7-Day Programmable Room Thermostat
Specification & Installation Instructions
TRO24T4XYZ3-ESL-121002.doc
1
VAV Thermostat
Technical Data
TRO24T4XYZ3
Inputs
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
Outputs
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
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
2
[18 AWG] minimum
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
B
C
D
E
ºF / º C
A = 2.85” | 73mm
B = 4.85” | 123mm
C = 1.00” | 24mm
D = 2.36” | 60mm
E = 3.27” | 83mm
Interface
C
F
%RH
MO TU WE TH FR SA SU
AM PM
..
..
Symbols on display
Cooling ON
33,66,100% output
A: Automatic
Menu set-up Lock
Morning
Heating ON
33,66,100% output
A: Automatic
Programming mode
(Technician setting)
Day
Alarm status
C
or
F
ºC: Celsius scale
ºF: Fahrenheit scale
Evening
MO TU WE TH FR SA SU
Day of the
week
AM PM
Morning
Afternoon
Night
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 K
Ω
)
Change over by contact or external temperature sensor
Pressure sensor input / air flow program
Selectable proportional control band and dead band
Anti-freeze
protection
TRO24T4XYZ3
