Neptronic TRO24T4XYZ3 Specification & Installation Instructions

VAV Thermostat

Technical Data

Inputs
Outputs
Power supply 22 to 26Vac 50/60Hz
Power consumption 1VA
Set point range 10ºC to 40ºC [50ºF to 104ºF]
External sensor range -40ºC to 100ºC [-40ºF to 212ºF]
Control accuracy Temperature: ±0.4ºC [0.8ºF]
Proportional band 0.5ºC to 5ºC [1ºF to 10ºF] adjustable
Electrical connection 0.8 mm
Operating temperature 0ºC to 50ºC [32ºF to 122ºF]
Storage temperature -30ºC to 50ºC [-22ºF to 122ºF]
Relative Humidity 5 to 95% non condensing
Degree of protection of housing IP 30 (EN 60529)
Weight 160 g. [0.36 lb]
Dimensions
A = 2.85" | 73mm
B = 4.85" | 123mm
C = 1.00" | 24mm
D = 2.36" | 60mm
E = 3.27" | 83mm
Interface
AM PM
. . . .
MO TU WE TH FR SA SU
%RH
C
F
TRO24T4XYZ3-ESL-121002.doc
Features:

Attractive modern look with large LCD and backlight

Icon-driven information and 1 line of text information

Selectable analog and digital outputs

Precise temperature control with programmable PI function

Selectable Fahrenheit or Celsius scale

7-day schedule

2 or 4 daily independent time schedule and temperatures

AM/PM or 24-hour time display

Scheduling set point override

Multi level lockable access menu

Lockable set point

Selectable internal or external temperature sensor (10 KΩ)

Change over by contact or external temperature sensor

Pressure sensor input / air flow program

Selectable proportional control band and dead band

Anti-freeze protection
3 Universal analog inputs: 0-10Vdc, Thermistor (10k Type III), or digital input (dry contact)
Available for external temperature sensor, change over, night set back or pressure sensor
2 Analog outputs: 0-10Vdc or 2-10Vdc selectable (2mA max.)
4 TRIAC outputs: on/off, pulse 0 or 24Vac (250 mA max.),
or 2 Floating outputs
2
[18 AWG] minimum
B E
D
ºF / º C
A C
Symbols on display
Cooling ON
33,66,100% output
A: Automatic
Heating ON
33,66,100% output
A: Automatic
Alarm status
Day of the
MO TU WE TH FR SA SU
week
7-Day Programmable Room Thermostat
Specification & Installation Instructions
TRO24T4XYZ3
Menu set-up Lock
Programming mode
(Technician setting)
ºC: Celsius scale
C F
ºF: Fahrenheit scale
or
Morning
AM PM
Afternoon
TRO24T4XYZ3
Morning
Day
Evening
Night
1