14
VTR73xxA Terminal Equipment Controller Terminal Identification and Function
Terminal Identification All VTR73xxA5x00(X) Terminal Equipment Controller
Terminal 3 Tx – Rx Communication
Terminal 4 Power Hot 7.0 Vdc
Terminal 5 Power Common
Terminal 13 BI 1 ( Configurable )
Terminal 14 Scom
Terminal 15 BI 2 ( Configurable )
VC3xxxX Relay Pack Terminal & Wire Identification and Function
\
VC3500E5000 VC3504E5000 VC3400E5000 VC3404E5000 VC3300E5000
Slave Fan Unit
Low Voltage Terminals
No local inputs Low Voltage inputs No local inputs Low Voltage inputs No local inputs
1
Tx / Rx Tx / Rx Tx / Rx Tx / Rx Tx / Rx
2
7 Vdc 7 Vdc 7 Vdc 7 Vdc
7 Vdc
3
Com Com Com Com
Com
4
RUI 1 RUI 1
5
Scom Scom
6
RBI 2 RBI 2
7
SS SS
8
RS RS
9
Heat - Heat -
10
Heat + Heat +
Line Voltage Connections
Power supply
- 90 to 277 Vac universal all models
- Black Hot L1 Power Vac ( Switches: Brown, Blue, Red & Yellow )
- White Neutral Power Vac
Fan line voltage contact
Wire connections
½ HP Maximum
3 Fan Speed Control
Wires
Brown, Blue, Red
3 Fan Speed Control
Wires
Brown, Blue, Red
3 Fan Speed Control
Wires
Brown, Blue, Red
3 Fan Speed Control
Wires
Brown, Blue, Red
3 Fan Speed Control
Wires
Brown, Blue, Red
Valve line voltage contact
output
Yellow wire connection
10A maximum
4 Pipes Cool output
Or
2 Pipes Heat / Cool
output
4 Pipes Cool output
Or
2 Pipes Heat / Cool
output
2 Pipes Heat / Cool
output
2 Pipes Heat / Cool
output
N/A
Valve line voltage isolated
contact output
2 x Orange wires
connections 10A maximum
4 Pipes Heat output
Or
2 Pipes reheat
output
4 Pipes Heat output
Or
2 Pipes reheat
output
N/A N/A N/A
VTR73xxA Terminal Equipment Controller Power & Communication Wiring to VC3xxxX Relay Pack
3 - Tx / Rx
4 - 7 Vdc Power Hot
5 - Power Common
To other VC3xxxX
Relay Pack
VC3504E
Relay Pack
VC3300E
Relay Pack
VTR73xxA
Terminal Controller
1 - Tx / Rx
2 - 7 Vdc Power Hot
3 - Power Common
1 - Tx / Rx
2 - 7 Vdc Power Hot
3 - Power Common
Only ONE VC3xxxX Relay Pack with remote monitoring inputs can be used under a single VTR73xxA Controller. All other slave units
must me either VC3xxxX Relay Pack(s) WITHOUT remote inputs. A maximum of 10 VC3xxxX Relay Packs can be used for a single
VTR73xxA Terminal Equipment Controller.
From the VTR73xxA Terminal Equipment Controller to the first VC3xxxX Relay Pack
o Existing or new field wires
o 3 minimum required 14-22 Ga Solid or Stranded. Shield not necessary.
From the first VC3xxxX Relay Pack connected to the controller to all other VC3xxxX Relay Pack(s)
o Existing or new field wires
o 2 minimum required 14-22 Ga Solid or Stranded. Shield not necessary.
o Connect only 1 Power Common & 2 Tx-Rx Communication
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