Laserfiche WebLink
ACCESSORY USAGE GUIDELINE <br /> REQUIRED FOR LOW-AMBI- REQUIRED FOR LONG REQUIRED FOR <br /> ACCESSORY ENT COOLING APPLICATIONS LINE SEA COAST <br /> (Below 550F/1 2.80C) APPLICATIONS* APPLICATIONS <br /> (Over 80 ft./24.38 m) (Within 2 miles/3.22 km) <br /> Ball Bearing Fan Motor Yest No No <br /> Compressor Start Assist Capacitor and Relay Yes Yes No <br /> Crankcase Heater Yes Yes No <br /> Evaporator Freeze Thermostat Yes No No <br /> Hard Shut-Off TXV Yes Yes Yes <br /> Liquid Line Solenoid Valve No No No <br /> Motor MasterO Control or Yes No No <br /> Low-ambient Pressure Switch <br /> Support Feet I Recommended No Recommended <br /> Winter Start Control I Yes No No <br /> *For tubing line sets between 80 and 200 ft.(24.38 and 60.96 m) and/or 20 ft.(6.09 m)vertical differential,refer to Residential Split—System Longline <br /> Application Guideline. <br /> t Required for Low—Ambient Controller(full modulation feature)MotorMaster©Control. <br /> Accessory Description and Usage (Listed Alphabetically) <br /> 1.Ball—Bearing Fan Motor 5. Cycle Protector <br /> A fan motor with ball bearings which permits speed reduction The cycle protector is designed to prevent compressor short <br /> while maintaining bearing lubrication, cycling. This control provides an approximate 5—minute delay <br /> Usage Guideline: after power to the compressor has been interrupted for any <br /> Required on all units when MotorMasterO is used. reason,including power outage,protector control trip,thermostat <br /> 2.Compressor Start Assist—Capacitor and Relay jiggling,or normal cycling. <br /> 6.Evaporator Freeze Thermostat <br /> Start capacitor and relay gives a "hard" boost to compressor An SPST temperature—actuated switch that stops unit operation <br /> motor at each start up. <br /> Usage Guideline: when evaporator reaches freeze—up conditions. <br /> Required for reciprocating compressors in the Usage Guideline: <br /> following applications: Required when low ambient kit has been added. <br /> Long line 7.Low—Ambient Pressure Switch Kit <br /> Low ambient cooling A long life pressure switch which is mounted to outdoor unit <br /> service valve. It is designed to cycle the outdoor fan motor in <br /> Hard shut off expansion valve on indoor coil order to maintain head pressure within normal operating limits <br /> Liquid line solenoid on indoor coil (approximately 100 prig to 225 psig).The control will maintain <br /> Required for single—phase scroll compressors in the working head pressure at low—ambient temperatures down to 0°F <br /> following applications: (-18°C)when properly installed. <br /> Long line Usage Guideline: <br /> Low ambient cooling A Low—Ambient Pressure Switch or MotorMasterO <br /> Suggested for all compressors in areas with a history of Low—Ambient Controller must be used when cooling operation is <br /> low voltage problems. used at outdoor temperatures below 55°F(12.8°C). <br /> 3.Compressor Start Assist—PTC Type 8.MotorMaster®Low—Ambient Controller <br /> Solid state electrical device which gives a "soft" boost to the A fan—speed control device activated by a temperature sensor, <br /> compressor at each start—up. designed to control condenser fan motor speed in response to the <br /> Usage Guideline: saturated, condensing temperature during operation in cooling <br /> mode only.For outdoor temperatures down to—20'F(-28.9'C), <br /> Suggested in installations with marginal power supply. it maintains condensing temperature at 100°F±10°F(37.8°C± <br /> 4.Crankcase Heater 5.5°C). <br /> An electric resistance heater which mounts to the base of the Usage Guideline: <br /> compressor to keep the lubricant warm during off cycles. A MotorMasterO Low Ambient Controller or <br /> Improves compressor lubrication on restart and minimizes the Low—Ambient Pressure Switch must be used when <br /> chance of liquid slugging. cooling operation is used at outdoor temperatures <br /> Usage Guideline: below 55°F(12.8°C). <br /> Required in low ambient cooling applications. Suggested for all commercial applications. <br /> Required in long line applications. 9.Outdoor Air Temperature Sensor <br /> Suggested in all commercial applications. Designed for use with Bryant Thermostats listed in this <br /> publication. This device enables the thermostat to display the <br /> outdoor temperature.This device also <br /> is required to enable special thermostat features such as auxiliary <br /> heat lock out. <br /> Usage Guideline: <br /> Suggested for all Bryant thermostats listed in this <br /> publication. <br /> 6 <br />