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Installation Instructions

Liquid-Line Solenoid Valve KAALS KHALS

NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. SAFETY AND CONSIDERATIONS Installing and servicing air conditioning equipment can be hazardous due to system pressures and electrical components. Only trained personnel should install or service air conditioning equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils, or cleaning and replacing filters. All other operations should be performed by trained service personnel. When working on air conditioning equipment, observe precautions in the literature, on tags, and on labels attached to the unit. 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 may result in enhanced installation, reliability, or operation. Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations. Have a fire extinguisher available. WARNING: ELECTRICAL SHOCK HAZARD--Electrical shock may result in personal injury or death. Before beginning any installation or modification, be sure the main electrical disconnect switch is in the OFF position. TAG THE DISCONNECT SWITCH WITH A SUITABLE WARNING LABEL.

INTRODUCTION This instruction covers the installation of liquid-line solenoid valve kit Part No. KAALS0101LLS and KAALS0201LLS on air conditioners and Part No. KHALS0401LLS on heat pumps. Kit Part No. KAALS0201LLS and KHALS0401LLS are specifically designed to operate with R-410A refrigerant. Do not use kit Part No. KAALS0101LLS with R-410A refrigerant. However, kit Part No. KHALS0401LLS may be used for both R-22 and Puron® (R-410A) heat pump (only) applications. Table 1--Liquid Line Solenoid Kit Usage

R-22 Puron® (R-410A)

Used on single-speed units only.

AIR CONDITIONER *KAALS0101LLS *KAALS0201LLS

HEAT PUMP KHALS0401LLS KHALS0401LLS

The single-flow solenoid valve is for air conditioner applications. The bi-flow solenoid valve is for heat pump applications. Do not use the air conditioner solenoid valve on heat pumps. NOTE: The installation of some units requires the use of a hard shut-off TXV on the indoor coil. In these applications, a solenoid valve may or may not be necessary. Refer to the equipment Installation Instructions and the Application Guideline and Service Manual, or consult your distributor for location and flow arrow direction. DESCRIPTION AND USAGE The liquid-line solenoid valve closes when the thermostat demand is satisfied to prevent liquid refrigerant migration. This device is for use in long-line applications. NOTE: Refer to condensing unit or heat pump Installation Instructions for detailed control wiring. NOTE: For single-speed units, an accessory start capacitor and relay is required when using the liquid-line solenoid valve with single-phase single speed compressors.

Form:

AG-AALS-07

Cancels:

AG-AALS-06

Printed in U.S.A.

12-04

Catalog No.

63AA-LS3

ELECTRICAL JUNCTION ELECTRICAL COIL

FLOW ARROW*

VALVE

FLOW ARROW* STRAIGHT 3/8-IN. STUD

NOTE: System flow direction must match arrow on bottom of body.

* KAALS0101LLS - Flow arrow on bottom of valve body. KAALS0201LLS - Flow arrow on top of valve body. Fig. 1--Air Conditioner Solenoid Valve

A04213

INSTALLATION NOTE: For use in long-line applications, refer to the Long-Line Application Guideline for locations and flow arrow direction. CAUTION: UNIT COMPONENT DAMAGE--Failure to follow this caution may result in component failure due to excessive loading. A field-supplied 60va control power source may be necessary when adding the solenoid valve. Determine transformer loading prior to installation. Wiring must comply with local and National Electrical Code (NEC) requirements. PROCEDURE 1--AIR CONDITIONING APPLICATION OR HEAT PUMP COOLING ENHANCEMENT 1. Remove clip holding solenoid coil on valve assembly and slide coil off valve stem. 2. Wrap solenoid valve body with wet cloth to prevent distortion from heat. 3. Remove and discard solenoid valve end caps. Braze solenoid valve in liquid line within 2 ft of indoor coil. Solenoid valve flow arrow must point toward indoor coil. 4. Reinstall solenoid coil and retainer clip. Solenoid valve must be mounted with coil above valve body. (See Fig. 1.) PROCEDURE 2--HEAT PUMP APPLICATION HEATING ENHANCEMENT OR HEAT PUMP LONG LINE APPLICATION 1. Cut liquid line within 2 ft of outdoor unit (depending on application). 2. Place 3/8-in. flare nuts on cut ends of liquid line and flare both ends. 3. Remove and discard solenoid valve end caps, then connect flare nuts to solenoid valve assembly. Solenoid valve must be mounted with coil above valve body. (See Fig. 2.) Also, arrow on valve body must point toward outdoor unit. NOTE: When solenoid valve is de-energized (closed), refrigerant flow will be stopped only in the direction of the flow arrow on the valve body.

PROCEDURE

3--WIRING Solenoid coil must be wired into 24-v control circuit so coil is energized (open) with outdoor unit. For single-speed units, wire solenoid coil between Y (contactor) and C (common) terminals. (See Fig. 3.) For two-speed units using Infinity or Evolution controls (Model SYSTX), wire solenoid between Y and C on FE4 fan coil control board. The Y terminal is energized during compressor operation. (See Fig. 5.) For all other two-speed units, two single-pole, single throw relays are required to be wired per Fig. 4. The liquid line solenoid valve must be wired between relay contacts and C (common) terminals. (See Fig. 4.)

--2--

ELECTRICAL JUNCTION ELECTRICAL COIL

FLOW ARROW

3/8-IN.

SAE MALE FLARE

A04214

Fig. 2--Heat Pump Solenoid Valve

NON-PROGRAMMABLE THERMOSTAT MODEL AC 24 VAC HOT R

SINGLE AIR STAGE FURNACE CONDITIONER R

NON-PROGRAMMABLE THERMOSTAT MODEL HP 24 VAC HOT R

FA, FB, FC, FF, FX, FK, FV FAN COIL R

HEAT PUMP R

24 VAC COM C C HEAT STAGE 2 W/W1 C LLS COOL/HEAT STAGE 1 NC INDOOR FAN

C

C

C LLS

24 VAC COM

W/W1

W2

(W1 FOR FK & FV)

W2

HEAT STAGE 1

W/W1

Y/Y2

Y

NC

COOL STAGE 1

Y/Y2

Y/Y2

G

G

INDOOR FAN

G

G O/W2 O

RVS COOLING

A96004

NOT USED Y1

NOT USED

B L

TROUBLE

OPTIONAL OUTDOOR SENSOR CONNECTION

S1

S2

Fig. 3--Typical Solenoid Valve Wiring

A97626

--3--

NON-PROGRAMMABLE THERMOSTAT MODEL 2S

FK4/FV4 FAN COIL DH

TWO-SPEED HEAT PUMP

Y1 Y2

J1 JUMPER 24 VAC HOT 24 VAC COM FAN COOL/HEAT STAGE 2 HEAT STAGE 3 R C G Y/Y2 W/W2 R C G Y/Y2 W1 J2 JUMPER W2 RVS COOLING COOL/HEAT STAGE 1

N/A OUTDOOR SENSOR CONNECTION

R

LLS

C

Y2 Y2 W1

O/W2 Y1 B S1 S2

O Y1

O Y1 Y1

A04114

Fig. 4--Typical Solenoid Valve Wiring (Two-Speed Units)

FE Fan Coil User Interface

A B C D S1 S2

Green Yellow White Red

2-Speed AC or HP

A

A B C D

ABCD Connection

B C D

Optional Remote Room Sensor Humidifier Connection

HUM

LLS

COM 24V

Y

OAT

OAT Sensor

A04209

Fig. 5--Connection Diagram for Infinity or Evolution Communicating System

© 2004 CAC/BDP

7310 W. Morris St., Indianapolis, IN 46231

agaals07 --4--

Book/Tab:

1/3a, 1/5a, 4/2a, 4/5a

Catalog No. 63AA-LS3

Information

4 pages

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