Accessory Usage Guideline - Payne PA10 Series Product Data

10 seer 3-phase air conditioner

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User's information manual (9 pages)

Table Of Contents

Table of Contents

ACCESSORY

Compressor Crankcase Heater

Evaporator Freeze Thermostat

Winter Start Control

Accumulator

MotorMaster® Control

Wind Bafﬂe

Support Feet

Liquid-Line Solenoid Valve

Hard Shutoff TXV

Ball Bearing Fan Motor

* For tubing line sets between 80 and 200 ft and/or 20 ft vertical differential, (250 ft total equivalent length), refer to Residential's Split Systems Long-Line

Application Guidelines.

† Only when low-pressure switch is used.

‡ Required for MotorMaster Low-Ambient Control (full modulation of motor speed).

ACCESSORY DESCRIPTION AND USAGE (Listed Alphabetically)

1. Ball Bearing Fan Motor

A fan motor with ball bearings which permits speed reduction while maintaining bearing lubrication.

SUGGESTED USE: Required on all units where Low-Ambient kit (full modulation feature) or MotorMaster® Control has been added.

2. Compressor 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 chance of refrigerant slugging. May or may not include a thermostat control.

SUGGESTED USE: When interconnecting tube length exceeds 80 ft.

When unit will be operated below 55°F (12.8°C) outdoor air temperature. Use with low-ambient controller.

All commercial installations.

3. Compressor Sound Hood

Wraparound sound attenuation cover for the compressor. Reduces unit sound level by about 2dBA.

SUGGESTED USE: Unit installed closer than 15 ft to quiet areas—bedrooms, etc.

Unit installed between 2 houses less than 10 ft apart.

4. Cycle Protector

Solid-state timing device which prevents compressor rapid recycling. Control provides an approximate 5-minute delay after power to the compressor has

been interrupted for any reason, including normal room thermostat cycling.

SUGGESTED USE: Installations in areas where power interruptions are frequent.

Where user is likely to ''play'' with the room thermostat.

All commercial installations.

Installations where interconnecting tube length exceeds 80 ft.

High-rise applications.

5. Evaporator Freeze Thermostat

An SPST temperature actuated switch which stops unit operation when evaporator reaches freeze-up conditions.

SUGGESTED USE: All units where winter start control has been added.

6. Filter Drier

A device for removing contaminants from refrigerant circulating in an air conditioning system: single-direction ﬂow.

SUGGESTED USE: Suggested in all ﬁeld-connected split-system air conditioners.

7. High-Pressure Switch

Auto reset SPST switch activated by refrigerant pressure on high side of refrigerant circuit. Cycles compressor off if refrigerant pressure rises to about 400

psig. Provides additional protection against compressor damage due to loss of outdoor airﬂow. To prevent rapid compressor recycling, cycle protector can

be used with this switch.

SUGGESTED USE: Installations exposed to very ''dirty'' outdoor air.

Installations where condenser inlet air temperature exceeds 125°F (51.7°C).

8. Liquid Solenoid Valve (LSV)

An electrically operated shutoff valve to be installed at the outdoor or indoor unit (depending on tubing conﬁguration) and which stops and starts refrigerant

liquid ﬂow in response to compressor operation. Maintains a column of refrigerant liquid ready for action at next compressor operation cycle.

SUGGESTED USE: For improved system performance in air conditioners for certain combinations of indoor and outdoor units. Refer to ARI Unitary Directory.

In certain long line applications. (Refer to Long-Line Application Guideline.)

9. 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 100 psig to 225 psig). The control will maintain working head pressure at low-ambient temperatures down to

0°F (–17.8°C) when properly installed.

SUGGESTED USE: A Low-Ambient Pressure Switch or MotorMaster®—Low-Ambient Controller must be used when cooling operating is used at outdoor

temperatures below 55°F (12.8°C).

10. Low-Pressure Switch

Auto reset SPST switch activated by refrigerant pressure on low side of refrigerant circuit. Cycles compressor off if refrigerant pressure drops to about 27

psig. Prevents indoor coil freeze-up due to loss of indoor airﬂow. Also, provides additional protection against compressor damage due to loss of refrigerant

charge. To prevent rapid compressor recycling. Cycle protector can be used with this switch.

SUGGESTED USE: Where indoor coil is exposed to ''dirty'' air.

All commercial installations.

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, it maintains condensing temperature at 100°F ± 10°F.

SUGGESTED USE: Cooling operation at outdoor temperatures below 55°F.

All commercial installations.