Setup; Network Wiring; Identity Code - Crestron CHV-TSTAT Operation And Installation Manual

Crestron CHV-TSTAT and CHV-THSTAT

Setup

Operations and Installation Guide - DOC. 8163

Network Wiring

NOTE: When installing network wiring, refer to the latest revision of the wiring
diagram(s) appropriate for your specific system configuration, available from the
Downloads | Product Manuals | Software and Wiring Diagrams section of the Crestron
website (www.crestron.com).
When calculating the wire gauge for a particular Cresnet run, the length of the run and
the power factor of each network unit to be connected must be taken into
consideration. If Cresnet units are to be daisy-chained on the run, the power factor of
each unit to be daisy-chained must be added together to determine the power factor of
the entire chain. If the unit is a home-run from a Crestron system power supply
network port, the power factor of that unit is the power factor of the entire run. The
length of the run in feet and the power factor of the run should be used in the
following resistance equation to calculate the value on the right side of the equation.
Resistance Equation
40,000
R < L x PF
The required wire gauge should be chosen such that the resistance value is less than
the value calculated in the resistance equation. Refer to the table below.
Wire Gauge Values
RESISTANCE (R)
4
6
10
15
13
8.7
NOTE: All Cresnet wiring must consist of two twisted-pairs. One twisted pair is the
+24V conductor and the GND conductor and the other twisted pair is the Y conductor
and the Z conductor.
NOTE: For larger networks (i.e., greater than 28 network devices), it may be
necessary to add a Cresnet Hub/Repeater to maintain signal quality throughout the
network. Also, for networks with lengthy cable runs, it may be desirable to add a
hub/repeater after only 20 network devices.

Identity Code

Every equipment and user interface within the network requires a unique Cresnet
identity code (NET ID). These codes are assigned a two-digit hexadecimal number
from 03 to FE. The NET ID of the unit must match the NET ID specified in the
SIMPL Windows or D3 Pro program. Refer to "Setting the Net ID in Device Settings"
on page 22 for an example of the SIMPL Windows procedure.
Where: R = Resistance (refer to table below).
L = Length of run (or chain) in feet.
PF = Power factor of entire run (or chain).
WIRE GAUGE
16
18
20
22
Doubled CAT5
Tripled CAT5
Thermostats: CHV-TSTAT and CHV-THSTAT • 7
Thermostats