Installation

 

Economizer Actuator Circuit Legend

 

 

 

 

 

 

Device Designation

Device Designation

Parts And Notes

 

 

 

 

 

 

 

M.H. M955, (Up to 3 motors may be

 

MM

Modutral Motor

controlled as shown. Additional motors

 

 

 

must be slaved.)

 

 

 

 

 

TR

Transformer

M.H. 13081B; cover mounted

 

 

 

 

 

EC

Enthalpy Control

M.H. H2051046

 

 

 

 

 

MP

Minimum Position Potentiometer

M.H. S96A1012

 

 

 

 

 

EFI

Evaporator Fan Interlock

Field Provided

 

 

 

 

 

7TB88

Low Voltage Terminal Strip

Located in Temperature Controller

 

Panel

 

 

 

 

 

 

 

 

 

 

1 Motor/Circuit = None Req.

 

R

1/4 Watt - 5% Carbon

2 Motors/ circuit = 1300 Ohms

 

 

 

3 Motors/Circuit = 910 Ohms

 

 

 

 

No System Control

Temperature Control Parameters

Each unit ordered with the “No Controls” option, requires a field provided and field wired temperature controller. Single refrigerant circuit units require a 2-step control device, and dual refrigerant circuit units require a 4-step control device.

Each unit is shipped form the factory with internal “Fixed-On” & “Fixed-Off” time delays wired into each step of cooling. The “Fixed-Off” timers are 5 minutes each and they begin timing when the circuit for that step of cooling is deactivated. The “Fixed-On” timers are 3 minutes each and they begin timing when the circuit for that step is activated.

Note: Units ordered with the “No Controls” option can not be used with EVP Chiller applications.

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

Wire the controller in accordance with the field connection diagram illustrated in Figure 25.

SS-SVX09A-EN

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Trane RAUC-C25, RAUC-C50, RAUC-C30 No System Control, Temperature Control Parameters, Economizer Actuator Circuit Legend

RAUC-C20, RAUC-C40, RAUC-C25, RAUC-C30, RAUC-C60 specifications

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