Bryant 551B installation instructions EconoMi$er IV Control Modes, EconoMi$er IV Sensor Usage

Page 16

(cfm)

2500

 

 

 

 

MINUTE

2000

 

 

 

 

PER

1500

 

 

 

 

FEET

 

 

 

 

1000

 

 

 

 

CUBICIN

 

 

 

 

500

 

 

 

 

 

 

 

 

 

FLOW

0

 

 

 

 

 

0.05

0.15

0.25

 

STATIC PRESSURE (in. wg)

Fig. 26 — Barometric Relief Flow Capacity

(cfm)

30

 

 

 

 

 

 

 

 

MINUTE

 

 

 

 

 

 

 

 

25

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

PER

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

FEET

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

IN CUBIC

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

FLOW

0.13

0.20

0.22

0.25

0.30

0.35

0.40

0.45

0.50

 

 

STATIC PRESSURE (in. wg)

 

 

 

 

 

 

 

 

 

 

 

Fig. 27 — Outdoor Air Damper Leakage

(cfm)

6000

 

 

 

 

 

 

MINUTE

5000

 

 

 

 

 

 

4000

 

 

 

 

 

 

PER

 

 

 

 

 

 

3000

 

 

 

 

 

 

FEET

 

 

 

 

 

 

2000

 

 

 

 

 

 

CUBIC

 

 

 

 

 

 

1000

 

 

 

 

 

 

IN

 

 

 

 

 

 

 

FLOW

0

 

 

 

 

 

 

0.05

0.10

0.15

0.20

0.25

0.30

0.35

 

 

 

 

 

 

 

STATIC PRESSURE (in. wg)

Fig. 28 — Return Air Pressure Drop

SUPPLY AIR

TEMPERATURE

SENSOR

MOUNTING

LOCATION

SUPPLY AIR

TEMPERATURE

SENSOR

Fig. 29 — Supply Air Sensor Location

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

86

2,416

104

1,597

122

1,080

140

746

158

525

176

376

185

321

194

274

212

203

230

153

248

116

257

102

266

89

284

70

302

55

The temperature sensor looks like an eyelet terminal with wires running to it. The sensor is located in the “crimp end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The Economi$er IV is equipped with an ambient tempera- ture lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42 F ambient tem- perature. See Fig. 19.

G. EconoMi$er IV Control Modes

Determine the EconoMi$er IV control mode before set up of the control. Some modes of operation may require different sensors. Refer to Table 6. The EconoMi$er IV is supplied from the fac- tory with a supply air temperature sensor and an outdoor air temperature sensor. This allows for operation of the EconoMi$er IV with outdoor air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi$er IV and unit.

Table 6 — EconoMi$er IV Sensor Usage

 

ECONOMI$ER IV WITH OUTDOOR AIR

APPLICATION

 

DRY BULB SENSOR

 

 

Accessories Required

Outdoor Air Dry Bulb

None. The outdoor air dry bulb sensor

 

is factory installed.

 

 

Differential Dry Bulb

 

CRTEMPSN002A00*

Single Enthalpy

 

 

HH57AC078

Differential Enthalpy

 

 

HH57AC078

 

 

 

 

and

 

 

CRENTDIF004A00*

CO2 for DCV Control

 

33ZCSENCO2

using a Wall-Mounted

 

CO2 Sensor

 

 

 

 

 

 

CO2 for DCV Control

33ZCSENCO2†

 

OR

 

 

using a Duct-Mounted

and

 

 

 

CRCBDIOX005A00††

CO2 Sensor

33ZCASPCO2**

 

 

 

 

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be needed for installation.

†33ZCSENCO2 is an accessory CO2 sensor.

**33ZCASPCO2 is an accessory aspirator box required for duct-mounted applications.

††CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories.

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Contents Contents Safety ConsiderationsInstallation Provide Unit SupportIV. RIG and Place Unit III. Install Condensate Drain Line and External TrapPositioning Roof Curb Details Weight OperatingBase Unit Dimensions Physical Data Unit 551BField Power Supply Make Electrical ConnectionsIFC NECElectrical Data FLA MCA Mocp LRA HacrVoltage Comp no Electric Heater Electric Heater Usage †Used to determine minimum disconnect per NECField Control Wiring Heat Anticipator SettingsVI. Adjust FACTORY-INSTALLED Options A. Disconnect Switch Perfect Humidity Dehumidification SystemAccessory Field-Installed Humidistat Manual Outdoor-Air Damper Convenience OutletOptional EconoMi$er EconoMi$er IV Standard Sensors Hood Box RemovalOutdoor-Air Hood Construction EconoMi$er IV Control Modes EconoMi$er IV Sensor UsageEconoMi$er IV Controller Potentiometer LED Locations Enthalpy Changeover Set Points Page CO2 Sensor Standard Settings PpmVII. Adjust EVAPORATOR-FAN Speed Unit Heater Required ConfigMinimum Required Airflow Exceptions UrationFan Rpm at Motor Pulley Setting* High-Static Motor/Drive Fan Rpm at Motor Pulley Setting* Standard Motor/DriveEvaporator-Fan Motor Data Standard Motor Accessory/FIOP EconoMi$er IV Static Pressure* in. wg Accessory/FIOP Electric Heaters Static Pressure in. wgEvaporator-Fan Motor Data High-Static Motors General FAN Performance NotesAirflow 832 690 1051 750 1285 866 697 1088 756 1324901 703 1125 762 1365 974 716 1204 774 1449489 386 506 629 625 688 745866 502 4241567 16561748 1844748 684 891 738 1034 789 1177 805 695 953 749 1100 799 1249865 707 760 1170 809 1323865 707 1018 760 1170 809 1323 929 718 1086 771 1244 820 14011665 1873654 1040 713 668 1116 726683 1197 739 697 1281 753465 402 596 629 802 694 10211252 471 421823 674 1059 737 1306 882 684 1125 746 1378944 695 1194 756 1453 1009 705 1266 766 1533462 348 467 614 594 681 728868 474 3812716 28212293 996 2501 1038 2713 2930710 1482 1677 808 1876 855 2081723 1577 1775 820 19781492 784 1683 1582 796 17771677 808 1876 1877614 929 673 781 1445628 997 685 791 1525Internal Wiring VI. Refrigerant Service PortsPRE-START-UP START-UP Unit PreparationHeating if Accessory Heater is Installed XI. Safety ReliefIX. Cooling XII. Ventilation Continuous FANPerfect Humidity System Normal Design Cooling Operation Units With Power Exhaust Service CleaningEvaporator Coil Condenser CoilsIII. CONDENSER-FAN Adjustment FIG IV. BELT/PULLEY AdjustmentECONOMI$ER IV Adjustment II. LubricationCooling Charging Charts, Standard 551B090 Unit Cooling Charging Charts, Standard 551B120 Unit VII. Replacement Parts Cooling Troubleshooting Troubleshooting Unit TroubleshootingProblem Cause Remedy Subcooling Mode Liquid Reheat Reheat Mode Will Not EnergizeWill Not Energize Low System CapacityII. ECONOMI$ER IV Troubleshooting EconoMi$er IV Troubleshooting Completion EconoMi$er IV Input/Output LogicInputs Outputs Demand Control EnthalpyOperating sequence Cooling EconoMi$er Heating IndexPage START-UP Checklist TemperaturesPreliminary Information III. START-UP Electrical
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551B specifications

The Bryant 551B and 551C are two highly efficient air conditioning units designed to provide optimal comfort in residential settings. Known for their reliability and performance, these models are part of Bryant's esteemed line of heating and cooling solutions.

One of the standout features of the Bryant 551B is its two-stage cooling system, which allows for better humidity control and increased comfort. This ensures that homeowners can enjoy consistent temperatures while reducing energy consumption. The unit operates quietly, thanks to its noise-reducing technology, making it an ideal choice for bedrooms and living spaces.

On the other hand, the Bryant 551C builds upon this foundation with its variable-speed compressor. This technology allows the unit to adjust its cooling output according to the specific needs of the home. This results in seamless operation and even greater energy efficiency. Both models also incorporate Bryant's advanced control capabilities, which allow users to monitor and adjust settings remotely via smart devices, adding a layer of convenience and modernity to home climate control.

With an emphasis on durability, both the 551B and 551C feature a galvanized steel cabinet that protects against weather-related damage. The powder coat finish further enhances their resistance to rust and corrosion, ensuring a long lifespan and minimal maintenance.

Another significant characteristic of these units is their excellent Seasonal Energy Efficiency Ratio (SEER) ratings. The 551B boasts a SEER rating of up to 16, while the 551C takes it even further with ratings exceeding 20. This efficiency not only translates to lower energy bills for homeowners but also contributes to a reduced carbon footprint, making these units environmentally friendly options.

Both models are also designed to operate with eco-friendly refrigerants, aligning with modern energy standards and regulations aimed at reducing greenhouse gas emissions.

In summary, the Bryant 551B and 551C are exemplary choices for homeowners looking for reliable, efficient, and high-performing air conditioning solutions. With features such as two-stage and variable-speed compressors, advanced smart technology, and robust construction, these models stand out in the competitive HVAC market. They promise a comfortable indoor environment along with significant energy savings, making them a wise investment for the future.
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