SECTION 5: C
OMMUNICATIONS
47
5.9 The REP485 Repeater (P/N 10060156)
The REP485 is a repeater that boosts communica-
tion signals over lengthy runs of wire. Place a
repeater after every 31 devices or after 2000’ (609.6
m) (whichever is reached first) and at each branch of
a hybrid network.
repeater begins a new network segment. You can
wire a maximum of four repeaters in series. Refer to
the sample network configurations using repeaters
(Daisy and Hybrid configuration sample
communications wire length is above 4000' (1219 m),
a repeater must be used to extend the signal. The
repeater can also be used to install in different meth-
ods:
• To extend communications beyond the standard
4000' (1219 m) limitation.
.
• To add parallel branches of ROBERTS GOR-
DON
®
CORAYVAC
®
Modulating Heating Control
communications bus wiring.
• To add more than 31 controllers to the network
chain, the repeater counts as the last controller in
the segment and the first controller in the next
segment.
Note:
The maximum number of ROBERTS GOR-
DON
®
CORAYVAC
®
Modulating Heating Controls
that can be installed without a repeater is 32.
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 ...