19
Thermostat
NOTE:
Suggest using thermostat TCONT824AS52DB.
Table 1. Wires of Outdoor Unit
NOTES:
• Y means Compressor control signal for the outdoor unit;
• B which is energized under the heating mode means 4-way valve control signal;
• D means defrosting signal;
• R means 24V AC power supply;
• C means 24V common;
• G means indoor unit fan signal for the indoor unit;
• W1 means heater control signal.
• For cooling only unit, there is no need to connect the B and D terminals.
• When outdoor defrosts, D of outdoor unit will send 24V signal.
WARNING
1.
High and low voltage wires should be routed through different openings of the electric
box cover.
2.
Use screws to tighten up the thermostat wires and power wiring of unit on the terminal
board.Wrong connection may lead to fire hazard.
3.
Ground the unit through connecting the ground wire.
4.
The units should comply with applicable local and national rules and regulations on power
consumption.
5.
When connecting the power wiring, make sure the phase sequence of the power supply
matches with the corresponding terminals, otherwise the compressor will get reversed and
operate abnormally.
Installation
