Bryant 551A operation manual Llsv, Lps

Page 17

Fig. 28 — Typical Perfect Humidity Dehumidification

Package Control Box

 

MOTORMASTER

 

SENSOR

 

 

NOTES:

LOCATION

 

 

 

 

 

 

1. All sensors are located on

the eighth hairpin up from

the bottom.

 

 

 

2. Field-installed tubing insu-

lation is required to be

installed over the TXV bulb

and capillary tube

for

proper

operation

at

low

ambients.

Tubing

insula-

tion is only required on the

portion

of

suction

line

located

between

indoor

and outdoor section.

HAIRPIN END

Fig. 26 — Motormaster® I and Motormaster III

Sensor Locations

 

LEGEND

CB

Circuit Breaker

LLSV

Liquid Line Solenoid Valve

LPS

Low-Pressure Switch

TB

Terminal Block

TRAN — Transformer

Fig. 27 — Typical Perfect Humidify™ Dehumidification Package

Humidistat Wiring Schematic (460V Unit Shown)

17

Image 17
Contents Safety Considerations ContentsInstallation Provide Unit Support II. RIG and Place UnitRoof Curb Details Ft-in 155 Unit Maximum Dimensions Shipping Weight180 240551A Unit STD Unit ECONOMI$ER Corner DIM a DIM B DIM C WeightFt-in 155 1575 714 36.3 407 185 375 170 383 174 410 1039 1054 559 180 1650 748 36.3 375 170 449 204 452Base Unit Dimensions, 551A240 155 180 240 Physical DataIV. Make Unit Duct Connections III. Field Fabricate DuctworkTrap Condensate Drain 551A180 and 240 Shown 551A155 ShownNEC Field Control WiringUnit Voltage FLA LRA MCA MOCP† Electrical DataUnit Electric Resistance Heater DataHeater Maximum Minimum Heater Amps PEROptional Non-Fused Disconnect VII. Make OUTDOOR-AIR Inlet AdjustmentsOptional Convenience Outlet Manual Outdoor-Air DamperVIII. Install OUTDOOR-AIR Hood Heat Anticipator SettingsOutdoor Air Enthalpy Sensor Installation Unit StageDischarge Air Thermistor DAT CO2 Control SetupEconoMi$er Switchover Control Strategy Dry Bulb Changeover Set UpDefault Potentiometer Settings Mechanical Cooling LockoutMotormaster I Control Installation 551A155 and 180 Only Ventilation Air Minimum Position Set UpIX. Install ALL Accessories Wind Baffle Details Motormaster III Control Installation 551A240 OnlyLPS LlsvInternal Wiring III. Refrigerant Service PortsXI. Accessory ECONOMI$ER Adjustment START-UPUnits With Perfect Humidity Dehumidification Package Freeze Protection ThermostatsFan Performance 551A155 With Standard Indoor Fan Motor Watts Bhp Rpm 3750 Cfm Rpm Watts BhpWatts Bhp 4800 551A180 15 Tons5100 5700Watts Bhp Rpm 551A240 20 TonsBhp Rpm Watts 000 500Drop Accessory/FIOP Static Pressure in. wgEvaporator Fan Motor Specifications Fan RPM at Motor Pulley SettingsII. Lubrication Service CleaningIV. Evaporator FAN Service and Replacement Belt Tension Adjustment Evaporator-Fan Pulley Alignment AdjustmentVII. ECONOMI$ER Adjustment VI. CONDENSER-FAN AdjustmentIX. Refrigerant Charge VIII. Power FailureFilter Drier XI. Protective DevicesXVI. Optional Hinged Access Doors XIV. Replacement PartsXII. Relief Devices XIII. Control CircuitTypical Wiring Schematic 551A180, 460v Shown Typical Component Arrangement 551A180 Shown Problem Cause Remedy TroubleshootingCooling Service Analysis Problem Potential Cause Remedy EconoMi$er TroubleshootingPage General TemperaturesElectrical
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