| DELAY ON MAKE TIMING | ||
.05 minutes | (30 seconds) | DOB | = 123 seconds DOM |
1.0 minutes | (60 seconds) | DOB | = 126 seconds DOM |
2.0 minutes | (120 Seconds) | DOB | = 132 seconds DOM |
3.0 minutes | (180 seconds) | DOB | = 138 seconds DOM |
4.0 minutes | (240 seconds) | DOB | = 144 seconds DOM |
5.0 minutes | (300 seconds) | DOB | = 150 seconds DOM |
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OPTIONAL CFM | SERVICE HINTS |
All models covered by this Manual are factory set to operate at rated CFM levels as shown in Table 4. Rated CFM is required for ducted applications for maximum performance ratings.
For free blow applications where Full Load Rated CFM is undesirable due to sound levels, there is an optional CFM that can be obtained
For Full Load Optional CFM:
1.Disconnect all power to the unit. Failure to do so may result in damage to the motor.
2.Open hinged return air grille service panel.
3.Open control panel cover.
4.Locate low voltage terminal strip and purple wire with white trace that connects to terminal “Y2”. Disconnect this wire from terminal “Y2” and tape off end.
5.Reverse steps to reassemble.
IMPORTANT INSTALLER NOTE
For improved start up performance, wash the indoor coil with dishwashing detergent.
PHASE MONITOR
All units with three phase scroll compressors are equipped with a three phase line monitor to prevent compressor damage due to phase reversal.
The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor and phases are correct, the green LED will light and contactor will energize. If phases are reversed, the red fault LED will be lit and compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply leads to the unit. Do not reverse any of the unit factory wires as damage may occur.
1.Caution user to maintain clean air filters at all times. Also, not to needlessly close off supply air registers. This may reduce airflow through the system which shortens equipment service life as well as increasing operating costs and noise levels.
2.Check all power fuses or circuit breakers to be sure that they are the correct rating.
3.The heat pump wall thermostats perform multiple functions. Be sure that all function switches are correctly set for the desired operating mode before trying to diagnose any reported service problems.
SEQUENCE OF OPERATION
COOLING – A 24V solenoid coil on the reversing valve controls the cooling cycle operation. There are two different thermostat options. 1.) Allows for “Auto” changeover from cycle to cycle. 2.) The other (Manual changeover). The Auto changeover mode will cause the reversing valve solenoid to cycle with each cooling call and may cause a “swooshing sound” with refrigerant equalization at the end of each cycle.
On a call for Part Load Cooling by the thermostat, it completes a circuit from “R” to “Y1”, “O” and “G” for part load cooling. “Y1” starts the compressor, “O” energizes the reversing valve and “G” starts the indoor blower.
On a call for Full Load Cooling by the thermostat, it completes the same as Part Load Cooling above, but also includes a signal to “Y2”. Signal “Y2” energizes the staging solenoid on the side of the compressor and the signal also goes to the indoor blower to
HEATING – On a call for Part Load Heating by the thermostat, it completes a circuit from “R” to “Y1” and “G”. “Y1” starts the compressor and “G” starts the indoor blower.
On a call for Full Load Heating by the thermostat, it completes the same as Part Load Heating above, but also includes a signal to “Y2”. Signal “Y2” energizes the staging solenoid on the side of the compressor and the signal also goes to the indoor blower to
Manual | |
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