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HAMWORTHY HEATING LTD
103
Merley Boiler Sequence Controller
500001210/D
External controls can transmit a demand for heat in the form of a analog signal of 0 –
10V DC. The RVS63.243
converts this signal to a temperature setting for the cascade set
-
point. The set
-
point for 10V can be set using
parameter 5952 in the range 0
-
90°C.
**
The maximum setting of 90°C is a result of the application with the boiler LMU control which has a maximum
setting of 90°C and will override any request for higher operating temperatures.
Refer to the boiler Instruction Manual for boiler parameter setting procedure.
Additionally each boiler LMU controller must also be configured for cascade by setting parameter 552 to 80.