Paragon ERC-2 Installation Data Download Page 4

4

CONTrOL WIrINg

•   All wiring should conform to the National Electric Code and local 

regulations

•  Use copper conductors only
•   Electrical leads should not be taut; allow slack for temperature 

change and vibration

The wiring diagrams for the ERC-2 are shown below:

Figure. 7

Figure. 8

wiring installation Procedure

Accessing the terminals 

1.  Open the metal case to access the control connectors. The cable can 

be disconnected from the display module while the control is being 

wired. Reconnect the cable before using the unit.

Connecting the sensors 

1.  Connect the evaporator sensor to the lower terminal block in the 

upper right corner.

2.  Connect the zone sensor to the upper terminal block in the upper 

right corner.

Figure. 9 – Sensor Connectors

Connecting the refrigeration/defrost equipment 

1.  Connect the wires from the compressor (including the thermostat) 

to the correspondent terminal on the bottom side of the control  

(Fig. 10 for quick connect version or Fig. 11 for terminal block version).

2.  Connect the defrost device (heater or hot gas solenoid) to the 

terminal in the control (Figs. 10 and 11).

3.  Connect the wire from L1 - 120V AC or 208-240V AC line - to the 

terminal marked as “COM”.

4. Connect also the fan wires to the terminals marked as “FAN”.
5.  Use the alarm connections to connect an alarm to the control, as 

shown in Figures 10 and 11.

Figure. 10 – load / AC input Connectors – Quick Connects

Figure. 11 – load / AC input Connectors – Terminal Blocks

Supplying Power to the Unit 

1. The power input must be connected to the terminals on the left  

  side of the control (Figures 10 and 11). Connect the 120V AC L1 wire  

  (or 208-240V AC L1 wire) to the uppermost terminal and the  

  120V AC neutral (or 208-240V AC L2 wire) to the lowermost terminal.
2. The terminals in the middle are used to change the voltage of the  

  unit. Refer to the wiring diagram (Figures 7 and 8) to see how to  

  connect the jumpers for 120V AC or 208-240V AC
3. For the models supplied with a metal case, connect the ground wire  

  to the grounding lug on the bottom of the case.

Reconnecting the Display Module 

1. Reconnect the display module cable to the control.

Figure. 12 – Display Module Cable

wiRiNG DiAGRAM

120V AC

208/240V AC

Summary of Contents for ERC-2

Page 1: ... the Clock It maintains the correct time of day for up to 100 hours Microprocessor Based Electronics High reliability and repeatability FCC Compliance This device complies with CFR 47 Part 15 Class A FCC requirements Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference th...

Page 2: ...ation time amount of time for the defrost duration It also functions as a back up for temperature termination Defrost termination temperature temperature that will cause the defrost to terminate if reached before defrost duration time Fan start temperature temperature that will cause the fan to re start after defrost Setpoint Setpoint temperature cut out a setpoint temperature can be programmed to...

Page 3: ...re in compliance with all federal state and local requirements including without limitation all requirements imposed under the National Electric Code and any applicable building codes CAUTION To prevent possible electric shock or equipment damage disconnect electrical power to the unit before and during installation DO NOT restore electrical power to the unit until the control is properly installe...

Page 4: ...rsion 2 Connect the defrost device heater or hot gas solenoid to the terminal in the control Figs 10 and 11 3 Connect the wire from L1 120V AC or 208 240V AC line to the terminal marked as COM 4 Connect also the fan wires to the terminals marked as FAN 5 Use the alarm connections to connect an alarm to the control as shown in Figures 10 and 11 Figure 10 Load AC Input Connectors Quick Connects Figu...

Page 5: ...displayed Step 4 Press SET to accept the new time Step 5 Press DOWN to go to the next parameter Setpoint Temperature SEt cut out Step 6 Press SET to change the setpoint temperature Step 7 or Press UP or DOWN to go to the desired setpoint The range is 40 to 60 F or 40 to 16 C Step 8 Press SET to accept the change Step 9 Press DOWN to exit the first level of programming Note 1 During programming if ...

Page 6: ...from 0 to 59 minutes Compressor Run Time CPrn Time the compressor will run between defrosts Number of Defrosts nodF Number of defrosts per day from 0 to 8 0 means 1 defrost every 48 hours Defrost Start Time dEF1 8 Start time of each defrost Defrost Duration dEFd Defrost duration time back up for defrost termination temperature Range from 0 minutes to 4 hours Fan Delay FAnd Delay time for the fan a...

Page 7: ...rature Alarm indicates that the temperature has gone above the high alarm setpoint For Error Codes 1 and 2 cut the power to the unit and correct the problem to reset the display For Codes 3 and 4 press the UP or DOWN button on the display to reset the error message If the display still shows the message the sensor must be replaced The Error Codes 6 and 7 will be automatically reset once the temper...

Page 8: ... Ranco Paragon and Uni Line are trademarks of Robertshaw its subsidiaries and or affiliated companies All other brands mentioned may be the trademarks of their respective owners For Technical Service Telephone 1 800 445 8299 TechnicalService robertshaw com www uni line com www robertshaw com 2015 Robertshaw 10 15 7515010 Rev E 8 ...

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