Control; Control Of Condensing Pressure; Control Of Crankcase Heater; Control Of Fan Speed - Danfoss Optyma Plus Manual

Manual

Control

Control of condensing pressure

Control of crankcase heater

Control of Fan Speed

Safety Parameter "Low
Pressure" for R448A / R449A /
R452A
Safety Parameter "High
Pressure" for R448A / R449A /
R452A
Controller Installation
• The setpoint condensing temperature is calculated from the measured ambient temperature plus an
adjustable Temperature O set (called Reference) and controlled by the fan speed
• Factory setting of Reference = 8.0K
• The Reference is accessible by pressing short the middle button of the controller
• When Reference is shown, it can be modi ed with the upper or lower button
• Additionally to this the control of the condensing temperature can be limited by following
parameters:
"r82" = minimal condensing temperature (factory set: 10.0°C)
"r83" = maximal condensing temperature (factory set: 40.0°C)
• The controller optimizes the regulation of the crankcase heater itself. The heating power depends on
the ambient temperature and suction pressure and is controlled by Pulse Width modulation
• There is no change of parameters "P45", "P46" and "P47" necessary on site
• The fan speed is controlled by PI-control, depends on the actual value and the setpoint of the
condensing temperature
• There is no change of parameters "F14" and "F21" to be provided on site
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"Electronic" Safety - LP
"Mechanical" Safety - LP
"Mechanical" Safety - HP
"Electronic" Safety - LP
Suction Pressure
Discharge Pressure
BC08728642552804-001701
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