Trane UniTrane Installation Operation & Maintenance page 131

LEGEND
DEVICE
DESIG. DESCRIPTION
1K1-3 FAN STARTERS
1K4 ELECTRIC HEAT CONTACTOR
5HR1-2 HEATING ELEMENTS
565-8 LIMIT SWITCHES
3612 ELEC. HEAT AUTO LOCKOUT SWT
1T1 TRANSFORMER
1TB1 MAIN POWER TERMINAL BLOCK
1TB6 TERMINAL STRIP
1U1 THERMOSTAT MODULE
2U2 ZONE SENSOR MODULE
358 CONDENSATE OVERFLOW SW
151 DISCONNECT SW
159 FREEZE-STAT
481 FAN MOTOR
2L2 DAMPER ACTUATOR
3L1 MAIN COIL VALVE
3RT1 AUTO CHANGE TEMP SENSOR
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
UNT-IOM-6
®
Tracer ZN.010 Typical Wiring Diagram
LINE
NUMBER
25-26-27
30
11-12
11-12
30
21
5
23
24
36
3
38
9
32
28
34
DEVICE PREFIX
LOCATION GUIDE
AREA LOCATION
1 CONTROL PANEL
2 CONTROL END
3 PIPING END
4 FAN SECTION
5 COIL SECTION
6 CUSTOMER
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.
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