Accessory Usage Guideline; Accessory Description And Usage (Listed Alphabetically); Compressor Start Assist; Crankcase Heater - Bryant EVOLUTION 187B Product Data

ACCESSORY USAGE GUIDELINE

ACCESSORY
Compressor Start Assist Capacitor and Relay

Crankcase Heater

Evaporator Freeze Protection
Liquid --- Line Solenoid Valve
Low--- Ambient Control
Puron Refrigerant Balance Port Hard --- ShutOff TXV
Support Feet
Winter Start Control
* 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 Piping and Longline Guideline.
{ Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.

Accessory Description and Usage (Listed Alphabetically)

1. 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
Hard shut off expansion valve on indoor coil
Liquid line solenoid on indoor coil
Required for single- -phase scroll compressors in the
following applications:
Long line
Suggested for all compressors in areas with a history of
low voltage problems.
2. 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.
3. Evaporator Freeze Thermostat
An SPST temperature- -actuated switch that stops unit operation
when evaporator reaches freeze- -up conditions.
Usage Guideline:
Required when low ambient kit has been added.
4. 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.
REQUIRED FOR LONG LINE
APPLICATIONS*
Yes
Standard
No
No
No
Yes{
No
No
5. Support Feet
Four stick- -on plastic feet that raise the unit 4 in. (101.6 mm)
above the mounting pad. This allows sand, dirt, and other debris
to be flushed from the unit base, minimizing corrosion.
Usage Guideline:
Suggested in the following applications:
Coastal installations.
Windy areas or where debris is normally circulating.
Rooftop installations.
For improved sound ratings.
6. Thermostatic Expansion Valve (TXV)
A modulating flow- -control valve which meters refrigerant liquid
flow rate into the evaporator in response to the superheat of the
refrigerant gas leaving the evaporator.
Kit includes valve, adapter tubes, and external equalizer tube.
Hard shut off types are available.
NOTE: When using a hard shut off TXV with single phase
reciprocating compressors, a Compressor Start Assist Capacitor
and Relay is required.
Usage Guideline:
Required to achieve AHRI ratings in certain equipment
combinations. Refer to combination ratings.
Hard shut off TXV or LLS required in air conditioner
long line applications.
Required for use on all zoning systems.
7. Winter Start Control
This control is designed to alleviate nuisance opening of the
low- -pressure switch by bypassing it for the first 3 minutes of
operation.
7
REQUIRED FOR SEA COAST APPLICA-
TIONS (Within 2 miles/3.22 km)
No
Standard
No
No
No
Yes {
Recommended
No