586 Air Handling Unit kits Control possibilities Every application is different. Is there a constant load or not, how to control your temperature and which controls are available? With our complete offering of 5 control possibilities, anything is possible. Flow chart to select your control type Type of application? Control type benefits Sensor Used Controller W control – control of supply or return air temperature J Responds to load variation (capacity is changed as a function of measured temperature, but slower than X- control) J Air temperature control J Easy to integrate, as no additional programming is needed for most standard AHU controllers Td, Ts/f or Tr (field supplied) External controller (DDC) using a proportional 0~10 V signal for capacity control (5 steps) X control – control of supply or return air temperature J Fastest response to load variation (capacity is immediately changed as a function of measured temperature) J Precise air temperature control J Ideal for comfort sensitive applications. This is also used by default in Daikin AHU controls Td, Ts/f or Tr (field supplied) External controller (DDC) using a proportional 0~10 V signal for capacity control (Stepless) Y control – control of evaporating/condensing temperature J Cost effective and simple solution, no additional DDC controller required J Fixed evaporating/condensing temperature, no direct temperature control J Ideal for applications with a constant cooling/heating load R2T/R3T (Daikin supplied) 3rd party thermostat (Daikin controller for field settings) Fresh Air AC (100% recirculation applications) 3rd party controller (DDC) Daikin controller Type of control? Type of load? Priority to ease of integration or priority to precise temperature control? Ease of integration Precise control Constant Variable Z control (Pair/multi/mix) Z’ control (Pair/multi/mix) Y control (Pair) X control (Pair) W control (Pair)
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