WeatherTRAK 2-Wire Controller Installation Guide
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Step 4 — Ground the System
For protection from electrical surges, the WeatherTRAK H2O control system requires proper earth grounding
using the WeatherTRAK Surge Arrestor (WT2W-H2O-SA) and ground rods.
Important: Failure to ground the system properly will void the warranty.
To comply with proper installation specifications, the following components should be grounded:
Product Maximum ground resistance
WeatherTRAK 2-wire Controller 25*
Surge Arrestor (WT2W-H20-SA)
Flow Decoder (WT2W-H20-FS) 25
* WeatherTRAK strongly recommends getting the controller to below 10 ohms but will accept less than 25 ohms.
Each installed grounding system shall maintain a maximum ground resistance defined above.
A UL Listed copper clad ground rod should be used to achieve the maximum ground resistance requirement.
A 5/8” X 96” ground rod is the smallest recommended size.
The WeatherTRAK 2-Wire controller should be protected through an AC surge protector on the primary
incoming power to the controller.
The WeatherTRAK 2-Wire controller provides a ground lug on the bottom front of the terminal board that
accepts a #6 AWG bare copper wire that should be connected to a grounding system.
Using the Line Surge Arrestor
The WeatherTRAK surge arrestor provides protection for the WeatherTRAK 2-wire controller and 2-wire path.
Surge arrestors should be properly connected to a ground rod or ground plate for it to be effective at
protecting the 2-wire system against surge events.
Surge arrestors should be installed in each of the following scenarios:
• Near the WeatherTRAK 2-wire controller
A surge arrestor should be spliced into each 2-wire path within 25 feet of the controller. This provides
sur
ge protection for the WeatherTRAK 2-wire controller.
• Along the 2-wire path
A surge arrestor should be spliced into the 2-wire path every 600 feet.
• At the end of the 2-wire path
A surge arrestor should be installed at the end of each 2-wire path branch 50 feet or longer when using a
star configuration.
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