USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
18
Heater Control
The HLBASE OmniLogic provides a set of 4 low voltage dry contacts that can be connected to most gas heaters or heat pumps with 24V control circuits. When
used with the optional Input/Output Expander Board (HLIOEXPAND), 8 dry contact relays are available. Refer to the diagram below for a generic heater con-
nection. The manuals supplied with most heaters also include specific wiring instructions for connecting the heater to an external control (usually identified as
“2-wire” remote control). For millivolt or line voltage heaters, contact Hayward Tech support, 908-355-7995. Refer to the information on the following pages
for more details on the connection to several popular heaters. Refer to the diagram on page 15 for the location of heater connections (LVR) on the OmniLogic
Main Board. Record all connections in the Connection Table.
Generic Heaters
1. Wire heater to 120/240V power source per the instructions in the heater manual. The OmniLogic does NOT control the power going to the heater.
2. Wire the OmniLogic dry contact heater output per the diagram below. Many internal parts of the heater can get very hot--see the heater manufacturer’s
recommendations on the minimum temperature rating for wires. If no guidance is given, use 105°C rated wire.
3. Set any ON/OFF switch on the heater to ON.
4. Set the thermostat(s) on the heater to the maximum (hottest) setting.
Laars Heaters
1. Turn power off to heater.
2. Remove factory jumper from terminal block.
3. Wire OmniLogic to the heater as shown.
4. Ensure toggle switch is in the ON position.
5. Set heater thermostats to maximum position.
