Thermostat Connections; 7-Day Programmable Electronic Thermostat; Non-Programmable Electronic Thermostat; Optional Remote Sensor (P/N 66720401) - Daikin Enfinity VFC Installation And Maintenance Manual

7-Day Programmable Electronic
Thermostat (P/N 668375301)
MicroTech III Unit Control Board
Low Voltage Terminal Strip (Circuit 1)
C
24VAC Common
Tenant Override O
Fan G
Cool 1 Y1
Cool 2 Y2
Heat 1 W1
W2
Heat 2
Alarm Output A
24VAC
Notes: Includes Thermostat and Wall Plate.
Refer to the installation, operation & application
guide (LIA265) for thermostat 668375301.
Non-Programmable Electronic
Thermostat (P/N 668375401)
MicroTech III Unit Control Board
Low Voltage Terminal Strip (Circuit 1)
24VAC Common
Tenant Override
Fan
Cool 1
Cool 2
Heat 1
Heat 2
Alarm Output
24VAC
Note: Includes Thermostat and Wall Plate.
Refer to the installation, operation & application
guide (LIA266) for thermostat 668375401.
*When remote reset of a lockout condition is re-
quired at the wall thermostat, it will be necessary
to utilize a conductor between terminal "O" on the
wall thermostat to terminal "O" on the MicroTech
III unit controller (non-programmable stat only).
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+ R
R
C
O
G
R
+
Y1
Y2
W1
W2
A
R
O
*Override (Optional)
Optional Remote Sensor (P/N
66720401)
1 . Remove cover from remote sensor housing.
2 . Select an appropriate location for mounting the
remote sensor.
3 . Mount remote sensor unit using hardware provided.
4 . Install two strand shielded wire between remote
sensor and thermostat. Shielded wire must be used.
Note: Do not run remote sensor wire in conduit with
other wires.
• Wire 1 should run between the S1 terminal on
the thermostat and the S1 terminal on the remote
sensor
•
Wire 2 should run between the S2 terminal on
the thermostat and the S2 terminal on the remote
sensor
• Connect the shielding of the wire to the S2 terminal
on the thermostat
5 . Disable the main sensor (R12) on the thermostat by
cutting it from the circuit board.
Figure 24: Optional Remote Sensor Wiring
Thermostat
S1 S2
Cut R12 from
circuit board
29 Enfinity Vertical Water Source Heat Pumps • IM 930-6
t C
herMostat onneCtions
Remote Sensor
S1 S2
Wire 2
Wire 1