Laars Heaters
1. Turn power off to heater.
2. Remove factory jumper from terminal block.
3. Wire Pro Logic to the heater as shown.
4. Ensure toggle switch is in the ON position.
5. Set heater thermostats to maximum position.
to limit switches
remove jumper
Fusible Link
white
white
Hayward Heaters
Refer to the instructions in the heater manual for “2-wire Remote Thermostat” operation under “Remote Control
Connections” and the diagram below:
1. Turn off power to heater.
2. Wire Pro Logic to terminals 1 & 2 (see diagram).
3. Leave jumper attached to terminals 4 & 5.
4. Move “BYPASS” dipswitch on heater circuit board to “ON” position (up).
5. Turn heater power back on.
6. Switch heater to either “Pool” or “Spa” (it doesn’t make any difference which is selected, the Pro Logic will take
control).
7. Heater display should be “bO” (for “bypass On).
8. Heater will fire whenever Pro Logic requests (when Pro Logic “Heater” LED is illuminated).
Do not remove jumper
Terminal block located at
electrical junction box
Dipswitch located on heater
circuit board
PK
W
R
BK
R
ON
ºC
OFF
ºF
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Temperature Sensors
The Pro Logic utilizes 10K ohm thermistor type sensors. Three sensors (water temperature, air temperature and solar
temperature) are included. If the Pro Logic is being used to control a solar heating system, the solar sensor is required.
The sensors are provided with a 15 ft. cable. See page 5 and the diagram below for installation information.
AIR
SENSOR
SOLAR/SPA
SENSOR
POOL/SPA
SENSOR
Remote Display/Keypad
The Pro Logic main unit can connect to a maximum of 3 remote wired display/keypads (ordered separately).
Use four conductor cable (typically phone cable) to connect the wired remote display/keypad with the Pro Logic
Control Center as shown below. The maximum wiring distance is 500ft. (160m). Note that the terminals on both the
Pro Logic main unit and the wired remote display/keypad are numbered: Connect 1 to 1, 2 to 2, etc. Refer to diagram
below.
Remote Display unit
Alternative
Concealed Wiring
1
2
3
4
500 ft max
3.75 ”
4.50 ”
If multiple remote display/keypads are installed:
Never connect more than 2 wires to any terminal block. Two
remotes can be wired back to the Pro Logic main unit or the second display/keypad (and third, if applicable) can be
“daisy chained” with one display/keypad wired to the next. The maximum wire run from the Pro Logic main unit to the
furthest remote display/keypad is 500 ft (160m).
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