58
2SP H/C (2 Speed Heat/Cool) Fan Operation
FAN TYPE = 2SP H/C is not used on 48GC units.
3 Speed Fan Operation (single phase units only)
The W7220 controller does not actually control the fan speed
or the heat output of the unit, and only uses this information to
help determine the damper position. On single phase units, the
unit control board (UCB) will reduce the fan speed during
heating when the configured fan speed is set outside the opti-
mized heating speed window. If the job site application forces
this reduction in fan speed during heat, the economizer FAN
TYPE must be set to keep the appropriate outside air intake.
On single phase 48GC 3 to 5 ton units, if reduced the heating
fan speed is lower than the high cooling speed and higher than
the low cooling speed, hence the medium speed name. The
economizer FAN TYPE needs to be set to 3SPEED (3 speed).
This indicates that the heating fan speed is between the Low
cool/vent fan speed and the High cool speed. Refer to Table 24
for economizer operation.
Table 24 — Economizer Operation - FAN TYPE = 3SPEED
*With stage 3 delay (STG3 DLY) in Advanced setup, COOL Y2-OUT will be turned ON after the delay time specified.
N/A = Not applicable
INPUTS
OUTPUTS
DEMAND
CONTROLLED
VENTILATION
(DCV)
OUTSIDE AIR
GOOD TO
ECONOMIZE
W
(HEAT ON)
COOL
Y1-IN
COOL
Y2-IN
COOL
Y1-OUT
COOL
Y2-OUT
FAN SPEED
(reference
only)
DAMPER POSITION
OCCUPIED
UNOCCUPIED
NONE
NO
ON
N/A
N/A
OFF
OFF
MEDIUM
MIN POS M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
MIN POS L
Closed
OFF
ON
OFF
ON
OFF
LOW
MIN POS L
Closed
OFF
ON
ON
ON
ON
HIGH
MIN POS H
Closed
YES
ON
N/A
N/A
OFF
OFF
MEDIUM
MIN POS M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
MIN POS L
Closed
OFF
ON
OFF
OFF
OFF
LOW
MIN POS L to
Full Open
Closed to
Full Open
OFF
ON
ON
ON
OFF*
HIGH
MIN POS H to
Full Open
Closed to
Full Open
Below CO
2
Set
NO
ON
N/A
N/A
OFF
OFF
MEDIUM
VENTMIN M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
VENTMIN L
Closed
OFF
ON
OFF
ON
OFF
LOW
VENTMIN L
Closed
OFF
ON
ON
ON
ON
HIGH
VENTMIN H
Closed
YES
ON
N/A
N/A
OFF
OFF
MEDIUM
VENTMIN M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
VENTMIN L
Closed
OFF
ON
OFF
OFF
OFF
LOW
VENTMIN L to
Full Open
Closed to
Full Open
OFF
ON
ON
ON
OFF*
HIGH
VENTMIN H to
Full Open
Closed to
Full Open
Above CO
2
Set
NO
ON
N/A
N/A
OFF
OFF
MEDIUM
VENTMIN M to
VENTMAX M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
VENTMIN L to
VENTMAX L
Closed
OFF
ON
OFF
ON
OFF
LOW
VENTMIN L to
VENTMAX L
Closed
OFF
ON
ON
ON
ON
HIGH
VENTMIN H to
VENTMAX H
Closed
YES
ON
N/A
N/A
OFF
OFF
MEDIUM
VENTMIN M to
VENTMAX M
Closed
OFF
OFF
OFF
OFF
OFF
LOW
VENTMIN L to
VENTMAX L
Closed
OFF
ON
OFF
OFF
OFF*
LOW
VENTMIN L to
Full Open
Closed to
Full Open
OFF
ON
ON
ON
OFF*
HIGH
VENTMIN H to
Full Open
Closed to
Full Open
Summary of Contents for 48GC04
Page 18: ...18 Fig 31 Condenser Fan Assembly Screw Pattern Sequence 1 2 3 4 5 NO SCREW Blank Tab...
Page 33: ...33 Fig 57 Integrated Gas Control IGC Board RED LED STATUS...
Page 96: ...96 APPENDIX D WIRING DIAGRAMS Fig E 48GC 04 06 208 230 1 60 Unit with RTU Open Controller...
Page 97: ...97 APPENDIX D WIRING DIAGRAMS Fig F 48GC 04 06 208 230 3 60 Unit with RTU Open Controller...
Page 98: ...98 APPENDIX D WIRING DIAGRAMS Fig G 48GC 04 06 460 575 3 60 Unit with RTU Open Controller...
Page 99: ...99 APPENDIX D WIRING DIAGRAMS Fig H 48GC 04 06 Power Wiring Diagram 208 230 1 60...
Page 100: ...100 APPENDIX D WIRING DIAGRAMS Fig I 48GC 04 06 Power Wiring Diagram 208 230 3 60...
Page 101: ...101 APPENDIX D WIRING DIAGRAMS Fig J 48GC 04 06 Power Wiring Diagram 460 575 3 60...
Page 102: ...102 APPENDIX D WIRING DIAGRAMS Fig K 48GC 04 06 SystemVu Control Wiring Diagram All Voltages...
Page 103: ...103 APPENDIX D WIRING DIAGRAMS Fig L 48GC 04 06 SystemVu Power Wiring Diagram 208 230 1 60...
Page 104: ...104 APPENDIX D WIRING DIAGRAMS Fig M 48GC 04 06 SystemVu Power Wiring Diagram 208 230 3 60...
Page 105: ...105 APPENDIX D WIRING DIAGRAMS Fig N 48GC 04 06 SystemVu Power Wiring Diagram 460 575 3 60...