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Discuss Wiring question: Upgrading a reciever unit for NOBO heating system in the Central Heating Systems area at

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  1. alichambers

    alichambers EF Member


    I am upgrading a NOBO RF heating system I have.

    As part of the upgrade, I have to replace a reciever unit that controls my water immersion heater.

    My existing installation is here:

    The water heater unit is in the middle marked "WH".

    My question is around wiring - it looks like a straight swap. The existing unit is wired as shown: 11.37.45.jpg

    And the new unit needs to be wired as follows:

    Does it look like a straight swap job, or is there anything I need to know?

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