Smart temp SMT-24 User manual

Operation
On Off switch
The system will operate only when this switch is in the “ON” position. When heating or cooling is not
required turn this switch to the “Off” position.
Heat Cool Auto switch.
Select “Heat” when heating only is required or select “Cool” when cooling only is required. In “Auto”
Mode the thermostat will automatically select heating or cooling mode depending on the current
room temperature and the set (or desired) Temperature.
Fan Switch
In the “Auto” mode the fan will only operate while the heating or cooling is running. The fan will stop
operating when the desired temperature has been reached and heating or cooling is no longer
required . Select “on” when continuous fan operation is required regardless of the need for heating
or cooling .
To Set Temperature.
The thermostat indicates the current room temperature on the illuminated display. When rotating
the temperature select switch the display will flash and indicated the SET or Desired temperature.
By turning the select switch clockwise or counterclockwise the desired or set temperature will
increase or decrease. After a few moments of not moving the temperature adjustment the display
will return to indicate room the current room temperature.
The thermostat will control the heating or cooling equipment and maintain the room temperature
to within ±1.5 deg C of the set or desired temperature.
System LED
This Green LED will illuminate when the thermostat requires the cooling or heating unit to operate.
Model SMT-24
24 Volt Heat Pump or Heat Cool Thermostat
Two Stage Heating One Stage Cooling
Auto Changeover - Non Programmable
Smart Temp
Thermostats
TM

Jumper Table
Jumper
Position JP1 JP3 JP4 JP5 JP6
Internal
Sensor
External
Sensor
Rev Valve
Energize “O”
(cooling)
Rev Valve
Energize “B”
(heating)
Fan on
with
Heat Call
Fan on with
system
Heat
Pump
Heat
Cool
(Heat Pump)
(Gas Heat)
Display
Deg F
Display
Deg C
JP1 Internal / External sensor select.
JP2 Compressor Delay Select.
JP3 Heat pump or Heat Cool Select.
JP4 Fan Mode Select.
JP5 R/Valve energise select.
JP6 Display format (deg C or F).
Optional Remote
Sensor Connections
(P/n SMT- Sens)
Optional Remote
Sensor Connections
(P/n SMT- Sens)
Fan Switch
Mode Switch Off / On Switch
Factory Fitted link.
Remove when using
a two transformer
System
Temperature
Adjustment
JP1
JP2
JP3
JP4
JP5
JP6
W2 Y1 C RH RCG W1
/
BO
Heat / Cool Connections
W2 Heat 2
GFan
W1/BO Heat 1
Y1 Cool
C 24v Neutral
RH 24v Active Heat
RC 24v Active Cool
Heat Pump Connections
W2 Aux Heat
GFan
W1/BO Reversing Valve
Y1 Compressor
C 24v Neutral
RH 24v Active Heat
RC 24v Active Cool
Compressor
Cool
Cool
24N
Fan
Fan
Reversing Valve
Heat ( Stage2)
Heat ( Stage1)
24V Active
24V Active
RH
RH
RC
RC
G
G
C
C
Y1
Y1
W2
W2
B/O
W1
24V Neutral
24V Neutral
Aux. Heat
SMT-24a
Thermostat
SMT-24a
Thermostat
Typical Heat Pump System
Typical Gas Heat with Add on Cooling System
24 Volt
Cooling Relay
Smart Temp
Thermostats
TM
Typical Connections
106052-1 RevA
Limited One Year Warranty
Jumper On =No time Delay
Jp-2 OFF = 3 Min Time Delay
Smart Temp
Australia
TM
Smart Temp Australia Pty Ltd
19 Indra Road Blackburn South 3130
Phone:[phone] Fax [phone]
www.smart-temp.com.au