the Set Point. If the temperature decreases and
Hy reaches Set point minus differential, the regulation output is activated and then turned off when the temperature reaches the Set
point value again.
LS Minimum Set Point limit: (-55°C to S T or -67°F to S T) sets the lower limit of Set Point adjustment.
US Maximum Set Point limit: (S T to 150°C or S T to 302°F) sets the upper limit of Set Point adjustment.
AC Anti-short cycle delay: (0 to 50 min) minimum interval between the compressor stop and the next possible restart.
AC 1 Second compressor start delay: (0 to 255 sec).
Temperature alarm configuration:
0 = Related to Set Point;
ALC 1 = Absolute.
Note: Related means alarms are linked to the Set point and will follow it if it is adjusted. In this case ALU and ALL set degrees over 7
under Set Point for alarm. Absolute means ALU & ALL will set fixed alarm temperatures, that are not affected by any Set Point
adjustment.
High temperature alarm:
ALU ALC = 0 (0 to 50°C) or (0 to 90°F);
ALC = 1 (ALL to 150°C) or (ALL to 302°F).
High temperature alarm:
ALL ALC = 0 (0 to 50°C) or (0 to 90°F);
ALC = 1 (-55°C to ALU) or (-67°F to ALU).
ALd Temperature alarm delay: (0 to 255 min) time interval between an alarm condition occurring and the alarm signalling.
Delay of temperature alarm at start up: (from 0 to 720min; res. 10min) time delay of any temperature alarm during pull down
dAo following “power on”.
Parameters - Their fun tions in detail
Controller parameters in detail