nVent Hoffman T Series User manual

T15 Instruction Manual

© 2019 nVent 89059119
Rev. I P/N 10-1008-194
T-SERIES
Air Conditioner
t15 Model
INSTRUCTION MANUAL

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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 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
Dimensional Drawing .....................................................................................................................................................................................4
Mounting Cutout Dimensions ........................................................................................................................................................................5
Components List ............................................................................................................................................................................................5
Wire Diagrams .................................................................................................................................................................................................6
Without Heat ...........................................................................................................................................................................................6
With Heat .................................................................................................................................................................................................7
Schematics .....................................................................................................................................................................................................8
TEMPERATURE CONTROL ..............................................................................................................................................................9
Units With heat ................................................................................................................................................................................................9
PRINCIPLES OF OPERATION ..........................................................................................................................................................9
MAINTENANCE ..............................................................................................................................................................................10
Compressor...................................................................................................................................................................................................10
Inlet Air Filter .................................................................................................................................................................................................10
How To Remove, Clean or Install a New Inlet Air Filter .............................................................................................................................10
Condenser and Evaporator Air Movers .......................................................................................................................................................11
Refrigerant Loss............................................................................................................................................................................................11
TROUBLE SHOOTING ....................................................................................................................................................................12
Basic Air Conditioning Trouble Shooting Check List .................................................................................................................................12
Symptoms and Possible Causes: ...............................................................................................................................................................13
F-GAS INFORMATION ....................................................................................................................................................................13
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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 file 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 five (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 filled
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.
Operate the air conditioner for five (5) to ten (10) minutes. No excessive noise or vibration should be evident
during this run period. The condenser blower (ambient air), the evaporator blower (enclosure air), and the
compressor should be running.
Condenser air temperatures should be warmer than normal room temperatures within a few minutes.
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 filter 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.
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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 cutout dimensions shown page 5 in this manual, prepare the air “IN” and air “OUT”
openings, and mounting bolt hole pattern for the enclosure.
3. Using the gasket kit provided, install gaskets to air conditioner.
4. Mount air conditioner on enclosure using mounting bolts and screws provided. “EZ” mount tabs
can be used to hold unit on enclosure while mounting in place. Allow unit to remain upright for a
minimum of five (5) minutes before starting. Caution! Air conditioner must be in upright position
during operation.
5. To avoid cross-threading mounting inserts, start bolts by hand before tightening with a wrench or
ratchet driver.
6. When routing the drain tube, caution should be taken to keep it from kinking or being elevated
above the exit point of the air conditioner. The drain tube must be on a continuous downward
slope. A slight elevation of the tube could result in secondary trap. FAILURE TO FOLLOW THESE
INSTRUCTIONS COULD RESULT IN OVERFLOWING OF THE CONDENSATE DRAIN PAN.
7. Refer to top of nameplate for electrical requirements. Connect the power cord to a properly
grounded power supply. Use of an extension cord is not recommended. Electrical circuit should be
fused with slow blow or HACR circuit breaker.
DESIGN DATA
Model Voltage Hz Full Load
Amps Phase BTU/Hr. @
Max Ambient
Temperature
Max Ambient
Temperature
(°F/°C)
Shipping
Weight
(lb./kg)
T150116GXXX 115 60 3.6 1 800 131/55 27/12.3
T150116GXXX 100 50 3.8 1 800 125/52 27/12.3
T150126GXXX 230 60 1.5 1 900 131/55 27/12.3
T150126GXXX 220 50 1.4 1 800 125/52 27/12.3
-XXX will be replaced with a three-digit number designating all desired options. Consult the factory for specific model numbers.
DIMENSIONAL DRAWING
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MOUNTING CUTOUT DIMENSIONS
Externally Mounted Internally Mounted
Cutout Instructions
(As viewed from outside of enclosure)
NOTE: Phantom lines represent air conditioner.
COMPONENTS LIST
Part Description Part Number
115V 230V
Fan, Condenser 12-1012-01 12-1012-02
Fan, Evaporator 13-1015-01 13-1015-02
Capacitor, Compressor 52-6032-09 52-6032-10
Coil, Condenser 15-1001-02 15-1001-02
Coil, Condenser, Coated 15-1001-01 15-1001-01
Coil, Evaporator 15-1001-03 15-1001-03
Compressor 10-1016-82 10-1026-101
Filter, Air, Reusable 89057626 89057626
Filter/Dryer 52-6028-03 52-6028-03
Freeze stat 10-1033-26 10-1033-26
Service Cord 52-6035-140 52-6035-141
Terminal Block 10-1003-03 10-1003-03
Thermal Overload, Compressor 10-1007-67 10-1007-68
Thermostat, SPST, 55-100F 10-1061-16 10-1061-16
Optional Heater 10-2004-23 10-2004-24
Optional Malf Switch 52-6104-42 52-6104-42
87981867
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WIRE DIAGRAMS
WITHOUT HEAT
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WITH HEAT
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SCHEMATICS
With Heat Without Heat
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TEMPERATURE CONTROL
The electromechanical thermostat is factory preset to 75 F/23 C. To change the temperature setting, remove
the nylon plug from the front face of the unit. Use a standard screwdriver to adjust thermostat. For cooler
temperatures turn clockwise, for warmer temperatures turn counterclockwise. Setpoint differential is 6 F.
UNITS WITH HEAT
With a dial setting of 75 F, heat will turn on @ 70 F and turn off @ 75 F. Cooling will turn on @ 85 F and turn off
at80 F.
There is a 10 F difference between the heater off setpoint and cooling on setpoint to prevent both from operating
at the same time.
The dial range of the thermostat is 50-95 F.
PRINCIPLES OF OPERATION
If electrical power to the air conditioner is interrupted and reapplied immediately, (within 3 to 5 seconds),
thecompressor may not restart due to the high back pressure of the compressor. It takes a minimum of one
(1)minute after shut-down for the compressor suction and discharge pressures to equalize in order for the air
conditioner to restart.
Operating the air conditioner below the minimum ambient temperature or above the maximum ambient
temperatures indicated on the nameplate voids all warranties.
It is recommended that the warranty section of this manual be read in order to familiarize yourself with
parameters of restricted operation.
The moisture that the enclosure air can contain is limited. If moisture flows 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, which the air conditioner must then dehumidify.
Units with the optional malfunction switch have a normally open connection between the red & yellow wires and
normally closed with the red and blue wires. During alarm the red and yellow wires will be closed and the blue and
red wires will be open.
Maximum electrical ratings for the switch are 13A for 120 VAC and 10A for 240 VAC.
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