Temperature Sensors
Water Sensor
This sensor is used to measure the pool/spa temperature and is installed in the filtration plumbing
after the filter but before either the solar or conventionally fueled heaters.
1. Drill a 3/8” (10mm) diameter hole in the PVC piping and remove all chips and burrs.
2. Insert sensor until O-ring collar sits flush on the hole.
3. Position hose clamp over the sensor and gently tighten until O-ring makes an adequate seal.
Do not overtighten.
Air Sensor
Mount the air sensor outdoors. IMPORTANT: The air sensor must not be mounted in direct sunlight.
Solar Sensor
For solar applications, mount the sensor near the solar collector array so that it is exposed to the
same sunlight as the collectors. Use additional cable (20 AWG) if necessary.
Optional Valve Actuators
For installation, refer to the mounting instructions included with the Hayward GVA-24 actuator or
equivalent. After configuring and first operating the valve, note that the internal cams in the actuator
may have to be adjusted depending on the way the actuator is mounted on the valve and the desired
valve action.
Plumbing
Flow Switch
A Hayward GLX-FLO flow switch (sold separately) is required if an HL-CHEM ORP & pH Sensing Kit
will be used. If no chemistry equipment is installed, the GLX-FLO is optional and can be used to
detect leaks or clogs in your pool's plumbing system. If using the GLX-FLO, it must be plumbed in
line with any chemistry sensing/dispensing equipment at the very end of the return plumbing. This
will ensure that the OmniHub will detect a leak if it occurs anywhere at the pool pad. Understand that
if a leak occurs after the flow switch (downstream), the OmniHub will not sense a no-flow condition.
IMPORTANT: There must be at least a 12” (30cm) straight pipe run before (upstream) the flow switch.
IMPORTANT: To ensure proper operation, verify that the arrow on the flow switch points in the direc-
tion of water flow.
Filter Pump
If the OmniHub has been packaged with a filter pump, refer to the included pump manual for plumb-
ing information.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
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