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Ceiling Split Cooling System
Installation, Operation & Care Manual
CT14TSD CT13TSD
CT12TSD CT34TSD
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Important Safety Information
WARNING:
• Do not use a ground fault interrupter (GFI).
• A dedicated 20 AMP circuit for CT14~13TSD and 30 AMP for CT34TSD
are required.
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Table of Contents
Cellar Construction.…………………………….……………..3
Features & Specifications…………………….….…………..4
Temperature & Humidity……….…………..………..……….6
Care Guide………………………………………………….…11
User’ Troubleshooting…….………………………………...12
Installer’s Instructions………….…..….……..…………….16
Electrical Wirings..…………….…..….……..………………28
Customer Support……………………………………………32
Warranty……………………………………………………….33
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Cellar Construction
This is only a guide and shall be considered as minimum requirements.
All interior walls and floors shall have a vapor barrier and a minimum of R13
insulation. All exterior walls and ceiling shall have a vapor barrier and a minimum
of R19 insulation. The vapor barrier shall be installed on the warm side of the
insulation. All joints, door frames, electrical outlets or switches and any pipes or
vents that go through the cellar shall be sealed to prevent air and moisture
leakage into the cellar. Concrete, rock, and brick are not insulation or vapor
barriers.
Doors shall be of a minimum size, insulated to at least R13 and tightly sealed
with high quality weather stripping. Be sure to seal the bottom of the door and fill
gap between the door’s frame and wall before installing the cap molding.
In order to maintain 55 °F in the wine cellar, the ambient temperature
surrounding the enclosure shall not exceed the temperature of the cellar by more
than 25 °F. No cellar wall shall receive direct sun or strong wind.
Lighting shall be of low wattage, with a timer to insure lights are not left on when
the cellar is not occupied.
The cooling system will not be able to maintain the proper temperature if fresh
moisture-laden air is constantly being introduced to the cellar. Symptoms of this
condition are; cooling unit runs all the time with only a slight reduction in
temperature and/or water overflows from the unit. Because of the temperature
difference between the inside and outside, very small cracks can allow large
amounts of outside air to enter into the cellar. Please be aware that moisture can
pass through solid concrete, paint and wood. Often a newly constructed cellar
contains fresh wood, paint, concrete and other building materials. These
materials contain large amounts of moisture. When placed into operation in this
type of environment, the system will work harder to remove this extra moisture
resulting in increased “run” time.
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Features and Specifications
• CELLARTEC ceiling mount split cooling systems CT14~34TSD are designed
and used to provide a cold temperature between 50~65 °F for a properly
insulated wine cellar.
• The wine cellar will maintain humidity range within 50~70% RH.
• These temperature and humidity ranges like in natural caves are optimized
for long term storage of wine.
• TSD units consist of a condensing unit and an evaporator unit; they are
connected by a liquid line and an insulated suction line.
• TSD condensing units can be located away from the wine cellars 50 ft so that
noise and compressor vibration are isolated.
• TSD evaporator units provide two way air supply operation. The evaporator
units can be installed on the ceiling in the center of a wine cellar.
Fig. 1 TSD Ceiling Split Cooling System
NOTE:
Capacity is determined under the cellar, the cellar ambient and the
condensing unit ambient temperatures of 55°F, 75°F and 90°F, with R13
interior and R19 exterior insulations. Any higher ambient temperatures,
lower insulations will cause reducing capacity and the cellar temperature
may not be maintained at 55°F.
CAUTION:
If the installation area will be below 50°F, purchase a low ambient condition
kit.
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NOTE:
To prepare rough-in, leave minimum 4” clearances for electrical wiring and
refrigeration piping.
The specifications and dimensions are listed as follows:
Electrical
Evap Unit/
Cond Unit
115V-60HZ-1A
115V-60HZ-5.7A
115V-60HZ-1A
115V-60HZ-6.9A
115V-60HZ-1.5A
115V-60HZ-12A
115V-60HZ-1.5A
115V-60HZ-15A
Model No
CT14TSD
CT13TSD
CT12TSD
CT34TSD
Evap Unit
WE”xDE”xHE”
WM-25SFCD
23x17.5x7.5
WM-45SFCD
23x17.5x10.5
WM-65SFCD
29.875x21x11.75
WM-85SFCD
29.875x21x13.5
Cond Unit
L”xD”xH”
WM-250SCU
18x14 x12
WM-450SCU
18x14 x12
WM-650SCU
24x18 x18
WM-850SCU
24x18 x18
Btu/h
CFM
2500
350
4500
460
6500
660
8500
810
Cellar Size
(cu ft)
250 R134a
1000 R134a
1500 R134a
2000 R134a
Refrigerant
Also see Fig. 5, 6, 7 & 8 for further info.
Weight (lb)
Evap Unit/
Cond Unit
20/40
25/60
35/90
40/115
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Temperature and Humidity
1. Temperature Setting
• Set the temperature at 55
• On initial start-up, the time required to reach the desired temperature
will vary, depending on the quantity of bottles, temperature setting and
the surrounding temperature.
• Allow 24 hours to stabilize the temperature for each new temperature
setting operation.
°F for the optimum aging of wine
Fig. 2 Touchscreen Programmable Thermostat
NOTES:
If the screen locked, it must be unlocked before the following operation can be
performed. Enter the system setup and set 670 = 0 to unlock screen or 670 = 2
to lock screen, then exit.
2. How to Set Temperature
Press “Set To” UP/DOWN keys to change temperature set-point.
3. How to Set Clock
Press CLOCK key; press UP/DOWN keys to change clock and press DONE key
to exit.
4. How to Set Remote Air Sensor
Enter the system setup and unlock screen, set 340 = 3, lock screen and then
exit.
5. How to Display Humidity
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It only displays the humidity where the thermostat is installed. The humidity level
is shown in the lower right corner of the screen.
6. How to Start System
If the thermostat does not start automatically, press and release the SYSTEM
key, press COOL key and it flashes, then press DONE key to start.
Fig. 3 System Starting
7. How to Stop System
Press and release the SYSTEM key, then press OFF key and it flashes, then
press DONE key to stop.
8. How to Setup System
NOTE:
The default factory settings have been set up already at factory.
1). Press and release the SYSTEM Key
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2). Press and hold the two blank keys on either side of the center blank key for
approximately five seconds until screen matches the screen below.
3). Press UP/DOWN advance keys to scroll setup number; press UP/DOWN
change keys to modify settings.
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Factory Setup Menu
Setup Number Setup Name Settings
0120 Date (Year Upper) Select first two digits of current calendar year
0130 Date (Year Lower) Select last two digits of current calendar year
0140 Date (Month) Select number for current calendar month
0150 Date (Day) Select number for current calendar date
0160 Schedule Options 0-nonprogrammable
0170 System Selection 6-cool only (default); 1-heat and cool
0180 Fan Control in Heating 0-by heating equipment
0220 Cycles Per Hour 2
0280 Continuous Backlight 0-not (default); 1-yes
0300
0320 Temperature Display 0-fahrenheit (default); 1-celsius
0330 Daylight Savings 0-off (default); 1-on
0340 Remote Air Sensor 0-no (default); 3-indoor
0380 Indoor Dehumidification 0-no
0580 Min Compressor Off 5-five minutes off
0610 Min Cool Temp
0640 Clock Format 12-12 hour (default); 24-24 hour
0660 Extended Cool Fan On 0-0 seconds (default); 90-90 seconds
0670 Keypad Lockout 1-partially locked (default); 0-unloc ked
0690 Cool Temp Control 2-standard
0700 Temperature Offset 0-no
0710 Reset 0-No Reset (default); 1-Reset
Cooling & Heating
Changeover
0-manual
°F
50
NOTES:
• The setup 0660 = 90 can be used to increase the humidity in the wine cellar.
• The setup 0660 = 90 can also be used for defrosting more efficiently if there is
excessive frost.
4) Press the DONE key to exit the Installer Setup screen.
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9. How to Test System
1). Enter the system setup, and press DOWN ARROW advance key to select
setup number until “TEST” appears.
2). Press UP/DOWN advance keys to select the system test number, and then
press UP/DOWN change keys to test on or off functions.
Fig. 4 System Test
Test Number Test Type System Status
1 cooling 1-on; 0-off
2 fan 1-on; 0-off
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Care Guide
In general, always unplug system or disconnect power while doing care.
1. Coil Cleaning
• Clean the condenser coil regularly. Coil may need to be cleaned at least
every 6 months.
• Use a vacuum cleaner with an extended attachment to clean the coil when it
is dusty or dirty.
2. Condensate Removing
• Remove the excessive condensate if it is accumulated in the wine cellar at
high humidity conditions.
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User’s Troubleshooting
This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Complaint Possible Causes Response
1. Unit not
running
2. Unit not
starting , but
temperature
rising high
3. Temperature
fluctuating
4. Temperature
high, unit
stopping
and starting
normally
5. Temperature
high, unit
stopping
and starting
with short
running time
6. Temperature
a. Power cord not plugged
b. No power from supply
c. Incorrect or loose wirings
d. Low voltage
e. Setting higher than ambient
temperature
f. Waiting for cut-in
g. Defrost light blinking
h. Compressor light blinking
i. Defective controller
a. Anti-short cycle
a. Air probe
a. Temperature setting high
a. Air probe touching the
evaporator coil, displaying
temperature ok
b. Air probe in cold-air supply,
displaying temperature ok
c. Failed controller and probe
a. Improper cellar insulation & seal a. Check insulation, gasket and door
a. Check po wer cord
b. Check rece ptacle and fuses
c. Check all wirings and connections
d. Contact an authorized electrician
e. Lower temperature setting
f. Wait
g. Unit is under defrost mode
h. Unit is under anti-short cycle delay
i. Call service for diagnosis
a. Reset AC
a. When using an air probe, the wine
bottle temperature is mainly
controlled by the average air
temperature. If the set-point is 55
with the differential 4F, the cooling
unit turns on at 59
temperature (It may be higher than
59
°F if it is in anti-short cycle or
defrost cycle) and turns off at 55
of air temperature. The average air
temperature is 57
wine temperature is around 57+/-
0.5
°F. The air is light enough to
change so quickly that it maintains
relatively constant average
temperature that would prevent wine
bottle temperature from fluctuating.
a. Lower the setting
a. Move the air probe away from the
evaporator
b. Move the air probe away from the
cold-air supply
c. Call service for diagnosis
opening
°F of air
°F, and then the
°F
°F
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high or not
cooling and
running
continually
7. Unit running
too long
8. Condenser
fan running
but
compressor
not running
9. Compressor
running but
condenser
fan not
running
10.Temperature
high,
compressor
stopping
and starting
but very
short
running time
11.Evaporator
fan running
too long
12. Evaporator
b. Cellar too large
c. Ambient temperature too high
d. Exhaust restricted
e. Malfunctioning fans
f. Evaporator or condenser airflow
g. Dirty Condenser
h. Iced evaporator
i. Refrigeration system restriction
j. Refrigerant leak
k. Undercharge or overcharge
l. Failed components
a. Improper cellar insulation & seal
b. Exhaust restricted
c. Cellar too large
d. Ambient temperature > 90
e. Dirty Condenser
f. Improper condenser air flow
a. Incorrect or loose wirings
b. Failed components
c. Liquid refrigerant in the
compressor
a. Fan blade stuck
b. Incorrect or loose wirings
c. Failed motors
d. Fan cycle control
a. Failed components
b. Improper condenser airflow
c. Dirty condenser
d. Overcharge of refrigerant
e. Discharge or suction pressure
too high
a. Post-compressor fan running
mode for humidity modulation
a. Incorrect or loose wirings a. Check all wirings and connections
°F
b. Check f or excessive size
c. Check installation location
d. Leave minimum 3 feet clearance for
the hot air exhaust side and leave
minimum 1 foot clearance for the
ambient air intake side
e. Check for both evaporator and
condenser fans
f. Check for air restrictions, air short-
circulation, grille directions
g. Clean condenser
h. Defrost and reset temperat ure
i. Call service
j. Call service
k. Call service
l. Check compressor windings, start
relay and overload protector
a. Check insulation, gasket and door
opening
b. Leave minimum 3 feet clearance for
the hot air exhaust side and leave
minimum 1 foot clearance for the
ambient air intake side
c. Check for excessive size
d. Check for installation location
e. Clean condenser
f. Check for fan and air short
circulation
a. Check all wirings and connections
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call service.
a. Check for proper clearance
b. Check all wirings
c. Call service
d. Check for setting
a. Check compressor windings, start
relay and overload protector.
b. Check for condenser fan
c. Clean condenser
d. Call service for removing refrigerant
e. Call service for information
a. Reset FON
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fan running
but
condensing
unit not
running
13.Temperature
low
14.Evaporator
freezing up
15.Water leak
16.Excessive
condensate
in wine
cellar
17.Condensate
inside ducts
18.Condensate
outside
ducts
19.Circuit
tripping
20.Noisy
operation
b. Failed components
c. Low refrigerant
a. Low temperature setting
b. Low ambient temperature
c. Air probe fault
d. Temperature controller fault
a. Evaporator air flow restriction
b. Condenser air flow restriction
c. Not stopping due to air leak, high
ambient temperature or low
temperature setting
d. Defective controller or probe
e. Low ambient temperature
f. Initially working then stopping,
moisture in the system
g. Refrigerant low or leaking
h. Expansion valve blockage
a. Air leak in the wine cellar causing
excessive condensate
b. High humidity causing excessive
condensate
c. Evaporator air flow restriction
d. Drain restricted or unit not level,
and water overflowing
e. Drip tray leak (No overflow but
leak)
a. Air leak in the wine cellar causing
excessive condensate
b. High humidity causing excessive
condensate
c. Drain restricted
a. Drain line restricted
b. Continually running not sto pping
c. Too cold supply air
a. Duct not insulated
b. High humidity
c. Too cold supply air
a. Incorrect fuse or breaker
b. Incorrect wirings
c. Failed components
a. Mounting area not firm
b. Loose parts
c. Compressor overloaded due to
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call service
a. Raise the setting
b. Move to another location
c. Check probe connections or change
a new one
d. Change a new one
a. Check for fans and CFM
b. Check for fans and CFM
c. Check for seal, door opening,
ambient temperature and
temperature setting
d. Check for controller and probe
e. Change defrost cycle
f. Call service
g. Call service
h. Call service
a. Check for air leak
b. Use drain line
c. Check supply air flow or air TD
d. Clean the drip tray and drain line
e. Seal the leak using silicone sealant
a. Check for any air leak
b. Use drain line
c. Clean the drip tray and drain line
a. Check for drain
b. raise temperature setting or
increase defrost cycle
c. Increase air flow or raise
temperature setting
a. Check for insulation
b. Use dehumidifier
c. Increase air flow or raise
temperature setting
a. Check for proper fu se or breaker
b. Check for wirings and connections
c. Call service
a. Add support to improve installation
b. Check fan blades, bearings,
washers, tubing contact and loose
screws.
c. Check for airflow
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high ambient temperatures or
airflow restriction
d. Defective components
d. Call service for checking internal
loose, inadequate lubrication and
incorrect wirings
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Installer’s Instructions
Federal law requires that CELLARTEC split cooling systems be
installed by an EPA certified refrigeration technician.
1. General Instructions
CELLARTEC split system is shipped as components and is ready for use only
after a certified refrigeration technician has properly installed the system. Proper
installation is critical. Apex can only warrant the quality of the components. The
installation and proper operation of the system must be warranted by the
installer. Installation of the system must be done in accordance with all state and
local building and electrical codes.
The condensing unit and evaporator unit are connected by a liquid line and an
insulated suction line that are supplied by the installer. These lines must be
properly sized for the distance between the two units. After the units and lines
are connected, the system must be checked for restriction, pressurization and
leak. Then the system must be evacuate and charged with refrigerant.
Refrigerant amount will vary depending on the length of line set.
Parts included:
Evaporator Unit (liquid line solenoid valve and expansion valve installed)
Condensing Unit (discharge and suction valves installed)
Liquid Filter
Liquid Indicator
Touch-Screen Thermostat (6”L X 4 9/16”W X 1 3/8”D)
Parts not included:
Liquid line copper tubing
Suction line copper tubing
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CAUTION:
Liquid and suction line locations may differ from what are shown here,
please check on the units for proper installation.
Fig. 5 WM-25~45SFCD Evaporator Unit
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Fig. 6 WM-65~85SFCD Evaporator Unit
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Fig. 7 WM-250~450SCU Condensing Unit
Fig. 8 WM-650~850SCU Condensing Unit
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Fig. 9 Liquid Filter Fig. 10 Liquid Indicator
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Fig. 11 Touch-Screen Thermostat
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2. Thermostat and Air Probe Installation
1) The thermostat with a built-in air probe can be installed in the wine room 5 ft
above the floor in an area with good air circulation.
2) If the thermostat is mounted outside the wine room, a remote air probe is
required inside the wine room. The air probe shall be located in the wine
cellar 5 ft above the floor or the air return area, but it shall not be located in
the air supply area or other areas where air is not circulated.
3. Evaporator Unit Installation
1) WM-25~85SFCD evaporator units shall be installed for ceiling mount with the
supply air toward horizontal and return air on the bottom.
2) Air supply shall be unobstructed minimum 12” for a direct blow installation;
leave 2” clearance for a deflector installation; air return shall be unobstructed
minimum 6”.
3) The units may be recessed into the ceiling with short curved rectangular ducts;
CFM must be checked.
4) There is a gravity drain system used, so the unit shall be installed level or with
a slight slope downward the drain connection and the drain line shall be
installed slope down toward the drain. If rise-up is needed, a condensation
pump must be used.
4. Condensing Unit Installation
CAUTION:
Low ambient condition kit is required if the installation area will be below
50°F. If the condensing unit is equipped with a low ambient condition kit,
do not turn on the compressor until the condensing unit has been powered
for minimum 12 hours.
1) Place the condensing units WM250~850SCU in a properly
ventilated location. If it is not, heat exhausted by the
condensing unit will build up and the cooling system will not
operate properly.
2) Condensing unit shall be elevated to avoid possible flooding
and shaded from direct sun. It shall not be exposed to
temperatures higher than 110 °F or lower than 50 °F.
3) Leave minimum 5 ft clearance for the exhaust side and leave minimum 1 foot
clearance for the ambient air intake side.
4) Service valve operations
1 - Process or Manometer
2 – Receiver Discharge or Compressor Suction
3 – Liquid Line or Suction Line
4 - Pressure Control
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Back Position: Normal operation after installation is complete, process or
manometer port is closed.
Front Position: Storage or shipping operation, liquid or suction line connection
is closed.
Middle Position: Installation operation, all ports are open for evacuation, charge
and manometer.
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 12 ROTALOCK Valve Operation
BACK POSITION FRONT POSITION MIDDLE POSITION
Fig. 13 Base Valve Operation
5. Checking Pressure Control Settings
1) Use of the encapsulated pressure control (if applicable)
Fixed suction pressure setting: Cut in = 32 psig; Cut out = 10 psig
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Fig. 14 Fixed Pressure Control
2) Use of the adjustable pressure control (if applicable for pump-down)
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig
It may need to adjust the setting in the field to get the right cycle time.
A. P70 Single/Dual Control
B. PS2 Dual Control
Fig. 15 Adjustable Pressure Control
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3) Low ambient condition kit (if applicable)
A. Use of the condenser fan control
Head pressure setting: Cut in=170 psig; Cut out=110 psig; Differential=60 psig
It closes on rise of pressure. It may need to adjust the setting in the field to avoid
fan short cycle.
Fig. 16 Condenser Fan Cycle Control
B. Use of the crankcase heater
The crankcase heater is installed around the lower part of the compressor and
shall be turned on all the time. The heater is self-regulated.
6. Refrigeration Piping and Leak Testing
NOTES:
• The line connection sizes of liquid filter & indicator, the valve
connection sizes of condensing unit and the line connection sizes of
evaporator unit are not necessary the same as the listed refrigeration
line sizes.
• If the condensing unit is installed above the evaporator unit, use the
suction line one listed size smaller.
• Expansion and solenoid valves have been installed on the liquid line in
the evaporator unit.
1) The installation order starts from condensing unit (including receiver and
discharge valve), liquid line filter-drier, moisture-liquid indicator, liquid line, to
evaporator unit (including liquid line connection, solenoid valve, expansion
valve, and suction line connection), returning to insulated suction line, suction
valve and then back to condensing unit.
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2) If the condensing unit is located below the evaporator unit, use inverted U
trap to prevent liquid from flooding back to the compressor; if the elevation
difference is more than 10 ft or the line set exceeds 75 ft, use both inverted U
trap and suction accumulator.
3) If the condensing unit is located more than 10 ft above the evaporator unit,
use U trap to aid oil returning to the compressor.
4) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and test leak.
5) Hook up the drain line and check if water drains.
The line sizes and refrigerant charges are listed as follows.
Model No
CT14TSD <= 75 FT 1/4” OD 3/8” OD 1/2” OD R134a/19 OZ
CT13TSD <= 75 FT 1/4” OD 1/2” OD 1/2” OD R134a/26 OZ
CT12TSD <= 75 FT 1/4” OD 1/2” OD 1/2” OD R134a/32 OZ
CT34TSD <= 75 FT 3/8” OD 5/8” OD 1/2” OD R134a/40 OZ
Equivalent Line
Set
Liquid
Line
Suction Line Drain Line
Recommended
Charge
7. Connecting Electrical Wires
Connect all 120VAC and 24VAC components using the wiring diagrams in
accordance with all state and local codes.
8. Evacuating, Charging and Starting the system
CAUTION:
• Always use the superheat and subcooling, pressure readings to charge
refrigerant properly; the listed charge amounts are used for reference
only.
• If the unit is equipped with a low ambient condition kit and installed in
the summer, charge 15% more refrigerant.
• If the low ambient condition kit is used, turn off the compressor before
power the condensing unit. Only turn on the compressor after the
condensing unit has been powered for 12 hours.
1) Evacuate the system; both discharge and suction valves must be in the
middle positions during evacuating.
2) Charge the system through both suction and discharge valves with refrigerant
using the recommended initial amount; both discharge and suction valves
must be in the middle positions during charging.
3) Turn on the power to start the system and check the following temperatures
and pressures.
9. Adjusting and Completing the Installation
1) The subcooling at the condensing unit shall be around 10°F. The charge may
be complete when there are no more bubbles forming in the liquid indicator.
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2) Head pressure range: 120 ~ 150 psig at 70 ~ 90 °F condensing unit ambient
temperature.
3) The evaporator’s constant pressure expansion valve is set around 30 ~ 35
psig (35 ~ 40°F) at factory. This pressure setting gives a dew point to
maintain the proper humidity for storing wine.
4) The temperature split across the evaporator shall be 8 ~ 10°F at 55°F wine
cellar temperature.
5) Again, you must verify if the superheat at the evaporator unit is around 9 ~
18°F at 55 °F ~ high wine cellar temperatures.
6) If the superheat is high, check the subcooling first to know if the refrigerant
charge is sufficient. If the charge is not sufficient, add more refrigerant. If the
charge is good, then increase the evaporator suction pressure by turning the
hex nut (5/16”) clockwise. Liquid must always be charged into the hide side
when the compressor runs.
7) If the superheat is low, then decrease the evaporator suction pressure by
turning the hex nut (5/16”) counter-clockwise.
8) Both discharge and suction valves must be in the back positions before
disconnecting.
9) Close all service valves and disconnect all manifolds and hoses.
Fig. 17 Expansion Valve
10. Pressure, Superheat and Subcooling Readings
CAUTION:
To read properly the service valves must be in the middle positions.
Complaint Possible Causes
1) High suction pressure and low head pressure
Zero superheat and zero subcooling
2) High suction pressure and low head pressure
Low superheat and low subcooling
3) High suction pressure and high head pressure
Low superheat and high subcooling
4) High to normal suction pressure and high head
pressure
Low subcooling
1) Compressor may be bad
2) Expansion valve opened, too
much oil
3) Overcharge
4) Non-condensable gas
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5) High suction pressure and high head pressure
Low superheat and low subcooling
6) High suction pressure and high head pressure
High superheat
7) Low suction pressure and low head pressure
High superheat and low subcooling
8) Low suction pressure and low to normal head
pressure
High superheat and high subcooling
9) Low suction pressure and low head pressure
Normal to high superheat and low subcooling
10) Low suction pressure and low head pressure
Low superheat and low subcooling
11) Low suction pressure and low to normal head
pressure
High superheat and normal to high subcooling
12) Low suction pressure and normal head pressure
High superheat and normal subcooling
13) Low suction pressure and high head pressure
High superheat and high subcooling
14) Low suction pressure and high head pressure
High superheat and high subcooling
15) low to normal suction pressure and high head
pressure
Normal to high superheat and high subcooling
11. Condensing Unit Troubleshooting
Unit not running
1) Incorrect power supply
2) Incorrect or loose wirings
3) Failed components
4) Low pressure switch shutting down the
system
5) high pressure switch shutting down the
system
5) Air restricted, dirty condenser,
bad condenser fans
6) High cellar temperature, high
evaporator load
7) Undercharge
8) Liquid line restricted after
receiver, solenoid valve restricted
9) Suction line restricted
10) Air restricted at evaporator,
evaporator iced
11) Evaporator restricted
12) Expansion valve restricted
13) Both evaporator and condenser
restricted; liquid and suction lines
connected wrong
14) Liquid line restricted before
receiver
15) Condenser restricted
1) Check for proper voltage
2) Check all wirings and connections
3) Check start relay, start capacitor,
overload protector, compressor.
4) Check for system restriction or low
refrigerant
5) Check for the condenser fan
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Page 29
Electrical Wiring Diagrams
CAUTION:
• Hidden lines are the field wirings.
• Use minimum 14 gauge wires for power lines.
• Use 18 gauge wires for thermostat and sensor.
• If equipped with low ambient condition kit, use low ambient temperature
wiring diagrams.
• A safety switch is always recommended for the condensing unit.
NOTE:
• W is 24VAC output for HEATING relay.
Fig. 18 CT14~13TSD Electrical Wiring Diagram
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Fig. 19 CT12TSD Electrical Wiring Diagram
Fig. 20 CT34TSD Electrical Wiring Diagram
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Page 31
Fig. 21 Low Ambient Temperature
CT14~13TSD-LA Electrical Wiring Diagram
CT12TSD-LA Electrical Wiring Diagram
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Fig. 22 Low Ambient Temperature
Page 32
Fig. 23 Low Ambient Temperature
CT34TSD-LA Electrical Wiring Diagram
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Page 33
Customer Support
If you still have problems, please contact us at:
Apex
17631 South Susana Road
Rancho Dominguez, CA 90221
Tel: (310) 886-3332
Fax: (310) 886-3310
Email: [email protected]
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Page 34
Warranty
Thank you for choosing an Apex cooling unit.
Please enter the complete model and serial numbers in the space provided:
Model_________________________________________________________
Serial No.______________________________________________________
Attach your purchase receipt to this owner’s manual.
1. Limited Warranty
APEX warrants its products, parts only, to be free from defects due to
workmanship or materials under normal use and service for twelve months after
the initial sale. If the product is defective due to workmanship or materials, is
removed within twelve months of the initial sale and is returned to APEX, in the
original shipping carton, shipping prepaid, APEX will at its option, repair or
replace the product free of charge.
This warranty constitutes the entire warranty of the APEX with respect to its
products and is in lieu of all other warranties, express or implied, including any of
fitness for a particular purpose. In no event shall APEX be responsible for any
consequential damages what is so ever. Any modification of APEX products shall
void this warranty.
Service under Warranty
This service is provided to customers within the continental UNITED STATES
only. APEX cooling units are warranted to produce the stated number of BTU/H.
While every effort has been made to provide accurate guidelines, APEX can not
warranty its units to cool a particular enclosure.
In case of failure, APEX cooling units must be repaired by the factory or its
authorized agent. Repairs or modifications made by anyone else will void the
warranty.
Shall an APEX cooling unit fail, contact the dealer for instructions, do not return
the unit to the factory without authorization from APEX. If the unit requires repair,
re-pack it in the original shipping carton and return it to the factory, shipping
prepaid. APEX will not accept COD shipments. If the unit is determined to be
faulty and is within the twelve month warranty period APEX will, at its discretion,
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Page 35
repair or replace the unit and return it free of charge to the original retail
customer. If the unit is found to be in good working order, or beyond the initial
twelve month period, it will be returned freight collect.
2. Limitation of Implied Warranty
APEX’S SOLE LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO,
AT OUR OPTION, REPAIRING OR REPLACING OF UNIT.
APEX SHALL NOT BE LIABLE FOR:
DAMAGE TO OTHER PROPERTY CAUSED BY ANY DEFECTS IN THE UNIT,
DAMAGES BASED UPON INCONVENIENCE, LOSS OF USE OF THE UNIT,
LOSS OF TIME OR COMMERCIAL LOSS, ANY OUTER DAMAGES,
WHETHER INCIDENTAL, CONSEQUENTIAL OR OTHERWISE.
THIS WARRANTY IS EXCLUSIBE AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED OR INPLIED, INCLUDING BUT NOT LIMITED
TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
While great effort has been made to provide accurate guidelines APEX cannot
warrant its units to properly cool a particular enclosure. Customers are cautioned
that enclosure construction, unit location and many other factors can affect the
operation and performance of the unit. There for suitability of the unit for a
specific enclosure or application must be determined by the customer and cannot
be warranted by APEX.
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