Trane LO - Manual (Page 131)

UNT-IOM-6 131
Tracer ® ZN.010 Typical Wiring Diagram
For Reference Only:
This schematic shows typical wiring of a fan-coil. It is not intended for a basis of design or for equipment installation
purposes in the field. For an as-built schematic specific to a particular unit, please see the ship-with schematic for that
specific unit or contact your local Trane representative.
Two-pipe autochangeover with electric heat
Two-position N/O control valve
Electric heat contactor
Two-position N/C fresh air damper actuator
EWT sensor
Electric heat limit switch(es)
Condensate overflow detection
Low temperature detection
Wall mounted fan mode switch, setpoint dial, zone temperature sensor, and unit mounted disconnect switch
NOTES:
1. UNLESS OTHERWISE NOTED, ALL
SWITCHES ARE SHOWN AT 25 C (77 F),
AT ATMOSPHERIC PRESSURE, AT 50%
RELATIVE HUMIDITY, WITH ALL UTILITIES
TURNED OFF, AND AFTER A NORMAL
SHUTDOWN HAS OCCURRED.
2. DASHED LINES INDICATE
RECOMMENDED FIELD WIRING BY
OTHERS. DASHED LINE ENCLOSURES
AND/OR DASHED DEVICE OUTLINES
INDICATE COMPONENTS PROVIDED BY
THE FIELD. SOLID LINES INDICATE
WIRING BY TRANE CO.
3. NUMBERS ALONG THE RIGHT SIDE OF
THE SCHEMATIC DESIGNATE THE
LOCATION OF CONTACTS BY LINE
NUMBER. AN UNDERLINED NUMBER
INDICATES A NORMALLY CLOSED
CONTACT.
4. ALL FIELD WIRING MUST BE IN
ACCORDANCE WITH THE NATIONAL
ELECTRIC CODE (NEC), STATE AND
LOCAL REQUIREMENTS.
LEGEND
DEVICE LINE
DESIG. DESCRIPTION NUMBER
1K1-3 FAN STARTERS 25-26-27
1K4 ELECTRIC HEAT CONTACTOR 30
5HR1-2 HEATING ELEMENTS 11-12
565-8 LIMIT SWITCHES 11-12
3612 ELEC. HEAT AUTO LOCKOUT SWT 30
1T1 TRANSFORMER 21
1TB1 MAIN POWER TERMINAL BLOCK 5
1TB6 TERMINAL STRIP
1U1 THERMOSTAT MODULE 23
2U2 ZONE SENSOR MODULE 24
358 CONDENSATE OVERFLOW SW 36
151 DISCONNECT SW 3
159 FREEZE-STAT 38
481 FAN MOTOR 9
2L2 DAMPER ACTUATOR 32
3L1 MAIN COIL VALVE 28
3RT1 AUTO CHANGE TEMP SENSOR 34
DEVICE PREFIX
LOCATION GUIDE
AREA LOCATION
1 CONTROL PANEL
2 CONTROL END
3 PIPING END
4 FAN SECTION
5 COIL SECTION
6 CUSTOMER