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Local unit (slave) with relay output and 0...10 V DC
Multizone system
Application
- RTL 120-520 is the unit (SLAVE) for heating control and other functions of the single zone.
- This unit can be housed in a standard 503 built-in enclosure.
- It is compatible with switchboard frames and plates readily available on the market
– receives power from the auxiliary power supply ALC 318 or ALP 418
– controls the local thermal unit by the control of: : - On-Off zone valve with 230 V~ motor and modulation unit with 0 …10V– input
- On-Off zone valve with 24 V~ motor, or other voltages and modulation unit with 0 …10V– input
- zone valve with 24 V~ thermal motor, or other voltages and modulation unit with 0 …10V– input
- zone circulation pump with fi xed or variable number of revolutions
- burner or small zone boiler with 0…10 V- input as POWER or TEMPERATURE
- On-Off control of the valve and of the fan of a fan-coil with 0…10 V– input
- Any other device controllable with three-contacts relay and with 0 …10V– input
– internal room sensor or external sensor
– complete confi guration of the limits and of mode of use permitted to user
– three On-Off inputs to be programmed as required
– large display with simplifi ed readout for less expert users
– three push-button switches with “intuitive” use, again for less-expert users - Ability to function in event of breakdown of centralised communication
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