nvent T62 User manual

© 2019 nVent 88047465
Rev. H P/N 10-1008-239
T-SERIES
Air Conditioner
t62 Model
INSTRUCTION MANUAL

© 2019 nVent 88047465
- 2 -
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 nVent
Equipment Protection if further information is required.
WARRANTY AND RETURN POLICY
https://hoffman.nvent.com/en/hoffman/warranty-information
TABLE OF CONTENTS
WARRANTY AND RETURN POLICY................................................................................................................................................ 2
RECEIVING THE AIR CONDITIONER............................................................................................................................................... 3
HANDLING AND TESTING THE AIR CONDITIONER...................................................................................................................... 3
INSTALLATION INSTRUCTIONS..................................................................................................................................................... 4
Design Data..................................................................................................................................................................................................... 4
How to Read Model Numbers ....................................................................................................................................................................... 4
Dimensional Drawing ..................................................................................................................................................................................... 5
Mounting Cutout Dimensions........................................................................................................................................................................ 5
TECHNICAL INFORMATION............................................................................................................................................................ 6
Sequence of Operation................................................................................................................................................................................... 6
Heating .................................................................................................................................................................................................... 6
Cooling..................................................................................................................................................................................................... 6
Standard and Optional Component Operation............................................................................................................................................. 6
Thermostat.............................................................................................................................................................................................. 6
Dual Pressure Control ............................................................................................................................................................................ 6
Time Delay Relay..................................................................................................................................................................................... 6
Head Pressure Control........................................................................................................................................................................... 6
Contactor................................................................................................................................................................................................. 7
Transformer............................................................................................................................................................................................. 7
Refrigerant Properties Chart (R407c) ........................................................................................................................................................... 7
Unit Characteristics ........................................................................................................................................................................................ 8
Functional Data............................................................................................................................................................................................... 8
Wire Diagram................................................................................................................................................................................................... 9
SERVICE DATA ............................................................................................................................................................................... 10
Component List ............................................................................................................................................................................................ 10
MAINTENANCE............................................................................................................................................................................................. 11
Compressor........................................................................................................................................................................................... 11
Condenser and Evaporator Blower Motors ........................................................................................................................................ 11
Refrigerant Loss.................................................................................................................................................................................... 11
TROUBLE SHOOTING ....................................................................................................................................................................12
Basic Air Conditioning Trouble Shooting Check List................................................................................................................................. 12
Symptoms and Possible Causes: ............................................................................................................................................................... 13
F-GAS INFORMATION....................................................................................................................................................................13

© 2019 nVent
88047465 - 3 -
RECEIVING THE AIR CONDITIONER
Inspect the air conditioner. Check for concealed damage that may have occurred during shipment. Look for dents,
scratches, loose assemblies, evidence of oil, 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 AND TESTING THE AIR CONDITIONER
If the air conditioner has been in a horizontal position, be certain it is placed in an upright, vertical or mounting
position for a minimum of ve (5) minutes before operating.
Do not attempt to operate the air conditioner while it is horizontal
or on its side, back or front. The refrigeration compressor is lled
with lubricating oil. This will cause permanent damage to the air
conditioner and also voids the warranty.
CAUTION
TEST FOR FUNCTIONALITY BEFORE MOUNTING THE AIR CONDITIONER TO THE ENCLOSURE.
Refer to the nameplate for proper electrical current requirements, and then connect the 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.
Immediately after applying power the evaporator blower (enclosure air) should start running. Operate the air
conditioner with the compressor running for ve (5) to ten (10) minutes.
Condenser air temperatures should be warmer than normal room temperatures within a few minutes after the
condenser air blower starts.
The compressor is provided with automatic reset thermal overload protection. This thermo-switch is located
and mounted inside the plastic enclosure clipped to the compressor. The switch operates when the compressor
overheats due to clogged or dirty inlet air lter or if ambient air temperatures exceed nameplate rating or if
enclosure dissipated heat loads exceed the rated capacity of the air conditioner. The thermal overload switch
will actuate and stop compressor operation. The blowers will continue to operate and the compressor will restart
after it has cooled to within the thermal overload cut-in temperature setting.

© 2019 nVent 88047465
- 4 -
INSTALLATION INSTRUCTIONS
1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See
HANDLING AND TESTING THE AIR CONDITIONER on page 3.
2. Using the mounting gasket kit provided with the unit, install gaskets to the air conditioner. See
Mounting Cutout Dimensions on page 5 of this manual.
3. Mount air conditioner on enclosure taking care not to damage the mounting gasket. The
mounting gasket is the seal between the air conditioner and the enclosure. Avoid dragging the air
conditioner on the enclosure with the mounting gasket attached as this could cause rips or tears
in the gasket and risk losing the water tight seal.
4. To avoid cross-threading mounting inserts, start bolts by hand before tightening with a wrench or
ratchet driver.
5. Allow unit to remain upright for a minimum of ve (5) minutes before starting. Caution! Air
conditioner must be in upright position during operation.
6. Refer to the nameplate for electrical requirements. Wire the unit to a properly grounded power
supply. Electrical circuit should be fused with slow blow or HACR circuit breaker.
7. The air conditioner requires a remote mounted thermostat and has an alarm feature. Wire the
thermostat and alarm outputs to the appropriate terminals on the 24VAC terminal strip (note
locations on the wiring diagram).
8. Set thermostat for required cabinet temperature. See Standard and Optional Component
Operation on page 6.
DESIGN DATA
Model Voltage Hz Full Load
Amps Phase BTU/Hr. @
Max Ambient
Temperature
Max Ambient
Temperature
(°F/°C)
Shipping
Weight
(lb./kg)
T6222263XXX 230 50/60 15.4/17.0 120,500/23,500 131/55 218/99.1
-XXX will be replaced with a three-digit number designating all desired options. Consult the factory for specic model numbers.
HOW TO READ MODEL NUMBERS
T62 -22 2 6 -G150
1 2 3 4 5
1. Identies the type/family of air conditioner and the approximate height (i.e. T62 = Outdoor family
about 62” high).
2. This is the air conditioner’s listed capacity in Btu/hr at rated conditions. (i.e. 22 = 22,000 BTU/Hr.
at 131/131 F)
3. 1 = 115 Volt, 2 = 230 Volt, 4 = 460 Volt.
4. 6 = 50/60 Hz or 60 Hz only.
5. Unique set of numbers for each air conditioner which identies the accessories on a model.

© 2019 nVent
88047465 - 5 -
DIMENSIONAL DRAWING
MOUNTING CUTOUT DIMENSIONS
NOTE: Dashed lines represent
air conditioner Mounting Gasket kit, 62-1000-50 included. Apply gasket to back of air conditioner before
mounting to enclosure.
CUTOUT INSTRUCTIONS
(As viewed from outside of enclosure)

© 2019 nVent 88047465
- 6 -
TECHNICAL INFORMATION
SEQUENCE OF OPERATION
The air conditioner comes standard with two internally mounted thermostats. There are two modes of
operation; heating and cooling. During heating and cooling modes the evaporator fan will be running.
HEATING
When the enclosure temperature is below the heating thermostat setpoint, power is applied to the
heaters. When the enclosure temperature is 10 degrees above the setpoint the heater is powered off.
COOLING
When the enclosure temperature is above the cooling thermostat setpoint, power is applied through the
dual pressure control, then to the time delay relay. After the delay time the contactor is energized and the
compressor starts. The condenser fan will start once the condenser discharge air temperature gets above
70 F. Component specic information is listed below.
Operating the air conditioner below the minimum ambient temperature or above the maximum ambient
temperatures indicated on the nameplate voids all warranties.
The moisture that the enclosure air can contain is limited. If moisture ows from the drain tube
continuously this can only mean that ambient air is entering the enclosure. Be aware that frequent
opening of the enclosure’s door admits humid air that the air conditioner must then dehumidify.
STANDARD AND OPTIONAL COMPONENT OPERATION
THERMOSTAT
The T62 air conditioner uses a 10-1061-16 thermostat. The thermostat setpoint equals the temperature
that the air conditioner turns off. The thermostat has a 10 F differential from setpoint until it calls for
cooling or heating. An example of operation is shown below.
For cooling (75-100 F range):
Tstat setpoint = 75 F
Cooling turns on at 85
Cooling turns off at 75 F
For heating (55-65 F range):
Tstat setpoint = 55 F
Heating turns on at 55 F
Heating turns off at 65 F
Note: For testing purposes only, the thermostat stop screw may be removed (on units so
equipped) to allow settings below 70 F. After testing, replace the stop screw and verify that
the thermostat can not be set below 70 F. Extended operation below 70 F can cause coil freeze
ups resulting in reduced load and/or unit damage.
DUAL PRESSURE CONTROL
LP cutout 30 psi, HP cutout 520 psi
The dual pressure control will prevent the compressor from operating when the system experiences low
pressure (i.e. loss of charge) or high pressure (i.e. a blocked condenser coil). The low pressure cutout
is an automatic reset and the high pressure cutout is a manual reset. An optional alarm relay will be
activated if this event occurs.
TIME DELAY RELAY
• Factory set for 3 minutes (top dial at 1-10 minutes, bottom dial at 3).
• The purpose of the time delay relay is to prevent short cycling of the compressor.
HEAD PRESSURE CONTROL
• Unit is set at the factory, no adjustment necessary.
• At condenser discharge temperatures below 70 F, the condenser fan is not powered and the LED’s are not lit.
• At temperatures between 70-100 F the yellow LED is lit and the fan is being regulated under full speed.
• At temperatures above 100 F the green LED is lit and the fan is operating at full speed.

© 2019 nVent
88047465 - 7 -
CONTACTOR
The contactor on this model uses a 230V coil.
TRANSFORMER
The transformer is 24V and is used to power the fan speed control and time delay circuit.
REFRIGERANT PROPERTIES CHART (R407C)
°F °C Bubble Pt Dew Point °F °C Bubble Pt Dew Point
-40 -40 2.9 4.5 60 15.6 117.7 96.8
-35 -37.2 5.2 0.7 65 18.3 128.7 106.7
-30 -34.4 7.9 1.7 70 21.1 140.2 117.2
-25 -31.7 10.7 475 23.9 152.5 128.4
-20 -28.9 13.9 6.5 80 26.7 165.5 140.4
-15 -26.1 17.3 9.3 85 29.4 179.2 153.1
-10 -23.3 21.1 12.4 90 32.2 193.6 166.5
-5 -20.6 25.2 15.8 95 35 208.8 180.8
0-17.8 29.6 19.5 100 37.8 224.9 195.8
5-15 34.4 23.6 105 40.6 241.8 211.8
10 -12.2 39.6 28 110 43.3 259.6 228.7
15 -9.4 45.2 32.7 115 46.1 278.2 246.5
20 -6.7 51.3 37.9 120 48.9 297.8 265.3
25 -3.9 57.8 43.6 125 51.7 318.3 285.2
30 -1.1 64.7 49.6 130 54.4 339.9 306.1
35 1.7 72.2 56.2 135 57.2 362.4 328.2
40 4.4 80.2 63.2 140 60 386 351.4
45 7.2 88.7 70.7 145 62.8 410.7 375.9
50 10 97.8 78.8 150 65.6 436.5 401.7
55 12.8 107.5 87.5

© 2019 nVent 88047465
- 8 -
UNIT CHARACTERISTICS
Model T62-2226-GXXX
Dimensional Data
Height 61.8 in / 1570 mm
Width 17.4 in / 442 mm
Depth 19.9 in / 505 mm
Unit Weight 218 lbs / 99 kg
Unit Protection Rating Type 12, 4
Cooling Data
Refrigerant R-407c
Refrigerant Charge 42 oz / 1306 g
Cooling Capacity at 95 F enclosure 95 F ambient (Btu/hr / W) 18,550 / 5,432
Cooling Capacity at Max Conditions (Btu/hr / W) 23,930 / 7,007
Maximum Ambient Temp 131 F / 55 C
Minimum Ambient Temp -40 F / -40 C
Enclosure Airow 673 cfm
External Airow 1,797 cfm
Condensate Management Hose discharge
Heating Data
Capacity 2,000 W
Electrical Data
Rated Voltage (50/60 Hz) 200 V / 230 V
Rated Frequency 50 / 60 Hz
Voltage Range +/-10% of rated
Cooling Amps at Max Conditions (50/60 Hz) 19.0 / 22.0 A
Heating Amps 8.7 A
Compressor RLA / LRA 10.8 / 56 A
Evaporator Fan RLA 1.3 A
Condenser Fan RLA 1.7 A
-XXX will be replaced with a three-digit number designating all desired options. Consult the factory for specic model numbers.
FUNCTIONAL DATA
Evaporator Air In
(°F) Unit Amps Evaporator Pressure (psi) Condenser Pressure (psi) Evaporator Delta (°F) Condenser Delta (°F)
65-80 10-12 45-75 175-225 15-25 18-28
80-100 11.5-15 60-100 210-320 15-25 18-28

© 2019 nVent
88047465 - 9 -
WIRE DIAGRAM
(5>
«)40
(21
-84?+2
9*6
<
<
%10&4
(#0
'8#2
$.19'4
$.-
6;8
(84
/(&
%#2
470
(84=.:
(84
470
%#2
«/(&
=.:
(21
,/+2*°=/8/4-
2/4+°<52:'-+
:+83/4'2
(25)1
/(&
(21
?+2
%#2
470
%10641..'4
52''&

<') 685(+
9
/1614«.+0'«.+0'«
/1614«
«14
«8#%
(21
(21
0;4):/54
2 2 -4*
)5368+9958
)536°.:8
4
%5
-84?+2
.+':+8°
2/3/:°9=:°56:
3'4;'2°8+9+:
2/3/:°9=:°56:
(219/2
(219/2
(219/2
';:58+9+:
°

(219/2
%106#%614
:.+8359:':
.+':/4- :.+8359:':
8+*
)552/4-
8+*
(84
(84=.:
?+2
=.:
8+*
(21
=.:
(21
=.:
(2;
(219/2
=.:
=.:
(21
(21
=.:
=.:
?+2°9
=.:
=.:
?+2
=.:
=.:
=.:
(21
(21
(21
(21
=.:
(21
=.:
8+*
(21 8+*
9;668+9958
56:/54'2
=.:
269
?+2
=.:
: :
: :
: :
:/3+8
(?6'99
  
9:'8:
8'4*53
:/3+8
?+2
?+2?+2
?+2
?+2
=.:
8+2'? .+':/4-
(21
56#46
%#2
=.:
(21
8+2'?

(21

9:'8:

?+2
?+2°)
?+2°8
8+*
=.:
(21
=.:
=.:
?+2
3'2,
$.7 ;'.
4'&
9=/:).



56:
=.:
=.:
56:
56:
(84
6;8
§21.'





  

  

© 2019 nVent 88047465
- 10 -
SERVICE DATA
COMPONENT LIST
Part Description Part Number
Blower Motor, Condenser 10-1020-14
Blower Motor, Evaporator 10-1020-15
Capacitor, Condenser Blower 52-6084-05
Capacitor, Evaporator Blower 52-6084-00
Capacitor, Compressor, Run 52-6032-06
Capacitor, Compressor Start 10-1032-08
Time Delay Relay 10-1005-71
Coil, Condenser 62-1001-00
Coil, Evaporator 62-1001-03
Compressor 89073502
Contactor, Compressor 89088986
Controller, Head Pressure 10-1106-108
Evaporator Outlet Filter (Optional) 10-1000-01
Filter/Dryer 52-6028-09
Grille, Condenser fan 13-1014-03
Switch, Dual Pressure 52-6104-59
Thermal Expansion Valve 10-1040-46
Transformer 10-1006-143
Thermostat 10-1061-16

© 2019 nVent
88047465 - 11 -
MAINTENANCE
COMPRESSOR
The compressor requires no maintenance. It is hermetically sealed, properly lubricated at the factory and
should provide years of satisfactory operating service.
CONDENSER AND EVAPORATOR BLOWER MOTORS
Blower motors require no maintenance. All bearings, shafts, etc. are lubricated during manufacturing for
the life of the motor.
Operation of the air conditioner in areas containing airborne
caustics or chemicals can rapidly deteriorate condenser coils,
blowers and motors, etc. Contact nVent Equipment Protection for
special recommendations.
CAUTION
REFRIGERANT LOSS
Each air conditioner is thoroughly tested prior to leaving the factory to insure against refrigeration leaks.
Shipping damage or microscopic leaks not found with sensitive electronic refrigerant leak detection
equipment during manufacture may require repair or recharging of the system. This work should only be
performed by qualied professionals, generally available through a local, reputable air conditioning repair
or service company.
Should the refrigerant charge be lost, recharging ports (access ttings) on the suction and discharge
sides of the compressor are provided for recharging and/or checking suction and discharge pressures.
Under no circumstances should the access tting covers be loosened, removed or tampered with.
Breaking of seals on compressor access ttings during warranty period will void warranty on hermetic
system. Recharging ports are provided for the ease and convenience of reputable refrigeration repair
service personnel for recharging the air conditioner.
Refer to the data on the nameplate that species the type of refrigerant and the charge size in ounces.
NOTE: Before recharging, make sure there are no leaks and that the system has been properly
evacuated into a deep vacuum. Technician must weigh in charge according to the nameplate
specifications.

© 2019 nVent 88047465
- 12 -
TROUBLE SHOOTING
BASIC AIR CONDITIONING TROUBLE SHOOTING CHECK LIST
1. Check manufacturer’s nameplate located on the unit for correct power supply.
2. Turn on power to the unit. The evaporator (Enclosure or “COLD” air) fan should come on. Is there
airow?
YES, proceed to step 3.
NO, possible problem:
• Open motor winding
• Stuck fan motor
• Obstructed wheel/blades
Repair or Replace
defective part
3. Check thermostat setting and adjust thermostat to the lowest setting. This should turn the
condenser fan and the compressor on. Did condenser fan and compressor come on when the
thermostat was turned on?
YES, proceed to step 4.
NO, possible problem:
• Defective thermostat Replace Part
4. Are both fans and the compressor running? If not the unit will not cool properly.
5. Check condenser (Ambient or “HOT” air) fan for airow. Is there airow?
YES, proceed to step 6.
NO, possible problem:
• Defective thermostat
• Open motor winding
• Stuck impeller motor
• Obstructed wheel/blades
Repair or Replace
defective part
6. Carefully check the compressor for operation - motor should cause slight vibration, and the outer
case of the compressor should be warm. Is the compressor showing signs of this?
YES, wait 5 minutes, then proceed to step 7.
NO, possible problem:
• Defective thermostat
• Defective capacitor
• Defective overload
• Defective relay
Repair or Replace
defective part
7. Make sure the coils are clean. Then check evaporator “air in” and “air out” temperatures. If the
temperatures are the same:
• Possible loss of refrigerant
• Possible bad valves in the
compressor
Repair or Replace
defective part
8. To check for a bad thermostat, turn power to the unit off. Remove the control box cover and place
both thermostat wires onto one terminal (replace control box cover for safety). This will activate
the switch in the thermostat. Turn the power on and if both fans and the compressor come on, the
thermostat needs to be replaced.

© 2019 nVent
88047465 - 13 -
SYMPTOMS AND POSSIBLE CAUSES:
SYMPTOM POSSIBLE CAUSE
Unit won’t cool
Clogged ns on coil(s)
Dirty lter
Impellers/fans not running
Compressor not running
Compressor runs, but has bad valves
Loss of refrigerant
Compressor tries to start but won’t run
Low line voltage at start. Should be +/-10% rated voltage.
Compressor motor stuck
Bad contactor
Bad overload switch
Bad run/start capacitor
Unit blows breakers Undersized breaker/fuse or not time delayed
Short in system
Getting water in enclosure
Drain plugged
Drain tube kinked
Enclosure not sealed (allowing humidity in)
Mounting gasket damaged
For additional technical information (i.e., amp draw, pressures, temperatures) , contact nVent
Equipment Protection at 800-896-2665.
F-GAS INFORMATION
T622226GXXX
T622246GXXX
Refrigerant
Kühlmittel
Chłodziwo R407C
GWP 1774
Factory Charge
Füllmenge durch Hersteller
Opłata Fabryczna
1300 Grams
1300 Gramm
1300 Gramów
CO2Equivalent
CO2Equivalent
CO2Ekwilalent
2.31 Tons
2,31 Tonnen
2,31 Tony

© 2019 nVent 88047465
- 14 -
NOTES

© 2019 nVent
88047465 - 15 -
NOTES

© 2019 nVent 88047465
Rev. H P/N 10-1008-239
P8GPV
*QHHOCP9
C[
#
PQMC/075#




P8
GPVEQO