ROBERTS GORDON
®
CORAYVAC
®
M
ODULATING
H
EATING
C
ONTROL
C
ONTROLLER
I
NSTALLATION
M
ANUAL
100
Wire Specifications
18–28 AWG; twisted pair preferable
50’ (15.24 m) maximum length
Note:
Do not power the device from the same
transformer that powers the I/O Pro 812u controller.
8. Turn on power to control board.
Verify accuracy of the following:
• Baud rate DIP switches 4 and 5
• Protocol DIP switches 6, 7, and 8 jumper set cor-
rectly to EIA-232 or EIA-485
• Proper connection wiring
• Unique rotary address switches 1 – 99.
• If controllers have duplicate addresses, network
communication can be lost.
NOTES:
If RX LED is solid, then the terminations are
incorrect. If the network has greater than 32 devices
or exceeds 2000’ (610 m) a Repeater should be
installed. If a controller begins or ends a network
segment, a terminating resistor may be needed. The
controller recognizes physical changes (DIP
switches, rotary switches, and jumpers) upon power
up.
12.6.3 To set up the Modulating Controller for
Modbus over IP
1. Turn off power to control board.
2. Check the communications wiring for shorts and
grounds.
3. Connect Port E1 to the third-party device.
Note:
Port E1 will still be capable of BACnet
communication.
Wiring Specifications
• Maximum wire length, 328’ (100 m)
• Use one of the following CAT5 or higher Ethernet
cables:
o
A cross-over cable to connect the
controller directly to the third-party
device
o
A straight-through cable to connect
the controller to a hub or switch, and a
second straight-through cable to
connect the hub or switch to the third-
party device
Note:
Use the same polarity throughout the network
segment.
4. Turn on the power to the control board.
Verify accuracy of the following:
• Proper connection wiring.
• Confirm the IP address, subnet mask, and default
gateway address for your router with the manufac-
turer.
• Confirm the correct IP address through the Touch
screen.
12.7 To set up the Modulating Controller for N2
on Port 1
1. Turn off power to the control board.
2. Using the rotary switches, set the controller's
Summary of Contents for CORAYVAC
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Page 69: ...SECTION 8 PROGRAMMING AND TROUBLESHOOTING THE SYSTEM 65 THIS PAGE LEFT INTENTIONALLY BLANK ...
Page 71: ...SECTION 9 TROUBLESHOOTING 67 FIGURE 26 Vacuum pump does not turn on ...
Page 75: ...SECTION 9 TROUBLESHOOTING 71 FIGURE 31 Burner troubleshooting in manual mode ...
Page 77: ...SECTION 9 TROUBLESHOOTING 73 After 45 second prepurge burners do not light continued ...
Page 81: ...SECTION 9 TROUBLESHOOTING 77 FIGURE 36 Air Pressure Switch alarm ...
Page 83: ...SECTION 9 TROUBLESHOOTING 79 FIGURE 38 Repeater troubleshooting ...
Page 85: ...SECTION 9 TROUBLESHOOTING 81 BACnet MS TP troubleshooting continued ...
Page 109: ...SECTION 13 TOUCHSCREEN TREE 105 Touchscreen Tree Overview continued ...
Page 111: ...SECTION 13 TOUCHSCREEN TREE 107 FIGURE 47 Maintenance Unit FIGURE 48 Alarms ...
Page 113: ...SECTION 13 TOUCHSCREEN TREE 109 FIGURE 51 Configuration Zones FIGURE 52 Configuration Unit ...
Page 115: ...SECTION 13 TOUCHSCREEN TREE 111 FIGURE 55 Touchscreen System FIGURE 56 Touchscreen Setup ...
Page 118: ...ROBERTS GORDON CORAYVAC MODULATING HEATING CONTROL CONTROLLER INSTALLATION MANUAL 114 ...