Bryant 551B Installation Instructions Manual Download Page 54 | Manualshive

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54

C06144

Fig. 54

---

Cooling Charging Chart, 551B 048 with

Optional Perfect Humidity Adaptive

Dehumidification System

NOTE

: When using the charging charts, it is important that only

the subcooling/reheat dehumidification coil liquid line solenoid
valve be energized. The subcooling/reheat dehumidification coil
liquid line solenoid valve MUST be energized to use the charging
charts and the outdoor motor speed controller jumpered to run the
fan at full speed.
The charts reference a liquid pressure (psig) and temperature at a

point between the condenser coil and the subcooling/reheat
dehumidification coil. A tap is provided on the unit to measure

liquid pressure entering the subcooling/reheat dehumidification

coil.

IMPORTANT

: The subcooling mode charging charts (Fig.

53--56) are to be used ONLY with units having the Perfect
Humidity adaptive dehumidification system. DO NOT use
standard charge (Fig. 49--51 and 57--60) for units with Perfect
Humidity system, and DO NOT use Fig. 53--56 for standard
units.

C06145

Fig. 55

---

Cooling Charging Chart, 551B 048 with

Optional Perfect Humidity Adaptive

Dehumidification System

C06146

Fig. 56

---

Cooling Charging Chart, 551B 072 with

Optional Perfect Humidity Adaptive

Dehumidification System

To Use Cooling Charging Chart, Standard Unit

Take the outdoor ambient temperature and read the suction

pressure gauge. Refer to charts to determine what suction
temperature should be. If suction temperature is high, add

refrigerant. If suction temperature is low, carefully recover some
of the charge. Recheck the suction pressure as charge is adjusted.
Example (Fig. 49):
Outdoor Temperature

75

°

F

. . . . . . . . . . . . . . . . . . . . . . . . .

Suction Pressure

70 psig

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Temperature should be

48

°

F

. . . . . . . . . . . . . . . . . .

(Suction temperature may vary

±

5

°

F.)

If a charging device is used, temperature and pressure readings
must be accomplished using the charging charts.

To Use Cooling Charging Charts, Units With
Perfect Humidity

™

Adaptive Dehumidification System

Refer to charts (Fig. 53--56) to determine the proper leaving
condenser pressure and temperature.
Example (Fig. 53):
Leaving Condenser Pressure

250 psig

. . . . . . . . . . . . . . . . .

Leaving Condenser Temperature

105

_

F

. . . . . . . . . . . . . . .

NOTE

: When using the charging charts, it is important that only

the subcooling/reheat dehumidification coil liquid line solenoid
valve be energized. The subcooling/reheat dehumidification coil
liquid line solenoid valve MUST be energized to use the charging
charts and the outdoor motor speed controller jumpered to run the
fan at full speed.

IMPORTANT

: Refer to Troubleshooting Tables for additional

information.

Step 6

—

Replacement Parts

A complete list of replacement parts may be obtained from any

Bryant distributor upon request.

551B

,C

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Summary of Contents for 551B

Page 1: ...ment observe precautions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguishers available for all brazing operations Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instr...

Page 2: ...ble codes Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes A minimum clearance is not required around ductwork Cabinet return air static pressure a negative condition shall not exceed 0 35 in wg with economizer or 0 45 i...

Page 3: ...de 7 Direction of airflow 8 Connector packages CRBTMPWR001A01 and 002A01 are for thru the curb type gas Packages CRBTMPWR003A01 and 004A01 are for thru the bottom type gas connections CONNECTOR PKG ACCY B C D ALT DRAIN HOLE GAS POWER CONTROL ACCESSORY POWER CRBTMPWR001A01 1 911 16 551 1 4 406 13 4 44 5 3 4 19 NPT 3 4 19 NPT 1 2 12 7 1 2 12 7 CRBTMPWR002A01 11 4 31 7 CRBTMPWR003A01 1 2 12 7 NPT 3 4...

Page 4: ...base rail inside the front and rear 0 0 in clearance between the roof curb and the base rail inside on the duct end of the unit This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately equal to Fig 2 section C C Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of c...

Page 5: ...stem C06111 Fig 6 Rigging Details UNIT OPERATING DIMENSIONS UNIT 551C OPERATING WEIGHT A B C 551C lb kg in mm in mm in mm 024 435 197 73 69 1872 35 50 902 33 31 847 036 445 202 73 69 1872 35 50 902 33 31 847 048 465 211 73 69 1872 35 50 902 33 31 847 060 520 236 73 69 1872 35 50 902 41 31 1050 UNIT OPERATING DIMENSIONS UNIT 551B OPERATING WEIGHT A B C 551B lb kg in mm in mm in mm 036 530 240 73 69...

Page 6: ...6 CONTROL BOX PANEL CONTROL BOX PANEL COMPRESSOR COMPRESSOR ACCESS ACCESS PANEL PANEL C06375 Fig 8 551B 036 072 Base Unit Dimensions 551B C ...

Page 7: ...7 CONTROL BOX PANEL COMPRESSOR ACCESS PANEL C06376 Fig 9 551C 024 060 Base Unit Dimensions 551B C ...

Page 8: ...ive phase imbalance constitutes abuse and may cause damage to electrical components Such operation invalidates any applicable Bryant warranty NOTE If accessory thru the bottom connections and roof curb are used refer to the Thru the Bottom Accessory Installation Instructions for information on wiring the unit Field Control Wiring Install a Bryant approved accessory thermostat assembly according to...

Page 9: ...56 Hi Static 56 56 56 56 Fan Rpm Range Std 680 1044 770 1185 1035 1460 1035 1460 1120 1585 Hi Static 1075 1455 1075 1455 1300 1685 1300 1685 Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter A B in Std 1 9 2 9 1 9 2 9 2 4 3 4 2 4 3 4 Motor Pulley Pitch Diameter A B in Hi Static 2 8 3 8 2 8 3 8 3 4 4 4 3 4 3 4 Nominal Motor Shaft Diameter in Std ...

Page 10: ... 1000 680 1044 770 1185 1035 1460 Hi Static 1075 1455 1075 1455 1300 1685 Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm 1620 2100 2100 2100 Motor Pulley Pitch Diameter A B in Std 2 4 3 2 1 9 2 9 1 9 2 0 2 4 3 4 Motor Pulley Pitch Diameter A B in Hi Static 2 8 3 8 2 8 3 8 3 4 4 4 Nominal Motor Shaft Diameter in Std 5 8 1 2 1 2 5 8 Hi Static 7 8 5 8 5 8 5 8 Fan Pulley Pitch Diameter in Std ...

Page 11: ...lock 208 230 1 60 575 3 60 SIZES 060 AND 072 208 230 3 60 SIZES 036 AND 048 208 230 3 60 460 3 60 SIZES 060 AND 072 575 3 60 SIZES 036 AND 048 460 3 60 SIZES 036 AND 048 C06158 Fig 11 Power Wiring Connections LOW VOLTAGE CONNECTIONS INTEGRATED GAS UNIT CONTROLLER IGC C06125 Fig 12 Field Control Wiring Raceway 551B C ...

Page 12: ... 5 19 4 25 25 18 18 90 90 NO 187 254 1 10 3 77 0 1 0 7 4 9 002A00 4 9 5 8 13 6 15 6 23 1 25 7 25 30 21 24 90 90 NO 187 254 1 10 3 77 0 1 0 7 4 9 003B00 6 5 8 0 18 1 20 9 28 8 32 3 30 35 26 30 90 90 004B00 7 9 9 6 21 9 25 3 33 5 37 7 35 40 31 35 90 90 STD 005A00 12 14 7 33 4 38 5 47 8 54 2 50 60 44 50 90 90 STD NONE 24 5 24 5 30 30 24 24 95 95 001A00 3 3 4 0 9 2 10 6 24 5 24 5 30 30 24 24 95 95 YES...

Page 13: ...HS 009A00 12 9 16 8 24 3 25 0 22 0 60 0 460 3 60 HS NONE 12 1 15 0 12 0 62 0 006A00 5 5 7 2 15 6 20 0 14 0 63 0 036 YES 414 508 1 5 1 39 0 1 0 4 2 6 007A00 8 1 10 6 19 9 20 0 18 0 63 0 036 3 tons YES 414 508 1 5 1 39 0 1 0 4 2 6 008A00 10 6 13 8 23 9 25 0 21 0 63 0 3 tons 009A00 12 9 16 8 27 7 30 0 25 0 63 0 STD NO 518 632 1 4 2 31 0 1 0 4 1 9 NONE 7 6 10 7 35 STD YES 518 632 1 4 2 31 0 1 0 4 1 9 ...

Page 14: ... 25 140 140 002A00 4 9 5 8 13 6 15 6 24 9 26 8 30 30 25 25 140 140 NO 187 254 1 14 1 95 0 1 1 5 5 8 003B00 6 5 8 0 18 1 20 9 29 9 33 4 35 35 28 31 140 140 NO 187 254 1 14 1 95 0 1 1 5 5 8 005A00 12 14 7 33 4 38 5 48 9 55 4 50 60 45 51 140 140 HS 004 004 16 19 3 43 8 50 5 62 0 70 4 70 80 57 65 140 140 HS NONE 30 9 30 9 35 35 30 30 145 145 048 002A00 4 9 5 8 13 6 15 6 30 9 31 8 35 35 30 30 145 145 0...

Page 15: ...8 5 48 9 55 4 50 60 45 51 168 168 NO 187 254 1 17 3 123 0 1 1 5 5 8 004 004 15 8 19 3 43 8 50 5 62 0 70 4 70 80 57 65 168 168 060 004 005 19 9 24 3 55 2 63 8 76 3 86 9 80 90 70 80 168 168 060 tons STD NONE 34 9 34 9 40 40 34 34 173 173 tons STD 002A00 4 9 5 8 13 6 15 6 34 9 34 9 40 40 34 34 173 173 YES 187 254 1 17 3 123 0 1 1 5 5 8 004B00 7 9 9 6 21 9 25 3 39 6 43 8 40 45 37 41 173 173 YES 187 25...

Page 16: ... 36 0 102 0 HS 008 009 23 4 30 1 41 8 45 38 102 HS NONE 17 4 20 0 17 0 104 0 006A00 5 5 7 2 17 4 20 0 17 0 104 0 YES 414 508 1 8 4 70 0 1 0 8 3 4 008A00 10 6 13 8 24 9 25 0 22 0 104 0 YES 414 508 1 8 4 70 0 1 0 8 3 4 009A00 12 9 16 8 28 7 30 0 26 0 104 0 008 008 21 1 27 7 42 2 45 0 38 0 104 0 008 009 23 4 30 1 45 2 50 41 104 STD NO 518 632 1 7 1 53 0 1 0 6 2 0 NONE 11 5 15 11 65 STD YES 518 632 1 ...

Page 17: ...6 23 1 25 7 25 30 21 24 90 90 NO 187 254 1 10 3 77 1 0 7 4 9 003 6 5 8 0 18 1 20 9 28 8 32 3 30 35 26 30 90 90 004 7 9 9 6 21 9 25 3 33 5 37 7 35 40 31 35 90 90 036 STD 002 002 9 8 14 7 33 4 38 5 47 8 54 2 50 60 44 50 90 90 036 3 tons STD 24 5 24 5 30 30 24 24 95 95 3 tons 001 3 3 4 0 9 2 10 6 24 5 24 5 30 30 24 24 95 95 YES 187 254 1 10 3 77 1 0 7 4 9 002 4 9 5 8 13 6 15 6 28 1 30 7 30 35 27 29 9...

Page 18: ... 2 2 008 10 6 13 8 22 7 25 21 48 460 3 60 009 12 9 16 8 26 5 30 24 48 460 3 60 9 4 20 9 60 006 5 5 7 2 12 3 20 11 60 036 NO 414 508 1 5 1 39 1 0 4 2 6 007 8 1 10 6 16 5 20 15 60 036 3 tons NO 414 508 1 5 1 39 1 0 4 2 6 008 10 6 13 8 20 5 25 19 60 3 tons HS 009 12 9 16 8 24 3 25 22 60 HS 12 1 20 12 62 006 5 5 7 2 15 6 20 14 63 YES 414 508 1 5 1 39 1 0 4 2 6 007 8 1 10 6 19 2 20 18 63 YES 414 508 1 ...

Page 19: ...6 19 3 43 8 50 5 65 8 74 3 70 80 62 69 111 111 208 230 3 60 23 4 23 4 30 30 23 23 136 136 002 4 9 5 8 13 6 15 6 24 2 26 8 30 30 23 25 136 136 NO 187 254 1 13 5 93 1 0 7 5 8 003 6 5 8 18 1 20 9 29 9 33 4 35 35 28 31 136 136 NO 187 254 1 13 5 93 1 0 7 5 8 005 12 14 7 33 4 38 5 48 9 55 4 50 60 45 51 136 136 HS 004 004 16 19 3 43 8 50 5 62 0 70 4 70 80 57 65 136 136 HS 29 4 29 4 35 35 29 29 140 140 04...

Page 20: ...208 230 3 60 30 6 30 6 35 35 30 30 187 187 002 4 9 5 8 13 6 15 6 30 6 30 6 35 35 30 30 187 187 NO 187 254 1 17 3 123 1 1 5 7 5 004 7 9 9 6 21 9 25 3 36 7 40 9 40 45 34 38 187 187 NO 187 254 1 17 3 123 1 1 5 7 5 005 12 0 14 7 33 4 38 5 51 1 57 5 60 60 47 53 187 187 004 004 15 8 19 3 43 8 50 5 64 1 72 5 70 80 59 67 187 187 HS 004 005 19 9 24 3 55 2 63 8 78 4 89 1 80 90 72 82 187 187 HS 36 6 36 6 40 ...

Page 21: ... 39 224 224 002 4 9 5 8 13 6 15 6 40 5 40 5 45 45 39 39 224 224 YES 187 254 1 20 5 156 1 1 4 7 5 004 7 9 9 6 21 9 25 3 41 7 45 9 45 50 39 43 224 224 YES 187 254 1 20 5 156 1 1 4 7 5 005 12 0 14 7 33 4 38 5 56 1 62 5 60 70 53 58 224 224 004 004 15 8 19 3 43 8 50 5 69 1 77 5 70 80 65 72 224 224 004 005 19 9 24 3 55 2 63 8 83 4 94 1 90 100 78 87 224 224 15 2 20 15 97 006 5 5 7 2 15 2 20 15 97 072 NO ...

Page 22: ...ed between the DEHUM output and C common of the unit The relay controls the Perfect Humidity solenoid valve and must be wired between the Perfect Humidity fuse and the low pressure switch Refer to the installation instructions included with the Bryant Light Commercial Thermidistat device for more information Disconnect Switch The optional disconnect switch is non fused The switch has the capabilit...

Page 23: ...Unit Shown ROOF TOP UNIT R C Y1 Y2 G W1 W2 PINK PINK RED 24V FROM PERFECT HUMIDITY SYSTEM LLSV R1 TS TAT WIRES LCT R C Y1 Y2 G W1 W2 DEHUM OC R1 PERFECT HUMIDITY SYSTEM PINK LTLO CB 3 2 AMPS LEGEND CB Circuit Breaker LCT Light Commercial Thermidistat Device LLSV Liquid Line Solenoid Valve LTLO Low Temperature Lockout C06360 Fig 16 Typical Rooftop Unit with Perfect Humidity Adaptive Dehumidificatio...

Page 24: ...r exhaust hood assembly 3 The indoor coil access panel will be used as the top of the hood Remove the screws along the sides and bottom of the indoor coil access panel See Fig 24 4 Swing out indoor coil access panel and insert the hood sides under the panel hood top Use the screws provided to attach the hood sides to the hood top Use screws provided to attach the hood sides to the unit See Fig 25 ...

Page 25: ...sensor is a 3k ohm thermistor located at the inlet of the indoor fan See Fig 32 This sensor is factory installed The operating range of temperature measurement is 0 to 158_F See Table 5 for sensor temperature resistance values Table 5 Supply Air Sensor Temperature Resistance Values TEMPERATURE F RESISTANCE ohms 58 200 250 40 100 680 22 53 010 4 29 091 14 16 590 32 9 795 50 5 970 68 3 747 77 3 000 ...

Page 26: ...l adjust the outdoor air dampers to minimum position If the outdoor air temperature is below the set point the position of the outdoor air dampers will be controlled to provide free cooling using outdoor air When in this mode the LED next to the free cooling set point potentiometer will be on The changeover temperature set point is controlled by the free cooling set point potentiometer located on ...

Page 27: ...air and one in the return air duct The EconoMi er IV controller compares the outdoor air enthalpy to the return air enthalpy to determine EconoMi er IV use The controller selects the lower enthalpy air return or outdoor for cooling For example when the outdoor air has a lower enthalpy than the return air the EconoMi er IV opens to bring in outdoor air for free cooling 0 500 1000 1500 2000 2500 0 0...

Page 28: ... demand ventilation control is not being used the minimum position potentiometer should be used to set the occupied ventilation position The maximum demand ventilation position should be turned fully clockwise Adjust the minimum position potentiometer to allow the minimum amount of outdoor air as required by local codes to enter the building Make minimum position adjustments with at least 10_F tem...

Page 29: ...ATURE degrees F degrees C C06037 Fig 36 Enthalpy Changeover Set Points Occupancy Control The factory default configuration for the EconoMi er IV control is occupied mode Occupied mode is provided by the black jumper from terminal TR to terminal N When unoccupied mode is desired install a field supplied timeclock function in place of the jumper between TR and N See Fig 27 When the timeclock contact...

Page 30: ...ermine that the range configuration for the CO2 sensor should be 1800 ppm The EconoMi er IV controller will output the 6 7 volts from the CO2 sensor to the actuator when the CO2 concentration in the space is at 1100 ppm The DCV set point may be left at 2 volts since the CO2 sensor voltage will be ignored by the EconoMi er IV controller until it rises above the 3 6 volt setting of the minimum posit...

Page 31: ...le flange toward fixed flange to increase speed and away from fixed flange to decrease speed Increasing fan speed increases load on motor Do not exceed maximum speed specified in Table 1 5 Set movable flange at nearest keyway of pulley hub and tighten setscrew See Table 1 for speed change for each full turn of pulley flange 6 Adjust belt tension and align fan and motor pulleys per guidance below N...

Page 32: ...862 826 789 753 716 680 048 1185 1144 1102 1061 1019 978 936 895 853 812 770 060 1460 1425 1389 1354 1318 1283 1248 1212 1177 1141 1106 1070 1035 072 1585 1538 1492 1445 1399 1352 1305 1259 1212 1166 1119 Approximate fan rpm shown standard motor drive Table 9 551B 551C Fan Rpm at Motor Pulley Setting With High Static Motor UNIT MOTOR PULLEY TURNS OPEN UNIT 0 1 2 1 11 2 2 21 2 3 31 2 4 41 2 5 51 2 ...

Page 33: ...120 575 3 0 208 230 8 6 060 Three 2 90 2615 460 3 9 060 Three 2 90 2615 575 3 9 208 230 8 6 072 Three 2 90 2615 460 3 9 072 Three 2 90 2615 575 3 9 LEGEND Bhp Brake Horsepower Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence Using the fan motors up to the ratings shown in this table will not result ...

Page 34: ...r failure Unit warranty will not be affected See Table 10 and 11 on this page for additional information 3 Use of a field supplied motor may affect wire sizing Contact your Bryant representative to verify 4 Interpolation is permissible Do not extrapolate 5 Performance includes clean filter and wet coil Table 14 Fan Performance 551C 024 Vertical Discharge Units Standard Motor Belt Drive AIRFLOW EXT...

Page 35: ...Table 16 Fan Performance 551B 036 551C 036 Vertical Discharge Units High Static Motor Belt Drive AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 0 2 0 4 0 6 0 8 1 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 900 566 0 14 142 690 0 23 228 791 0 32 320 879 0 42 418 957 0 52 522 1000 598 0 17 173 718 0 27 267 817 0 37 366 903 0 47 471 981 0 58 581 1100 632 0 21 210 7...

Page 36: ...Bhp Watts Rpm Bhp Watts 1200 666 0 25 252 778 0 36 361 873 0 48 476 956 0 60 594 1031 0 72 718 1300 701 0 30 300 809 0 42 418 902 0 54 540 983 0 67 665 1057 0 80 796 1400 737 0 36 355 842 0 48 481 932 0 61 610 1012 0 75 744 1085 0 89 881 1500 774 0 42 417 875 0 55 551 962 0 69 689 1041 0 83 830 1112 0 98 974 1600 811 0 49 487 909 0 63 629 994 0 78 774 1071 0 93 923 1141 1 08 1076 1700 849 0 57 565...

Page 37: ...1238 1 29 1148 1900 944 0 71 633 1037 0 87 774 1120 1 04 925 1197 1 22 1084 2000 983 0 81 723 1073 0 98 870 1154 1 16 1026 2100 1023 0 92 821 1110 1 10 975 1189 1 28 1137 2200 1063 1 05 929 1147 1 23 1089 2300 1104 1 18 1046 2400 2500 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1224 1 18 1045 ...

Page 38: ...5 1 32 1174 1223 1 52 1346 1296 1 72 1526 1364 1 93 1712 1428 2 15 1905 2500 1185 1 48 1311 1262 1 68 1490 1333 1 89 1676 1399 2 10 1868 1462 2 33 2067 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1224 1 18 1045 1291 1 36 1212 1354 1 56 1387 1414 1 77 1570 1472 1 98 1761 1600 1250 1 27 1128 131...

Page 39: ...1490 1333 1 89 1676 1399 2 10 1868 1462 2 33 2067 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1224 1 18 1045 1291 1 36 1212 1354 1 56 1387 1414 1 77 1570 1472 1 98 1761 1600 1250 1 27 1128 1316 1 46 1299 1379 1 66 1478 1438 1 87 1664 1495 2 09 1858 1700 1278 1 37 1219 1343 1 57 1394 1405 1 77 ...

Page 40: ...47 1303 1265 1 70 1510 1339 1 93 1717 1406 2 17 1926 2600 1224 1 63 1448 1303 1 87 1663 1375 2 12 1878 1442 2 36 2095 2700 1264 1 81 1604 1342 2 06 1828 1412 2 31 2051 2800 1305 1 99 1772 1381 2 26 2003 2900 1346 2 20 1951 3000 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1800 1304 1 51 1337 1365 1 ...

Page 41: ...W CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1800 1304 1 51 1337 1365 1 69 1503 1422 1 88 1674 1477 2 08 1848 1528 2 28 2025 1900 1335 1 64 1454 1395 1 83 1627 1452 2 03 1804 1506 2 23 1984 1557 2 44 2168 2000 1366 1 78 1580 1426 1 98 1760 1482 2 19 1943 1535 2 40 2130 1586 2 61 2319 2100 1398 1 93 1715 1457 2 14 1901 1512 2 35 2091 1565 2 57 ...

Page 42: ... Fan Performance 551B 036 551C 036 Horizontal Discharge Units High Static Motor Belt Drive AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 0 2 0 4 0 6 0 8 1 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 900 554 0 14 134 681 0 22 222 783 0 32 316 870 0 42 416 947 0 53 523 1000 583 0 16 163 707 0 26 257 808 0 36 358 894 0 47 465 971 0 58 578 1100 612 0 20 195 735 0 3...

Page 43: ... Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1200 643 0 23 233 762 0 35 344 860 0 46 459 944 0 58 579 1020 0 71 705 1300 674 0 28 276 791 0 40 395 887 0 52 517 970 0 65 645 1045 0 78 777 1400 706 0 33 324 820 0 45 451 914 0 59 582 997 0 72 717 1071 0 86 857 1500 738 0 38 379 849 0 52 515 942 0 66 653 1024 0 80 796 1097 0 95 942 1600 771 0 44 440 879 0 59 584 971 0 74 731 1051 0 89 881 1124 1 0...

Page 44: ...936 1201 1 23 1096 2000 892 0 67 599 986 0 82 729 1072 0 98 870 1151 1 15 1022 2100 927 0 77 680 1017 0 92 815 1101 1 08 960 1178 1 26 1116 2200 962 0 87 769 1050 1 02 909 1131 1 19 1059 2300 997 0 97 865 1082 1 14 1010 2400 1033 1 09 970 1115 1 26 1120 2500 1069 1 22 1084 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp W...

Page 45: ...332 1 83 1625 2500 1069 1 22 1084 1149 1 39 1239 1223 1 58 1403 1293 1 77 1576 1360 1 98 1757 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1188 1 09 970 1261 1 29 1143 1330 1 49 1327 1395 1 71 1523 1457 1 95 1729 1600 1208 1 16 1033 1279 1 36 1208 1347 1 57 1394 1412 1 79 1590 1474 2 02 1797 17...

Page 46: ...ate field supplied drive is required 2 Maximum continuous bhp is 2 90 3 See general fan performance notes LEGEND Bhp Brake Horsepower Watts Input Watts to Motor Motor drive range 1300 to 1685 rpm All other rpms require field supplied drive Table 32 Fan Performance 551C 072 Horizontal Discharge Units Standard Motor Belt Drive AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 0 2 0 4 0 6 0 8 1 0 CF...

Page 47: ...249 2900 1204 1 77 1572 1281 2 00 1779 1353 2 24 1989 1419 2 48 2202 1482 2 72 2419 3000 1240 1 94 1725 1315 2 18 1939 1385 2 43 2156 1451 2 68 2376 AIRFLOW EXTERNAL STATIC PRESSURE in wg AIRFLOW CFM 1 2 1 4 1 6 1 8 2 0 CFM Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1800 1244 1 33 1182 1308 1 51 1345 1369 1 70 1513 1427 1 90 1687 1483 2 10 1867 1900 1268 1 44 1275 1332 1...

Page 48: ...llowing conditions a Make sure that condenser fan blade are correctly positioned in fan orifice See Condenser Fan Adjustment section for more details b Make sure that air filter s is in place c Make sure that condensate drain trap is filled with water to ensure proper drainage d Make sure that all tools and miscellaneous loose parts have been removed START UP Unit Preparation Make sure that the un...

Page 49: ...peration on single stage units requires a 2 stage thermostat Y1 and Y2 For EconoMi er IV operation there must be a thermostat call for the fan G This will move the damper to its minimum position during the occupied mode If the increase in cooling capacity causes the supply air temperature to drop below 45_F then the outdoor air damper position will be fully closed If the supply air temperature con...

Page 50: ...n of hot gas refrigerant around the condenser coil See Fig 44 This hot gas will mix with liquid refrigerant leaving the condenser coil and flow to the subcooling reheat dehumidification coil Now the conditioned air coming off the evaporator will be cooled and dehumidified but will be warmed to neutral conditions 72_F to 75_F by the subcooling reheat dehumidification coil The net effect of the roof...

Page 51: ... to flush down between the 2 coil sections to remove dirt and debris Clean the outer surfaces with a stiff brush in the normal manner 6 Secure the sections together Reposition the outer coil section and remove the coil corner post from between the top panel and center post Install the coil corner and center posts Replace all screws Condensate Drain Check and clean each year at the start of the coo...

Page 52: ... 500 microns weigh in the specified amount of refrigerant Refer to Table 1 and unit information plate Low Charge Cooling Using Cooling Charging Charts Fig 49 52 vary refrigerant until the conditions of the charts are met Note the charging charts are different from type normally used Charts are based on charging the units to the correct superheat for the various operating conditions Accurate pressu...

Page 53: ...tandard 551B 048 C06141 Fig 51 Cooling Charging Chart Standard 551B 060 C06142 Fig 52 Cooling Charging Chart Standard 551B 072 C06143 Fig 53 Cooling Charging Chart 551B 036 with Optional Perfect Humidity Adaptive Dehumidification System 551B C ...

Page 54: ...System To Use Cooling Charging Chart Standard Unit Take the outdoor ambient temperature and read the suction pressure gauge Refer to charts to determine what suction temperature should be If suction temperature is high add refrigerant If suction temperature is low carefully recover some of the charge Recheck the suction pressure as charge is adjusted Example Fig 49 Outdoor Temperature 75 F Suction...

Page 55: ...Line Pressure kpa F C 125 52 115 46 105 41 95 35 85 29 75 24 C06148 Fig 57 Cooling Charging Chart Standard 551C 024 551C 3 TON CHARGING CHART 65 0 75 0 85 0 95 0 43 48 53 58 63 68 73 78 Suction Line Temp deg F Suction Line Pressure psig 448 2 498 2 548 2 598 2 648 2 6 1 11 1 16 1 21 1 Suction Line Temperature deg C Suction Line Pressure kpa F C 115 46 105 41 95 35 85 29 75 24 C06149 Fig 58 Cooling...

Page 56: ...15 46 105 41 95 35 85 29 75 24 C06150 Fig 59 Cooling Charging Chart Standard 551C 048 551C 5 TON CHARGING CHART 55 0 65 0 75 0 85 0 95 0 105 0 115 0 42 47 52 57 62 67 72 77 Suction Line Temp deg F Suction Line Pressure psig 310 0 410 0 510 0 610 0 710 0 810 0 0 0 5 0 10 0 15 0 20 0 25 0 Suction Line Temperature deg C Suction Line Pressure kpa F C 115 46 105 41 95 35 85 29 75 24 C06151 Fig 60 Cooli...

Page 57: ...r completing troubleshooting DCV Demand Controlled Ventilation and Power Exhaust To check DCV and Power Exhaust 1 Make sure EconoMi er IV preparation procedure has been performed 2 Ensure terminals AQ and AQ1 are open The LED for both DCV and Exhaust should be off The actuator should be fully closed 3 Connect a 9 v battery to AQ positive node and AQ1 negative node The LED for both DCV and Exhaust ...

Page 58: ...te system and recharge to nameplate Normally Satisfying Thermostat Defective compressor Replace and determine cause Insufficient line voltage Determine cause and correct Blocked condenser Determine 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...

Page 59: ...sted check and replace low pres sure switch if necessary Loss of Compressor Superheat Conditions with Subcooling Reheat Dehumidification Coil Energized Thermostatic expansion valve TXV 1 Check TXV bulb mounting and secure tightly to suc tion line 2 Replace TXV if stuck open or closed Excessive Superheat Liquid line solenoid valve will not operate Valve is stuck replace valve Excessive Superheat Ho...

Page 60: ...60 C06053 Fig 61 EconoMi er IV Functional View 551B C ...

Page 61: ... COMPRESSOR AMPS L1 L2 L3 INDOOR FAN AMPS L1 L2 L3 TEMPERATURES OUTDOOR AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB PRESSURES Cooling Mode REFRIGERANT SUCTION PSIG F REFRIGERANT DISCHARGE PSIG F j VERIFY THAT 3 PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION IF THEY ARE NOT ROTATING IN CORRECT DIRECTION LOCKING COLLAR MUST BE RE TIGHTENED AFTER CORRECTING ...

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