nvent TE162024050 User manual

© 2018 nVent 89112276
Rev. D P/N 89112276
ThermoelecTric coolers
Te162024050 and Te162048050
INSTRUCTION MANUAL

© 2018 nVent 89112276
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NOTE: Some of the information in this manual may not apply if a special unit was ordered. If
additional drawings for a special unit are necessary, they have been inserted. Contact Pentair
Equipment Protection if further information is required.
WARRANTY AND RETURN POLICY
https://hoffman.nvent.com/en/hoffman/warranty-information
RECEIVING THE THERMOELECTRIC COOLER
Inspect the thermoelectric cooler. Check for concealed damage that may have occurred during shipment. Look
for dents, scratches, loose assemblies, etc. Damage evident upon receipt should be noted on the freight bill.
Damage should be brought to the attention of the delivering carrier -- NOT to nVent Equipment Protection -- within
15 days of delivery. Save the carton and packing material and request an inspection. Then le a claim with the
delivering carrier.
nVent Equipment Protection cannot accept responsibility for freight damages; however, we will assist you in any
way possible.
HANDLING & TESTING THE THERMOELECTRIC COOLER
TEST FOR FUNCTIONALITY BEFORE MOUNTING THE THERMOELECTRIC COOLER TO THE ENCLOSURE.
Refer to nameplate for proper electrical current requirements, then connect power cord to a properly grounded
power supply. Minimum circuit ampacity should be at least 125% of the amperage shown in the design data
section for the appropriate model. No other equipment should be connected to this circuit to prevent overloading.
Operate the thermoelectric cooler for ve (5) to ten (10) minutes. No excessive noise or vibration should be
evident during this run period. The ambient and enclosure fans should be running.
PRINCIPLES OF OPERATION
The thermoelectric cooler is congured for direct power application through the input connections on the
supplied wire harness. The thermoelectric cooler can be used for cooling or heating and is automatically
controlled by the included electronic control. Note the fan wiring will not change to match the peltier module
wiring. The fan wiring is the same regardless of whether the thermoelectric cooler is congured for cooling or
heating.
MAINTENANCE
Beyond occasional inspection for dust or dirt buildup no special maintenance should be required.
TABLE OF CONTENTS
Warranty and Return Policy.............................................................................................................................................................2
RECEIVING THE THERMOELECTRIC COOLER ..............................................................................................................................2
HANDLING & TESTING THE THERMOELECTRIC COOLER...........................................................................................................2
PRINCIPLES OF OPERATION ..........................................................................................................................................................2
MAINTENANCE................................................................................................................................................................................2
INSTALLATION INSTRUCTIONS .....................................................................................................................................................3
Design Data.....................................................................................................................................................................................................3
Dimensional Drawing .....................................................................................................................................................................................4
Wiring Diagrams .............................................................................................................................................................................................5
24V Wiring Diagram A ............................................................................................................................................................................6
48V Wiring Diagram B ............................................................................................................................................................................7
Wiring...............................................................................................................................................................................................................8
Setup................................................................................................................................................................................................................8
Operation of Electronic Control .....................................................................................................................................................................9

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INSTALLATION INSTRUCTIONS
1. Inspect thermoelectric cooler. Verify functionality before mounting the thermoelectric cooler, see
HANDLING & TESTING THE THERMOELECTRIC COOLER on page 2.
2. Using the cutout dimensions shown in this manual, prepare the air openings, and mounting bolt
hole pattern for the enclosure.
3. Remove ground screw to prevent interference with cutout during installation.
4. During installation, remove power/alarm harness and grommet from the shroud to prevent the
wires from interfering with the enclosure cutout.
5. Mount the thermoelectric cooler on the enclosure using the mounting fasteners provided.
6. Reinstall the power/alarm harness and grommet into the thermoelectric shroud.
7. Reinstall the ground screw with the customer supplied grounding cable.
8. Refer to the top of the nameplate for the electrical requirements. Connect the thermoelectric
cooler to a properly grounded power supply. Class 2 or SELV power source is required for fans.
DESIGN DATA
Model Description Voltage Full Load
Amps
Nominal
Cooling/
Heating
Watts
Maximum
Ambient
Temperature
°F / °C
Shipping
Weight
lb. / kg
TE162024050 200 Watt 24 Volt TEC No Shroud 18 – 28.8
Vdc
14.7 @ 27.6
Vdc 166 /146 131 / 55 16.9 / 7.7
TE162048050 200 Watt 48 Volt TEC No Shroud 40 - 56.7 Vdc 7.6 @ 56.7 Vdc 166 / 146 131 / 55 16.9 / 7.7

© 2018 nVent 89112276
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DIMENSIONAL DRAWING
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WIRING DIAGRAMS
NOTE: Class 2 or SELV power source is required.

© 2018 nVent 89112276
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24V WIRING DIAGRAM A

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48V WIRING DIAGRAM B

© 2018 nVent 89112276
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WIRING
Recommended wire gauges for wiring:
Power and earth ground leads14 AWG
Alarm Leads 20 AWG
Connect the controller and TEC as shown in the wiring diagrams. Use a protected power supply or inline fuse; 20
amp limit for 24 Vdc unit and 10 amp limit for 48 Vdc units. Ensure that higher potential input power conductor
is connected to the (VIN+) terminal and lower potential is connected to the (VIN–) terminal. Input power
conductors shall be no longer than 10 feet.
SETUP
Cooling and heating temperature setpoints are factory set to 77 F/25 C for cooling and 59 F/15 C for heating.
These setpoints can be changed by adjusting the 4-position dip switch on the printed circuit board assembly (S1).
See Table 1 - Cooling and Heating Setpoints.
Note: The heating function includes a disabled position.
Table 1 - Cooling and Heating Setpoints
Cooling Setpoint (°C) S1
Position 1 S1 Position 2 S1 Position 3 S1 Position 4 BLUE LED at Startup
35 ON ON
See Heating Setpoint below
Blinks 1 Time
30 ON OFF Blinks 2 Times
25 (Factory Default) OFF ON Blinks 3 Times
22.5 OFF OFF Blinks 4 Times
Heating Setpoint (°C) S1
Position 1 S1 Position 2 S1 Position 3 S1 Position 4 RED LED at Startup
15 Factory Default
See Cooling Setpoint above
ON ON Blinks 1 Time
5ON OFF Blinks 2 Times
-5 OFF ON Blinks 3 Times
No Heat OFF OFF Blinks 4 Times

© 2018 nVent
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Table 2- Design Data Electronic Control
Technical Data Part Number
TEC24CNTLRN TEC48CNTLRN
Rated Voltage (VDC) 24 48
Operating Range (VDC) 18 to 30 40 to 60
Maximum Current @ Rated Voltage (Amps) 17.2 8.6
Operating Temperature (°F/°C) -40 to +149/ -40 to +65
Alarm Contact Rating
1) 0.5 A max @ 24 VDC - from
same source of power as unit,
SELV, non-power limited (greater
than 15 W);
OR
2) 0.5 A max @ 24 VAC - from
SELV, Class 2 safety isolating
transformer.
1) 0.5 A max @ 48 VDC - from
same source of power as unit,
SELV, non-power limited (greater
than 15 W);
OR
2) 0.5 A max @ 24 VAC - from
SELV, Class 2 safety isolating
transformer.
Temperature Accuracy (°F/°C) ±3.6/2
High Temperature Alarm (°F/°C) 27/15 above cooling setpoint
Low Temperature Alarm (°F/°C) * 18/10 below heating setpoint,
N/A if heating is disabled.
* If heating is disabled, there is no low temp alarm.
OPERATION OF ELECTRONIC CONTROL
Each time power is applied, the controller will step though a start-up sequence. This consists of indicating the
current cooling and heating settings, and turning on the cooling and heating function such that proper operation
of the TEC can be veried. The sequence is as follows:
1. The blue cooling LED blinks for a half second ON and half second OFF for the appropriate number
of times (see Table 1 - Cooling and Heating Setpoints).
2. The red heating LED blinks for half second ON and half second OFF for the appropriate number of
times (see Table 1 - Cooling and Heating Setpoints).
3. The TEC ramps up in cooling mode for 5 seconds. The blue cooling LED ashes rapidly.
4. The TEC ramps up in heating mode for 5 seconds. The red heating LED ashes rapidly.
The controller will command the TEC to cool if the temperature read by the thermistor is above the cooling
setpoint, and to heat if the temperature is below the heating setpoint. If heating is called for, the controller will
automatically reverse the DC voltage to the TE modules. During cooling, H+ is a higher potential than H-. During
heating, H- is a higher potential than H+. The controller logic will slowly ramp power to the peltier chips. If the
temperature read by the thermistor is between the cooling and heating setpoints, the controller will be in a
standby mode with no power applied to the TEC modules.
The normally open (NO) alarm dry contact will close when an alarm occurs, including loss of power. The normally
closed (NC) contact will open when an alarm occurs.
Table 3 - LED and alarm connection status
Status Red Blue Com-NO Com-NC
OFF OFF OFF Closed Open
Start up sequence - see Table 1 - Cooling and Heating Setpoints Flashes Flashes Toggles Toggles
ON – Standby OFF OFF Open Closed
ON – Cooling OFF ON Open Closed
ON – Cooling/High Temp Alarm Flashing ON Closed Open
ON – Heating ON OFF Open Closed
ON – Heating/Low Temp Alarm ON Flashing Closed Open
ON – Temp Sensor Failure Flashing Flashing Closed Open

© 2018 nVent 89112276
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NOTES

© 2018 nVent
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NOTES

© 2018 nVent 89112276
Rev. D P/N 89112276
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