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Convenience
Outlet
GFCI
Pwd-CO
Fuse
Switch
Control Box
Access Panel
Fig. 9 — Convenience Outlet Location
Non-powered type: This type requires the field installation of
a general-purpose 125-volt 15-A circuit powered from a
source elsewhere in the building. Observe national and lo-
cal codes when selecting wire size, fuse or breaker require-
ments and disconnect switch size and location. Route 125-v
power supply conductors into the bottom of the utility 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 receptacle. This option also in-
cludes 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. 9.
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 pri-
mary leads can be connected at the line-side terminals on
the unit-mounted non-fused disconnect switch; this will pro-
vide service power to the unit when the unit disconnect
switch is open. Other connection methods will result in the
convenience outlet circuit being de-energized when the unit
disconnect switch is open. See Fig. 10.
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 heaters for overnight use). Ob-
serve a 50% limit on circuit loading above 8-amps (i.e., limit
loads exceeding 8-amps to 30 minutes of operation every
hour).
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)
™
1
type plug fuse.
1. Third-party trademarks and logos are the property of their respective
owners.
14
Using unit-mounted convenience outlets: Units with unit-
mounted convenience outlet circuits will often require that
two disconnects be opened to de-energize all power to the
unit. Treat all units as electrically energized until the conve-
nience outlet power is also checked and de-energization is
confirmed. Observe National Electrical Code Article 210,
Branch Circuits, for use of convenience outlets.
Pwd-CO
Transformer
VOLTAGE
208, 230
Fig. 10 — Powered Convenience Outlet Wiring
Installing Weatherproof Cover
A weatherproof while-in-use cover for the factory installed
convenience outlets is now required by UL standards. This
cover cannot be factory mounted due its depth; it must be
installed at unit installation. For shipment, the convenience
outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit's control
box. The kit includes the hinged cover, a backing plate and
gasket.
DISCONNECT
CONVENIENCE OUTLET.
Remove the blank cover plate at the convenience outlet;
discard the blank cover.
Loosen the two screws at the GFCI duplex outlet, until ap-
proximately 1/2 in. (13 mm) under screw heads are ex-
posed. Press the gasket over the screw heads. Slip the
backing plate over the screw heads at the keyhole slots and
align with the gasket; tighten the two screws until snug (do
™1
not overtighten).
Mount the weatherproof cover to the backing plate as
shown in Fig. 11. Remove two slot fillers in the bottom of the
cover to permit service tool cords to exit the cover. Check
for full closing and latching.
Specifications subject to change without notice.
UNIT
CONNECT
PRIMARY
AS
CONNECTIONS
L1: RED + YEL
240
L2: BLU + GRA
L1: RED
460
480
Splice BLU + YEL
L2: GRA
L1: RED
575
600
L2: GRA
ALL
POWER
TRANSFORMER
TERMINALS
H1 + H3
H2 + H4
H1
H2 + H3
H4
H1
H2
TO
UNIT
AND
CHS-180-240-01SI Rev. A
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