Carrier Access KSALA0201R22, KSALA0301410 Installation Instructions Manual

KSALA0201R22
KSALA0301410

Installation Instructions

Low-Ambient Pressure Switch

NOTE: Read the entire instruction manual before starting the
installation.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory−authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit.. Consult local building codes
and current editions of the National Electrical Code ( NEC ) NFPA

70. In Canada, refer to current editions of the Canadian electrical
code CSA 22.1.

!

Recognize safety information. This is the safety−alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety−alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.

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INTRODUCTION

These instructions cover the installation of Low−Ambient Pressure
Switch Part No. KSALA0201R22 and KSALA0301410 in all
single−speed air conditioners or heat pumps using R−22 or
R−410A refrigerant. This kit is also acceptable for use on 2−stage
air conditioners or heat pumps using R−410A and permanent split
capacitor (PSC) fan motors.. Refer to Table 1 for kit usage.

DESCRIPTION AND USAGE

The Low−Ambient Pressure Switch Kit is a long−life pressure
switch which turns the fan on and off as shown in Table 1. It is
wired in series with black fan lead. Sleeve−bearing motors can be
used with this control.

Other accessories may be required. Refer to the Required Changes
for Cooling Units and Heat Pump Units section in this document
for further details.

.

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.

!

CAUTION

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal
injury or death.

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.

INSTALLATION

The pressure switch is mounted inside the outdoor unit cabinet by
using adapter tube supplied. The adapter tee is mounted to liquid
service valve and tube is either routed through one of the knockout
holes in unit cabinet (vertical discharge product) or through one of
the service valve holes in unit cabinet (horizontal discharge
product). From inside cabinet, the flare nut is attached to extender
tube. (See Fig. 1.) The pressure switch is wired in series with black
or common fan lead.

WIRING FOR ALL VOLTAGES OF COOLING UNITS

A. Single− And Two−Stage Non−Communicating Capable

For all voltages of cooling units, refer to Fig. 2 and wire
low−ambient pressure switch as follows:

1. Disconnect black fan lead from contactor and connect this
lead to yellow or violet wire from low−ambient pressure
switch using connector supplied.

NOTE: To ensure electrical isolation and strain relief, it is
recommended to wrap connector with UL approved electrical tape
overlapping the wires on each side by a minimum of 1 inch.

2. Connect remaining blue wire from low−ambient pressure
switch to contactor terminal from which black fan lead was
removed.

B. Single− And Two−Stage Communicating Capable

For all stages of cooling units, refer to Fig. 3 and use
Low−Ambient Pressure Switch as follows:

1. Disconnect black fan lead from control board and connect it
it to yellow or violet wire from low ambient pressure switch
connector supplied.

NOTE: To ensure electrical isolation and strain relief, it is
recommended to wrap connector with UL approved electrical tape
overlapping the wires on each side by a minimum of 1 inch.

2. Connect blue wire from low−ambient pressure switch to
control board terminal from black fan lead was removed.

WIRING FOR HEAT PUMPS

Heat pumps require a normally closed Isolation Relay (Part No.
KHAIR0201AAA or equivalent) with the 24v coil connected to
the C and O terminals of defrost board or control board.

A 208/230v Applications

For 208/230v heat pump applications, refer to Fig. 4 and wire
low−ambient pressure switch as follows:

1. Remove black lead of outdoor fan motor connected to de­frost board OF2 or control board ODF depending on type
of unit.

2. Install piggyback female terminal on violet wire harness
(provided in isolation relay kit) to tab 1 of isolation relay.
Connect non−piggyback female termination of same violet
wire to one side of provided connector. Connect the female
termination of violet (or yellow) lead of low ambient pres­sure switch to the other side of the provided connector.
Connect the female termination of the black fan motor lead
to the male piggy back terminal located at tab 1 of relay.

NOTE: To ensure electrical isolation and strain relief it is
recommended to wrap connector with UL approved electrical tape
overlapping the wires on each side by a minimum of 1”.

3. Install piggyback female terminal on black wire harness
(provided in isolation relay kit) to tab 2 of relay. Connect
non−piggyback female termination of same black wire to
OF2 on defrost board or ODF on control board. Connect
the female termination of blue lead of low ambient pressure
switch to the male piggy back terminal located at tab 2 of
relay.

4. Install orange wire (provided in isolation relay kit) to one
side of the relay coil. Connect the other side to the O wire
coming from defrost board or control board.

5. Install black wire (provided in isolation relay kit) to oppos­ite side of the relay coil. Connect the other side to the C
wire coming from defrost board or control board.

6. Reinstall control box cover and reconnect power to unit.

B. 460v Applications

For 460v heat pump applications, refer to Fig. 5 and wire

−ambient pressure switch as follows:

low

1. Remove black lead of outdoor fan motor connected to out­door fan relay terminal 3.

2. Install piggyback female terminal on violet wire harness
(provided in isolation relay kit) to tab 1 of isolation relay.
Connect non−piggyback female termination of same violet
wire to one side of provided connector. Connect the female
termination of violet (or yellow) lead of low ambient pres­sure switch to the other side of the provided connector.
Connect the female termination of the black fan motor lead
to the male piggy back terminal located at tab 1 of relay.

NOTE: To ensure electrical isolation and strain relief it is
recommended to wrap connector with UL approved electrical tape
overlapping the wires on each side by a minimum of 1” (25.4 mm).

3. Install piggyback female terminal on black wire harness
(provided in isolation relay kit) to tab 2 of relay. Connect
non−piggyback female termination of same black wire to
outdoor fan relay terminal 3. Connect the female termina­tion of blue lead of low ambient pressure switch to the male
piggy back terminal located at tab 2 of relay.

4. Install orange wire (provided in isolation relay kit) to one
side of the relay coil. Connect the other side to the O wire
coming from defrost board or control board.

5. Install black wire (provided in isolation relay kit) to oppos­ite side of the relay coil. Connect the other side to the C
wire coming from defrost board or control board.

6. Reinstall control box cover and reconnect power to unit.

REQUIRED CHANGES FOR COOLING UNITS AND HEAT
PUMP UNITS

1. Crankcase heaters are required on all applications where
low−ambient controls are used.

2. Start capacitor and relay (hard start) kits are required on all
single−phase applications where low−ambient controls are
used.

3. Evaporator freeze thermostat KAAFT0101AAA is required
on all applications where low−ambient controls are used.

4. Wind baffles are recommended for temperatures below 0_F
(−17.80_C) or where there is substantial wind. For vertical
discharge outdoor products see Fig. 7 for dimensions of
Baffle Assembly. For horizontal discharge outdoor products
consult Product Data for Wind Baffle Kits.

NOTE: When wind baffles are used on vertical discharge
products, raising the unit off of pad a minimum of 4 in. is required
to provide better airflow for moderate− and high−ambient
temperatures. Check presale literature for available support feet or
unit risers.

5. For cooling applications only, winter start control
KAAWS0101AAA must be used where low−pressure
switch tripping may be encountered. Winter start control
must be wired in parallel with low−pressure switch. This al-
lows a delay of 3 minutes before low−pressure switch be­comes part of control circuit. (See Fig. 6.)

2

NOTE: See Winter Start Control Kit for detailed Installation
Instruction.

SERVICE FITTING CAP

VALVE CORE END

FLARE NUT

ON PRESSURE

ADAPTER TEE

EXTENDER TUBE

FLARE NUT

SWITCH

CONNECTOR

CONTACTOR

PRESSURE

SWITCH

BLUE

YELLOW

OR

VIOLET

BLACK

FAN

MOTOR

LIQUID REFRIGERANT SERVICE
VALVE SERVICE FITTING

A00025

Fig. 1 — Low Ambient Pressure Switch

CONTROL

BOARD

ODF

BLUE

PRESSURE
SWITCH

CONNECTOR

YELLOW

OR

VIOLET

BLACK

FAN

MOTOR

A13042

Fig. 3 — Power Wiring for All Voltages of Cooling Applica-

tions − Single and Two−Stage Communicating Capable

13

DEFROST

BOARD

OUTDOOR

FAN RELAY

O

C

ISOLATION

RELAY

Wire provided in
Isolation Relay Kit

2

1

VIOLET

BLACK

BLUE

YELLOW

OR VIOLET

PRESSURE

SWITCH

CONNECTOR

Fig. 2 — Power Wiring for All Voltages of Cooling Applica-

A97326

tions − Single and Two−Stage Non−Communicating Capable

ODF OR OF2

DEFROST BOARD
OR CONTROL BOARD

O

C

BLACK (Wire provided in Isolation Relay Kit)

ISOLATION

RELAY

Wires provided in
Isolation Relay Kit

2

1

VIOLET

BLACK

BLUE

YELLOW
OR VIOLET

FAN MOTOR

PRESSURE

SWITCH

CONNECTOR

A12593

Fig. 4 — Power Wiring for 208/230v Heat Pump

Applications

T

TDR

C

LPS

FAN MOTOR

Wires provided in
Isolation Relay Kit

A12594

Fig. 5 — Power Wiring for 460v Heat Pump Applications

LPS

LOW-PRESSURE SWITCH

C

CONTACTOR COIL

TDR

TIME DELAY RELAY

T

RELAY COIL

FACTORY WIRING
FIELD WIRING

Fig. 6 — Low Voltage Wiring for Winter Start Control

3

A93165

START−UP

To start units equipped with the low−ambient pressure switch,
perform the following steps:

1. Turn power on to unit.

2. Set thermostat below room temperature.

3. Wait for the unit to start. There may be a 5−minute delay in
the thermostat or in the outdoor unit.

4. Observe unit operation as described below.

a. The fan will be off when compressor starts.

b. At outdoor temperatures around 0_F (−17.8_C), fan

may not run at all.

c. At summer temperatures, fan will start after 10 to 30

seconds of compressor operation and may not turn off
until thermostat is satisfied.

d. At outdoor ambient between 80_F (26.7_C) and 20_F

(−6.7_C), fan will turn on and off to maintain pressure
as shown in Table 1.

Table 1—Kit Usage and Cut−In / Cut−Out Pressures

KIT PART NO. REFRIGERANT

KSALA0201R22 R-22 225 100 Blue and Yellow

KSALA0301410 R-410A 365 200 Blue and Violet

PRESSURE SWITCH CLOSES

(PSIG)

PRESSURE SWITCH OPENS

(PSIG)

WIRE COLORS

4

A06450

UNIT SIZE AA UNIT HEIGHT A B C-1 C-2 C-3 D

Mini Base 23-1/8

Small 25-3/4

Medium 31-1/4

Large 35

25-5/16 20-3/8 10-1/16

28-11/16 23-13/16 11-3/4

32-1/8 27-3/16 13-1/2
35-1/2 30-5/8 15-3/16

38-15/16 34 16-7/8

42-5/16 37-3/8 18-9/16

45-11/16 40-13/16 20-1/4

25 20-3/8 10-1/16

28-7/16 23-13/16 11-3/4

31-13/16 27-3/16 13-1/2

35-1/4 30-5/8 15-3/16
38-5/8 34 16-7/8

42 37-3/8 18-9/16

45-7/16 40-13/16 20-1/4

25-1/2 20-3/8 10-1/16

28-15/16 23-13/16 11-3/4

32-5/16 27-3/16 13-1/2

35-3/4 30-5/8 15-3/16
39-1/8 34 16-7/8
42-1/2 37-3/8 18-9/16

45-15/16 40-13/16 20-1/4

25-1/2 20-3/8 10-1/16

28-15/16 23-13/16 11-3/4

32-5/16 27-3/16 13-1/2

35-3/4 30-5/8 15-3/16
39-1/8 34 16-7/8
42-1/2 37-3/8 18-9/16

45-15/16 40-13/16 20-1/4

Vertical Units (in.)

1-5/16 8-1/4 3-1/2 39-1/4

3-15/16 10-7/8 6-1/8 41-7/8

9-3/8 16-5/16 11-9/16 47-3/8

13-3/16 20-1/8 15-3/8 51-1/8

Fig. 7 — Vertical Discharge Products Baffle Assembly

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Copyright 2015 CAC / BDP S 7310 W. Morris St. S Indianapolis, IN 46231

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Edition Date: 01/15

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Catalog No: IIK−KSALA0301−02

Replaces: IIK−KSALA301−01