Bryant R-410A ACCESSORY DESCRIPTION AND USAGE Listed Alphabetically Continued, Level, Size, 1000

ACCESSORY DESCRIPTION AND USAGE (Listed Alphabetically) Continued

10.Low-Ambient Pressure Switch

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 200 psig to 365 psig). The control will maintain working head pressure at low-ambient temperatures down to 0°F (–17.8°C) when properly installed.

SUGGESTED USE: Cooling operation at outdoor temperatures below 55°F (12.8°C).

11.MotorMaster® Control

A fan speed control device activated by a temperature sensor. Designed to control condenser fan motor speed in response to the saturated, condensing temperature during operation in cooling mode only. For outdoor temperatures down to –20°F (–28.9°C), it maintains condensing temperature at 100°F ± 10°F (37.8°C ± 5.6°C).

SUGGESTED USE: Cooling operation at outdoor temperatures below 55°F (12.8°C).

All commercial installations.

12.Outdoor Air Temperature Sensor

A device that allows the temperature at a remote location (outdoors) to be displayed at the thermostat.

SUGGESTED USE: All Bryant programmable thermostats.

13.Piston Body

This piston body is to be used as a replacement for the FK4C Fan Coil R-22 thermostatic expansion valve when used with Puron® (R-410A) air conditioner

units. Use piston and piston ring shipped with outdoor unit for installations under 50 ft. SUGGESTED USE: All Puron® air conditioner installations matched with FK4C Fan Coils.

14.Support Feet

Four stick-on plastic feet which raise the unit 4 in. above the mounting pad. This allows sand, dirt, and other debris to be flushed from the unit base, minimizing corrosion.

SUGGESTED USE: For improved sound ratings.

Coastal installations.

Windy areas or where debris is normally circulating.

Rooftop installations.

15.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 shutoff valves are available. Do not use with Liquid-Line Solenoid Valve. NOTE: Compressor Start Assist— Capacitor/Relay Type must also be used. Do not use with Liquid Line Solenoid.

SUGGESTED USE: For improved system performance in cooling mode for certain combinations of indoor and outdoor units. Refer to ARI Unitary Directory. Required for use on all zoning systems.

16.Time-Delay Relay

An SPST delay relay which briefly continues operation of the indoor blower motor to provide additional cooling after the compressor cycles off.

SUGGESTED USE: For improved efficiency ratings for certain combinations of indoor and outdoor units. Refer to ARI Unitary Directory. Required for use on all zoning systems.

17.Winter Start Control

An SPST delay relay which bypasses the low-pressure switch for approximately 3 minutes to permit start-up for cooling operation under low-load

conditions.

SUGGESTED USE: All air conditioners where Low-Ambient Controller has been added.

SOUND POWER (dBA) (A-WTD, WITHOUT PURE TONE PENALTY)

	SOUND			OCTAVE BAND CENTER FREQUENCY (Hz)
UNIT	LEVEL
SIZE	(dBA)	125	250	500	1000	2000	4000	8000
018	74	52.0	63.5	65.5	69.0	64.5	58.0	51.0
024	74	57.5	64.0	67.5	68.5	66.0	60.5	53.0
030	75	58.5	66.0	69.0	69.0	66.0	61.0	53.5
036	77	61.0	67.5	71.0	71.5	70.0	67.0	58.0
042	77	61.0	67.0	68.5	66.5	63.5	56.5	51.5
048	78	61.5	68.0	71.5	72.0	68.5	65.5	60.0
060	78	61.5	65.5	69.0	69.5	65.0	64.0	56.0

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