IM 1017-1 • MT 168 0-10 VDC/4-20mA THERMOSTAT 2
www.DaikinApplied.com
Figure 1: Mounting
Figure 2: Typical Wiring*
NOTE:
Note: * Specific models may have fewer connections.
Electrical Ratings
Table 1: Fan switch (terminals 1-4) line voltage
connections
Voltage
Rating
Inductive
Resistive
Amps
Pilot
Duty
Thermostatic
Switching
FLA
LRA
24 VAC
N.A.
N.A.
N.A.
24 VA
10 VA
120 VAC
5.8
34.8
6.0
125 VA
NA
240 VAC
2.9
17.4
5.0
125 VA
NA
277 VAC
2.4
14.4
4.2
125 VA
NA
Application Notes
1. When no changeover pipe sensor is used, the main
output controls cooling and the secondary output controls
heating.
2. The fan output, terminal 12, is energized whenever there
is a demand for heating or cooling. This output can be
connected to a relay that can be used to provide fan
cycling to terminal 1.
3. The changeover pipe sensor should be mounted on the
main coil input for water system operation and in the
main duct system for forced air operation.
4. The set point and operating mode will be retained on a
loss of power.
5. When using either a remote probe or pipe sensor, run
wiring away from any electrical motors or power wiring.
6. The auxiliary heat output supplies a 24 VAC signal with
call for heat. This output is shipped configured for staged
heat.
7. The thermostat is shipped with all dip switches in the
“ON” (closed) position.
8. The damper output is ON when mode is AUTO, HEAT or
COOL. Damper is OFF in set back.
Thermostat Operation
These thermostats are designed to control 0-10 VDC/4-0 mA
valves. These units may include a fan switch with one or more
fan speed selections.
Mode Button Operation
OFF:
All thermostat outputs are off, fan is still operational if
connected to a manual fan switch.
AUTO:
The thermostat automatically selects heating or cooling
mode depending upon the relationship of the setpoint and the
room temperature. The appropriate HEAT or COOL indicator
is enabled in addition to AUTO. A 3°F dead band is provided
to prevent short cycling between heating and cooling modes.
After changeover, the control points automatically shift so that
the heating OFF-point equals the set point temperature or the
cooling OFF-point equals the set point temperature.
COOL:
The thermostat operates as a cooling only thermostat.
The heating outputs are disabled.
HEAT:
The thermostat operates as a heating-only thermostat.
The cooling outputs are disabled.
LO
W
VO
LT
AG
E
CO
N
NE
C
TI
ON
S
LI
NE
VOL
TA
GE
CO
N
N
ECTI
ON
S
FAN
L2 OR NEUTRAL
OPTIONAL REMOTE PROBE
OPTIONAL PIPE SENSOR
L1 (HOT)
LO FAN
MED FAN
HIGH FAN
OR SINGLE SPEED
24 VAC 1
24 VAC 2
SETBACK
24 VAC
XFMR
MAIN 1
0-10 VDC
OUTPUT
SECONDARY
0-10 VDC
1 OUTPUT
FAN
OUTPUT
AUXILIARY
HEAT
OUTPUT
DAMPER
OUTPUT
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
