Worcester Greenstar 4000 Installation And Maintenance Instructions Manual
Gas-fired condensing system appliance
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Also See for Greenstar 4000:
- User instructions (24 pages) ,
- User instructions (28 pages) ,
- Installation and maintenance instructions manual (96 pages)
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Installation And Maintenance Instructions
Gas-fired condensing system appliance
Greenstar 4000
GR4700iW S
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Table of Contents
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I’m trying to connect a 220 volt room thermostat & it used to be Ls & lr but I’m lost on this one
The Worcester Greenstar 4000 operates on a 230V power supply. To connect a 220V room thermostat, follow these steps:
1. Check Compatibility – Ensure the thermostat is compatible with a 230V system.
2. Locate Terminal Strip – Identify the low voltage (signal cables) terminal strip in the boiler.
3. Power Off – Turn off the power supply before making any connections.
4. Wiring – Connect the room thermostat wiring to the appropriate terminals as specified in the boiler’s wiring diagram.
5. Verify Polarity – Ensure correct polarity and secure connections.
6. Restore Power & Test – Turn the power back on and test the thermostat for proper operation.
Always follow the IET Wiring Regulations (BS7671) and ensure proper circuit protection. If unsure, consult a qualified electrician.
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@Mr. Anderson