OPERATION MODES
19
Figure 2 – Diagnostics Exploded View
OPERATION - COOL MODE
1.
With no calls the system is in Standby.
2.
The Controller is in Cool Mode with an O signal from the Thermostat and the BLUE COOL Mode LED is lit. The reversing valve is
also energized in cooling. Any change in the O signal causes an Anti-Short Cycle before the RV output is energized or de-
energized, eliminating unnecessary reversing valve cycles. The outdoor fan output (ODF1) is energized any time there is a call
for Cooling. Cool Mode is not allowed below 50°F (10°C).
3.
With an O signal, when the Y1 signal is energized, the system is in Cool Mode 1. It will energize the 1
st
stage of the Primary
Compressor; the Primary Compressor is operating with 1 cylinder. When the Y2 signal is energized, the system is in Cool Mode
2. It will energize the 2
nd
stage of the Primary Compressor; the Primary Compressor is operating with 2 cylinders. With the Y2
signal energized, the Y2Out output sends a 24VAC signal to the indoor air handler; this signal switches the indoor fan to high
speed.
4.
The Booster Compressor is not allowed to operate in the Cool Mode. In the Cool Mode, the operation does not move down
from C2 to C1; this is the same for the Heat Mode. The system operates in Cooling Mode 2 until the thermostat call is satisfied;
this is to reduce the number of compressor cycles that could occur.
Cool Modes
Thermostat Calls
AMB ≥ 50°F (10°C)
Controller Indicator
Y1 & O
Primary 1-Cylinder
C1
Y2 & O
Primary 2-Cylinders/Y2Out
C2
Table 2: Cool Modes and Y2Out: Y1/Y2 & O vs. Ambient
OPERATION - HEAT MODE
Note: During Dual Fuel mode the transformer in the outdoor unit may need to be relocated into the indoor hot air furnaces.
1.
With no calls the system is in Standby.
2.
The Controller is in Heat Mode without an O signal from the Thermostat and the Yellow HEAT / EH Mode LED is lit. The reversing
valve is de-energized in heating. When there is a Call for Heat, Y1 and/or Y2 are energized, the outputs that are associated with
the call and the ambient BIN condition are described in
Table 3
and
Table 4.
The Y2Out output sends a 24VAC signal to the
indoor air handler; this signal switches the indoor fan to high speed.
Содержание Acadia i Series
Страница 44: ...APPENDIX B WIRING DIAGRAMS 43 Figure 8 Line Voltage Wiring...
Страница 45: ...APPENDIX B WIRING DIAGRAMS 44 Figure 9 Hallowell Controller Wiring...
Страница 47: ...APPENDIX B WIRING DIAGRAMS 46 Figure 12 Entire Low Voltage Wiring with Electric Back Up...
Страница 48: ...APPENDIX B WIRING DIAGRAMS 47 Figure 13 Entire Low Voltage Wiring with Dual Fuel Back Up...
Страница 54: ...APPENDIX D ACADIA OUTDOOR UNIT MOUNTING 53 Figure 15 Typical Acadia Mounting...
Страница 56: ...APPENDIX E ACADIA COMPONENTS 55 Figure 17 Acadia Components...
Страница 57: ...APPENDIX F EWC ZONE CONTROL 56 Figure 18 Acadia with EWC Zone Control Wiring...
