VariTrac Installation
The drawing shows the VariTrac system you will install in this workshop. you will
complete the power wiring and communications link. Then startup the system.
X
Install VariTrac UCMs and digital zone sensor
Reference: VariTrac Installation Manual (VAV-SVN03A-EN), Pages 23 through 27
1. Set the address DIP switches on each of the UCM boards to addresses 1, 2, and 3.
2. Connect UCM Comm4 wiring to terminalsTB2-1 and TB2-2, TB2-3 and TB-2-4 on each UCM
using the pre-configured wiring harness provided.
Important! Polarity must be observed at comm link connections on all devices that share the
Comm4 link.
3. Connect 24Vac power to terminals TB1-1 (24V) and TB-2 (ground) on each UCM using the
pre-configured wiring harness provided.
03- VariTrac Installation Workshop.doc
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