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116B
ACCESSORY USAGE GUIDELINE
| REQUIRED FOR | REQUIRED FOR LONG | REQUIRED FOR | |
| LINE | SEA COAST | ||
ACCESSORY | ENT COOLING APPLICATIONS | |||
APPLICATIONS* | APPLICATIONS | |||
| (Below 55°F/12.8_C) | |||
| (Over 80 ft./24.38 m) | (Within 2 miles/3.22 km) | ||
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Ball Bearing Fan Motor | Yes{ | No | No | |
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Compressor Start Assist Capacitor and Relay | Yes | Yes | No | |
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Crankcase Heater | Yes | Yes | No | |
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Evaporator Freeze Thermostat | Yes | No | No | |
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Hard | Yes | Yes | Yes | |
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Liquid Line Solenoid Valve | No | No | No | |
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Motor Master→ Control or | Yes | No | No | |
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Support Feet | Recommended | No | Recommended | |
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Winter Start Control | Yes | No | No |
*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
{Required for
Accessory Description and Usage (Listed Alphabetically)
1. | 5. Cycle Protector |
A fan motor with ball bearings which permits speed reduction while maintaining bearing lubrication.
Usage Guideline:
Required on all units when MotorMasterr is used.
2. Compressor Start Assist - Capacitor and Relay
Start capacitor and relay gives a ”hard” boost to compressor motor at each start up.
Usage Guideline:
Required for reciprocating compressors in the following applications:
Long line
Low ambient cooling
Hard shut off expansion valve on indoor coil Liquid line solenoid on indoor coil
Required for
Long line
Low ambient cooling
Suggested for all compressors in areas with a history of low voltage problems.
3. Compressor Start Assist — PTC Type
Solid state electrical device which gives a ”soft” boost to the compressor at each
Usage Guideline:
Suggested in installations with marginal power supply.
4. Crankcase Heater
An electric resistance heater which mounts to the base of the compressor to keep the lubricant warm during off cycles. Improves compressor lubrication on restart and minimizes the chance of liquid slugging.
Usage Guideline:
Required in low ambient cooling applications. Required in long line applications.
Suggested in all commercial applications.
The cycle protector is designed to prevent compressor short cycling. This control provides an approximate
6. Evaporator Freeze Thermostat
An SPST
Usage Guideline:
Required when low ambient kit has been added.
7. Low-Ambient Pressure Switch Kit
A long life pressure switch which is mounted to outdoor unit service valve. It is designed to cycle the outdoor fan motor in order to maintain head pressure within normal operating limits (approximately 100 psig to 225 psig). The control will maintain working head pressure at
Usage Guideline:
A
8.MotorMasterr Low-Ambient Controller
A
Usage Guideline:
A MotorMasterr Low Ambient Controller or
Suggested for all commercial applications.
9. Outdoor Air Temperature Sensor
Designed for use with Bryant Thermostats listed in this publication. This device enables the thermostat to display the outdoor temperature. This device also
is required to enable special thermostat features such as auxiliary heat lock out.
Usage Guideline:
Suggested for all Bryant thermostats listed in this publication.
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