21
backi ng plate over the screw heads at the keyhole slots
and align with the gasket; tighten the two screws until
snug (do not over-tighten).
Mount the weatherproof cover to the backing plate as
shown in Fig. 27. 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.
RECEPTACLE
NOT INCLUDED
COVER – WHILE-IN-USE
WEATHERPROOF
BASE PLATE FOR
GFCI RECEPTACLE
C09022
Fig. 27 -- Weatherproof Cover Installation
Non--powered type: This type requires the field
installati on of a ge neral--purpose 125--volt 15--A circuit
powered from a source elsewhere in the building. Observe
national and local codes when selecting wire size, fuse or
breake r requirements and disconnect switch size and
loca tion. 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
fact ory--installed to stepdown the main power supply
voltage to the unit to 115--v a t the duplex receptacle. This
option also includes a manual switch with fuse, located in
a utility box and m ounted on a bracket behind the
convenience outlet; access is through the unit’s c ontrol
box access panel. See Fig. 26.
The primary leads to the convenience outlet transformer are
not factory--con nected . Selection of primary power sour ce is
a custo mer--option. If local codes permit, the transfo rmer
primary leads can be connected at the line--side terminals on
the unit--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--energ ized when the unit discon n ect or
HACR switch is open. See Fig. 28.
Using unit--mounted convenience outlets: U n its 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 energ ized until the
convenience outlet pow er is also checked and
de--energization is confir med. Obs erv e National Electrical
Code Article 210, Branch Circuits, for use of convenience
outlets .
Fuse on power type: The factory fuse is a Bussman
“Fusetron” T--15, non--renewable screw--in (Edison base)
type plug fuse.
C08283
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
Fig. 28 -- Powered Convenience Outlet 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 heaters for
overnight use). Observe a 50% limit on circuit loading
above 8 --amps.
Convenience outlet usage rating:
See Fig. 29, below.
a48--- 9320
Fig. 29 -- Convenience Outlet Utilization Notice Label
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 powe r line phasing
if the GFCI receptacle does not trip as required. Press the
RESET button to clear the tripped condition.
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