84 UNT-SVX07B-EN
Start-Up
The unit-mounted option operates on line voltage. The wall-mounted option is low-voltage and has
three 24-volt relays using a factory-wired transformer and relays to control the fan motor.
Tracer ZN010 & ZN510
Tracer ZN010 is a stand-alone device that controls fan-coils and cabinet heaters. Tracer ZN510 can
be stand-alone or use peer-to-peer communications.
The controller is easily accessible in the control end panel for service. The control end panel is on
the end of the unit opposite the piping. See Figure 23.
Fan Mode Switch Operation
Off
Fan is turned off, two-position damper option spring-returns closed.
Hi, Med, Lo
Fan runs continuously at the selected speed. The two-position damper option opens to an
adjustable mechanical stop position.
Tracer ZN010 & ZN510 Operation
Off
Fan is off; control valves and fresh air damper option close. Low air temperature detection option
is still active.
Figure 22. Fan speed switch
Figure 23. Tracer ZN010 board
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