Field Wiring; Maintenance; Terminal Descriptions - Daikin IOM 1177-1 Installation Operation & Maintenance

Installation

Field Wiring

Wiring between the sensor and the water source heat pump
unit for typical heating and cooling operation is shown in
Figure 3.
Figure 3: Field wiring
SmartSource™ Board
Terminal Block Label
Description
Terminal Label
Typical Wiring
Terminal Label
Description
Adjustable Cool/Warm Room Temperature Sensor with Occupancy Switch (Part No. 910121753)

Maintenance

Wipe the thermostat case as needed with a damp, water only
cotton cloth. Do not use any type of cleaner as it may damage
the buttons or labeling. Do not paint.

Terminal Descriptions

1 – Unit Status Indicator Input from the MicoTech III
SmartSource Unit Controller. (5VDC)
2 - Output Signal, Fan and Unit Mode (0 to 5VDC)
3 - Output Signal, Setpoint Adjustment
4 - Output Signal, Room Temp Thermistor Sensor. (10K ATP
Z curve, 10K-2)
5 - Ground or Neutral. Common Reference for All Signal
Terminals
E – Emergency Shutdown. (Terminal grounded when in
System "Off" mode)
U - Unoccupied Contact. (Terminal grounded when in
Unoccupied)
TB1-1 TB1-2 TB1-3
1 2 3
1 2 3
MicroTech ® III Board
Base Board
TB1-4 TB1-5
4 5
4 5
TB3-1 TB3-2
E U
E U
IOM 1177-1 / LIAF184 / Page 5 of 8