Bryant 588A Installation, Start-Up And Service Instructions Manual Download Page 14

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Table 1 — Physical Data — Unit 588A

UNIT SIZE 588A

018040

024040

024060

030040

030060

030080

036060

036080

036100

036120

NOMINAL CAPACITY (ton)

⁄

OPERATING WEIGHT (lb)

Without Base Rail

272

303

315

320

332

336

348

With Optional Base Rail

296

327

339

344

356

360

372

COMPRESSORS

Rotary

Reciprocating

Quantity

REFRIGERANT (R-22)

Charge (lb)

2.60

2.75

3.40

4.30

REFRIGERANT METERING DEVICE

Acutrol™ Device

Orifice ID (in.)

.030

.032

CONDENSER COIL

Rows...Fins/in.

1...17

2...17

Face Area (sq ft)

5.95

CONDENSER FAN

Nominal Cfm

1700

1900

Diameter (in.)

Motor Hp (Rpm)

⁄

(850)

⁄

(850)

⁄

(850)

⁄

(850)

⁄

(850)

⁄

(850)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

EVAPORATOR COIL

Rows Fins/in.

3...15

Face Area (sq ft)

1.83

2.29

3.06

EVAPORATOR FAN

Direct Drive

Nominal Airflow (Cfm)

600

800

1000

1200

Size (in.)

10 x 10

Motor Hp

⁄

FURNACE SECTION*

Burner Orifice (Qty...drill size)

Natural Gas

1...32

2...40

1...32

2...40

2...32

2...40

2...32

2...30

3...32

Burner Orifice (Qty...drill size)

Propane Gas

1...41

2...47

1...41

2...47

2...42

2...47

2...42

2...40

3...42

RETURN-AIR FILTERS (in.)†

Throwaway

20 x 20

20 x 24

UNIT SIZE 588A

042060

042080

042100

042120

048080

048100

048120

048140

060080

060100

060120

060140

NOMINAL CAPACITY (ton)

⁄

OPERATING WEIGHT (lb)

Without Base Rail

375

387

414

426

453

465

With Optional Base Rail

399

411

438

450

477

489

COMPRESSORS

Reciprocating

Hermetic Scroll

Quantity

REFRIGERANT (R-22)

Charge (lb)

5.20

6.50

7.00

REFRIGERANT METERING

Acutrol Device

DEVICE

Orifice ID (in.)

.034

.030

CONDENSER COIL

Rows...Fins/in.

2...17

Face Area (sq ft)

7.04

8.67

CONDENSER FAN

Nominal Cfm

1900

2400

Diameter (in.)

Motor Hp (Rpm)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

⁄

(1050)

EVAPORATOR COIL

Rows Fins/in.

3...15

4...15

Face Area (sq ft)

3.33

4.44

EVAPORATOR FAN

Direct Drive

Nominal Airflow (Cfm)

1400

1600

1995

Size (in.)

10 x 10

10 x 11

Motor Hp

⁄

FURNACE SECTION*

Burner Orifice (Qty...drill size)

Natural Gas

2...40

2...32

2...30

3...32

2...32

2...30

3...32

3...31

2...32

2...30

3...32

3...31

Burner Orifice (Qty...drill size)

Propane Gas

2...47

2...42

2...40

3...42

2...42

2...40

3...42

3...40

3...42

2...40

3...42

3...40

RETURN-AIR FILTERS (in.)†

Throwaway

24 x 24

24 x 30

*Based on altitude of 0-2000 feet.

†Required filter sizes shown are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated

cooling airflow or the heating airflow at a velocity of 300 ft/min for throwaway type or 450 ft/min for high-capacity
type. For non-standard air filters, air filter pressure drop must not exceed 0.08 in. wg.

—14—

Summary of Contents for 588A

Page 1: ...ould install repair or service air conditioning equipment Untrained personnel can perform basic maintenance func tions of cleaning coils and filters All other operations should be performed by trained service personnel When working on air conditioning equipment observe precautions in the lit erature tags and labels attached to the unit and other safety precautions that may apply Follow all safety ...

Page 2: ... 332 149 103 46 50 22 129 58 50 23 24 1 613 036060 080 208 230 1 60 208 230 3 60 460 3 60 336 153 86 39 76 35 111 50 63 29 24 1 613 036100 120 208 230 1 60 208 230 3 60 460 3 60 348 158 89 40 79 36 114 52 66 30 24 1 613 042060 080 208 230 1 60 208 230 3 60 460 3 60 375 170 95 43 86 39 119 54 75 34 28 1 714 042100 120 208 230 1 60 208 230 3 60 460 3 60 387 176 98 45 89 40 122 55 78 35 28 1 714 UNIT...

Page 3: ...46 71 32 123 56 60 27 27 4 697 036060 080 208 230 1 60 208 230 3 60 460 3 60 360 164 92 42 82 37 117 53 69 31 27 4 697 036100 120 208 230 1 60 208 230 3 60 460 3 60 372 169 95 43 85 39 120 55 72 33 27 4 697 042060 080 208 230 1 60 208 230 3 60 460 3 60 399 181 101 46 92 42 125 57 81 37 31 4 798 042100 120 208 230 1 60 208 230 3 60 460 3 60 411 187 104 47 95 43 128 58 84 38 31 4 798 UNIT 588A F in ...

Page 4: ... 3 60 460 3 60 414 188 107 49 83 38 158 72 66 30 048100 120 140 208 230 1 60 208 230 3 60 460 3 60 426 193 110 50 86 39 159 72 71 32 060080 208 230 1 60 208 230 3 60 460 3 60 453 206 117 53 93 42 167 76 76 35 060100 120 140 208 230 1 60 208 230 3 60 460 3 60 465 211 120 55 96 44 167 76 82 37 UNIT 588A CENTER OF GRAVITY in mm X Y Z 048080 28 76 731 23 46 596 15 35 390 048100 120 140 28 42 722 23 42...

Page 5: ... 438 199 113 51 89 40 164 75 72 33 048100 120 140 208 230 1 60 208 230 3 60 460 3 60 450 205 116 53 92 42 165 75 77 35 060080 208 230 1 60 208 230 3 60 460 3 60 477 217 123 56 99 45 173 79 82 37 060100 120 140 208 230 1 60 208 230 3 60 460 3 60 489 222 126 57 102 46 173 79 88 40 UNIT 588A CENTER OF GRAVITY in mm X Y Z 048080 28 54 724 9 20 00 508 17 66 448 6 048100 120 140 28 22 716 8 20 05 509 3 ...

Page 6: ...3 24 133 60 52 24 030040 208 230 1 60 336 153 97 44 66 30 118 54 55 25 030060 080 208 230 1 60 348 158 100 45 69 31 121 55 58 26 036060 080 208 230 1 60 208 230 3 60 460 3 60 366 166 94 43 84 38 117 53 71 32 036100 120 208 230 1 60 208 230 3 60 460 3 60 378 172 97 44 87 40 120 55 74 34 UNIT 589A CENTER OF GRAVITY in mm X Y Z 024040 26 71 678 20 06 510 12 65 321 024060 26 64 677 20 12 511 12 65 321...

Page 7: ...0 208 230 1 60 360 164 103 47 72 33 124 56 61 28 030060 080 208 230 1 60 372 169 106 48 75 34 127 58 64 29 036060 080 208 230 1 60 208 230 3 60 460 3 60 390 177 100 45 90 41 123 56 77 35 036100 120 208 230 1 60 208 230 3 60 460 3 60 402 183 103 47 93 42 127 57 80 36 UNIT 589A CENTER OF GRAVITY in mm X Y Z 024040 26 57 674 9 20 17 512 3 14 96 380 0 024060 26 51 673 3 20 22 513 6 14 96 380 0 030040 ...

Page 8: ...7 94 43 123 56 83 38 048080 208 230 1 60 208 230 3 60 460 3 60 422 192 109 50 85 39 158 72 70 32 048100 120 140 208 230 1 60 208 230 3 60 460 3 60 434 197 112 51 88 40 161 73 73 33 060080 208 230 1 60 208 230 3 60 453 206 117 53 93 42 167 76 76 35 060100 120 140 208 230 1 60 208 230 3 60 465 211 120 55 96 44 167 76 82 37 UNIT 589A CENTER OF GRAVITY in mm X Y Z 042060 080 26 66 677 21 19 538 15 35 ...

Page 9: ...40 208 230 1 60 208 230 3 60 460 3 60 458 208 118 54 94 43 167 76 79 36 060080 208 230 1 60 208 230 3 60 477 217 123 56 99 45 173 79 82 37 060100 120 140 208 230 1 60 208 230 3 60 489 222 126 57 102 46 173 79 88 40 UNIT 589A CENTER OF GRAVITY in mm X Y Z 042060 080 26 55 674 4 21 22 539 0 17 66 448 6 042100 120 26 50 673 0 21 24 539 6 17 66 448 6 048080 28 25 717 6 20 04 509 0 17 66 448 6 048100 1...

Page 10: ... is provided with flanges on the hori zontal openings All ductwork should be secured to the flanges Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes Ducts passing through an unconditioned space must be in sulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return shou...

Page 11: ...talled 2 Seal strip must be applied as required for unit being installed 3 Dimensions in are in millimeters 4 Roof curb is made of 16 gage steel 5 Attach ductwork to curb flanges of duct rest on curb 6 Service clearance 4 ft on each side 7 Direction of airflow 8 Insulated panels 1 in thick fiberglass 1 lb density Fig 10 Roof Curb Dimensions 11 ...

Page 12: ...ing unit CAUTION All panels must be in place when rigging UNIT 588A MAX WEIGHT A B C Size lb kg in mm in mm in mm 018 332 150 49 4 1255 24 3 618 24 85 631 024 375 170 22 4 570 24 85 631 030 384 174 22 3 565 24 85 631 036 408 185 22 0 559 24 85 631 042 447 203 22 5 571 28 85 733 048 486 220 21 0 533 34 85 885 060 525 238 21 5 545 34 85 885 UNIT 589A 024 405 184 49 4 1255 22 8 579 28 9 733 030 408 1...

Page 13: ...a single screw on the right side the left side and the top of the hood VIII STEP 8 INSTALL GAS PIPING The gas supply pipe enters the unit through the access hole provided The gas connection to the unit is made to the 1 2 in FPT gas inlet on the manual shutoff or gas valve Install a gas supply line that runs to the heating section Re fer to Table 3 and the NFGC for gas pipe sizing Do not use cast i...

Page 14: ...TING WEIGHT lb Without Base Rail 375 375 387 387 414 426 426 426 453 465 465 465 With Optional Base Rail 399 399 411 411 438 450 450 450 477 489 489 489 COMPRESSORS Reciprocating Hermetic Scroll Quantity 1 1 REFRIGERANT R 22 Charge lb 5 20 5 20 5 20 5 20 6 50 6 50 6 50 6 50 7 00 7 00 7 00 7 00 REFRIGERANT METERING Acutrol Device DEVICE Orifice ID in 034 034 034 034 030 030 030 030 030 030 030 030 ...

Page 15: ...15 427 427 446 458 458 458 477 489 489 489 COMPRESSORS Scroll Quantity 1 REFRIGERANT R 22 Charge lb 5 7 5 7 5 7 5 7 5 8 5 8 5 8 5 8 7 00 7 00 7 00 7 00 REFRIGERANT METERING Acutrol Device DEVICE Orifice ID in 034 034 034 034 034 034 034 034 030 030 030 030 CONDENSER COIL Rows Fins in 2 17 2 17 2 17 2 17 2 17 2 17 2 17 2 17 2 17 2 17 2 17 2 17 Face Area sq ft 8 7 8 7 8 7 8 7 8 7 8 7 8 7 8 7 8 67 8 ...

Page 16: ...ws 3 Locate lances in basepan insulation that are placed over the perimeter of the vertical duct opening cover Fig 17 4 Using a straight edge and sharp knife cut and remove the insulation around the perimeter of the cover Re move and save 5 screws securing the cover to the base pan and slide out the cover Discard the cover Fig 18 5 Remove supply duct cover located on duct panel Figure 16 shows duc...

Page 17: ...00 360 325 300 280 11 2 1 610 2100 1460 1180 990 900 810 750 690 650 620 550 500 460 430 Capacity of pipe in cu ft of gas per hr for gas pressure of 0 5 psig or less Pressure drop of 0 5 in wg based on a 0 60 specific gravity gas Refer to Table C 4 National Fire Protection Association NFPA 54 This length includes an ordinary number of fittings SUPPLY DUCT OPENING RETURN DUCT OPENING Fig 16 Supply ...

Page 18: ...A Canadian Standards Asso ciation C22 1 and local electrical codes Do not use gas piping as an electrical ground Failure to adhere to this warning could result in personal injury or death CAUTION Failure to follow these precautions could result in damage to the unit being installed 1 Make all electrical connections in accordance with NEC ANSI NFPA latest edition and local electrical codes gov erni...

Page 19: ...Load Amps HACR Heating Air Conditioning and Refrigeration LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection RLA Rated Load Amps Fuse or HACR Breaker Carrier Scroll Compressor Copeland Scroll Compressor NOTES 1 In compliance with NEC National Electrical Code requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent ...

Page 20: ...mps Fuse or HACR Breaker Carrier Scroll Compressor Copeland Scroll Compressor NOTES 1 In compliance with NEC National Electrical Code requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be fuse or HACR breaker The CGA Canadian Gas Associa tion units may be fuse or circuit breaker 2 Minimum wire size is ba...

Page 21: ...llow brown and white See Fig 21 Ensure the leads are long enough to be routed into the low voltage splice box located below right side of control box Cut wires at the point where they exit control box do NOT cut yellow wire on 589A024 030 units Stripped yellow wire is located in connec tion box Route leads through hole in bottom of control box and make low voltage connections as shown in Fig 21 Se...

Page 22: ...d reclaim all refrigerant from system be fore touching or disturbing anything inside termi nal box if refrigerant leak is suspected around com pressor terminals 5 Never attempt to repair soldered connection while refrigerant system is under pressure 6 Do not use torch to remove any component System contains oil and refrigerant under pressure To re move a component wear protective goggles and pro c...

Page 23: ...cess door to start the heating section NOTE Make sure that gas supply has been purged and that all gas piping has been checked for leaks A Check Heating Control Start and check the unit for proper heating control operation as follows See furnace lighting instructions located inside burner or blower access panel 1 Place the room thermostat SYSTEM switch in the HEAT position and the fan switch in th...

Page 24: ...s measured at the meter Proceed as follows 1 Turn off gas supply to unit 2 Remove pipe plug on manifold see Fig 24 then con nect manometer at this point Turn on gas to unit 3 Record number of seconds for gas meter test dial to make one revolution 4 Divide number of seconds in Step 3 into 3600 number of seconds in one hour 5 Multiply result of Step 4 by the number of cu ft shown for one revolution ...

Page 25: ...ave blue flame with yellow tips See Fig 25 Refer to Maintenance section for information on burner removal E Airflow and Temperature Rise The heating section for each size unit is designed and ap proved for heating operation within the temperature rise range stamped on the unit rating plate Table 6 shows the approved temperature rise range for each heating input and the air delivery cfm at various ...

Page 26: ...he function of the switch is to close the main gas valve in the event of flame rollout The switch is located above the main burners When the temperature at the auxiliary switch reaches the maximum allowable temperature the R control circuit trips closing the gas valve and stopping gas flow to the burners The indoor evaporator fan motor IFM and in duced draft motor continue to run until switch is r...

Page 27: ...ctor LS Limit Switch MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original w...

Page 28: ...ctor LS Limit Switch MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original w...

Page 29: ...witch MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original wire furnished m...

Page 30: ...as Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch ST Start Thermistor TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original wire furnish...

Page 31: ... Switch MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch SEC Secondary TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original ...

Page 32: ...MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original wire furnished must be...

Page 33: ... Switch MGV Main Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch SEC Secondary TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original ...

Page 34: ...ain Gas Valve NEC National Electrical Code OFM Outdoor Fan Motor PWR Power QT Quadruple Terminal RS Rollout Switch TRAN Transformer Field Splice Terminal Marked Terminal Unmarked Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not to Represent Wiring NOTES 1 If any of the original wire furnished must be repl...

Page 35: ...igerant leak refer to Check for Refrigerant Leaks section on page 23 C Indoor Airflow and Airflow Adjustments CAUTION For cooling operation the recommended airflow is 350 to 450 cfm for each 12 000 Btuh of rated cooling capacity For heating operation the airflow must produce a temperature rise that falls within the range stamped on the unit rating plate Table 6 shows the temperature rise at variou...

Page 36: ...nces system efficiency 45 Sec Off Delay 4 Enhances system efficiency Table 8A Superheat Charging Table 588A018 TEMP F OUTDOOR ENTERING AIR INDOOR AIR CFM 600 Indoor Air Ewb F 54 56 58 60 62 64 66 68 70 72 74 76 65 SPH 17 3 18 5 19 6 20 8 24 2 27 7 28 5 29 3 29 3 29 3 29 3 29 3 70 SPH 13 8 14 9 16 1 17 3 20 7 24 1 25 7 27 3 27 3 27 3 27 3 27 3 75 SPH 10 2 11 4 12 5 13 7 17 1 20 6 22 9 25 2 25 2 25 ...

Page 37: ... 7 18 7 20 7 22 0 23 4 24 8 26 1 70 SPH 5 0 5 0 5 0 5 0 9 0 13 1 15 9 18 6 20 0 21 3 22 7 24 0 75 SPH 5 4 9 6 13 1 16 6 17 9 19 3 20 6 22 0 80 SPH 6 0 10 3 14 5 15 9 17 3 18 6 20 0 85 SPH 7 5 12 5 13 9 15 2 16 5 17 9 90 SPH 5 4 10 4 12 5 14 6 16 8 18 8 95 SPH 8 4 11 3 14 1 17 0 19 8 100 SPH 6 4 10 0 13 5 17 1 20 7 105 SPH 8 7 13 0 17 3 21 7 110 SPH 9 3 12 4 15 6 18 7 115 SPH 10 0 11 9 13 8 15 8 LE...

Page 38: ...4 6 17 2 18 9 20 6 22 3 24 0 25 8 27 5 80 SPH 8 4 8 4 8 4 8 4 11 0 13 7 15 4 17 0 19 5 22 0 24 5 27 0 85 SPH 5 0 5 0 5 0 5 0 7 5 10 1 11 8 13 5 16 7 20 0 23 2 26 4 90 SPH 6 6 9 0 11 4 14 7 17 9 21 1 24 4 95 SPH 6 2 9 4 12 6 15 9 19 1 22 3 100 SPH 7 3 10 6 13 8 17 0 20 3 105 SPH 5 3 8 5 11 8 15 0 18 2 110 SPH 6 9 11 2 15 5 19 8 115 SPH 5 3 10 6 16 0 21 3 LEGEND Ewb Entering Wet Bulb SPH Superheat a...

Page 39: ...14 7 20 0 20 7 21 4 22 1 22 1 22 0 80 SPH 8 5 13 5 18 5 19 3 20 2 21 0 21 6 22 1 85 SPH 7 6 12 3 17 0 18 0 18 9 19 9 21 1 22 3 90 SPH 10 0 14 2 16 0 17 8 19 6 20 7 21 8 95 SPH 7 7 11 5 14 1 16 7 19 2 20 2 21 2 100 SPH 5 7 9 9 14 0 18 2 19 4 20 6 105 SPH 5 7 11 4 17 1 18 6 20 1 110 SPH 8 9 13 5 15 8 18 0 115 SPH 10 0 13 0 16 0 LEGEND Ewb Entering Wet Bulb SPH Superheat at Compressor F Do not attemp...

Page 40: ... 80 SPH 20 6 20 6 20 6 20 6 20 5 20 4 20 3 21 4 22 4 23 5 22 4 21 4 85 SPH 18 3 18 3 18 3 18 3 18 3 18 3 18 3 19 8 21 4 22 9 21 8 20 6 90 SPH 13 3 13 3 13 3 13 3 14 2 15 2 16 3 17 8 19 3 20 9 20 4 19 9 95 SPH 8 2 8 2 8 2 8 2 10 2 12 2 14 2 15 7 17 3 18 8 19 0 19 2 100 SPH 6 3 8 4 10 6 12 9 15 2 17 5 18 1 18 7 105 SPH 7 1 10 1 13 1 16 1 17 1 18 2 110 SPH 7 1 10 5 14 0 15 3 16 6 115 SPH 8 0 12 0 13 ...

Page 41: ...24 1282 1223 1156 1068 984 857 036 Low Watts 473 447 427 418 395 367 346 337 323 Cfm 1253 1253 1172 1130 1047 946 865 829 768 Med Watts 519 500 478 459 439 410 377 357 340 Cfm 1414 1366 1287 1234 1162 1074 920 829 743 High Watts 667 634 609 593 564 541 506 469 436 422 Cfm 1734 1639 1563 1461 1370 1292 1157 960 829 743 042 Low Watts 678 635 604 580 550 520 493 455 430 Cfm 1540 1515 1475 1430 1375 1...

Page 42: ...ble for ducting Unit air delivery is outside of operating range NOTE Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling capacity Evaporator coil icing may occur at airflows below this point Water blow off may occur at airflows above 450 cfm per 12 000 Btuh of rated cooling capacity Table 13 Dry Coil Air Delivery Horizontal Discharge at 230 ...

Page 43: ... of operating range For 460 v units only NOTE Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling capacity Evaporator coil icing may occur at airflows below this point Water blow off may occur at air flows above 450 cfm per 12 000 Btuh of rated cooling capacity Table 15 Dry Coil Air Delivery Heating Horizontal and Downflow Discharge for Inte...

Page 44: ...g high performance and to minimize the possibility of premature equipment failure periodic mainte nance must be performed on this equipment This combina tion heating cooling unit should be inspected at least once each year by a qualified service person To troubleshoot heating or cooling of units refer to tables at the back of the book NOTE TO EQUIPMENT OWNER Consult your local dealer about the ava...

Page 45: ...ve blower access door b On standard non ICM units disconnect motor lead from blower relay BR Disconnect yellow lead from ter minal L2 of the contactor c On all units remove blower assembly from unit Re move screws securing blower to gas partition and slide assembly out Be careful not to tear insulation in blower compartment d Ensure proper reassembly by marking blower wheel and motor in relation t...

Page 46: ...n the gas partition VII BURNER IGNITION Unit is equipped with a direct spark ignition 100 lockout system Ignition module is located in the control box Module contains a self diagnostic LED During servicing refer to la bel diagram for LED interpretation If lockout occurs unit may be reset by either momentarily interrupting power supply to unit or turning selector switch to OFF position at the therm...

Page 47: ... annu ally Be sure to turn off the gas supply and then the electrical power to the unit Remove the control blower and compressor compartment ac cess panels to locate all the electrical controls and wiring Check all electrical connections for tightness Tighten all screw con nections If any smoky or burned connections are noticed dis assemble the connection clean all the parts restrip the wire end a...

Page 48: ...ine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Defective thermostat Replace thermostat Faulty condenser fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too...

Page 49: ...transformers have internal overcurrent protection that requires a cool down period to reset Miswired or loose connections Check all wiring and wirenut connections Burned out heat anticipator in thermostat Replace thermostat Broken thermostat wire Run continuity check Replace wire if necessary Misaligned spark electrodes Check flame ignition and sense electrode positioning Adjust as necessary No ga...

Page 50: ...flashes Rollout switch has opened Rollout switch will automatically reset but IGC will continue to lockout unit Check gas valve operation Ensure that induced draft blower wheel is properly secured to motor shaft Reset unit at unit disconnect Internal control fault LED 8 flashes Microprocessor has sensed an error in the software or hardware If error code is not cleared by resetting unit power repla...

Page 51: ......

Page 52: ...FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS III START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L3 L1 COMPRESSOR AMPS L1 L2 L3 COMPRESSOR AMPS L1 L2 L3 INDOOR EVAPORATOR FAN AMPS TEMPERATURES OUTDOOR CONDENSER AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR GAS HEAT SUPPLY AIR PRESSURES GAS INLET PRESSURE IN WG GAS MANIFOLD PRESSURE IN WG REFRIG...

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