25
CONVENIENCE OUTLETS
Two types of convenience outlets are offered on 50TC models:
non-powered and unit-powered. Both types provide a 125-v
Ground-Fault Circuit-Interrupter (GFCI) duplex receptacle rated
at 15A behind a hinged waterproof access cover, located on the
end panel of the unit. See Fig. 33.
Fig. 33 —
Convenience Outlet Location
Non-Powered Type
This type requires the field installation of a general-purpose 125-v
15A circuit powered from a source elsewhere in the building. Ob
-
serve national and local codes when selecting wire size, fuse or
breaker requirements and disconnect switch size and location.
Route 125-v power supply conductors into the bottom of the utili
-
ty box containing the duplex receptacle.
Unit-Powered Type
A unit-mounted transformer is factory-installed to stepdown the
main power supply voltage to the unit to 115-v at the duplex re
-
ceptacle. This option also includes a manual switch with fuse, lo
-
cated in a utility box and mounted on a bracket behind the conve
-
nience outlet; access is through the unit’s control box access panel.
See Fig. 34 for wiring.
DUTY CYCLE
The unit-powered convenience outlet has a duty cycle limitation.
The transformer is intended to provide power on an intermittent
basis for service tools, lamps, etc. It is not intended to provide
15 amps loading for continuous duty loads (such as electric heat
-
ers for overnight use). Observe a 50% limit on circuit loading
above 8 amps (i.e., limit loads exceeding 8 amps to 30 minutes of
operation every hour).
The primary leads to the convenience outlet transformer are not
factory-connected. Selection of primary power source is a custom
-
er option. If local codes permit, the transformer primary leads can
be connected at the line-side terminals on a unit-mounted non-
fused disconnect or circuit breaker switch; this will provide
service power to the unit when the unit disconnect switch or cir
-
cuit breaker is open. Other connection methods will result in the
convenience outlet circuit being de-energized when the unit dis
-
connect or circuit breaker is open. See Fig. 34.
Fig. 34 —
Powered Convenience Outlet Wiring
Wet in Use Convenience Outlet Cover
The unit has a “wet in use” convenience outlet cover that must be
installed on the panel containing the convenience outlet. This cov
-
er provides protection against moisture entering the GFCI recepta
-
cle. This cover is placed in the unit control box during shipment.
GFCI Maintenance
Periodically test the GFCI receptacle by pressing the TEST button
on the face of the receptacle.
1. Press the TEST button on the face of the receptacle. This
should cause the internal circuit of the receptacle to trip and
open the receptacle.
2. Check for proper grounding and power line phasing should
the GFCI receptacle fail to trip.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or
death.
Units with convenience outlet circuits may use multiple
disconnects. Check convenience outlet for power status before
opening unit for service. Locate its disconnect switch, if
appropriate, and open it. Lock-out and tag-out this switch, if
necessary.
CONVENIENCE
OUTLET GFCI
PWD-CO FUSE
SWITCH
PWD-CO TRANSFORMER
CONTROL BOX
ACCESS PANEL
UNIT
VOLTAGE
CONNECT
AS
PRIMARY
CONNECTIONS
TRANSFORMER
TERMINALS
208,230
240
L1: RED +YEL
L2: BLU + GRA
H1 + H3
H2 + H4
460
480
L1: RED
Splice BLU + YEL
L2: GRA
H1
H2 + H3
H4
575
600
L1: RED
L2: GRA
H1
H2
Summary of Contents for WeatherMaker 50TC 17-30 Series
Page 34: ...34 Fig 48 RTU Open Overlay for Economizer Wiring ...
Page 35: ...35 Fig 49 VFD Overlay for W2770 Controller Wiring ...
Page 80: ...80 Fig C 50TC 17 28 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 81: ...81 Fig D 50TC 30 Control Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 82: ...82 Fig E 50TC 30 Control Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 83: ...83 Fig F 50TC 17 30 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 84: ...84 Fig G 50TC 17 30 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 89: ...89 Fig L 50TC PremierLink System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 90: ...90 Fig M 50TC RTU Open Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 91: ...91 Fig N 50TC SAV VFD System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 93: ......
