Hard Start Components; Time Delay Control (Tdc); Low Ambient Control (Lac); High Pressure Controls (Hpc) - Reelin PNE 13 Seer Installation Instructions Manual

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Table of Contents

TABLE 9

MAXIMUM SYSTEM CHARGE VALUES: (-)PNE SINGLE PHASE

Model

Size*

-018

-024

-030

-036

-042

-048

*-060 comes with the crankcase heater factory-installed.

TABLE 10

MAXIMUM SYSTEM CHARGE VALUES: (-)PPC

Model

Size*

-018

-024

-030

-036

-042

-048

*-060 comes with crankcase heater factory-installed.

All heaters are located on the lower half of the compressor shell. Its purpose is to

drive refrigerant from the compressor shell during long off cycles, thus preventing

damage to the compressor during start-up.

At initial start-up or after extended shutdown periods, make sure the heater is ener-

gized for at least 12 hours before the compressor is started. (Disconnect switch on

and wall thermostat off.)

14.2 HARD START COMPONENTS

Start components are not usually required with the scroll compressors used in

(-)PNE heat pumps, but are available for special cases and where start components

are desirable to reduce light dimming.

NOTE: Hard start components are standard on (-)PNE/(-)PPC****AZ models.

14.3 TIME DELAY CONTROL (TDC)

The time delay (TDC) is in the low voltage control circuit. When the compressor

shuts off due to a power failure or thermostat operation, this control keeps it off at

least 5 minutes which allows the system pressure to equalize, thus not damaging

the compressor or blowing fuses on start-up.

14.4 LOW AMBIENT CONTROL (LAC)

This component senses compressor head pressure and shuts the heat pump fan off

when the head pressure drops to approximately 150 PSIG. This allows the unit to

build a sufficient head pressure at lower ambient in order to maintain system bal-

ance and obtain improved capacity. Low ambient control should be used on all

equipment operated below 65°F ambient.

14.5 HIGH PRESSURE CONTROL (HPC)

These controls keep the compressor from operating in pressure ranges which can

cause damage to the compressor. The HPC is in the low voltage control circuit.

High pressure control (HPC) is a manual reset which opens near 440 PSIG. Do not

reset arbitrarily without first determining what caused it to trip.

NOTE: High pressure control is standard on (-)PNE

14.6 ENHANCED COMPRESSOR PROTECTION KIT – RXPG-A01

This kit includes an enhanced defrost control, auto-reset high pressure control

(HPC), and an auto-reset low pressure control (LPC) that will convert the control

system of a (-)PNE-****BZ to the enhanced control system of a (-)PNE-****AZ. This

kit provides compressor protection under abnormally high head pressure conditions

(outdoor fan failure, restriction, dirty coil, etc.) or abnormally low suction pressure

conditions (restriction, TEV failure, loss of charge, indoor blower failure, etc.) while

eliminating nuisance tripping sometimes experienced with conventional control sys-

tems.

NOTE: This kit is not necessary on (-)PNE

standard from the factory with this control system.

Compressor

Model Number

ZR16K4-PFV

ZR22K3-PFV

ZR28K3-PFV

ZR34K3-PFV

ZR40K3-PFV

ZR45K3-PFV

Compressor

Model Number

TBD

/(-)PPC

****AZ models since they come

Charge Limit

Without

Crankcase Heater*

7.2 lbs.

9.6 lbs.