CH16 with ME Air Handler with 25Kw and 3H2C TStat

T-Stat Notes:

1. All E/Aux/W2 signals must go to the CH16 first on “W”
2. You may need to put a jumper in E/Aux/W2 at the T-Stat (follow T-Stat manufacture manual)
   • The CH16 will energize backup heat on “W1 OUT”
   • After 15mins of backup heat, the CH16 will engage “W2 OUT”
   • Do NOT jumper “W1 OUT” and “W2 OUT”

Blower Notes:

• If 208V is used – Rewire transformer accordingly

Adjust blower motor speed to provide airflow within the minimum and maximum limits approved for indoor coil, electric heat and outdoor unit. Make speed tap adjustments at the motor terminal block. (refer to airflow data listed) Connect motor wires to motor speed tap receptacle for speed desired.

The standard ECM motor operates when a 24 VAC signal is sent to any of its 5-speed taps. If simultaneous 24 VAC inputs are present, the motor operates at the highest speed tap that is energized.

• The Cooling/HP (Y1) speed is supplied by the thermostat “G” signal
• The electric heat kit wire (BLACK) for the heating speed should be moved to the appropriate speed tap according to the Table.
• If electric heat requires speed tap 5, then Cooling/HP heating is tap 4. TWO conductors can not be on the same blower speed tap
• If a lower speed is desired for fan only operation (lower than a heating or cooling fan speed), connect the factory “RED” wire into the lowest setting desired and Field install a wire from low voltage “Y1,” and connect it to the motor speed tap desired for Cooling/HP heating fan speed.
• “Y2” Speed is supplied by the field installed “Y2 OUT” wire