Home > SMART TEMP > SMART TEMP SMT-131 Hotel Touchscreen Thermostat User Manual
SMART TEMP SMT-131 Hotel Touchscreen Thermostat User Manual
Take care to ensure excess wiring is not trapped between the cases half’s when closing - push
excess wires into the wall cavity. Never press on the LCD when closing the SMT-131 as it may
crack. Always press on the SMT-131 plastic case only.
DIP Switch Settings
Switch
Sw1
Sw2
Function
On
3 Fan Speed
Heat Pump
Off
1 Fan Speed
Heat Cool
Indoor Fan Mode
Equipment Type
HP Mode (Sw2= ON)
HC Mode (Sw2=OFF)
Sw3
Rev Valve Heat (B)
HE – Fan With Heat
Rev Valve Cool (O)
HG – No Fan In Heat
Sw4
Sw5
Sw6
Sw7
Sw8
2 / 4 pipe mode
Comp Protection Delay
Klixon Mode
2 pipe mode
5 Min Anti Cycle
On
4 pipe Mode
Immediate Comp start
Off
Ventilation Mode
Door Station (Optional)
Permitted
Fitted
Not Permitted
Door Station Not Used
Note: The SMT-131 reads the switch settings on power up only. If you change any DIP switch
settings you must power cycle before these changes will take effect.
It is expected that only qualified people will make adjustment to these dip switch settings.
Knowledge of the HVAC system under the control of the SMT-131 is essential prior to making
adjustment to these DIP switch settings.
Caution Incorrect adjustment of these DIP switch settings could cause HVAC
equipment damage. This would NOT be covered by warranty.
Wiring – HVAC Control
Terminal Designations
Terminal
C
Function
24V Neutral
R
24V Active - This voltage is switched back through the relays
Indoor Fan High Speed (NOT Used in Single fan speed mode - Sw 1 = OFF)
Indoor Fan Medium Speed (NOT Used in Single fan speed mode - Sw 1 = OFF)
Indoor Fan Low Speed (Used in single & three fan speed mode)
Compressor or Cool - (Based on Sw 2 setting)
Hi
Med
Low
Y
W - O/B
Reversing Valve or Heat - (Based on Sw 2 setting)
A1 – Cool
A2 – Heat
0-10V Output for Cooling (Typically used to control modulating valves)
0-10V Output for Heating (Typically used to control modulating valves)
0-10V Modulating Output for Indoor DC Fan
A3 – Fan
Com – 0V
0V terminal - Used for 0-10V, sensor or digital inputs ground reference
Modbus Data A
Modbus Data B
A
B
SI
Remote temperature sensor input (Remote / average / Modbus data use)
Digital (Switched input) for forced un-occupied or initiate doorbell function
Window Contact - Forces SMT-131 OFF if window open > 5 min (Adjustable)
PIR (Movement sensor) input for occupancy detection (see page 11)
DI
WC
DS
PIR
Page 5
| General | Details |
|---|---|
| Name | SMART TEMP SMT-131 Hotel Touchscreen Thermostat User Manual |
| Make | SMART TEMP |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.34 MB |
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