SECTION 3 - INSTALLATION

Page S3-49

LX220 OPERATING INSTRUCTIONS

1. Set the thermostat to a relative position. We suggest you set it at maximum until the

pool starts to get too warm. This will keep the solar heating process going at maximum.

2. As the pool gets warmer, you can start to lower the thermostat until you find the setting

you like best.

3. Place the AUTO/OFF/ON switch to AUTO.

FOR POOL CLEANING/DRAINING/BACKWASHING

Ensure the pump is on and the valves set as previously discussed.

FOR COOLING DOWN A HOT POOL

Turn the LX220 to ON[manual override] during evening hours when the sun has set.

Manually monitor temperature drop. During the daylight hours ensure the LX220 is OFF.

SECTION 3 - INSTALLATION

Page S3-50

LX-220 SOLAR CONTROL

AUTO
OFF
ON

WATER FLOW
TO PANELS

MANUAL
OVERRIDE

POWER ON

SOLAR ON

POOL CLEANER
DELAY EXPIRED

WATER SENSOR
SERVICE REQD.

SOLAR SENSOR
SERVICE REQD.

WATER
TEMPERATURE

WARM

COOL

HOT

LOCK
SCREW

PUSH TO RESET POWER

FRONT PANEL LIGHTS

POWER ON

Indicates that electrical power is available to the LX220 solar controller and
that power is available to operate both the internal relay(s) and the automated
valve operators attached.

SOLAR ON

Indicates that the PCS1 is on. The bypass valve should now be routing water
to the PCS1 and the fan should now have power.

POOL CLEANER DELAY EXPIRED

Indicates that power should now be available to any pool vacuum auxiliary
pump that is wired to the optional second relay inside the LX220.

WATER SENSOR SERVICE
REQUIRED

Indicates that the pool water temperature sensor is either open, shorted or that
the electrical wire from the sensor to the LX220 has a defect. Could also be a
loose screw at the WTR terminals on the LX220 electronics board.

SOLAR SENSOR SERVICE
REQUIRED

Indicates that the attic temperature sensor is either open, shorted or that the
electrical wire from the sensor to the LX220 has a defect. Could also be a
loose screw at the SOL terminals on the LX220 electronics board.

Also turns on if the internal float in the PCS1 activates to shut the system
down because of a leak detection. Could also turn on if the leak detection float
inside the PCS1 is defective [opened].

SECTION 3 - INSTALLATION

Page S3-51

CIRCUIT BOARD CONNECTIONS

Transformer
Plug

Yellow

Green

Red

SENSORS
WTRSOL

Attic
Sensor

Pool Water
Sensor

Green Ground
Wire to
Transformer

COMPOOL

Relay to power PCS1
plugs into PMP socket

PMP Socket

Plug the PCS1 Power Relayinstalled at the bottom of the high voltage
compartment into this socket. [See next page].

SWP Socket

Plug the optional sweep [pool cleaner] pump relay into this socket.

VLV Socket

Plug the bypass valve operator into this socket.

WTR Terminals

Connect the pool water temperature sensor wires here.

SOL Terminals

Connect the attic temperature sensor wires here.

Power Plug

The three wire keyed plug from the power transformer plugs into the upper
right corner of the circuit board.

Green Ground Lug

Ensure that the green ground screw with lug is connected to the lower right
corner of the circuit board.