Orion System VCM-X E-BUS Component - Manual (Page 17)

VCM-X Component & Systems Wiring 17
System Installation
2. Connect all controllers in a daisy chain format using 2
conductor shielded cable to connect from the controller’s
3 wire communications connector to the MiniLink PD’s
3 wire communications connector marked “Local Loop”.
Using 18 gauge minimum, 2 wire cable for power, install
a 24 VAC, 8 VA minimum, transformer for the VCM-X
E-BUS Controller and wire from the transformer to the
VCM-X E-BUS Controller. Then wire from the VCM-X
E-BUS Controller’s 3 wire communications connector
to the MiniLink PD’s 3 wire communications connector
marked “Local Loop”. From either the MiniLink PD
connector marked “Local Loop” or the VCM-X E-BUS
Controller’s 3 wire communications connector, wire to
the fi rst VAV/Zone Controller’s 3 wire communications
terminal. Using 18 gauge minimum, 2 wire cable,
connect all of the associated Non-Modular VAV/Zone
Controllers in a daisy chain format using 18 gauge, 2
conductor shielded cable for communications.
3. Using 18 gauge minimum, 2 wire cable for power,
install a 24 VAC, 6 VA minimum, transformer for each
Non-Modular VAV/Zone Controller and wire from each
transformer to its VAV/Zone Controller. WattMaster
recommends you use a separate transformer for each
VAV/Zone Controller as stated. As an alternative, it
is allowable to have several Non-Modular VAV/Zone
Controllers share one properly sized transformer (6 VA
per VAV/Zone Controller). Warning: Polarity must be
observed on all of the VAV/Zone Controllers or damage
to the controllers will result. Use 18 gauge minimum, 2
wire cable for all power wiring and be sure to maintain
polarity on all boards.
4. The Modular System Manager can connect to any VAV/
Zone Controller or to the VCM-X E-BUS Controller.
Use the supplied pigtail cable which has a modular
connector for connection to the back of the Modular
System Manager and wire to any controller on the
communications local loop with communication wire
terminals. A separate transformer is required for the
Modular System Manager. Connect the 2 power wires
from the pigtail connector to a 24 VAC transformer. The
transformer should be sized to provide 6 VA minimum
power. The Communications setting must be set to Lo
Speed Network Mode.
5. The System Manager TS II utilizes a 3 wire
communication terminal block for connection to any
controller on the communications local loop that has
communication wire terminals. Since you are using
Modular VAV/Zone Controllers, you can use a modular
pigtail connector that has a modular connector on one
end and stripped wires on the other to connect the
System Manager TS II to the Power/Comm board or
one of the Modular VAV/Zone Controllers. A separate
transformer is required for the System Manager TS II. It
has a 2 wire 24 VAC terminal block for connection to a
24 VAC transformer. The transformer should be sized to
provide 6 VA minimum power and should be connected
using 18 gauge minimum wire. In the Settings Menu,
enter <63> for the System Manager Address.
6. The Modular Service Tool SD will connect to any of the
controllers using the supplied cable with DIN connectors
on both ends. The connection point on the controller
is located near the communications connector. The
Communications setting must be set to Lo Speed
Network Mode.
7. Before powering up the controllers, set each VAV/
Zone Controller’s board address to a unique number
from 1 through 58. Address the VCM-X E-BUS
Controller at 59. Set MiniLink PD’s address at 1.
Networked Multiple Loop Systems
See Figures 10-11, pages 29-30 of this manual for detailed Net-
worked Multiple Loop System wiring diagrams. Also see pages
9-10 for wire and transformer sizing information. You should review
these diagrams before attempting connections or powering up the
controller or interface devices.
Local Loops containing VCM-X E-BUS Controllers with
Modular VAV/Zone Controllers
1. Using 18 gauge minimum, 2 wire cable for power, install
a 24 VAC, 8 VA minimum, transformer for the VCM-X
E-BUS Controller and wire from the transformer to the
VCM-X E-BUS Controller. Using 18 gauge minimum, 2
wire cable for power, install a separate 24 VAC,
transformer sized for the required VA load for each
Power/Comm board on the loop and wire from each
transformer to its Power/Comm board. Observe polarity
on all boards.
2. Using 2 conductor shielded cable, connect from the
VCM-X E-BUS Controller’s 3 wire communications
connector to the MiniLink PD’s 3 wire communications
connector marked “Local Loop”. Use 18 gauge
minimum wire for power and observe polarity on
all boards.
3. Using a modular cable, connect from the MiniLink PD’S
modular connector marked “Local Loop” to the Power/
Comm board’s modular input connector.
4. Using modular cables, connect from the Power/Comm
board’s modular output connectors to the VAV/Zone
Controllers. The VAV/Zone Controllers connect together
using modular cables from each VAV/Zone Controller to
the next controller and/or to a Power/Comm board. A
maximum of 16 VAV/Zone Controllers are allowed per
Power/Comm board. If you have more than 16 VAV/
Zone Controllers, you will need multiple Power/Comm
boards. Each Power/Comm board must have its own 24
VAC transformer sized for the total number of VAV/
Zone Controllers connected to it.
Networked Multiple Loop