Trane LO - Manual (Page 40)

Tracer
®
ZN.010
and ZN.510
40 UNT-IOM-6
Tracer ® ZN.010 and ZN.510
The Tracer ® ZN.010
is a stand-alone
device that controls
fan-coils and cabinet
heaters. The Tracer ®
ZN.510 can be
stand-alone or utilize
peer-to-peer commu-
nications. 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.
Reference Figure 27.
Figure 27. The Tracer ZN.010 board.
Sequence of Operations
Off: Fan is off; control valves and fresh air damper option close. Low
air temperature detection option is still active.
Auto (Fan Cycling): Fan and fresh air damper cycle with control
valve option to maintain setpoint temperature. In cooling mode, the
fan cycles from off to medium and in heating mode it cycles from off
to low. When no heating or cooling is required, the fan is off and the
fresh air damper option closes.
Low/Med/High (Continuous Fan): Fan operates continuously while
control valve option cycles to maintain setpoint temperature. Fresh
air damper option is open.