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optional outdoor thermostat

An outdoor thermostat can be installed in the field with 2-stage 

electric heat. To install the outdoor thermostat, remove the 

orange wire from the E terminal on the terminal block, and 

connect to the outdoor thermostat. Connect the other side 

of the outdoor thermostat to 

W2

 from the thermostat.

optional electric Heater kits

This packaged air conditioner is designed to allow optional 

electric heat to be field installed as required by the building’s 

particular heating load. The options available for each unit 

are shown in the heater kit installation instructions.

Optional field-installed electric heater kits are available 

in 5 kw to 20 kw heating capacities for single phase, and  

9 kw to 15 kw heating capacities for three phase. A separate 

installation instruction document for the electric heaters and 

their application is shipped with the heater kits.

A single stage 24VAC thermostat should be used with 

these units. If electric heat is installed, a single-stage or 

two- stage heating thermostat will be required depending 

on the heater kit. Install the heater kits as directed by the 

instructions supplied with the heater kit. Follow all cautions 

and warnings as directed.

1. Measure the line voltages 

of your 3-phase power 

supply where it enters the 

building and at a location 

that will only be dedicated 

to the unit installation. (at 

the units circuit protection 

or disconnect).

exaMPle:

AB = 451V

BC = 460V

AC = 453V

2. Determine the average voltage in the power supply.

In this example, the measured line voltages were 451, 460, 

and 453. The average would be 454 volts (451 + 460 + 

453 = 1,364 / 3 = 454).

3. Determine the maximum deviation:

exaMPle

From the values given in step 1, the BC voltage (460V) is 

the greatest difference in value from the average:

460 - 454 = 6

454 - 451 = 3

454 - 453 = 1

4. Determine percent of 

voltage imbalance by using 

the results from steps 2 & 3 

in the following equation.

6

454

100 x

= 1.32%

exaMPle

max voltage deviation

from average voltage

= 100 x

average voltage

% Voltage Imbalance

The amount of phase imbalance (1.32%) is satisfactory 

since the amount is lower than the maximum allowable 2%. 

Please contact your local electric utility company if your 

voltage imbalance is more than 2%.

thermostat connections

Several thermostat options are available depending on the 
accessories installed with the unit. See 

Figure 11 (page 

16)

 for 208/230V units or 

Figure 12 (page 16)

 for 460V 

units. Select a thermostat that operates in conjunction with 

the installed accessories. The low voltage wires must be 

properly connected to the units low voltage terminal block. 

Recommended wire gauge and wire lengths for typical 
thermostat connections are listed in 

Table 3

.

iMPortant note:

the thermostat should be mounted about 5 feet above the 

floor on an inside wall. do not install the thermostat on 

an outside wall or any other location where its operation 

may be adversely affected by radiant heat from fireplaces, 

sunlight, or lighting fixtures, and convective heat from 

warm air registers or electrical appliances. refer to the 

thermostat manufacturer’s instruction sheet for detailed 

mounting and installation information.

table 2. copper Wire Size

coPPer Wire Size — aWg

(1% voltage droP)

SuPPly Wire lengtH-Feet

SuPPly

circuit

aMPacity

200

150

100

50

6

8

10

14

15

4

6

8

12

20

4

6

8

10

25

4

4

6

10

30

3

4

6

8

35

3

4

6

8

40

2

3

4

6

45

2

3

4

6

50

2

3

4

6

55

1

2

3

4

60

Wire Size based on N.E.C. for 60° type copper conductors.

table 3. thermostat Wire gauge

tHerMoStat

Wire gauge

MaxiMuM recoMMended

tHerMoStat Wire lengtH (Ft)

24

25

22

45

20

70

18

110

Summary of Contents for P8SD-X36C

Page 1: ...sense plays an important role as well Pay attention to all safety warnings and any other special notes highlighted in the manual Improper installation of the furnace or failure to follow safety warnings could result in serious injury death or property damage These instructions are primarily intended to assist qualified individuals experienced in the proper installation of this appliance Some local...

Page 2: ... 7 Horizontal to Downflow Conversion 7 Removal of Internal Filter Rack 7 Installing Filters in the Filter Rack 7 Removing Filters from Filter Rack 7 Condensate Drain 7 ELECTRICAL WIRING 8 Pre Electrical Checklist 8 Line Voltage 8 Grounding 8 Unbalanced 3 Phase Supply Voltage 8 Optional Outdoor Thermostat 9 Optional Electric Heater Kits 9 Airflow 10 Blower Speed 10 Fixed Torque ECM Motor 11 START U...

Page 3: ...all instructions before servicing this equipment Pay attention to all safety warnings and any other special notes highlighted in the manual Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored WARNING indicatesapotentiallyhazardoussituationthatifnotavoided couldresultinpersonalinjuryordeath CAUTIONindicatesa potentially ...

Page 4: ...e materials including gasoline and any other flammable vapors and liquids in the vicinity of the unit WARNING The safety information listed below must be followed during the installation service and operation of this unit Unqualified individuals shouldnotattempttointerprettheseinstructions or install this equipment Failure to follow safety recommendations could result in possible damage to the equ...

Page 5: ...sted for capacity and efficiency in accordance with AHRI Standards This unit will provide many years of safe and dependable comfort providing it is properly installed and maintained With regular maintenance this unit will operate reliably year after year Abuse improper use and or improper maintenance can shorten the life of the appliance and create unsafe hazards Pre Installation Check Before you ...

Page 6: ...t is the rigger s responsibility to ensure that whatever means are used to hoist the unit are safe and adequate The lifting equipment must be adequate for the load Refer to Table 6 page 13 for unit weights The unit must be lifted from the holes in the base rails using cables or chains Spreader bars are required to protect the unit and ensure even loading Keep the unit in an upright position at all...

Page 7: ... NOTE The assembly can now be easily collapsed and removed from the unit See Figure 5 for filter rack securing screw locations Installing Filters in the Filter Rack 1 Remove access panel screws from return air panel Hint Loosen the unit s top panel screws near the top edge of the access panel The access panel was designed to be captured underneath the top panel 2 Slide the first filter between bot...

Page 8: ...lance occurs when the voltages of all phases of a 3 phase power supply are no longer equal This unbalancereducesmotorefficiencyandperformance Some underlying causes of voltage unbalance may include Lack of symmetry in transmission lines large single phase loads andunbalancedoroverloadedtransformers Amotorshould never be operated when a phase imbalance in supply is greater than 2 Perform the follow...

Page 9: ...alues given in step 1 the BC voltage 460V is the greatest difference in value from the average 460 454 6 454 451 3 454 453 1 4 Determine percent of voltage imbalance by using the results from steps 2 3 in the following equation 6 454 100 x 1 32 Example max voltage deviation from average voltage 100 x average voltage Voltage Imbalance The amount of phase imbalance 1 32 is satisfactory since the amo...

Page 10: ... 19 1399 20 Tap 4 46 1968 14 1926 15 1873 15 1823 16 1774 16 1717 17 1665 17 1619 18 Tap 5 60 2242 13 2183 13 2143 13 2098 14 2044 14 1995 14 1953 15 1907 15 X60 Tap 1 21 1161 24 1116 25 1084 26 1031 28 954 30 895 32 834 34 779 37 Tap 2 31 1553 18 1521 19 1474 19 1437 20 1379 21 1335 21 1276 22 1183 24 Tap 3 40 1862 15 1818 16 1766 16 1731 16 1678 17 1635 17 1599 18 1539 18 Tap 4 46 2009 14 1973 1...

Page 11: ...ze 2 Feeltheairbeingcirculatedbytheindoorblowerandverify that it is cooler than ambient temperature Listen for any unusual noises If unusual sounds occur determine the source of the noise and correct as necessary 3 Allow the cooling system to operate for several minutes and then set the temperature selector above room temperature Verify the fan and compressor cycle off with the thermostat NOTE The...

Page 12: ...ipment and at listed airflows for the indoor coil Assemblies of indoor coils and outdoor units not listed are not recommended Charging the Unit in AC Mode Outdoor Temperatures Above 65F 1 With the system operating at steady state measure the liquid refrigerant pressure in psig at the service valve 2 Measure the liquid refrigerant temperature in Fahrenheit at the service valve 3 For the temperature...

Page 13: ...ioner Dimensions FIGURES TABLES Table 6 Center of Gravity Unit Shipping Weights Model Number P8SE Unit Shipping Weight Center of Gravity Height C in inches A B with base rails without base rails X36 375 29 20 5 35 0 30 76 X48 398 29 20 5 35 0 30 76 X60 437 27 25 23 5 43 0 39 3 NOTE To determine unit weight subtract 21lbs from unit shipping weight Top View 24 9 13 5 16 12 13 3 13 5 16 12 CG A 47 5 ...

Page 14: ...ions de plus de 150 V la terre 5 For supply wire ampacities and overcurrent protection see unit rating plate 711011A Replaces 7110110 11 14 1 2 3 4 5 6 7 8 9 R C S 1 5 2 6 3 4 TO 208 230 VAC POWER SUPPLY 9 8 1 7 6 5 4 3 2 9 8 1 7 6 5 4 3 2 9 8 1 7 6 5 4 3 2 9 8 1 7 6 5 4 3 2 COMPRESSOR COMPRESSOR CONTACTOR CAPACITOR PLUG A OUTDOOR FAN MOTOR PRESSURE SWITCH TO DISCHARGE AIR SENSOR 3 AMP FUSE T2 T1 ...

Page 15: ...GREEN RED RED RED BROWN ORANGE RED BLACK BLUE WHITE BLACK BLACK BLACK YELLOW BLACK BLUE BLACK WHITE RED YELLOW YELLOW BK BK BK WHITE WHITE WHITE WHITE WIRING DIAGRAM NOTES FIELD WIRING LEGEND LOW VOLTAGE HIGH VOLTAGE 460 Volt Convertable Packaged Air Conditioner Three Phase 60Hz 1 Disconnect all power before servicing 2 For supply connections use copper conductors only 3 If any of the original wir...

Page 16: ...SSORY HEAT PLUG C W1 R Y2 Y1 G TERMINAL STRIP Red Black Green FROMTRANSFORMER FROM CONTACTOR Optional Check T stat Instructions Figure 11 AC Thermostat Connections 208 230V 1 2 3 4 5 6 7 8 9 10 11 12 24V Common R Y2 C G W Gray Yellow Blue ECONOMIZER PLUG INDOOR THERMOSTAT SUB BASE 1 2 3 4 5 6 7 8 9 Orange ACCESSORY HEAT PLUG C W1 R Y2 Y1 G TERMINAL STRIP Red Black Green FROMTRANSFORMER FROM CONTAC...

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