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24

Table 8 — ECM Constant CFM Motor Blower Performance Data

LEGEND

— 

 Operation Not Recommended

PRE-START-UP

System Checkout — 

After completing the installation,

and before energizing the unit, the following system checks

should be made prior to initial start-up:

1. Verify that the supply voltage to the heat pump is in a

ccordance with the nameplate ratings.

2. Make sure that all electrical connections are tight and

secure.

3. Check the electrical fusing and wiring for the correct size.

 

4. Verify that the low voltage wiring between the thermostat

and the unit is correct.

5. Verify that the water piping is complete and correct.
6. Check that the water flow is correct, and adjust if

necessary.

7. Check the blower for free rotation, and that it is secured to

the shaft.

8. Verify that vibration isolation has been provided.
9. Unit is serviceable. Be certain that all access panels are

secured in place.

10. Always check incoming line voltage power supply and

secondary control voltage for adequacy. Transformer pri-

maries are dual tapped for 208 and 230 volts. Connect the

appropriate tap to ensure a minimum of 18 volts second-

ary control voltage. 24 volts is ideal for best operation.

11. Long length thermostat and control wiring leads may cre-

ate voltage drop. Increase wire gauge or up-size trans-

formers may be required to ensure minimum secondary

voltage supply.

12. The following guidelines are recommended for wiring

between a thermostat and the unit: 18 gage up to 60 ft,

16 gage up to 100 ft and 14 gage up to 140 ft.

13. Do not apply additional controlled devices to the control

circuit power supply without consulting the factory. Do-

ing so may void equipment warranties.

14. Check with all code authorities on requirements involv-

ing condensate disposal/over flow protection criteria.

AIR COIL — To obtain maximum performance, clean the air

coil before starting the unit. A 10% solution of dishwasher

detergent and water is recommended for both sides of the coil.

Rinse thoroughly with water. 

50PTH, 

PTV 

UNITS

FAN

SPEED

RATED

AIRFLOW

(Cfm)

ADJUSTMENT

TAP

AIRFLOW (Cfm)

External Static Pressure (in. wg)

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

024 

PART 

LOAD

High

725

+

A

725

725

725

725

725

725

725

725

Med

650

Normal

A

650

650

650

650

650

650

650

650

Low

500

-

A

500

500

500

500

500

500

500

500

024 

FULL 

LOAD

High

950

+

A

950

950

950

950

950

950

950

950

Med

825

Normal

A

825

825

825

825

825

825

825

825

Low

725

-

A

725

725

725

725

725

725

725

725

036 

PART 

LOAD

High

950

+

A

950

950

950

950

950

950

950

950

950

950

Med

800

Normal

A

800

800

800

800

800

800

800

800

800

800

Low

750

-

A

750

750

750

750

750

750

750

750

750

750

036 

FULL 

LOAD

High

1300

+

A

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

Med

1100

Normal

A

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

Low

950

-

A

950

950

950

950

950

950

950

950

950

950

048 

PART 

LOAD

High

1400

+

A

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

Med

1300

Normal

A

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

1,300

Low

1100

-

A

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

1,100

048 

FULL 

LOAD

High

1800

+

A

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

Med

1600

Normal

A

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

Low

1400

-

A

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

060 

PART 

LOAD

High

1800

+

A

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

Med

1600

Normal

A

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

Low

1400

-

A

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

1,400

060 

FULL 

LOAD

High

2200

+

A

2,200

2,200

2,200

2,200

2,200

2,200

2,200

2,200

2,200

2,200

Med

2000

Normal

A

2,000

2,000

2,000

2,000

2,000

2,000

2,000

2,000

2,000

2,000

Low

18000

-

A

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

1,800

070 

PART 

LOAD

High

2100

+

A

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

Med

1850

Normal

A

1,850

1,850

1,850

1,850

1,850

1,850

1,850

1,850

1,850

1,850

Low

1600

-

A

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

1,600

070 

FULL 

LOAD

High

2500

+

A

2,500

2,500

2,500

2,500

2,500

2,500

2,500

2,500

2,500

2,500

Med

2350

Normal

A

2,350

2,350

2,350

2,350

2,350

2,350

2,350

2,350

2,350

2,350

Low

2100

-

A

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

2,100

IMPORTANT: Ensure cabinet and electrical box are

properly grounded.

Summary of Contents for Aquazone 50PTH024

Page 1: ... and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform basic maintenance func tions such as cleaning coils and filters and replacing filters All other operations should be performed by trained service person...

Page 2: ... closet or mechanical room Space should be sufficient to allow return air to freely enter the space 9 Provide ready access to water valves and fittings and screwdriver access to unit side panels discharge collar and all electrical connections 10 Where access to side panels is limited pre removal of the control box side mounting screws may be necessary for future servicing STORAGE If the equipment ...

Page 3: ...se component failure due to added vibration UNIT 50PTH PTV 024 036 048 060 070 COMPRESSOR 1 each Scroll REFRIGERANT CHARGE VERTICAL oz 58 98 88 110 114 REFRIGERATION CHARGE HORIZONTAL ONLY oz 64 85 77 100 114 MAXIMUM WATER WORKING PRESSURE psig kPa 450 3 100 450 3 100 450 3 100 450 3 100 450 3 100 CONSTANT TORQUE FAN MOTOR BLOWER Fan Motor Type Speeds Constant Torque 5 speed Fan Motor Hp 0 33 0 75...

Page 4: ...4 Fig 1 50PTH024 070 Units Supply Air Configuration End Blow Dimensional Data ...

Page 5: ...5 Fig 2 50PTH024 070 Units Supply Air Configuration Straight Through Dimensional Data ...

Page 6: ...HAND RETURN J K L A A LEFT HAND RETURN F U T V W F U T W V ELECTRICAL KNOCKOUTS M N ELECTRICAL HEATER KNOCKOUT E G C D H B ELECTRIC HEATER IS OPTIONAL FEATURE CONDENSATE DRAIN CONNECTION 3 4 IN FPT NOTES 1 ALL DIMENSIONS ARE WITHIN 0 125 INCH 2 RETURN AND SUPPLY AIR DUCT FLANGES SHIPPED UNFOLDED 3 ALL DIMENSIONS ARE IN INCHES 4 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE ...

Page 7: ...uct connections on metal duct systems All metal ducting should be insulated with a minimum of 1 in duct insulation to avoid heat loss or gain and prevent condensate forming during the cooling operation Application of the unit to uninsulated ductwork is not recommended as the unit s performance will be adversely affected The factory provided air filter must be removed when using a filter back retur...

Page 8: ... a common loop maintained at 50 to 100 F The use of a closed circuit evaporative cooling tower with a secondary heat exchange be tween the tower and the water loop is recommended If an open type cooling tower is used continuously chemical treatment and filtering will be necessary In addition to complying with any applicable codes consid er the following for system piping Piping systems using water...

Page 9: ...ent to ppm IMPORTANT Failure to comply with the above required water quality and quantity limitations and the closed system application design requirements may cause damage to the tube in tube heat exchanger This damage is not the responsibility of the manufacturer CONDITION HX MATERIAL CLOSED RECIRCULATING OPEN LOOP AND RECIRCULATING WELL Scaling Potential Primary Measurement Above the given limi...

Page 10: ... obtained from alternate suppliers Supply and return hoses are fitted with swivel joint fittings at one end to prevent kink ing during installation Refer to Fig 7 for an illustration of a supply return hose kit Male adapters secure hose assemblies to the unit and risers In stall hose assemblies properly and check them regularly to avoid system failure and reduced service life Step 8 Wire Field Pow...

Page 11: ...60 197 253 1 11 7 58 3 2 8 17 4 25 2 8 17 4 25 8733801381 265 277 1 60 1 9 1 54 0 2 6 14 0 20 2 6 14 0 20 8733801385 208 230 3 60 197 253 1 6 5 55 4 2 8 10 9 15 2 8 10 9 15 8733801392 460 3 60 1 3 5 28 0 2 1 6 4 15 2 6 6 9 15 50PT036 8733902169 208 230 1 60 197 253 1 15 3 83 0 6 0 25 1 35 6 8 25 9 35 8733801382 265 277 1 60 1 13 0 72 0 4 9 21 2 30 5 5 21 8 35 8733801386 208 230 3 60 197 253 1 11 6...

Page 12: ...1 9 7 6 F1 F2 84 5 74 4 90 80 F3 F4 19 2 2 19 200 14 000 80 0 69 2 7 6 F1 F2 109 5 96 0 110 100 F3 F4 EH Electric Heat FLA Full Load Amps MCA Minimum Circuit Amps MOP Maximum Overcurrent Protection UNIT SIZE EH RATED kW STAGE HEATER WATTS HEATER AMPS MOTOR FLA A CIRCUIT MCA MOP 240 208 240 208 FUSES 240 208 240 208 024 4 8 1 4 800 3 600 20 0 17 3 2 8 28 5 25 1 30 30 036 4 8 1 4 800 3 600 20 0 17 3...

Page 13: ...EEZE SENSOR IS NOT INSTALLED A JUMPER SHALL BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 7 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 8 DEFAULT SETTINGS FOR COMPLETE C BOARD FROM FACTORY SHOWN 9 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC WILL BE SENSED ON THE ALR OUT WHEN THE UN...

Page 14: ...EFAULT IF 15 F OPERATION IS REQUIRED JUMPER R30 MUST BE CUT IF FREEZE SENSOR IS NOT INSTALLED A JUMPER SHALL BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 7 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 8 DEFAULT SETTINGS FOR COMPLETE C BOARD FROM FACTORY SHOWN 9 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ...

Page 15: ...N IS REQUIRED JUMPER R30 MUST BE CUT IF FREEZE SENSOR IS NOT INSTALLED A JUMPER SHALL BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 8 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 9 DEFAULT SETTINGS FOR DELUXE D BOARD FROM FACTORY SHOWN 10 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC ...

Page 16: ... DEFAULT IF 15 F OPERATION IS REQUIRED JUMPER R30 MUST BE CUT IF FREEZE SENSOR IS NOT INSTALLED A JUMPER SHALL BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 8 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 9 DEFAULT SETTINGS FOR DELUXE D BOARD FROM FACTORY SHOWN 10 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO...

Page 17: ...IS NOT INSTALLED A JUMPER SHALL BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 7 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 8 DEFAULT SETTINGS FOR COMPLETE C BOARD FROM FACTORY SHOWN 9 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC WILL BE SENSED ON THE ALR OUT WHEN THE UNIT IS IN ALA...

Page 18: ... BE INSTALLED BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 7 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 8 DEFAULT SETTINGS FOR DELUXE D BOARD FROM FACTORY SHOWN 9 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC WILL BE SENSED ON THE ALR OUT WHEN THE UNIT IS IN ALARM CONDITION OUTPUT WILL BE PULSE...

Page 19: ...BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 7 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 8 DEFAULT SETTINGS FOR COMPLETE C BOARD FROM FACTORY SHOWN 9 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC WILL BE SENSED ON THE ALR OUT WHEN THE UNIT IS IN ALARM CONDITION OUTPUT WILL BE PULSED IF PULSE I...

Page 20: ... BETWEEN THE FREEZE1 OR FREEZE2 SENSOR TERMINALS 8 ALARM OUTPUT DIP SWITCH MUST BE SET TO PULSE IF BLINKING T STAT SERVICE LIGHT IS DESIRED 9 DEFAULT SETTINGS FOR DELUXE D BOARD FROM FACTORY SHOWN 10 ALARM OUTPUT IS NORMALLY OPEN NO DRY CONTACT IF 24 VAC IS NEEDED CONNECT R TO ALR COM TERMINAL 24 VAC WILL BE SENSED ON THE ALR OUT WHEN THE UNIT IS IN ALARM CONDITION OUTPUT WILL BE PULSED IF PULSE I...

Page 21: ...e freeze protection sensor mounted close to condensing water coil monitors refrigerant temperature between condensing water coil and thermal expansion valve See Fig 19 If temperature drops below or remains at freeze limit trip for 30 seconds the controller will shut down the compressor and enter into a soft lock out condition The default freeze limit trip is 30 F how ever this can be changed to 15...

Page 22: ... 2 is dedicated to monitor the evapo rator coil it is recommended to leave the factory default setting on the board The Complete C controller will constantly moni tor the refrigerant temperature with the sensor mounted close to the condensing water coil between the thermal expansion valve and water coil If temperature drops below or remains at the freeze limit trip for 30 seconds the controller wi...

Page 23: ... 100 1 056 1 006 942 860 3 950 1 354 1 233 1 138 1 063 1 002 950 901 850 791 719 2 800 PL Fan Only 1 294 1 157 1 041 946 866 800 744 696 653 611 1 750 1 213 1 084 976 886 812 750 698 653 612 573 048 5 1800 FL 1 950 1 912 1 880 1 852 1 826 1 800 1 771 1 737 1 695 1 644 4 1600 1 774 1 738 1 703 1 669 1 635 1 600 1 562 1 521 1 475 1 423 3 1400 1 565 1 526 1 493 1 463 1 432 1 400 1 363 1 319 1 265 1 1...

Page 24: ...ernal Static Pressure in wg 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 1 00 024 PART LOAD High 725 A 725 725 725 725 725 725 725 725 Med 650 Normal A 650 650 650 650 650 650 650 650 Low 500 A 500 500 500 500 500 500 500 500 024 FULL LOAD High 950 A 950 950 950 950 950 950 950 950 Med 825 Normal A 825 825 825 825 825 825 825 825 Low 725 A 725 725 725 725 725 725 725 725 036 PART LOAD High 950 A 9...

Page 25: ...ompressor will start Unit Start Up Cooling Mode 1 Adjust the unit thermostat to the warmest position Slowly reduce the thermostat position until the compres sor activates 2 Check for cool air delivery at unit grille a few minutes after the unit has begun to operate 3 Verify that the compressor is on and that the water flow rate is correct by measuring pressure drop through the heat exchanger using...

Page 26: ...l is less than 1 to 2 in reverse the flow 8 Repeat this procedure until all air is purged 9 Restore power Antifreeze may be added before during or after the flush ing process However depending on when it is added in the process it can be wasted Refer to the Antifreeze section for more detail Loop static pressure will fluctuate with the seasons Pres sures will be higher in the winter months than du...

Page 27: ... test mode LOCKOUT WITH EMERGENCY HEAT While in Lock out mode if W becomes active then Emergency Heat mode will occur EMERGENCY HEAT In Emergency Heat mode terminal W is active while terminal Y is not Terminal G must be active in the 50PT units the fan will be run if W is energized EH1 is immediately turned on EH2 will turn on Units with Aquazone Deluxe D Control STANDBY FAN ONLY The compressor wi...

Page 28: ...ronment the equipment is used in In a single family home that is not under construction changing or clean ing the filter every 60 days may be sufficient In other applica tions such as motels where daily vacuuming produces a large amount of lint filter changes may be need to be as frequent as biweekly See Fig 1 3 for replacement filter sizes Note that horizontal units containing two filters are tap...

Page 29: ...2 FORCED CIRCULATION METHOD Fully open vent pipe when filling condenser The vent may be closed when condenser is full and pump is operating See Fig 23 Regulate flow to condenser with a supply line valve If pump is a nonoverloading type the valve may be fully closed while pump is running For average scale deposit allow solution to remain in con denser overnight For heavy scale deposit allow 24 hour...

Page 30: ...pressure exerted by the diaphragm will vary depending on the pressure inside of the sensing bulb As the temperature of and pressure within the bulb decreases the valve will modulate closed and restrict the refrigerant flow through the valve The result is less refrigerant in the evaporator and an increase in the superheat As the temperature at the bulb increases the dia phragm pressure will increas...

Page 31: ...bove FP2 faults in the cooling mode in combination with any of the symptoms listed above Some symptoms can mimic a failed TXV but may actually be caused be another problem Before conducting an analysis for a failed TXV the follow ing must be verified Confirm that there is proper water flow and water tem perature in the heating mode Confirm that there is proper airflow and temperature in the coolin...

Page 32: ...stems that contain R 22 refrigerants or mineral oil Contamina tion and failure of this equipment may result IMPORTANT Due to the hygroscopic nature of the POE oil in Puron refrigerant R 410A and other envi ronmentally sound refrigerants any component replace ment must be conducted in a timely manner using caution and proper service procedure for these types of refrigerants A complete installation ...

Page 33: ...cover refrigerant evacuate and recharge with fac tor recommended charge High pressure Check for defective or improperly calibrated high pressure switch Unit off on low pressure control Suction pressure too low In COOLING mode Lack of or inadequate airflow Entering air temperature is too cold Blower inoperative clogged filter or restrictions in ductwork In HEATING mode Lack of or inadequate water f...

Page 34: ...to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500104 01 Printed in U S A Form 50PT 5SI Pg 34 1218 6 14 Replaces NEW Carrier Corporation 2014 8733953040 ...

Page 35: ... FLUID AVAILABLE AT HEAT EXCHANGER Y N HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN Y N HAS CONDENSATE CONNECTION BEEN MADE AND IS ATRAP INSTALLED Y N IS AN AIR FILTER INSTALLED Y N II START UP IS FAN OPERATING WHEN COMPRESSOR OPERATES Y N IF 3 PHASE SCROLL COMPRESSOR IS PRESENT VERIFY PROPER ROTATION PER INSTRUCTIONS Y N UNIT VOLTAGE COOLING OPERATION PHASE AB VOLTS PHASE BC VOLTS PHASE ...

Page 36: ...D FACTOR Btu hr SUPERHEAT SUCTION TEMPERATURE SUCTION SATURATION TEMPERATURE DEG F SUBCOOLING DISCHARGE SATURATION TEMPERATURE LIQUID LINE TEMPERATURE DEG F Use 500 for water 485 for antifreeze SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE F F AIR COIL F PSI FLUID OUT FLUID IN F PSI F LIQUID LINE PSI F SAT CONTACT CARRIER COMMERCIAL SERVICES OR PRODUCT MANAGEMENT FOR ACCEPTABLE PRESSURE DROP T...

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