The electrical connections to the RT500 are made to the supplied industry standard backplate. This simplifies installation, as no connections are made to the controller itself. Connection details are shown below - no Earth connection is required for the correct and safe operation of the RT500, but a parking terminal is provided to connect an Earth wire if one is present
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The electrical connections to the RT500 are made to the supplied industry standard backplate. This simplifies installation, as no connections are made to the controller itself. Connection details are shown below - no Earth connection is required for the correct and safe operation of the RT500, but a parking terminal is provided to connect an Earth wire if one is present
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After installing the backplate in a suitable location, wiring connections can be made as shown above. The following criteria apply to the installation:
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· - The
incoming AC mains supply should be 230V AC and fused at 5 amps.
· - Optimum
cable size for installation is 1.5 mm2; wiring colours should be in accordance with the current requirements of the IEE
Wiring Regulations.
· - Cable
entry should be from the rear of the backplate.
· - All
wiring connections should be securely made and be firmly gripped beneath the square brass washer on each terminal.
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The RT500 requires two ‘AA’ alkaline batteries to function correctly. Ensure that the batteries are inserted correctly, paying careful attention to the polarity markings on the battery and next to the battery holders.
Do not restore the mains supply to the system until all associated items are fully installed.
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NOTE: All electrical installation work should be carried out by a suitably qualified Electrician or other competent person. If you are not sure how to install this thermostat consult either with a qualified electrician, heating engineer or your boiler / heating system supplier for advice on how to continue.
Do not remove or refit the RT500 onto the backplate without the mains supply to the system being isolated. Test
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