Carrier Gemini 38AU07 Series Installation Instructions Manual page 15

Units Without Disconnect Option
11
L1
208/230-3-60
Units With Disconnect Option
L1
2
Disconnect
L2 4
L3
6
Disconnect factory test leads; discard.
Fig. 13 — Power Wiring Connections
CONVENIENCE OUTLETS
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
Units with convenience outlet circuits may use multiple dis-
connects. Check convenience outlet for power status before
opening unit for service. Locate its disconnect switch, if
appropriate, and open it. Tag-out this switch, if necessary.
Two types of convenience outlets are offered on 38AU
models: Non-powered and unit-powered. Both types provide
a 125-volt GFCI (ground-fault circuit-interrupter) duplex re-
ceptacle rated at 15-A behind a hinged waterproof access
cover, located on the end panel of the unit. See Fig. 14.
Non-Powered Type
This type requires the field installation of a general-pur-
pose 125-volt 15-A circuit powered from a source elsewhere
in the building. Observe national and local codes when select-
ing wire size, fuse or breaker requirements and disconnect
switch size and location. Route 125-v power supply conduc-
tors into the bottom of the utility box containing the duplex
receptacle. Maximum continuous current for this type of con-
venience outlet (non-unit powered) must not exceed 8 Amps.
Unit-Powered Type
A unit-mounted transformer is factory-installed to step
down the main power supply voltage to the unit to 115-v at
the duplex receptacle. This option also includes a manual
switch with fuse, located in a utility box and mounted on a
bracket behind the convenience outlet; access is through the
unit's control box access panel. See Fig. 14.
The primary leads to the convenience outlet transformer are
not factory-connected. Selection of primary power source is a
customer-option. If local codes permit, the transformer primary
leads can be connected at the line-side terminals on the unit-
C TB1
13
Disconnect
per
NEC
L2 L3
460-3-60
575-3-60
1
Optional
Factory
3
Wiring
Switch
5
mounted non-fused disconnect or HACR breaker switch; this
will provide service power to the unit when the unit disconnect
switch or HACR switch is open. Other connection methods will
result in the convenience outlet circuit being de-energized when
the unit disconnect or HACR switch is open. See Fig. 15.
Convenience
Outlet
GFCI
Pwd-CO
Fuse
Switch
Fig. 14 — Convenience Outlet Location
UNIT CONNECT
VOLTAGE AS
208,
240
230
460 480
575 600
Fig. 15 — Powered Convenience Outlet Wiring
The unit-powered convenience outlet has a 1000 VA rated
transformer. Maximum continuous current must not exceed
8 Amps.
Test the GFCI receptacle by pressing the TEST button on
the face of the receptacle to trip and open the receptacle. Check
for proper grounding wires and power line phasing if the GFCI
receptacle does not trip as required. Press the RESET button to
clear the tripped condition.
Fuse on power type: The factory fuse is a Bussman
"Fusetron" T-15, non-renewable screw-in (Edison base) type
plug fuse.
1. Bussmann and Fusetron are trademarks of Cooper Technologics
Company.
15
Pwd-CO
Transformer
Control Box
Access Panel
PRIMARY TRANSFORMER
CONNECTIONS TERMINALS
L1: RED + YEL H1 + H3
L2: BLU + GRA H2 + H4
L1: RED H1
Splice BLU + YEL H2 + H3
L2: GRA H4
L1: RED H1
L2: GRA H2
1