Trane LO - Manual (Page 132)

132 UNT-IOM-6
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.
Four-pipe
Two-position N/C cooling control valve
Two-position N/O heating control valve
Two-position N/C fresh air damper actuator
Condensate overflow detection
Low temperature detection
Unit mounted fan mode switch,
Wall mounted setpoint dial and zone temperature sensor
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
1T1 TRANSFORMER 21
1TB6 TERMINAL STRIP
1U1 THERMOSTAT MODULE 23
358 CONDENSATE OVERFLOW 36
151 DISCONNECT SW 3
159 LOWLIMIT
2U2 ZONE SENSOR MODULE 24
FAN SWITCH 28
481 FAN MOTOR 9
2L2 DAMPER ACTUATOR 32
3L1 MAIN COIL VALVE 28
3L3 HEATING COIL VALVE 30
DEVICE PREFIX
LOCATION GUIDE
AREA LOCATION
1 CONTROL PANEL
2 CONTROL END
3 PIPING END
4 FAN SECTION
5 COIL SECTION
6 CUSTOMER
Tracer ® ZN.010 Typical Wiring Diagram