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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 

 

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 
 

 

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 

 

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 

 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for CT12TSD

Page 1: ...Ceiling Split Cooling System Installation Operation Care Manual CT14TSD CT13TSD CT12TSD CT34TSD w ww ww w a ap pe ex xw wi in ne ec ce el ll la ar rs s c co om m R Re ea ad d a an nd d s sa av ve e t th he es se e i in ns st tr ru uc ct ti io on ns s ...

Page 2: ... 1 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 ...

Page 3: ...ble 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 ...

Page 4: ...perature 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 t...

Page 5: ...ensing 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 temperatur...

Page 6: ...lb Evap Unit Cond Unit CT14TSD WM 25SFCD 23x17 5x7 5 WM 250SCU 18x14 x12 2500 350 250 R134a 115V 60HZ 1A 115V 60HZ 5 7A 20 40 CT13TSD WM 45SFCD 23x17 5x10 5 WM 450SCU 18x14 x12 4500 460 1000 R134a 115V 60HZ 1A 115V 60HZ 6 9A 25 60 CT12TSD WM 65SFCD 29 875x21x11 75 WM 650SCU 24x18 x18 6500 660 1500 R134a 115V 60HZ 1 5A 115V 60HZ 12A 35 90 CT34TSD WM 85SFCD 29 875x21x13 5 WM 850SCU 24x18 x18 8500 81...

Page 7: ...ing operation 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 pres...

Page 8: ... 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 ...

Page 9: ...he 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 ...

Page 10: ...ver 0 manual 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 50 F 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 lock...

Page 11: ... 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 ...

Page 12: ...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 ...

Page 13: ...temperature is mainly controlled by the average air temperature If the set point is 55 F with the differential 4F the cooling unit turns on at 59 F of air temperature It may be higher than 59 F if it is in anti short cycle or defrost cycle and turns off at 55 F of air temperature The average air temperature is 57 F and then the wine temperature is around 57 0 5 F The air is light enough to change ...

Page 14: ... 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 8 Condenser fan running but compressor not running a Incorrect or loose wirings b Failed components c Liquid refrigerant in the compressor a Check all wirings and connections b Check start relay start capac...

Page 15: ... air flow restriction d Drain restricted or unit not level and water overflowing e Drip tray leak No overflow but leak 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 16 Excessive condensate in wine cellar a Air leak in the wine cellar causing excessive condensate b High humidity causing excessive c...

Page 16: ... 15 high ambient temperatures or airflow restriction d Defective components d Call service for checking internal loose inadequate lubrication and incorrect wirings ...

Page 17: ... 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 re...

Page 18: ... 17 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 ...

Page 19: ... 18 Fig 6 WM 65 85SFCD Evaporator Unit ...

Page 20: ... 19 Fig 7 WM 250 450SCU Condensing Unit Fig 8 WM 650 850SCU Condensing Unit ...

Page 21: ... 20 Fig 9 Liquid Filter Fig 10 Liquid Indicator Fig 11 Touch Screen Thermostat ...

Page 22: ... 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 ambi...

Page 23: ...dle 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 ...

Page 24: ...uction 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 ...

Page 25: ... 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 instal...

Page 26: ...g 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 condi...

Page 27: ... 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...

Page 28: ...at and high subcooling 15 low to normal suction pressure and high head pressure Normal to high superheat and high subcooling 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 restrict...

Page 29: ...res 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 ...

Page 30: ... 29 Fig 19 CT12TSD Electrical Wiring Diagram Fig 20 CT34TSD Electrical Wiring Diagram ...

Page 31: ... 30 Fig 21 Low Ambient Temperature CT14 13TSD LA Electrical Wiring Diagram Fig 22 Low Ambient Temperature CT12TSD LA Electrical Wiring Diagram ...

Page 32: ... 31 Fig 23 Low Ambient Temperature CT34TSD LA Electrical Wiring Diagram ...

Page 33: ... 32 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 info groupapex com ...

Page 34: ...press 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 effo...

Page 35: ...T 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...

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